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fixed jpeg turbo on git

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This commit is contained in:
JosePereira 2012-06-13 21:21:37 +01:00
parent c730fc4d5e
commit 3a33c8840f
368 changed files with 109208 additions and 0 deletions
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30
jni/jpeg-turbo/ANDROID.txt Normal file
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The Android project has extend the libjpeg library. These extensions have been
ported into libjpeg-turbo.
By default none of these extentions are included. In order to enable the
Android extentions the following defines must be included with CFLAGS.
-DANDROID -DANDROID_TILE_BASED_DECODE -DANDROID_RGB -DENABLE_ANDROID_NULL_CONVERT
Android does not utilize the autotools as a mechanism for configuration,
creation of Makefiles and such. Instead Android.mk has been included.
However two generated files are expected, config.h and jconfig.h. Both of these
files are included in the android directory.
To build on android. Place the libjpeg-turbo directory into system/external. Remove the
old jpeg directory. Rename libjpeg-turbo to jpeg. Copy the contents of the android
directory into the main libjpeg-turbo directory.
Build your android as your normally would.
This code (until accepted upstream) is being kept in the 1.2-beta-linaro-andoid branch
in git at:
http://git.linaro.org/gitweb?p=people/tomgall/libjpeg-turbo/libjpeg-turbo.git;a=summary
If you have questions feel free to email tom.gall@linaro.org or join #linaro
on irc.freenode.net and ping tgall_foo/Dr_Who.
Enjoy!

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jni/jpeg-turbo/Android.mk Normal file
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# Makefile for libjpeg-turbo
ifeq ($(TARGET_ARCH_ABI),armeabi-v7a)
##################################################
### simd ###
##################################################
LOCAL_PATH := $(my-dir)
include $(CLEAR_VARS)
# Set ANDROID_JPEG_USE_VENUM to true to enable VeNum optimizations
ANDROID_JPEG_USE_VENUM := true
# Disable VeNum optimizations if they are not supported on the build target
ifneq ($(ARCH_ARM_HAVE_VFP),true)
ANDROID_JPEG_USE_VENUM := false
else
ifneq ($(ARCH_ARM_HAVE_NEON),true)
ANDROID_JPEG_USE_VENUM := false
endif
endif
# From autoconf-generated Makefile
EXTRA_DIST = simd/nasm_lt.sh simd/jcclrmmx.asm simd/jcclrss2.asm simd/jdclrmmx.asm simd/jdclrss2.asm \
simd/jdmrgmmx.asm simd/jdmrgss2.asm simd/jcclrss2-64.asm simd/jdclrss2-64.asm \
simd/jdmrgss2-64.asm simd/CMakeLists.txt
libsimd_SOURCES_DIST = simd/jsimd_arm_neon.S \
asm/armv7//jdcolor-armv7.S asm/armv7/jdidct-armv7.S \
simd/jsimd_arm.c
# or jsimd_none.c
LOCAL_ARM_NEON := true
LOCAL_SRC_FILES := $(libsimd_SOURCES_DIST)
LOCAL_C_INCLUDES := $(LOCAL_PATH)/simd \
$(LOCAL_PATH)/android
LOCAL_CFLAGS := -DANDROID_JPEG_USE_VENUM
AM_CFLAGS := -march=armv7-a -mfpu=neon
AM_CCASFLAGS := -march=armv7-a -mfpu=neon
LOCAL_MODULE_TAGS := debug
LOCAL_MODULE := libsimd
include $(BUILD_STATIC_LIBRARY)
######################################################
### libjpeg.so ##
######################################################
include $(CLEAR_VARS)
# From autoconf-generated Makefile
libjpeg_SOURCES_DIST = jcapimin.c jcapistd.c jccoefct.c jccolor.c \
jcdctmgr.c jchuff.c jcinit.c jcmainct.c jcmarker.c jcmaster.c \
jcomapi.c jcparam.c jcphuff.c jcprepct.c jcsample.c jctrans.c \
jdapimin.c jdapistd.c jdatadst.c jdatasrc.c jdcoefct.c jdcolor.c \
jddctmgr.c jdhuff.c jdinput.c jdmainct.c jdmarker.c jdmaster.c \
jdmerge.c jdphuff.c jdpostct.c jdsample.c jdtrans.c jerror.c \
jfdctflt.c jfdctfst.c jfdctint.c jidctflt.c jidctfst.c jidctint.c \
jidctred.c jquant1.c jquant2.c jutils.c jmemmgr.c jmemnobs.c \
jaricom.c jcarith.c jdarith.c \
turbojpeg.c transupp.c jdatadst-tj.c jdatasrc-tj.c
# turbojpeg-mapfile
#possible adds jmem-android.c jmemnobs.c jmemmgr.c jmem-ashmem.c
LOCAL_SRC_FILES:= $(libjpeg_SOURCES_DIST)
LOCAL_SHARED_LIBRARIES := libcutils
LOCAL_STATIC_LIBRARIES := libsimd
LOCAL_C_INCLUDES := $(LOCAL_PATH) \
$(LOCAL_PATH)/android
LOCAL_CFLAGS := -DAVOID_TABLES -O3 -fstrict-aliasing -DANDROID \
-DANDROID_TILE_BASED_DECODE -DENABLE_ANDROID_NULL_CONVERT -DANDROID_JPEG_USE_VENUM
#-DANDROID_TILE_BASED_DECODE -DUSE_ANDROID_ASHMEM
LOCAL_MODULE_PATH := $(TARGET_OUT_OPTIONAL_STATIC_LIBRARY)
LOCAL_MODULE_TAGS := debug
LOCAL_MODULE := jpeg
include $(BUILD_STATIC_LIBRARY)
######################################################
### cjpeg ###
######################################################
#include $(CLEAR_VARS)
#
## From autoconf-generated Makefile
#cjpeg_SOURCES = cdjpeg.c cjpeg.c rdbmp.c rdgif.c \
# rdppm.c rdswitch.c rdtarga.c
#
#LOCAL_SRC_FILES:= $(cjpeg_SOURCES)
#
#LOCAL_SHARED_LIBRARIES := libjpeg
#
#LOCAL_C_INCLUDES := $(LOCAL_PATH) \
# $(LOCAL_PATH)/android
#
#LOCAL_CFLAGS := -DBMP_SUPPORTED -DGIF_SUPPORTED -DPPM_SUPPORTED -DTARGA_SUPPORTED \
# -DANDROID -DANDROID_TILE_BASED_DECODE -DENABLE_ANDROID_NULL_CONVERT
#
#LOCAL_MODULE_PATH := $(TARGET_OUT_OPTIONAL_EXECUTABLE)
#
#LOCAL_MODULE_TAGS := debug
#
#LOCAL_MODULE := cjpeg
#
#include $(BUILD_EXECUTABLE)
######################################################
### djpeg ###
######################################################
#include $(CLEAR_VARS)
#
## From autoconf-generated Makefile
#djpeg_SOURCES = cdjpeg.c djpeg.c rdcolmap.c rdswitch.c \
# wrbmp.c wrgif.c wrppm.c wrtarga.c
#
#LOCAL_SRC_FILES:= $(djpeg_SOURCES)
#
#LOCAL_SHARED_LIBRARIES := libjpeg
#
#LOCAL_C_INCLUDES := $(LOCAL_PATH) \
# $(LOCAL_PATH)/android
#
#LOCAL_CFLAGS := -DBMP_SUPPORTED -DGIF_SUPPORTED -DPPM_SUPPORTED -DTARGA_SUPPORTED \
# -DANDROID -DANDROID_TILE_BASED_DECODE -DENABLE_ANDROID_NULL_CONVERT
#
#LOCAL_MODULE_PATH := $(TARGET_OUT_OPTIONAL_EXECUTABLE)
#
#LOCAL_MODULE_TAGS := debug
#
#LOCAL_MODULE := djpeg
#
#include $(BUILD_EXECUTABLE)
#
#######################################################
#### jpegtran ###
#######################################################
#
#include $(CLEAR_VARS)
#
## From autoconf-generated Makefile
#jpegtran_SOURCES = jpegtran.c rdswitch.c cdjpeg.c transupp.c
#
#LOCAL_SRC_FILES:= $(jpegtran_SOURCES)
#
#LOCAL_SHARED_LIBRARIES := libjpeg
#
#LOCAL_C_INCLUDES := $(LOCAL_PATH) \
# $(LOCAL_PATH)/android
#
#LOCAL_CFLAGS := -DANDROID -DANDROID_TILE_BASED_DECODE -DENABLE_ANDROID_NULL_CONVERT
#
#LOCAL_MODULE_PATH := $(TARGET_OUT_OPTIONAL_EXECUTABLE)
#
#LOCAL_MODULE_TAGS := debug
#
#LOCAL_MODULE := jpegtran
#
#include $(BUILD_EXECUTABLE)
#
#######################################################
#### tjunittest ###
#######################################################
#
#include $(CLEAR_VARS)
#
## From autoconf-generated Makefile
#tjunittest_SOURCES = tjunittest.c tjutil.c
#
#LOCAL_SRC_FILES:= $(tjunittest_SOURCES)
#
#LOCAL_SHARED_LIBRARIES := libjpeg
#
#LOCAL_C_INCLUDES := $(LOCAL_PATH) \
# $(LOCAL_PATH)/android
#
#LOCAL_CFLAGS := -DANDROID -DANDROID_TILE_BASED_DECODE -DENABLE_ANDROID_NULL_CONVERT
#
#LOCAL_MODULE_PATH := $(TARGET_OUT_OPTIONAL_EXECUTABLE)
#
#LOCAL_MODULE_TAGS := debug
#
#LOCAL_MODULE := tjunittest
#
#include $(BUILD_EXECUTABLE)
#
#######################################################
#### tjbench ###
#######################################################
#
#include $(CLEAR_VARS)
#
## From autoconf-generated Makefile
#tjbench_SOURCES = tjbench.c bmp.c tjutil.c rdbmp.c rdppm.c \
# wrbmp.c wrppm.c
#
#LOCAL_SRC_FILES:= $(tjbench_SOURCES)
#
#LOCAL_SHARED_LIBRARIES := libjpeg
#
#LOCAL_C_INCLUDES := $(LOCAL_PATH) \
# $(LOCAL_PATH)/android
#
#LOCAL_CFLAGS := -DBMP_SUPPORTED -DPPM_SUPPORTED \
# -DANDROID -DANDROID_TILE_BASED_DECODE -DENABLE_ANDROID_NULL_CONVERT
#
#LOCAL_MODULE_PATH := $(TARGET_OUT_OPTIONAL_EXECUTABLE)
#
#LOCAL_MODULE_TAGS := debug
#
#LOCAL_MODULE := tjbench
#
#include $(BUILD_EXECUTABLE)
#
#######################################################
#### rdjpgcom ###
#######################################################
#
#include $(CLEAR_VARS)
#
## From autoconf-generated Makefile
#rdjpgcom_SOURCES = rdjpgcom.c
#
#LOCAL_SRC_FILES:= $(rdjpgcom_SOURCES)
#
#LOCAL_SHARED_LIBRARIES := libjpeg
#
#LOCAL_C_INCLUDES := $(LOCAL_PATH) \
# $(LOCAL_PATH)/android
#
#LOCAL_CFLAGS := -DANDROID -DANDROID_TILE_BASED_DECODE -DENABLE_ANDROID_NULL_CONVERT
#
#LOCAL_MODULE_PATH := $(TARGET_OUT_OPTIONAL_EXECUTABLE)
#
#LOCAL_MODULE_TAGS := debug
#
#LOCAL_MODULE := rdjpgcom
#
#include $(BUILD_EXECUTABLE)
#
#######################################################
#### wrjpgcom ###
#######################################################
#
#include $(CLEAR_VARS)
#
## From autoconf-generated Makefile
#wrjpgcom_SOURCES = wrjpgcom.c
#
#LOCAL_SRC_FILES:= $(wrjpgcom_SOURCES)
#
#LOCAL_SHARED_LIBRARIES := libjpeg
#
#LOCAL_C_INCLUDES := $(LOCAL_PATH) \
# $(LOCAL_PATH)/android
#
#LOCAL_CFLAGS := -DANDROID -DANDROID_TILE_BASED_DECODE -DENABLE_ANDROID_NULL_CONVERT
#
#LOCAL_MODULE_PATH := $(TARGET_OUT_OPTIONAL_EXECUTABLE)
#
#LOCAL_MODULE_TAGS := debug
#
#LOCAL_MODULE := wrjpgcom
#
#include $(BUILD_EXECUTABLE)
endif # TARGET_SIMULATOR != true

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jni/jpeg-turbo/BUILDING.txt Normal file
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*******************************************************************************
** Building on Unix Platforms (including Cygwin)
*******************************************************************************
==================
Build Requirements
==================
-- autoconf 2.56 or later
-- automake 1.7 or later
-- libtool 1.4 or later
-- NASM
* 0.98, or 2.01 or later is required for a 32-bit build
* NASM 2.00 or later is required for a 64-bit build
* NASM 2.07 or later is required for a 64-bit build on OS X. This can be
obtained from MacPorts (http://www.macports.org/).
The binary RPMs released by the NASM project do not work on older Linux
systems, such as Red Hat Enterprise Linux 4. On such systems, you can
easily build and install NASM from a source RPM by downloading one of the
SRPMs from
http://www.nasm.us/pub/nasm/releasebuilds
and executing the following as root:
ARCH=`uname -m`
rpmbuild --rebuild nasm-{version}.src.rpm
rpm -Uvh /usr/src/redhat/RPMS/$ARCH/nasm-{version}.$ARCH.rpm
NOTE: the NASM build will fail if texinfo is not installed.
-- GCC v4.1 or later recommended for best performance
-- If building the TurboJPEG/OSS Java wrapper, JDK or OpenJDK 1.5 or later is
required. Some systems, such as OS X 10.4, Solaris 10 and later, and Red
Hat Enterprise Linux 5 and later, have this pre-installed. On OS X 10.5 and
later, it will be necessary to install the Java Developer Package, which can
be downloaded from http://connect.apple.com. For systems that do not have a
JDK installed, you can obtain the Oracle Java Development Kit from
http://www.java.com.
==================
Out-of-Tree Builds
==================
Binary objects, libraries, and executables are generated in the same directory
from which configure was executed (the "binary directory"), and this directory
need not necessarily be the same as the libjpeg-turbo source directory. You
can create multiple independent binary directories, in which different versions
of libjpeg-turbo can be built from the same source tree using different
compilers or settings. In the sections below, {build_directory} refers to the
binary directory, whereas {source_directory} refers to the libjpeg-turbo source
directory. For in-tree builds, these directories are the same.
======================
Building libjpeg-turbo
======================
The following procedure will build libjpeg-turbo on Linux, FreeBSD, 32-bit
OS X, Cygwin, and Solaris/x86 systems (on Solaris, this generates a 32-bit
library. See below for 64-bit build instructions.)
cd {source_directory}
autoreconf -fiv
cd {build_directory}
sh {source_directory}/configure [additional configure flags]
make
NOTE: Running autoreconf in the source directory is only necessary if building
libjpeg-turbo from the SVN repository.
This will generate the following files under .libs/
libjpeg.a
Static link library for libjpeg-turbo
libjpeg.so.{version} (Linux, Solaris)
libjpeg.{version}.dylib (OS X)
cygjpeg-{version}.dll (Cygwin)
Shared library for libjpeg-turbo
libjpeg.so (Linux, Solaris)
libjpeg.dylib (OS X)
libjpeg.dll.a (Cygwin)
Development stub for libjpeg-turbo shared library
libturbojpeg.a
Static link library for TurboJPEG/OSS
libturbojpeg.so (Linux, Solaris)
libturbojpeg.dylib (OS X)
Shared library and development stub for TurboJPEG/OSS
cygturbojpeg.dll (Cygwin)
Shared library for TurboJPEG/OSS
libturbojpeg.dll.a (Cygwin)
Development stub for TurboJPEG/OSS shared library
{version} is 62.0.0, 7.0.0, or 8.0.2, depending on whether libjpeg v6b
(default), v7, or v8 emulation is enabled. If using Cygwin, {version} is
62, 7, or 8.
libjpeg v7 or v8 Emulation
--------------------------
Add --with-jpeg7 to the configure command line to build a version of
libjpeg-turbo that is compatible with libjpeg v7. Add --with-jpeg8 to the
configure command to build a version of libjpeg-turbo that is compatible with
libjpeg v8. See README-turbo.txt for more information on libjpeg v7 and v8
emulation.
Arithmetic Coding Support
-------------------------
Since the patent on arithmetic coding has expired, this functionality has been
included in this release of libjpeg-turbo. libjpeg-turbo's implementation is
based on the implementation in libjpeg v8, but it works when emulating libjpeg
v7 or v6b as well. The default is to enable both arithmetic encoding and
decoding, but those who have philosophical objections to arithmetic coding can
add --without-arith-enc or --without-arith-dec to the configure command line to
disable encoding or decoding (respectively.)
TurboJPEG/OSS Java Wrapper
--------------------------
Add --with-java to the configure command line to incorporate an optional Java
Native Interface wrapper into the TurboJPEG/OSS dynamic library and build the
Java front-end classes to support it. This allows the TurboJPEG/OSS dynamic
library to be used directly from Java applications. See java/README for more
details.
You can set the JAVAC, JAR, and JAVA configure variables to specify
alternate commands for javac, jar, and java (respectively.) You can also
set the JAVACFLAGS configure variable to specify arguments that should be
passed to the Java compiler when building the front-end classes, and JNI_CFLAGS
to specify arguments that should be passed to the C compiler when building the
JNI wrapper. Run 'configure --help' for more details.
========================
Installing libjpeg-turbo
========================
If you intend to install these libraries and the associated header files, then
replace 'make' in the instructions above with
make install prefix={base dir} libdir={library directory}
For example,
make install prefix=/usr/local libdir=/usr/local/lib64
will install the header files in /usr/local/include and the library files in
/usr/local/lib64. If 'prefix' and 'libdir' are not specified, then the default
is to install the header files in /opt/libjpeg-turbo/include and the library
files in /opt/libjpeg-turbo/lib.
NOTE: You can specify a prefix of /usr and a libdir of, for instance,
/usr/lib64 to overwrite the system's version of libjpeg. If you do this,
however, then be sure to BACK UP YOUR SYSTEM'S INSTALLATION OF LIBJPEG before
overwriting it. It is recommended that you instead install libjpeg-turbo into
a non-system directory and manipulate the LD_LIBRARY_PATH or create sym links
to force applications to use libjpeg-turbo instead of libjpeg. See
README-turbo.txt for more information.
=============
Build Recipes
=============
32-bit Library Build on 64-bit Linux
------------------------------------
Add
--host i686-pc-linux-gnu CFLAGS='-O3 -m32' LDFLAGS=-m32
to the configure command line.
64-bit Library Build on 64-bit OS X
-----------------------------------
Add
--host x86_64-apple-darwin NASM=/opt/local/bin/nasm
to the configure command line. NASM 2.07 or later from MacPorts must be
installed.
32-bit Library Build on 64-bit OS X
-----------------------------------
Add
CFLAGS='-O3 -m32' LDFLAGS=-m32
to the configure command line.
64-bit Backward-Compatible Library Build on 64-bit OS X
-------------------------------------------------------
Add
--host x86_64-apple-darwin NASM=/opt/local/bin/nasm \
CFLAGS='-isysroot /Developer/SDKs/MacOSX10.4u.sdk \
-mmacosx-version-min=10.4 -O3' \
LDFLAGS='-isysroot /Developer/SDKs/MacOSX10.4u.sdk \
-mmacosx-version-min=10.4'
to the configure command line. The OS X 10.4 SDK, and NASM 2.07 or later from
MacPorts, must be installed.
32-bit Backward-Compatible Library Build on OS X
------------------------------------------------
Add
CFLAGS='-isysroot /Developer/SDKs/MacOSX10.4u.sdk \
-mmacosx-version-min=10.4 -O3 -m32' \
LDFLAGS='-isysroot /Developer/SDKs/MacOSX10.4u.sdk \
-mmacosx-version-min=10.4 -m32'
to the configure command line. The OS X 10.4 SDK must be installed.
64-bit Library Build on 64-bit Solaris
--------------------------------------
Add
--host x86_64-pc-solaris CFLAGS='-O3 -m64' LDFLAGS=-m64
to the configure command line.
32-bit Library Build on 64-bit FreeBSD
--------------------------------------
Add
--host i386-unknown-freebsd CC='gcc -B /usr/lib32' CFLAGS='-O3 -m32' \
LDFLAGS='-B/usr/lib32'
to the configure command line. NASM 2.07 or later from FreeBSD ports must be
installed.
Sun Studio
----------
Add
CC=cc
to the configure command line. libjpeg-turbo will automatically be built with
the maximum optimization level (-xO5) unless you override CFLAGS.
To build a 64-bit version of libjpeg-turbo using Sun Studio, add
--host x86_64-pc-solaris CC=cc CFLAGS='-xO5 -m64' LDFLAGS=-m64
to the configure command line.
MinGW Build on Cygwin
---------------------
Use CMake (see recipes below)
*******************************************************************************
** Building on Windows (Visual C++ or MinGW)
*******************************************************************************
==================
Build Requirements
==================
-- CMake (http://www.cmake.org) v2.6 or later
-- Microsoft Visual C++ 2005 or later
If you don't already have Visual C++, then the easiest way to get it is by
installing the Windows SDK:
http://msdn.microsoft.com/en-us/windows/bb980924.aspx
The Windows SDK includes both 32-bit and 64-bit Visual C++ compilers and
everything necessary to build libjpeg-turbo.
* For 32-bit builds, you can also use Microsoft Visual C++ Express
Edition. Visual C++ Express Edition is a free download.
* 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
GCC v4.1 or later recommended for best performance
-- NASM (http://www.nasm.us/) 0.98 or later (NASM 2.05 or later is required for
a 64-bit build)
-- If building the TurboJPEG/OSS Java wrapper, JDK 1.5 or later is required.
This can be downloaded from http://www.java.com.
==================
Out-of-Tree Builds
==================
Binary objects, libraries, and executables are generated in the same directory
from which cmake was executed (the "binary directory"), and this directory need
not necessarily be the same as the libjpeg-turbo source directory. You can
create multiple independent binary directories, in which different versions of
libjpeg-turbo can be built from the same source tree using different compilers
or settings. In the sections below, {build_directory} refers to the binary
directory, whereas {source_directory} refers to the libjpeg-turbo source
directory. For in-tree builds, these directories are the same.
======================
Building libjpeg-turbo
======================
Visual C++ (Command Line)
-------------------------
cd {build_directory}
cmake -G "NMake Makefiles" -DCMAKE_BUILD_TYPE=Release {source_directory}
nmake
This will build either a 32-bit or a 64-bit version of libjpeg-turbo, depending
on which version of cl.exe is in the PATH.
The following files will be generated under {build_directory}:
jpeg-static.lib
Static link library for libjpeg-turbo
sharedlib/jpeg{version}.dll
DLL for libjpeg-turbo
sharedlib/jpeg.lib
Import library for libjpeg-turbo DLL
turbojpeg-static.lib
Static link library for TurboJPEG/OSS
turbojpeg.dll
DLL for TurboJPEG/OSS
turbojpeg.lib
Import library for TurboJPEG/OSS DLL
{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 9 2008" {source_directory}
You can then open ALL_BUILD.vcproj in Visual Studio and build one of the
configurations in that project ("Debug", "Release", etc.) to generate a full
build of libjpeg-turbo.
This will generate the following files under {build_directory}:
{configuration}/jpeg-static.lib
Static link library for libjpeg-turbo
sharedlib/{configuration}/jpeg{version}.dll
DLL for libjpeg-turbo
sharedlib/{configuration}/jpeg.lib
Import library for libjpeg-turbo DLL
{configuration}/turbojpeg-static.lib
Static link library for TurboJPEG/OSS
{configuration}/turbojpeg.dll
DLL for TurboJPEG/OSS
{configuration}/turbojpeg.lib
Import library for TurboJPEG/OSS DLL
{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
-----
cd {build_directory}
cmake -G "MSYS Makefiles" {source_directory}
make
This will generate the following files under {build_directory}
libjpeg.a
Static link library for libjpeg-turbo
sharedlib/libjpeg-{version}.dll
DLL for libjpeg-turbo
sharedlib/libjpeg.dll.a
Import library for libjpeg-turbo DLL
libturbojpeg.a
Static link library for TurboJPEG/OSS
libturbojpeg.dll
DLL for TurboJPEG/OSS
libturbojpeg.dll.a
Import library for TurboJPEG/OSS DLL
{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 Emulation
--------------------------
Add "-DWITH_JPEG7=1" to the cmake command line to build a version of
libjpeg-turbo that is compatible with libjpeg v7. Add "-DWITH_JPEG8=1" to the
cmake command to build a version of libjpeg-turbo that is compatible with
libjpeg v8. See README-turbo.txt for more information on libjpeg v7 and v8
emulation.
Arithmetic Coding Support
-------------------------
Since the patent on arithmetic coding has expired, this functionality has been
included in this release of libjpeg-turbo. libjpeg-turbo's implementation is
based on the implementation in libjpeg v8, but it works when emulating libjpeg
v7 or v6b as well. The default is to enable both arithmetic encoding and
decoding, but those who have philosophical objections to arithmetic coding can
add "-DWITH_ARITH_ENC=0" or "-DWITH_ARITH_DEC=0" to the cmake command line to
disable encoding or decoding (respectively.)
TurboJPEG/OSS Java Wrapper
--------------------------
Add "-DWITH_JAVA=1" to the cmake command line to incorporate an optional Java
Native Interface wrapper into the TurboJPEG/OSS dynamic library and build the
Java front-end classes to support it. This allows the TurboJPEG/OSS dynamic
library to be used directly from Java applications. See java/README for more
details.
If you are using CMake 2.8, you can set the Java_JAVAC_EXECUTABLE,
Java_JAVA_EXECUTABLE, and Java_JAR_EXECUTABLE CMake variables to specify
alternate commands or locations for javac, jar, and java (respectively.) If
you are using CMake 2.6, set JAVA_COMPILE, JAVA_RUNTIME, and JAVA_ARCHIVE
instead. You can also set the JAVACFLAGS CMake variable to specify arguments
that should be passed to the Java compiler when building the front-end classes.
========================
Installing libjpeg-turbo
========================
You can use the build system to install libjpeg-turbo into a directory of your
choosing (as opposed to creating an installer.) To do this, add:
-DCMAKE_INSTALL_PREFIX={install_directory}
to the cmake command line.
For example,
cmake -G "NMake Makefiles" -DCMAKE_BUILD_TYPE=Release \
-DCMAKE_INSTALL_PREFIX=c:\libjpeg-turbo {source_directory}
nmake install
will install the header files in c:\libjpeg-turbo\include, the library files
in c:\libjpeg-turbo\lib, the DLL's in c:\libjpeg-turbo\bin, and the
documentation in c:\libjpeg-turbo\doc.
=============
Build Recipes
=============
64-bit MinGW Build on Cygwin
----------------------------
cd {build_directory}
CC=/usr/bin/x86_64-w64-mingw32-gcc \
cmake -G "Unix Makefiles" -DCMAKE_SYSTEM_NAME=Windows \
-DCMAKE_AR=/usr/bin/x86_64-w64-mingw32-ar \
-DCMAKE_RANLIB=/usr/bin/x86_64-w64-mingw32-ranlib {source_directory}
make
This produces a 64-bit build of libjpeg-turbo that does not depend on
cygwin1.dll or other Cygwin DLL's. The mingw64-x86_64-gcc-core and
mingw64-x86_64-gcc-g++ packages (and their dependencies) must be installed.
32-bit MinGW Build on Cygwin
----------------------------
cd {build_directory}
CC=/usr/bin/i686-w64-mingw32-gcc \
cmake -G "Unix Makefiles" -DCMAKE_SYSTEM_NAME=Windows \
-DDCMAKE_AR=/usr/bin/i686-w64-mingw32-ar \
-DCMAKE_RANLIB=/usr/bin/i686-w64-mingw32-ranlib {source_directory}
make
This produces a 32-bit build of libjpeg-turbo that does not depend on
cygwin1.dll or other Cygwin DLL's. The mingw64-i686-gcc-core and
mingw64-i686-gcc-g++ packages (and their dependencies) must be installed.
MinGW-w64 Build on Windows
--------------------------
This produces a 64-bit build of libjpeg-turbo using the "native" MinGW-w64
toolchain (which is faster than the Cygwin version):
cd {build_directory}
CC={mingw-w64_binary_path}/x86_64-w64-mingw32-gcc \
cmake -G "MSYS Makefiles" \
-DCMAKE_AR={mingw-w64_binary_path}/x86_64-w64-mingw32-ar \
-DCMAKE_RANLIB={mingw-w64_binary_path}/x86_64-w64-mingw32-ranlib \
{source_directory}
make
MinGW Build on Linux
--------------------
cd {build_directory}
CC={mingw_binary_path}/i386-mingw32-gcc \
cmake -G "Unix Makefiles" -DCMAKE_SYSTEM_NAME=Windows \
-DCMAKE_AR={mingw_binary_path}/i386-mingw32-ar \
-DCMAKE_RANLIB={mingw_binary_path}/i386-mingw32-ranlib \
{source_directory}
make
*******************************************************************************
** Creating Release Packages
*******************************************************************************
The following commands can be used to create various types of release packages:
Unix
----
make rpm
Create Red Hat-style binary RPM package. Requires RPM v4 or later.
make srpm
This runs 'make dist' to create a pristine source tarball, then creates a
Red Hat-style source RPM package from the tarball. Requires RPM v4 or later.
make deb
Create Debian-style binary package. Requires dpkg.
make dmg
Create Macintosh package/disk image. This requires the PackageMaker
application, which must be installed in /Developer/Applications/Utilities.
make udmg [BUILDDIR32={32-bit build directory}]
On 64-bit OS X systems, this creates a version of the Macintosh package and
disk image which contains universal i386/x86-64 binaries. You should first
configure a 32-bit out-of-tree build of libjpeg-turbo, then configure a
64-bit out-of-tree build, then run 'make udmg' from the 64-bit build
directory. The build system will look for the 32-bit build under
{source_directory}/osxx86 by default, but you can override this by setting
the BUILDDIR32 variable on the make command line as shown above.
make sunpkg
Build a Solaris package. This requires pkgmk, pkgtrans, and bzip2.
make csunpkg [BUILDDIR32={32-bit build directory}]
On 64-bit Solaris systems, this creates a combined package which contains
both 32-bit and 64-bit libraries. You should first configure a 32-bit
out-of-tree build of libjpeg-turbo, then configure a 64-bit out-of-tree
build, then run 'make csunpkg' from the 64-bit build directory. The build
system will look for the 32-bit build under {source_directory}/solx86 by
default, but you can override this by setting the BUILDDIR32 variable on the
make command line as shown above.
make cygwinpkg
Build a Cygwin binary package.
Windows
-------
If using NMake:
cd {build_directory}
nmake installer
If using MinGW:
cd {build_directory}
make installer
If using the Visual Studio IDE, build the "installer" project.
The installer package (libjpeg-turbo[-gcc][64].exe) will be located under
{build_directory}. If building using the Visual Studio IDE, then the installer
package will be located in a subdirectory with the same name as the
configuration you built (such as {build_directory}\Debug\ or
{build_directory}\Release\).
Building a Windows installer requires the Nullsoft Install System
(http://nsis.sourceforge.net/.) makensis.exe should be in your PATH.

429
jni/jpeg-turbo/CMakeLists.txt Normal file
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@ -0,0 +1,429 @@
#
# Setup
#
cmake_minimum_required(VERSION 2.6)
project(libjpeg-turbo C)
set(VERSION 1.1.90)
if(MINGW OR CYGWIN)
execute_process(COMMAND "date" "+%Y%m%d" OUTPUT_VARIABLE BUILD)
string(REGEX REPLACE "\n" "" BUILD ${BUILD})
elseif(WIN32)
execute_process(COMMAND "${CMAKE_SOURCE_DIR}/cmakescripts/getdate.bat"
OUTPUT_VARIABLE BUILD)
string(REGEX REPLACE "\n" "" BUILD ${BUILD})
else()
message(FATAL_ERROR "Platform not supported by this build system. Use autotools instead.")
endif()
# This does nothing except when using MinGW. CMAKE_BUILD_TYPE has no meaning
# in Visual Studio, and it always defaults to Debug when using NMake.
if(NOT CMAKE_BUILD_TYPE)
set(CMAKE_BUILD_TYPE Release)
endif()
message(STATUS "CMAKE_BUILD_TYPE = ${CMAKE_BUILD_TYPE}")
# This only works if building from the command line. There is currently no way
# to set a variable's value based on the build type when using Visual Studio.
if(CMAKE_BUILD_TYPE STREQUAL "Debug")
set(BUILD "${BUILD}d")
endif()
message(STATUS "VERSION = ${VERSION}, BUILD = ${BUILD}")
option(WITH_SIMD "Include SIMD extensions" TRUE)
option(WITH_ARITH_ENC "Include arithmetic encoding support" TRUE)
option(WITH_ARITH_DEC "Include arithmetic decoding support" TRUE)
option(WITH_JPEG7 "Emulate libjpeg v7 API/ABI (this makes libjpeg-turbo backward incompatible with libjpeg v6b)" FALSE)
option(WITH_JPEG8 "Emulate libjpeg v8 API/ABI (this makes libjpeg-turbo backward incompatible with libjpeg v6b)" FALSE)
option(WITH_JAVA "Build Java wrapper for the TurboJPEG/OSS library" FALSE)
if(WITH_ARITH_ENC)
set(C_ARITH_CODING_SUPPORTED 1)
message(STATUS "Arithmetic encoding support enabled")
else()
message(STATUS "Arithmetic encoding support disabled")
endif()
if(WITH_ARITH_DEC)
set(D_ARITH_CODING_SUPPORTED 1)
message(STATUS "Arithmetic decoding support enabled")
else()
message(STATUS "Arithmetic decoding support disabled")
endif()
if(WITH_JAVA)
message(STATUS "TurboJPEG/OSS Java wrapper enabled")
else()
message(STATUS "TurboJPEG/OSS Java wrapper disabled")
endif()
set(JPEG_LIB_VERSION 62)
set(DLL_VERSION ${JPEG_LIB_VERSION})
set(FULLVERSION ${DLL_VERSION}.0.0)
if(WITH_JPEG8)
set(JPEG_LIB_VERSION 80)
set(DLL_VERSION 8)
set(FULLVERSION ${DLL_VERSION}.0.2)
message(STATUS "Emulating libjpeg v8 API/ABI")
elseif(WITH_JPEG7)
set(JPEG_LIB_VERSION 70)
set(DLL_VERSION 7)
set(FULLVERSION ${DLL_VERSION}.0.0)
message(STATUS "Emulating libjpeg v7 API/ABI")
endif(WITH_JPEG8)
if(MSVC)
# Use the static C library for all build types
foreach(var CMAKE_C_FLAGS CMAKE_C_FLAGS_DEBUG CMAKE_C_FLAGS_RELEASE
CMAKE_C_FLAGS_MINSIZEREL CMAKE_C_FLAGS_RELWITHDEBINFO)
if(${var} MATCHES "/MD")
string(REGEX REPLACE "/MD" "/MT" ${var} "${${var}}")
endif()
endforeach()
add_definitions(-W3 -wd4996)
endif()
# Detect whether compiler is 64-bit
if(MSVC AND CMAKE_CL_64)
set(SIMD_X86_64 1)
set(64BIT 1)
elseif(CMAKE_SIZEOF_VOID_P MATCHES 8)
set(SIMD_X86_64 1)
set(64BIT 1)
endif()
if(64BIT)
message(STATUS "64-bit build")
else()
message(STATUS "32-bit build")
endif()
configure_file(win/jconfig.h.in jconfig.h)
configure_file(win/config.h.in config.h)
include_directories(${CMAKE_CURRENT_BINARY_DIR} ${CMAKE_SOURCE_DIR})
if(WITH_JAVA)
find_package(Java)
find_package(JNI)
if(DEFINED JAVACFLAGS)
message(STATUS "Java compiler flags = ${JAVACFLAGS}")
endif()
endif()
#
# Targets
#
set(JPEG_SOURCES jcapimin.c jcapistd.c jccoefct.c jccolor.c jcdctmgr.c jchuff.c
jcinit.c jcmainct.c jcmarker.c jcmaster.c jcomapi.c jcparam.c jcphuff.c
jcprepct.c jcsample.c jctrans.c jdapimin.c jdapistd.c jdatadst.c jdatasrc.c
jdcoefct.c jdcolor.c jddctmgr.c jdhuff.c jdinput.c jdmainct.c jdmarker.c
jdmaster.c jdmerge.c jdphuff.c jdpostct.c jdsample.c jdtrans.c jerror.c
jfdctflt.c jfdctfst.c jfdctint.c jidctflt.c jidctfst.c jidctint.c jidctred.c
jquant1.c jquant2.c jutils.c jmemmgr.c jmemnobs.c)
if(WITH_ARITH_ENC OR WITH_ARITH_DEC)
set(JPEG_SOURCES ${JPEG_SOURCES} jaricom.c)
endif()
if(WITH_ARITH_ENC)
set(JPEG_SOURCES ${JPEG_SOURCES} jcarith.c)
endif()
if(WITH_ARITH_DEC)
set(JPEG_SOURCES ${JPEG_SOURCES} jdarith.c)
endif()
if(WITH_SIMD)
add_definitions(-DWITH_SIMD)
add_subdirectory(simd)
if(SIMD_X86_64)
set(JPEG_SOURCES ${JPEG_SOURCES} simd/jsimd_x86_64.c)
else()
set(JPEG_SOURCES ${JPEG_SOURCES} simd/jsimd_i386.c)
endif()
# This tells CMake that the "source" files haven't been generated yet
set_source_files_properties(${SIMD_OBJS} PROPERTIES GENERATED 1)
else()
set(JPEG_SOURCES ${JPEG_SOURCES} jsimd_none.c)
message(STATUS "Not using SIMD acceleration")
endif()
if(WITH_JAVA)
add_subdirectory(java)
endif()
add_subdirectory(sharedlib)
add_library(jpeg-static STATIC ${JPEG_SOURCES} ${SIMD_OBJS})
if(NOT MSVC)
set_target_properties(jpeg-static PROPERTIES OUTPUT_NAME jpeg)
endif()
if(WITH_SIMD)
add_dependencies(jpeg-static simd)
endif()
set(TURBOJPEG_SOURCES turbojpeg.c transupp.c jdatadst-tj.c jdatasrc-tj.c)
if(WITH_JAVA)
set(TURBOJPEG_SOURCES ${TURBOJPEG_SOURCES} turbojpeg-jni.c)
include_directories(${JAVA_INCLUDE_PATH} ${JAVA_INCLUDE_PATH2})
endif()
add_library(turbojpeg SHARED ${TURBOJPEG_SOURCES})
set_target_properties(turbojpeg PROPERTIES DEFINE_SYMBOL DLLDEFINE)
if(MINGW)
set_target_properties(turbojpeg PROPERTIES LINK_FLAGS -Wl,--kill-at)
endif()
target_link_libraries(turbojpeg jpeg-static)
set_target_properties(turbojpeg PROPERTIES LINK_INTERFACE_LIBRARIES "")
add_library(turbojpeg-static STATIC ${JPEG_SOURCES} ${SIMD_OBJS}
turbojpeg.c transupp.c jdatadst-tj.c jdatasrc-tj.c)
if(NOT MSVC)
set_target_properties(turbojpeg-static PROPERTIES OUTPUT_NAME turbojpeg)
endif()
if(WITH_SIMD)
add_dependencies(turbojpeg-static simd)
endif()
add_executable(tjunittest tjunittest.c tjutil.c)
target_link_libraries(tjunittest turbojpeg)
add_executable(tjunittest-static tjunittest.c tjutil.c)
target_link_libraries(tjunittest-static turbojpeg-static)
add_executable(tjbench tjbench.c bmp.c tjutil.c rdbmp.c rdppm.c wrbmp.c
wrppm.c)
target_link_libraries(tjbench turbojpeg jpeg)
set_property(TARGET tjbench PROPERTY COMPILE_FLAGS
"-DBMP_SUPPORTED -DPPM_SUPPORTED")
add_executable(tjbench-static tjbench.c bmp.c tjutil.c rdbmp.c rdppm.c wrbmp.c
wrppm.c)
target_link_libraries(tjbench-static turbojpeg-static jpeg-static)
set_property(TARGET tjbench-static PROPERTY COMPILE_FLAGS
"-DBMP_SUPPORTED -DPPM_SUPPORTED")
add_executable(cjpeg-static cjpeg.c cdjpeg.c rdbmp.c rdgif.c rdppm.c rdswitch.c
rdtarga.c)
set_property(TARGET cjpeg-static PROPERTY COMPILE_FLAGS
"-DBMP_SUPPORTED -DGIF_SUPPORTED -DPPM_SUPPORTED -DTARGA_SUPPORTED -DUSE_SETMODE")
target_link_libraries(cjpeg-static jpeg-static)
add_executable(djpeg-static djpeg.c cdjpeg.c rdcolmap.c rdswitch.c wrbmp.c wrgif.c
wrppm.c wrtarga.c)
set_property(TARGET djpeg-static PROPERTY COMPILE_FLAGS
"-DBMP_SUPPORTED -DGIF_SUPPORTED -DPPM_SUPPORTED -DTARGA_SUPPORTED -DUSE_SETMODE")
target_link_libraries(djpeg-static jpeg-static)
add_executable(jpegtran-static jpegtran.c cdjpeg.c rdswitch.c transupp.c)
target_link_libraries(jpegtran-static jpeg-static)
set_property(TARGET jpegtran-static PROPERTY COMPILE_FLAGS "-DUSE_SETMODE")
add_executable(rdjpgcom rdjpgcom.c)
add_executable(wrjpgcom rdjpgcom.c)
#
# Tests
#
if(MSVC_IDE)
set(OBJDIR "\${CTEST_CONFIGURATION_TYPE}/")
else()
set(OBJDIR "")
endif()
enable_testing()
if(WITH_JAVA)
add_test(TJUnitTest ${JAVA_RUNTIME} -cp java/${OBJDIR}turbojpeg.jar -Djava.library.path=${CMAKE_CURRENT_BINARY_DIR}/${OBJDIR} TJUnitTest)
add_test(TJUnitTest-yuv ${JAVA_RUNTIME} -cp java/${OBJDIR}turbojpeg.jar -Djava.library.path=${CMAKE_CURRENT_BINARY_DIR}/${OBJDIR} TJUnitTest -yuv)
add_test(TJUnitTest-bi ${JAVA_RUNTIME} -cp java/${OBJDIR}turbojpeg.jar -Djava.library.path=${CMAKE_CURRENT_BINARY_DIR}/${OBJDIR} TJUnitTest -bi)
add_test(TJUnitTest-bi-yuv ${JAVA_RUNTIME} -cp java/${OBJDIR}turbojpeg.jar -Djava.library.path=${CMAKE_CURRENT_BINARY_DIR}/${OBJDIR} TJUnitTest -bi -yuv)
endif()
add_test(tjunittest tjunittest)
add_test(tjunittest-alloc tjunittest -alloc)
add_test(tjunittest-yuv tjunittest -yuv)
add_test(cjpeg-int sharedlib/cjpeg -dct int -outfile testoutint.jpg ${CMAKE_SOURCE_DIR}/testorig.ppm)
add_test(cjpeg-int-cmp ${CMAKE_COMMAND} -E compare_files ${CMAKE_SOURCE_DIR}/testimgint.jpg testoutint.jpg)
add_test(cjpeg-fast sharedlib/cjpeg -dct fast -opt -outfile testoutfst.jpg ${CMAKE_SOURCE_DIR}/testorig.ppm)
add_test(cjpeg-fast-cmp ${CMAKE_COMMAND} -E compare_files ${CMAKE_SOURCE_DIR}/testimgfst.jpg testoutfst.jpg)
add_test(cjpeg-fast-100 sharedlib/cjpeg -dct fast -quality 100 -opt -outfile testoutfst100.jpg ${CMAKE_SOURCE_DIR}/testorig.ppm)
add_test(cjpeg-fast-100-cmp ${CMAKE_COMMAND} -E compare_files ${CMAKE_SOURCE_DIR}/testimgfst100.jpg testoutfst100.jpg)
add_test(cjpeg-float sharedlib/cjpeg -dct float -outfile testoutflt.jpg ${CMAKE_SOURCE_DIR}/testorig.ppm)
if(WITH_SIMD)
add_test(cjpeg-float-cmp ${CMAKE_COMMAND} -E compare_files ${CMAKE_SOURCE_DIR}/testimgflt.jpg testoutflt.jpg)
else()
add_test(cjpeg-float-cmp ${CMAKE_COMMAND} -E compare_files ${CMAKE_SOURCE_DIR}/testimgflt-nosimd.jpg testoutflt.jpg)
endif()
add_test(cjpeg-int-gray sharedlib/cjpeg -dct int -grayscale -outfile testoutgray.jpg ${CMAKE_SOURCE_DIR}/testorig.ppm)
add_test(cjpeg-int-gray-cmp ${CMAKE_COMMAND} -E compare_files ${CMAKE_SOURCE_DIR}/testimggray.jpg testoutgray.jpg)
add_test(djpeg-int sharedlib/djpeg -dct int -fast -ppm -outfile testoutint.ppm ${CMAKE_SOURCE_DIR}/testorig.jpg)
add_test(djpeg-int-cmp ${CMAKE_COMMAND} -E compare_files ${CMAKE_SOURCE_DIR}/testimgint.ppm testoutint.ppm)
add_test(djpeg-fast sharedlib/djpeg -dct fast -ppm -outfile testoutfst.ppm ${CMAKE_SOURCE_DIR}/testorig.jpg)
add_test(djpeg-fast-cmp ${CMAKE_COMMAND} -E compare_files ${CMAKE_SOURCE_DIR}/testimgfst.ppm testoutfst.ppm)
add_test(djpeg-float sharedlib/djpeg -dct float -ppm -outfile testoutflt.ppm ${CMAKE_SOURCE_DIR}/testorig.jpg)
if(WITH_SIMD)
add_test(djpeg-float-cmp ${CMAKE_COMMAND} -E compare_files ${CMAKE_SOURCE_DIR}/testimgflt.ppm testoutflt.ppm)
else()
add_test(djpeg-float-cmp ${CMAKE_COMMAND} -E compare_files ${CMAKE_SOURCE_DIR}/testorig.ppm testoutflt.ppm)
endif()
add_test(djpeg-int-1_2 sharedlib/djpeg -dct int -scale 1/2 -ppm -outfile testoutint1_2.ppm ${CMAKE_SOURCE_DIR}/testorig.jpg)
add_test(djpeg-int-1_2-cmp ${CMAKE_COMMAND} -E compare_files ${CMAKE_SOURCE_DIR}/testimgint1_2.ppm testoutint1_2.ppm)
add_test(djpeg-fast-1_2 sharedlib/djpeg -dct fast -scale 1/2 -ppm -outfile testoutfst1_2.ppm ${CMAKE_SOURCE_DIR}/testorig.jpg)
add_test(djpeg-fast-1_2-cmp ${CMAKE_COMMAND} -E compare_files ${CMAKE_SOURCE_DIR}/testimgfst1_2.ppm testoutfst1_2.ppm)
add_test(djpeg-int-1_4 sharedlib/djpeg -dct int -scale 1/4 -ppm -outfile testoutint1_4.ppm ${CMAKE_SOURCE_DIR}/testorig.jpg)
add_test(djpeg-int-1_4-cmp ${CMAKE_COMMAND} -E compare_files ${CMAKE_SOURCE_DIR}/testimgint1_4.ppm testoutint1_4.ppm)
add_test(djpeg-fast-1_4 sharedlib/djpeg -dct fast -scale 1/4 -ppm -outfile testoutfst1_4.ppm ${CMAKE_SOURCE_DIR}/testorig.jpg)
add_test(djpeg-fast-1_4-cmp ${CMAKE_COMMAND} -E compare_files ${CMAKE_SOURCE_DIR}/testimgfst1_4.ppm testoutfst1_4.ppm)
add_test(djpeg-int-1_8 sharedlib/djpeg -dct int -scale 1/8 -ppm -outfile testoutint1_8.ppm ${CMAKE_SOURCE_DIR}/testorig.jpg)
add_test(djpeg-int-1_8-cmp ${CMAKE_COMMAND} -E compare_files ${CMAKE_SOURCE_DIR}/testimgint1_8.ppm testoutint1_8.ppm)
add_test(djpeg-fast-1_8 sharedlib/djpeg -dct fast -scale 1/8 -ppm -outfile testoutfst1_8.ppm ${CMAKE_SOURCE_DIR}/testorig.jpg)
add_test(djpeg-fast-1_8-cmp ${CMAKE_COMMAND} -E compare_files ${CMAKE_SOURCE_DIR}/testimgfst1_8.ppm testoutfst1_8.ppm)
add_test(djpeg-256 sharedlib/djpeg -dct int -bmp -colors 256 -outfile testout.bmp ${CMAKE_SOURCE_DIR}/testorig.jpg)
add_test(djpeg-256-cmp ${CMAKE_COMMAND} -E compare_files ${CMAKE_SOURCE_DIR}/testimg.bmp testout.bmp)
add_test(cjpeg-prog sharedlib/cjpeg -dct int -progressive -outfile testoutp.jpg ${CMAKE_SOURCE_DIR}/testorig.ppm)
add_test(cjpeg-prog-cmp ${CMAKE_COMMAND} -E compare_files ${CMAKE_SOURCE_DIR}/testimgp.jpg testoutp.jpg)
add_test(jpegtran-prog sharedlib/jpegtran -outfile testoutt.jpg testoutp.jpg)
add_test(jpegtran-prog-cmp ${CMAKE_COMMAND} -E compare_files ${CMAKE_SOURCE_DIR}/testimgint.jpg testoutt.jpg)
if(WITH_ARITH_ENC)
add_test(cjpeg-ari sharedlib/cjpeg -dct int -arithmetic -outfile testoutari.jpg ${CMAKE_SOURCE_DIR}/testorig.ppm)
add_test(cjpeg-ari-cmp ${CMAKE_COMMAND} -E compare_files ${CMAKE_SOURCE_DIR}/testimgari.jpg testoutari.jpg)
add_test(jpegtran-toari sharedlib/jpegtran -arithmetic -outfile testouta.jpg ${CMAKE_SOURCE_DIR}/testimgint.jpg)
add_test(jpegtran-toari-cmp ${CMAKE_COMMAND} -E compare_files ${CMAKE_SOURCE_DIR}/testimgari.jpg testouta.jpg)
endif()
if(WITH_ARITH_DEC)
add_test(djpeg-ari sharedlib/djpeg -dct int -fast -ppm -outfile testoutari.ppm ${CMAKE_SOURCE_DIR}/testimgari.jpg)
add_test(djpeg-ari-cmp ${CMAKE_COMMAND} -E compare_files ${CMAKE_SOURCE_DIR}/testimgari.ppm testoutari.ppm)
add_test(jpegtran-fromari sharedlib/jpegtran -outfile testouta.jpg ${CMAKE_SOURCE_DIR}/testimgari.jpg)
add_test(jpegtran-fromari-cmp ${CMAKE_COMMAND} -E compare_files ${CMAKE_SOURCE_DIR}/testimgint.jpg testouta.jpg)
endif()
add_test(jpegtran-crop sharedlib/jpegtran -crop 120x90+20+50 -transpose -perfect -outfile testoutcrop.jpg ${CMAKE_SOURCE_DIR}/testorig.jpg)
add_test(jpegtran-crop-cmp ${CMAKE_COMMAND} -E compare_files ${CMAKE_SOURCE_DIR}/testimgcrop.jpg testoutcrop.jpg)
add_test(tjunittest-static tjunittest-static)
add_test(tjunittest-static-alloc tjunittest-static -alloc)
add_test(tjunittest-static-yuv tjunittest-static -yuv)
add_test(cjpeg-static-int cjpeg-static -dct int -outfile testoutint.jpg ${CMAKE_SOURCE_DIR}/testorig.ppm)
add_test(cjpeg-static-int-cmp ${CMAKE_COMMAND} -E compare_files ${CMAKE_SOURCE_DIR}/testimgint.jpg testoutint.jpg)
add_test(cjpeg-static-fast cjpeg-static -dct fast -opt -outfile testoutfst.jpg ${CMAKE_SOURCE_DIR}/testorig.ppm)
add_test(cjpeg-static-fast-cmp ${CMAKE_COMMAND} -E compare_files ${CMAKE_SOURCE_DIR}/testimgfst.jpg testoutfst.jpg)
add_test(cjpeg-static-fast-100 cjpeg-static -dct fast -quality 100 -opt -outfile testoutfst100.jpg ${CMAKE_SOURCE_DIR}/testorig.ppm)
add_test(cjpeg-static-fast-100-cmp ${CMAKE_COMMAND} -E compare_files ${CMAKE_SOURCE_DIR}/testimgfst100.jpg testoutfst100.jpg)
add_test(cjpeg-static-float cjpeg-static -dct float -outfile testoutflt.jpg ${CMAKE_SOURCE_DIR}/testorig.ppm)
if(WITH_SIMD)
add_test(cjpeg-static-float-cmp ${CMAKE_COMMAND} -E compare_files ${CMAKE_SOURCE_DIR}/testimgflt.jpg testoutflt.jpg)
else()
add_test(cjpeg-static-float-cmp ${CMAKE_COMMAND} -E compare_files ${CMAKE_SOURCE_DIR}/testimgflt-nosimd.jpg testoutflt.jpg)
endif()
add_test(cjpeg-static-int-gray cjpeg-static -dct int -grayscale -outfile testoutgray.jpg ${CMAKE_SOURCE_DIR}/testorig.ppm)
add_test(cjpeg-static-int-gray-cmp ${CMAKE_COMMAND} -E compare_files ${CMAKE_SOURCE_DIR}/testimggray.jpg testoutgray.jpg)
add_test(djpeg-static-int djpeg-static -dct int -fast -ppm -outfile testoutint.ppm ${CMAKE_SOURCE_DIR}/testorig.jpg)
add_test(djpeg-static-int-cmp ${CMAKE_COMMAND} -E compare_files ${CMAKE_SOURCE_DIR}/testimgint.ppm testoutint.ppm)
add_test(djpeg-static-fast djpeg-static -dct fast -ppm -outfile testoutfst.ppm ${CMAKE_SOURCE_DIR}/testorig.jpg)
add_test(djpeg-static-fast-cmp ${CMAKE_COMMAND} -E compare_files ${CMAKE_SOURCE_DIR}/testimgfst.ppm testoutfst.ppm)
add_test(djpeg-static-float djpeg-static -dct float -ppm -outfile testoutflt.ppm ${CMAKE_SOURCE_DIR}/testorig.jpg)
if(WITH_SIMD)
add_test(djpeg-static-float-cmp ${CMAKE_COMMAND} -E compare_files ${CMAKE_SOURCE_DIR}/testimgflt.ppm testoutflt.ppm)
else()
add_test(djpeg-static-float-cmp ${CMAKE_COMMAND} -E compare_files ${CMAKE_SOURCE_DIR}/testorig.ppm testoutflt.ppm)
endif()
add_test(djpeg-static-int-1_2 djpeg-static -dct int -scale 1/2 -ppm -outfile testoutint1_2.ppm ${CMAKE_SOURCE_DIR}/testorig.jpg)
add_test(djpeg-static-int-1_2-cmp ${CMAKE_COMMAND} -E compare_files ${CMAKE_SOURCE_DIR}/testimgint1_2.ppm testoutint1_2.ppm)
add_test(djpeg-static-fast-1_2 djpeg-static -dct fast -scale 1/2 -ppm -outfile testoutfst1_2.ppm ${CMAKE_SOURCE_DIR}/testorig.jpg)
add_test(djpeg-static-fast-1_2-cmp ${CMAKE_COMMAND} -E compare_files ${CMAKE_SOURCE_DIR}/testimgfst1_2.ppm testoutfst1_2.ppm)
add_test(djpeg-static-int-1_4 djpeg-static -dct int -scale 1/4 -ppm -outfile testoutint1_4.ppm ${CMAKE_SOURCE_DIR}/testorig.jpg)
add_test(djpeg-static-int-1_4-cmp ${CMAKE_COMMAND} -E compare_files ${CMAKE_SOURCE_DIR}/testimgint1_4.ppm testoutint1_4.ppm)
add_test(djpeg-static-fast-1_4 djpeg-static -dct fast -scale 1/4 -ppm -outfile testoutfst1_4.ppm ${CMAKE_SOURCE_DIR}/testorig.jpg)
add_test(djpeg-static-fast-1_4-cmp ${CMAKE_COMMAND} -E compare_files ${CMAKE_SOURCE_DIR}/testimgfst1_4.ppm testoutfst1_4.ppm)
add_test(djpeg-static-int-1_8 djpeg-static -dct int -scale 1/8 -ppm -outfile testoutint1_8.ppm ${CMAKE_SOURCE_DIR}/testorig.jpg)
add_test(djpeg-static-int-1_8-cmp ${CMAKE_COMMAND} -E compare_files ${CMAKE_SOURCE_DIR}/testimgint1_8.ppm testoutint1_8.ppm)
add_test(djpeg-static-fast-1_8 djpeg-static -dct fast -scale 1/8 -ppm -outfile testoutfst1_8.ppm ${CMAKE_SOURCE_DIR}/testorig.jpg)
add_test(djpeg-static-fast-1_8-cmp ${CMAKE_COMMAND} -E compare_files ${CMAKE_SOURCE_DIR}/testimgfst1_8.ppm testoutfst1_8.ppm)
add_test(djpeg-static-256 djpeg-static -dct int -bmp -colors 256 -outfile testout.bmp ${CMAKE_SOURCE_DIR}/testorig.jpg)
add_test(djpeg-static-256-cmp ${CMAKE_COMMAND} -E compare_files ${CMAKE_SOURCE_DIR}/testimg.bmp testout.bmp)
add_test(cjpeg-static-prog cjpeg-static -dct int -progressive -outfile testoutp.jpg ${CMAKE_SOURCE_DIR}/testorig.ppm)
add_test(cjpeg-static-prog-cmp ${CMAKE_COMMAND} -E compare_files ${CMAKE_SOURCE_DIR}/testimgp.jpg testoutp.jpg)
add_test(jpegtran-static-prog jpegtran-static -outfile testoutt.jpg testoutp.jpg)
add_test(jpegtran-static-prog-cmp ${CMAKE_COMMAND} -E compare_files ${CMAKE_SOURCE_DIR}/testimgint.jpg testoutt.jpg)
if(WITH_ARITH_ENC)
add_test(cjpeg-static-ari cjpeg-static -dct int -arithmetic -outfile testoutari.jpg ${CMAKE_SOURCE_DIR}/testorig.ppm)
add_test(cjpeg-static-ari-cmp ${CMAKE_COMMAND} -E compare_files ${CMAKE_SOURCE_DIR}/testimgari.jpg testoutari.jpg)
add_test(jpegtran-static-toari jpegtran-static -arithmetic -outfile testouta.jpg ${CMAKE_SOURCE_DIR}/testimgint.jpg)
add_test(jpegtran-static-toari-cmp ${CMAKE_COMMAND} -E compare_files ${CMAKE_SOURCE_DIR}/testimgari.jpg testouta.jpg)
endif()
if(WITH_ARITH_DEC)
add_test(djpeg-static-ari djpeg-static -dct int -fast -ppm -outfile testoutari.ppm ${CMAKE_SOURCE_DIR}/testimgari.jpg)
add_test(djpeg-static-ari-cmp ${CMAKE_COMMAND} -E compare_files ${CMAKE_SOURCE_DIR}/testimgari.ppm testoutari.ppm)
add_test(jpegtran-static-fromari jpegtran-static -outfile testouta.jpg ${CMAKE_SOURCE_DIR}/testimgari.jpg)
add_test(jpegtran-static-fromari-cmp ${CMAKE_COMMAND} -E compare_files ${CMAKE_SOURCE_DIR}/testimgint.jpg testouta.jpg)
endif()
add_test(jpegtran-static-crop jpegtran-static -crop 120x90+20+50 -transpose -perfect -outfile testoutcrop.jpg ${CMAKE_SOURCE_DIR}/testorig.jpg)
add_test(jpegtran-static-crop-cmp ${CMAKE_COMMAND} -E compare_files ${CMAKE_SOURCE_DIR}/testimgcrop.jpg testoutcrop.jpg)
add_custom_target(testclean COMMAND ${CMAKE_COMMAND} -P
${CMAKE_SOURCE_DIR}/cmakescripts/testclean.cmake)
#
# Installer
#
if(MSVC)
set(INST_PLATFORM "Visual C++")
set(INST_NAME ${CMAKE_PROJECT_NAME}-${VERSION}-vc)
set(INST_DIR ${CMAKE_PROJECT_NAME})
elseif(MINGW)
set(INST_PLATFORM GCC)
set(INST_NAME ${CMAKE_PROJECT_NAME}-${VERSION}-gcc)
set(INST_DIR ${CMAKE_PROJECT_NAME}-gcc)
set(INST_DEFS -DGCC)
endif()
if(64BIT)
set(INST_PLATFORM "${INST_PLATFORM} 64-bit")
set(INST_NAME ${INST_NAME}64)
set(INST_DIR ${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()
configure_file(release/libjpeg-turbo.nsi.in libjpeg-turbo.nsi @ONLY)
add_custom_target(installer
makensis -nocd ${INST_DEFS} libjpeg-turbo.nsi
DEPENDS jpeg jpeg-static turbojpeg turbojpeg-static rdjpgcom wrjpgcom
cjpeg djpeg jpegtran tjbench
SOURCES libjpeg-turbo.nsi)
install(TARGETS jpeg-static turbojpeg turbojpeg-static rdjpgcom wrjpgcom tjbench
ARCHIVE DESTINATION lib
LIBRARY DESTINATION lib
RUNTIME DESTINATION bin
)
install(FILES ${CMAKE_SOURCE_DIR}/LGPL.txt ${CMAKE_SOURCE_DIR}/LICENSE.txt
${CMAKE_SOURCE_DIR}/README ${CMAKE_SOURCE_DIR}/README-turbo.txt
${CMAKE_SOURCE_DIR}/libjpeg.txt ${CMAKE_SOURCE_DIR}/usage.txt
DESTINATION doc)
install(FILES ${CMAKE_BINARY_DIR}/jconfig.h ${CMAKE_SOURCE_DIR}/jerror.h
${CMAKE_SOURCE_DIR}/jmorecfg.h ${CMAKE_SOURCE_DIR}/jpeglib.h
${CMAKE_SOURCE_DIR}/turbojpeg.h DESTINATION include)

227
jni/jpeg-turbo/ChangeLog.txt Normal file
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@ -0,0 +1,227 @@
1.1.90 (1.2 beta1)
==================
[1] Added a JNI wrapper for TurboJPEG/OSS. See java/README for more details.
[2] TurboJPEG/OSS can now scale down images during decompression.
[3] Added SIMD routines for RGB-to-grayscale color conversion, which
significantly improves the performance of grayscale JPEG compression from an
RGB source image.
[4] Improved performance for non-x86 machines.
[5] Added a function to the TurboJPEG API which performs lossless transforms.
This function uses the same back end as jpegtran, but it performs transcoding
entirely in memory and allows multiple transforms and/or crop operations to be
batched together, so the source coefficients only need to be read once. This
is useful when generating image tiles from a single source JPEG.
[6] Modified jpgtest to benchmark the new scaled decompression and lossless
transform features in TurboJPEG/OSS.
[7] Added support for 4:4:0 (transposed 4:2:2) subsampling in TurboJPEG, which
was necessary in order for it to read 4:2:2 JPEG files that had been losslessly
transposed or rotated 90 degrees.
[8] All legacy VirtualGL code has been re-factored, and this has allowed
libjpeg-turbo, in its entirety, to be re-licensed under a BSD-style license.
[9] libjpeg-turbo can now be built with YASM.
[10] Added SIMD acceleration for ARM Linux and iOS platforms that support
NEON instructions.
[11] Refactored the TurboJPEG C API so that it uses pixel formats to define the
size and component order of the uncompressed source/destination images as well
as uses the libjpeg memory source and destination managers. The latter allows
the TurboJPEG compressor to grow the JPEG buffer as necessary.
[12] Eliminated errors in the output of jpegtran on Windows that occurred when
the application was invoked using I/O redirection
(jpegtran <input.jpg >output.jpg).
[13] The inclusion of libjpeg v7 and v8 emulation as well as arithmetic coding
support in libjpeg-turbo v1.1.0 introduced several new error constants in
jerror.h, and these were mistakenly enabled for all emulation modes, causing
the error enum in libjpeg-turbo to sometimes have different values than the
same enum in libjpeg. This represents an ABI incompatibility, and it caused
problems with rare applications that took specific action based on a particular
error value. The fix was to include the new error constants conditionally
based on whether libjpeg v7 or v8 emulation was enabled.
[14] Fixed an issue whereby Windows applications that used libjpeg-turbo would
fail to compile if the Windows system headers were included before jpeglib.h.
This issue was caused by a conflict in the definition of the INT32 type.
[15] Implemented a more efficient version of TJBUFSIZE() which computes a
worst-case JPEG size based on the level of chrominance subsampling.
[16] Fixed 32-bit supplementary package for amd64 Debian systems which was
broken by enhancements to the packaging system in 1.1.
[17] Support for decoding JPEG images that use the CMYK or YCCK colorspaces.
1.1.1
=====
[1] Fixed a 1-pixel error in row 0, column 21 of the luminance plane generated
by tjEncodeYUV().
[2] libjpeg-turbo's accelerated Huffman decoder previously ignored unexpected
markers found in the middle of the JPEG data stream during decompression. It
will now hand off decoding of a particular block to the unaccelerated Huffman
decoder if an unexpected marker is found, so that the unaccelerated Huffman
decoder can generate an appropriate warning.
[3] Older versions of MinGW64 prefixed symbol names with underscores by
default, which differed from the behavior of 64-bit Visual C++. MinGW64 1.0
has adopted the behavior of 64-bit Visual C++ as the default, so to accommodate
this, the libjpeg-turbo SIMD function names are no longer prefixed with an
underscore when building with MinGW64. This means that, when building
libjpeg-turbo with older versions of MinGW64, you will now have to add
-fno-leading-underscore to the CFLAGS.
[4] Fixed a regression bug in the NSIS script that caused the Windows installer
build to fail when using the Visual Studio IDE.
[5] Fixed a bug in jpeg_read_coefficients() whereby it would not initialize
cinfo->image_width and cinfo->image_height if libjpeg v7 or v8 emulation was
enabled. This specifically caused the jpegoptim program to fail if it was
linked against a version of libjpeg-turbo that was built with libjpeg v7 or v8
emulation.
[6] Eliminated excessive I/O overhead that occurred when reading BMP files in
cjpeg.
[7] Eliminated errors in the output of cjpeg on Windows that occurred when the
application was invoked using I/O redirection (cjpeg <inputfile >output.jpg).
1.1.0
=====
[1] The algorithm used by the SIMD quantization function cannot produce correct
results when the JPEG quality is >= 98 and the fast integer forward DCT is
used. Thus, the non-SIMD quantization function is now used for those cases,
and libjpeg-turbo should now produce identical output to libjpeg v6b in all
cases.
[2] Despite the above, the fast integer forward DCT still degrades somewhat for
JPEG qualities greater than 95, so TurboJPEG/OSS will now automatically use the
slow integer forward DCT when generating JPEG images of quality 96 or greater.
This reduces compression performance by as much as 15% for these high-quality
images but is necessary to ensure that the images are perceptually lossless.
It also ensures that the library can avoid the performance pitfall created by
[1].
[3] Ported jpgtest.cxx to pure C to avoid the need for a C++ compiler.
[4] Fixed visual artifacts in grayscale JPEG compression caused by a typo in
the RGB-to-luminance lookup tables.
[5] The Windows distribution packages now include the libjpeg run-time programs
(cjpeg, etc.)
[6] All packages now include jpgtest.
[7] The TurboJPEG dynamic library now uses versioned symbols.
[8] Added two new TurboJPEG API functions, tjEncodeYUV() and
tjDecompressToYUV(), to replace the somewhat hackish TJ_YUV flag.
1.0.90 (1.1 beta1)
==================
[1] Added emulation of the libjpeg v7 and v8 APIs and ABIs. See
README-turbo.txt for more details. This feature was sponsored by CamTrace SAS.
[2] Created a new CMake-based build system for the Visual C++ and MinGW builds.
[3] TurboJPEG/OSS can now compress from/decompress to grayscale bitmaps.
[4] jpgtest can now be used to test decompression performance with existing
JPEG images.
[5] If the default install prefix (/opt/libjpeg-turbo) is used, then
'make install' now creates /opt/libjpeg-turbo/lib32 and
/opt/libjpeg-turbo/lib64 sym links to duplicate the behavior of the binary
packages.
[6] All symbols in the libjpeg-turbo dynamic library are now versioned, even
when the library is built with libjpeg v6b emulation.
[7] Added arithmetic encoding and decoding support (can be disabled with
configure or CMake options)
[8] Added a TJ_YUV flag to TurboJPEG/OSS which causes both the compressor and
decompressor to output planar YUV images.
[9] Added an extended version of tjDecompressHeader() to TurboJPEG/OSS which
allows the caller to determine the type of subsampling used in a JPEG image.
[10] Added further protections against invalid Huffman codes.
1.0.1
=====
[1] The Huffman decoder will now handle erroneous Huffman codes (for instance,
from a corrupt JPEG image.) Previously, these would cause libjpeg-turbo to
crash under certain circumstances.
[2] Fixed typo in SIMD dispatch routines which was causing 4:2:2 upsampling to
be used instead of 4:2:0 when decompressing JPEG images using SSE2 code.
[3] configure script will now automatically determine whether the
INCOMPLETE_TYPES_BROKEN macro should be defined.
1.0.0
=====
[1] 2983700: Further FreeBSD build tweaks (no longer necessary to specify
--host when configuring on a 64-bit system)
[2] Created sym. links in the Unix/Linux packages so that the TurboJPEG
include file can always be found in /opt/libjpeg-turbo/include, the 32-bit
static libraries can always be found in /opt/libjpeg-turbo/lib32, and the
64-bit static libraries can always be found in /opt/libjpeg-turbo/lib64.
[3] The Unix/Linux distribution packages now include the libjpeg run-time
programs (cjpeg, etc.) and man pages.
[4] Created a 32-bit supplementary package for amd64 Debian systems which
contains just the 32-bit libjpeg-turbo libraries.
[5] Moved the libraries from */lib32 to */lib in the i386 Debian package.
[6] Include distribution package for Cygwin
[7] No longer necessary to specify --without-simd on non-x86 architectures, and
unit tests now work on those architectures.
0.0.93
======
[1] 2982659, Fixed x86-64 build on FreeBSD systems
[2] 2988188: Added support for Windows 64-bit systems
0.0.91
======
[1] Added documentation to .deb packages
[2] 2968313: Fixed data corruption issues when decompressing large JPEG images
and/or using buffered I/O with the libjpeg-turbo decompressor
0.0.90
======
Initial release

314
jni/jpeg-turbo/Makefile.am Normal file
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lib_LTLIBRARIES = libjpeg.la libturbojpeg.la
libjpeg_la_LDFLAGS = -version-info ${SO_MAJOR_VERSION}:${SO_MINOR_VERSION} -no-undefined
libturbojpeg_la_LDFLAGS = -avoid-version -no-undefined
libturbojpeg_la_CFLAGS = -DAVOID_TABLES -O3 -fstrict-aliasing -fprefetch-loop-arrays -DANDROID \
-DANDROID_TILE_BASED_DECODE -DENABLE_ANDROID_NULL_CONVERT -DANDROID_JPEG_USE_VENUM
include_HEADERS = jerror.h jmorecfg.h jpeglib.h turbojpeg.h
nodist_include_HEADERS = jconfig.h
HDRS = jchuff.h jdct.h jdhuff.h jerror.h jinclude.h jmemsys.h jmorecfg.h \
jpegint.h jpeglib.h jversion.h jsimd.h jsimddct.h jpegcomp.h
libjpeg_la_SOURCES = $(HDRS) jcapimin.c jcapistd.c jccoefct.c jccolor.c \
jcdctmgr.c jchuff.c jcinit.c jcmainct.c jcmarker.c jcmaster.c \
jcomapi.c jcparam.c jcphuff.c jcprepct.c jcsample.c jctrans.c \
jdapimin.c jdapistd.c jdatadst.c jdatasrc.c jdcoefct.c jdcolor.c \
jddctmgr.c jdhuff.c jdinput.c jdmainct.c jdmarker.c jdmaster.c \
jdmerge.c jdphuff.c jdpostct.c jdsample.c jdtrans.c jerror.c \
jfdctflt.c jfdctfst.c jfdctint.c jidctflt.c jidctfst.c jidctint.c \
jidctred.c jquant1.c jquant2.c jutils.c jmemmgr.c jmemnobs.c
if WITH_ARITH
libjpeg_la_SOURCES += jaricom.c
endif
if WITH_ARITH_ENC
libjpeg_la_SOURCES += jcarith.c
endif
if WITH_ARITH_DEC
libjpeg_la_SOURCES += jdarith.c
endif
libturbojpeg_la_SOURCES = $(libjpeg_la_SOURCES) turbojpeg.c turbojpeg.h \
transupp.c transupp.h jdatadst-tj.c jdatasrc-tj.c
SUBDIRS = java
if WITH_JAVA
libturbojpeg_la_SOURCES += turbojpeg-jni.c
libturbojpeg_la_CFLAGS += ${JNI_CFLAGS}
TJMAPFILE = turbojpeg-mapfile.jni
else
TJMAPFILE = turbojpeg-mapfile
endif
libturbojpeg_la_SOURCES += $(TJMAPFILE)
if VERSION_SCRIPT
libturbojpeg_la_LDFLAGS += $(VERSION_SCRIPT_FLAG)$(srcdir)/$(TJMAPFILE)
libjpeg_la_LDFLAGS += $(VERSION_SCRIPT_FLAG)libjpeg.map
endif
if WITH_SIMD
SUBDIRS += simd
libjpeg_la_LIBADD = simd/libsimd.la
libturbojpeg_la_LIBADD = simd/libsimd.la
else
libjpeg_la_SOURCES += jsimd_none.c
endif
bin_PROGRAMS = cjpeg djpeg jpegtran rdjpgcom wrjpgcom tjbench
noinst_PROGRAMS = tjunittest
tjbench_SOURCES = tjbench.c bmp.h bmp.c tjutil.h tjutil.c rdbmp.c rdppm.c \
wrbmp.c wrppm.c
tjbench_LDADD = libturbojpeg.la libjpeg.la -lm
tjbench_CFLAGS = -DBMP_SUPPORTED -DPPM_SUPPORTED
tjunittest_SOURCES = tjunittest.c tjutil.h tjutil.c
tjunittest_LDADD = libturbojpeg.la
cjpeg_SOURCES = cdjpeg.h cderror.h cdjpeg.c cjpeg.c rdbmp.c rdgif.c \
rdppm.c rdswitch.c rdtarga.c
cjpeg_LDADD = libjpeg.la
cjpeg_CFLAGS = -DBMP_SUPPORTED -DGIF_SUPPORTED -DPPM_SUPPORTED \
-DTARGA_SUPPORTED
djpeg_SOURCES = cdjpeg.h cderror.h cdjpeg.c djpeg.c rdcolmap.c rdswitch.c \
wrbmp.c wrgif.c wrppm.c wrtarga.c
djpeg_LDADD = libjpeg.la
djpeg_CFLAGS = -DBMP_SUPPORTED -DGIF_SUPPORTED -DPPM_SUPPORTED \
-DTARGA_SUPPORTED
jpegtran_SOURCES = jpegtran.c rdswitch.c cdjpeg.c transupp.c transupp.h
jpegtran_LDADD = libjpeg.la
rdjpgcom_SOURCES = rdjpgcom.c
rdjpgcom_LDADD = libjpeg.la
wrjpgcom_SOURCES = wrjpgcom.c
wrjpgcom_LDADD = libjpeg.la
dist_man1_MANS = cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 wrjpgcom.1
DOCS= README install.txt usage.txt wizard.txt example.c libjpeg.txt \
structure.txt coderules.txt filelist.txt jconfig.txt change.log \
README-turbo.txt rdrle.c wrrle.c BUILDING.txt ChangeLog.txt
TESTFILES= testorig.jpg testorig.ppm testimg.bmp testimgflt.jpg \
testimgfst.jpg testimgint.jpg testimgp.jpg testimgflt.ppm testimgfst.ppm \
testimgint.ppm testimgflt-nosimd.jpg testimgcrop.jpg testimgari.jpg \
testimgari.ppm testimgfst100.jpg testimggray.jpg testimgfst1_2.ppm \
testimgfst1_4.ppm testimgfst1_8.ppm testimgint1_2.ppm testimgint1_4.ppm \
testimgint1_8.ppm
EXTRA_DIST = win release $(DOCS) $(TESTFILES) CMakeLists.txt \
sharedlib/CMakeLists.txt cmakescripts libjpeg.map.in doc doxygen.config
dist-hook:
rm -rf `find $(distdir) -name .svn`
test: testclean all
if WITH_JAVA
$(JAVA) -cp java/turbojpeg.jar -Djava.library.path=.libs TJUnitTest
$(JAVA) -cp java/turbojpeg.jar -Djava.library.path=.libs TJUnitTest -bi
$(JAVA) -cp java/turbojpeg.jar -Djava.library.path=.libs TJUnitTest -yuv
$(JAVA) -cp java/turbojpeg.jar -Djava.library.path=.libs TJUnitTest -yuv -bi
endif
./tjunittest
./tjunittest -alloc
./tjunittest -yuv
./cjpeg -dct int -outfile testoutint.jpg $(srcdir)/testorig.ppm
cmp $(srcdir)/testimgint.jpg testoutint.jpg
./cjpeg -dct fast -opt -outfile testoutfst.jpg $(srcdir)/testorig.ppm
cmp $(srcdir)/testimgfst.jpg testoutfst.jpg
./cjpeg -dct fast -quality 100 -opt -outfile testoutfst100.jpg $(srcdir)/testorig.ppm
cmp $(srcdir)/testimgfst100.jpg testoutfst100.jpg
./cjpeg -dct float -outfile testoutflt.jpg $(srcdir)/testorig.ppm
if WITH_SSE_FLOAT_DCT
cmp $(srcdir)/testimgflt.jpg testoutflt.jpg
else
cmp $(srcdir)/testimgflt-nosimd.jpg testoutflt.jpg
endif
./cjpeg -dct int -grayscale -outfile testoutgray.jpg $(srcdir)/testorig.ppm
cmp $(srcdir)/testimggray.jpg testoutgray.jpg
./djpeg -dct int -fast -ppm -outfile testoutint.ppm $(srcdir)/testorig.jpg
cmp $(srcdir)/testimgint.ppm testoutint.ppm
./djpeg -dct fast -ppm -outfile testoutfst.ppm $(srcdir)/testorig.jpg
cmp $(srcdir)/testimgfst.ppm testoutfst.ppm
./djpeg -dct float -ppm -outfile testoutflt.ppm $(srcdir)/testorig.jpg
if WITH_SSE_FLOAT_DCT
cmp $(srcdir)/testimgflt.ppm testoutflt.ppm
else
cmp $(srcdir)/testorig.ppm testoutflt.ppm
endif
./djpeg -dct int -scale 1/2 -ppm -outfile testoutint1_2.ppm $(srcdir)/testorig.jpg
cmp $(srcdir)/testimgint1_2.ppm testoutint1_2.ppm
./djpeg -dct fast -scale 1/2 -ppm -outfile testoutfst1_2.ppm $(srcdir)/testorig.jpg
cmp $(srcdir)/testimgfst1_2.ppm testoutfst1_2.ppm
./djpeg -dct int -scale 1/4 -ppm -outfile testoutint1_4.ppm $(srcdir)/testorig.jpg
cmp $(srcdir)/testimgint1_4.ppm testoutint1_4.ppm
./djpeg -dct fast -scale 1/4 -ppm -outfile testoutfst1_4.ppm $(srcdir)/testorig.jpg
cmp $(srcdir)/testimgfst1_4.ppm testoutfst1_4.ppm
./djpeg -dct int -scale 1/8 -ppm -outfile testoutint1_8.ppm $(srcdir)/testorig.jpg
cmp $(srcdir)/testimgint1_8.ppm testoutint1_8.ppm
./djpeg -dct fast -scale 1/8 -ppm -outfile testoutfst1_8.ppm $(srcdir)/testorig.jpg
cmp $(srcdir)/testimgfst1_8.ppm testoutfst1_8.ppm
./djpeg -dct int -bmp -colors 256 -outfile testout.bmp $(srcdir)/testorig.jpg
cmp $(srcdir)/testimg.bmp testout.bmp
if WITH_ARITH_ENC
./cjpeg -dct int -arithmetic -outfile testoutari.jpg $(srcdir)/testorig.ppm
cmp $(srcdir)/testimgari.jpg testoutari.jpg
./jpegtran -arithmetic -outfile testouta.jpg $(srcdir)/testimgint.jpg
cmp $(srcdir)/testimgari.jpg testouta.jpg
endif
if WITH_ARITH_DEC
./djpeg -dct int -fast -ppm -outfile testoutari.ppm $(srcdir)/testimgari.jpg
cmp $(srcdir)/testimgari.ppm testoutari.ppm
./jpegtran -outfile testouta.jpg $(srcdir)/testimgari.jpg
cmp $(srcdir)/testimgint.jpg testouta.jpg
endif
./cjpeg -dct int -progressive -outfile testoutp.jpg $(srcdir)/testorig.ppm
cmp $(srcdir)/testimgp.jpg testoutp.jpg
./jpegtran -outfile testoutt.jpg testoutp.jpg
cmp $(srcdir)/testimgint.jpg testoutt.jpg
./jpegtran -crop 120x90+20+50 -transpose -perfect -outfile testoutcrop.jpg $(srcdir)/testorig.jpg
cmp $(srcdir)/testimgcrop.jpg testoutcrop.jpg
testclean:
rm -f testout*
rm -f *_GRAY_*.bmp
rm -f *_GRAY_*.png
rm -f *_GRAY_*.ppm
rm -f *_GRAY_*.jpg
rm -f *_GRAY.yuv
rm -f *_420_*.bmp
rm -f *_420_*.png
rm -f *_420_*.ppm
rm -f *_420_*.jpg
rm -f *_420.yuv
rm -f *_422_*.bmp
rm -f *_422_*.png
rm -f *_422_*.ppm
rm -f *_422_*.jpg
rm -f *_422.yuv
rm -f *_444_*.bmp
rm -f *_444_*.png
rm -f *_444_*.ppm
rm -f *_444_*.jpg
rm -f *_444.yuv
rm -f *_440_*.bmp
rm -f *_440_*.png
rm -f *_440_*.ppm
rm -f *_440_*.jpg
rm -f *_440.yuv
if X86_64
install-exec-hook:
__PREFIX=`echo ${prefix} | sed -e 's@\/*$$@@'`; \
if [ "$$__PREFIX" = "/opt/libjpeg-turbo" ]; then \
cd $(DESTDIR)/${prefix}; \
if [ -d lib -a ! -d lib64 -a ! -h lib64 ]; then \
$(LN_S) lib lib64; \
fi \
fi
else
install-exec-hook:
__PREFIX=`echo ${prefix} | sed -e 's@\/*$$@@'`; \
if [ "$$__PREFIX" = "/opt/libjpeg-turbo" ]; then \
cd $(DESTDIR)/${prefix}; \
if [ -d lib -a ! -d lib32 -a ! -h lib32 ]; then \
$(LN_S) lib lib32; \
fi \
fi
endif
rpm: all
TMPDIR=`mktemp -d /tmp/${PACKAGE_NAME}-build.XXXXXX`; \
mkdir -p $$TMPDIR/RPMS; \
ln -fs `pwd` $$TMPDIR/BUILD; \
rm -f ${PACKAGE_NAME}-${VERSION}.${RPMARCH}.rpm; \
rpmbuild -bb --define "_blddir $$TMPDIR/buildroot" \
--define "_topdir $$TMPDIR" --define "_srcdir ${srcdir}" \
--target ${RPMARCH} pkgscripts/libjpeg-turbo.spec; \
cp $$TMPDIR/RPMS/${RPMARCH}/${PACKAGE_NAME}-${VERSION}-${BUILD}.${RPMARCH}.rpm \
${PACKAGE_NAME}-${VERSION}.${RPMARCH}.rpm; \
rm -rf $$TMPDIR
srpm: dist-gzip
TMPDIR=`mktemp -d /tmp/${PACKAGE_NAME}-build.XXXXXX`; \
mkdir -p $$TMPDIR/RPMS; \
mkdir -p $$TMPDIR/SRPMS; \
mkdir -p $$TMPDIR/BUILD; \
mkdir -p $$TMPDIR/SOURCES; \
mkdir -p $$TMPDIR/SPECS; \
rm -f ${PACKAGE_NAME}-${VERSION}.src.rpm; \
cp ${PACKAGE_NAME}-${VERSION}.tar.gz $$TMPDIR/SOURCES; \
cat pkgscripts/libjpeg-turbo.spec | sed s/%{_blddir}/%{_tmppath}/g \
| sed s@%{_srcdir}/@@g | sed s/#--\>//g \
> $$TMPDIR/SPECS/libjpeg-turbo.spec; \
rpmbuild -bs --define "_topdir $$TMPDIR" $$TMPDIR/SPECS/libjpeg-turbo.spec; \
cp $$TMPDIR/SRPMS/${PACKAGE_NAME}-${VERSION}-${BUILD}.src.rpm \
${PACKAGE_NAME}-${VERSION}.src.rpm; \
rm -rf $$TMPDIR
deb: all
sh pkgscripts/makedpkg
if X86_64
udmg: all
sh pkgscripts/makemacpkg universal ${BUILDDIR32}
endif
dmg: all
sh pkgscripts/makemacpkg
if X86_64
csunpkg: all
sh pkgscripts/makesunpkg combined ${BUILDDIR32}
endif
sunpkg: all
sh pkgscripts/makesunpkg
cygwinpkg: all
sh pkgscripts/makecygwinpkg

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@ -0,0 +1,289 @@
libjpeg-turbo note: This file is mostly taken from the libjpeg v8b README
file, and it is included only for reference. Some parts of it may not apply to
libjpeg-turbo. Please see README-turbo.txt for information specific to the
turbo version.
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.
This software is the work of Tom Lane, Guido Vollbeding, Philip Gladstone,
Bill Allombert, Jim Boucher, Lee Crocker, Bob Friesenhahn, Ben Jackson,
Julian Minguillon, Luis Ortiz, George Phillips, Davide Rossi, Ge' Weijers,
and other members of the Independent JPEG Group.
IJG is not affiliated with the official ISO JPEG standards committee.
DOCUMENTATION ROADMAP
=====================
This file contains the following sections:
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.
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).
wizard.txt Advanced usage instructions for JPEG wizards only.
change.log Version-to-version change highlights.
Programmer and internal documentation:
libjpeg.txt How to use the JPEG library in your own programs.
example.c Sample code for calling the JPEG library.
structure.txt Overview of the JPEG library's internal structure.
filelist.txt Road map of IJG files.
coderules.txt Coding style rules --- please read if you contribute code.
Please read at least 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
the order listed) before diving into the code.
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 gray-scale images. JPEG's strong suit is compressing
photographic images or other types of images which 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.)
This software implements JPEG baseline, extended-sequential, and progressive
compression processes. Provision is made for supporting all variants of these
processes, although some uncommon parameter settings aren't implemented yet.
We have made no provision for supporting the hierarchical or lossless
processes defined in the standard.
We provide a set of library routines for reading and writing JPEG image files,
plus two sample applications "cjpeg" and "djpeg", which use the library to
perform conversion between JPEG and some other popular image file formats.
The library is intended to be reused in other applications.
In order to support file conversion and viewing software, we have included
considerable functionality beyond the bare JPEG coding/decoding capability;
for example, the color quantization modules are not strictly part of JPEG
decoding, but they are essential for output to colormapped file formats or
colormapped displays. These extra functions can be compiled out of the
library if not required for a particular application.
We have also included "jpegtran", a utility for lossless transcoding between
different JPEG processes, and "rdjpgcom" and "wrjpgcom", two simple
applications for inserting and extracting textual comments in JFIF files.
The emphasis in designing this software has been on achieving portability and
flexibility, while also making it fast enough to be useful. In particular,
the software is not intended to be read as a tutorial on JPEG. (See the
REFERENCES section for introductory material.) Rather, it is intended to
be reliable, portable, industrial-strength code. We do not claim to have
achieved that goal in every aspect of the software, but we strive for it.
We welcome the use of this software as a component of commercial products.
No royalty is required, but we do ask for an acknowledgement in product
documentation, as described under LEGAL ISSUES.
LEGAL ISSUES
============
In plain English:
1. We don't promise that this software works. (But if you find any bugs,
please let us know!)
2. You can use this software for whatever you want. You don't have to pay us.
3. You may not pretend that you wrote this software. If you use it in a
program, you must acknowledge somewhere in your documentation that
you've used the IJG code.
In legalese:
The authors make NO WARRANTY or representation, either express or implied,
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) 1991-2010, Thomas G. Lane, Guido Vollbeding.
All Rights Reserved except as specified below.
Permission is hereby granted to use, copy, modify, and distribute this
software (or portions thereof) for any purpose, without fee, subject to these
conditions:
(1) If any part of the source code for this software is distributed, then this
README file must be included, with this copyright and no-warranty notice
unaltered; and any additions, deletions, or changes to the original files
must be clearly indicated in accompanying documentation.
(2) If only executable code is distributed, then the accompanying
documentation must state that "this software is based in part on the work of
the Independent JPEG Group".
(3) Permission for use of this software is granted only if the user accepts
full responsibility for any undesirable consequences; the authors accept
NO LIABILITY for damages of any kind.
These conditions apply to any software derived from or based on the IJG code,
not just to the unmodified library. If you use our work, you ought to
acknowledge us.
Permission is NOT granted for the use of any IJG author's name or company name
in advertising or publicity relating to this software or products derived from
it. This software may be referred to only as "the Independent JPEG Group's
software".
We specifically permit and encourage the use of this software as the basis of
commercial products, provided that all warranty or liability claims are
assumed by the product vendor.
ansi2knr.c is included in this distribution by permission of L. Peter Deutsch,
sole proprietor of its copyright holder, Aladdin Enterprises of Menlo Park, CA.
ansi2knr.c is NOT covered by the above copyright and conditions, but instead
by the usual distribution terms of the Free Software Foundation; principally,
that you must include source code if you redistribute it. (See the file
ansi2knr.c for full details.) However, since ansi2knr.c is not needed as part
of any program generated from the IJG code, this does not limit you more than
the foregoing paragraphs do.
The Unix configuration script "configure" was produced with GNU Autoconf.
It is copyright by the Free Software Foundation but is freely distributable.
The same holds for its supporting scripts (config.guess, config.sub,
ltmain.sh). Another support script, install-sh, is copyright by X Consortium
but is also freely distributable.
The IJG distribution formerly included code to read and write GIF files.
To avoid entanglement with the Unisys LZW patent, GIF reading support has
been removed altogether, and the GIF writer has been simplified to produce
"uncompressed GIFs". This technique does not use the LZW algorithm; the
resulting GIF files are larger than usual, but are readable by all standard
GIF decoders.
We are required to state that
"The Graphics Interchange Format(c) is the Copyright property of
CompuServe Incorporated. GIF(sm) is a Service Mark property of
CompuServe Incorporated."
REFERENCES
==========
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.
(Adjacent articles in that issue discuss MPEG motion picture compression,
applications of JPEG, and related topics.) If you don't have the CACM issue
handy, a PostScript file containing a revised version of Wallace's article is
available at http://www.ijg.org/files/wallace.ps.gz. The file (actually
a preprint for an article that appeared in IEEE Trans. Consumer Electronics)
omits the sample images that appeared in CACM, but it includes corrections
and some added material. Note: the Wallace article is copyright ACM and IEEE,
and it may not be used for commercial purposes.
A somewhat less technical, more leisurely introduction to JPEG can be found in
"The Data Compression Book" by Mark Nelson and Jean-loup Gailly, published by
M&T Books (New York), 2nd ed. 1996, ISBN 1-55851-434-1. This book provides
good explanations and example C code for a multitude of compression methods
including JPEG. It is an excellent source if you are comfortable reading C
code but don't know much about data compression in general. The book's JPEG
sample code is far from industrial-strength, but when you are ready to look
at a full implementation, you've got one here...
The best currently available description of JPEG is the textbook "JPEG Still
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).
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
titled "Digital Compression and Coding of Continuous-tone Still Images,
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.
The JPEG standard does not specify all details of an interchangeable file
format. For the omitted details we follow the "JFIF" conventions, revision
1.02. JFIF 1.02 has been adopted as an Ecma International Technical Report
and thus received a formal publication status. It is available as a free
download in PDF format from
http://www.ecma-international.org/publications/techreports/E-TR-098.htm.
A PostScript version of the JFIF document is available at
http://www.ijg.org/files/jfif.ps.gz. There is also a plain text version at
http://www.ijg.org/files/jfif.txt.gz, but it is missing the figures.
The TIFF 6.0 file format specification can be obtained by FTP from
ftp://ftp.sgi.com/graphics/tiff/TIFF6.ps.gz. The JPEG incorporation scheme
found in the TIFF 6.0 spec of 3-June-92 has a number of serious problems.
IJG does not recommend use of the TIFF 6.0 design (TIFF Compression tag 6).
Instead, we recommend the JPEG design proposed by TIFF Technical Note #2
(Compression tag 7). Copies of this Note can be obtained from
http://www.ijg.org/files/. It is expected that the next revision
of the TIFF spec will replace the 6.0 JPEG design with the Note's design.
Although IJG's own code does not support TIFF/JPEG, the free libtiff library
uses our library to implement TIFF/JPEG per the Note.
ARCHIVE LOCATIONS
=================
The "official" archive site for this software is www.ijg.org.
The most recent released version can always be found there in
directory "files". This particular version will be archived as
http://www.ijg.org/files/jpegsrc.v8b.tar.gz, and in Windows-compatible
"zip" archive format as http://www.ijg.org/files/jpegsr8b.zip.
The JPEG FAQ (Frequently Asked Questions) article is a source of some
general information about JPEG.
It is available on the World Wide Web at http://www.faqs.org/faqs/jpeg-faq/
and other news.answers archive sites, including the official news.answers
archive at rtfm.mit.edu: ftp://rtfm.mit.edu/pub/usenet/news.answers/jpeg-faq/.
If you don't have Web or FTP access, send e-mail to mail-server@rtfm.mit.edu
with body
send usenet/news.answers/jpeg-faq/part1
send usenet/news.answers/jpeg-faq/part2
FILE FORMAT WARS
================
The ISO JPEG standards committee actually promotes different formats like
"JPEG 2000" or "JPEG XR" which are incompatible with original DCT-based
JPEG. IJG therefore does not support these formats (see REFERENCES). Indeed,
one of the original reasons for developing this free software was to help
force convergence on common, interoperable format standards for JPEG files.
Don't use an incompatible file format!
(In any case, our decoder will remain capable of reading existing JPEG
image files indefinitely.)
TO DO
=====
Please send bug reports, offers of help, etc. to jpeg-info@uc.ag.

333
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@ -0,0 +1,333 @@
*******************************************************************************
** Background
*******************************************************************************
libjpeg-turbo is a derivative of libjpeg which uses SIMD instructions (MMX,
SSE2, etc.) to accelerate baseline JPEG compression and decompression on x86
and x86-64 systems. On such systems, libjpeg-turbo is generally 2-4x as fast
as the unmodified version of libjpeg, all else being equal.
libjpeg-turbo was originally based on libjpeg/SIMD by Miyasaka Masaru, but
the TigerVNC and VirtualGL projects made numerous enhancements to the codec in
2009, including improved support for Mac OS X, 64-bit support, support for
32-bit and big endian pixel formats (RGBX, XBGR, etc.), accelerated Huffman
encoding/decoding, and various bug fixes. The goal was to produce a fully open
source codec that could replace the partially closed source TurboJPEG/IPP codec
used by VirtualGL and TurboVNC. libjpeg-turbo generally performs in the range
of 80-120% of TurboJPEG/IPP. It is faster in some areas but slower in others.
In early 2010, libjpeg-turbo spun off into its own independent project, with
the goal of making high-speed JPEG compression/decompression technology
available to a broader range of users and developers. The libjpeg-turbo shared
libraries can be used as drop-in replacements for libjpeg on most systems.
*******************************************************************************
** License
*******************************************************************************
libjpeg-turbo is licensed under a non-restrictive, BSD-style license
(see README.) The TurboJPEG/OSS wrapper (both C and Java versions) and
associated test programs bear a similar license, which is reproduced below:
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.
*******************************************************************************
** Using libjpeg-turbo
*******************************************************************************
libjpeg-turbo includes two APIs which can be used to compress and decompress
JPEG images:
TurboJPEG/OSS: This API wraps libjpeg-turbo and provides an easy-to-use
interface for compressing and decompressing JPEG images in memory. It also
provides some features that would not be straightforward to implement 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 TurboJPEG/OSS.
libjpeg API: This is the industry standard API for compressing and
decompressing JPEG images. It is more difficult to use than TurboJPEG/OSS
but also more powerful. 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.)
=============================
Replacing libjpeg at Run Time
=============================
If a Unix application is dynamically linked with libjpeg, then you can replace
libjpeg with libjpeg-turbo at run time by manipulating LD_LIBRARY_PATH.
For instance:
[Using libjpeg]
> time cjpeg <vgl_5674_0098.ppm >vgl_5674_0098.jpg
real 0m0.392s
user 0m0.074s
sys 0m0.020s
[Using libjpeg-turbo]
> export LD_LIBRARY_PATH=/opt/libjpeg-turbo/{lib}:$LD_LIBRARY_PATH
> time cjpeg <vgl_5674_0098.ppm >vgl_5674_0098.jpg
real 0m0.109s
user 0m0.029s
sys 0m0.010s
NOTE: {lib} can be lib, lib32, lib64, or lib/64, depending on the O/S and
architecture.
System administrators can also replace the libjpeg sym links in /usr/{lib} with
links to the libjpeg dynamic library located in /opt/libjpeg-turbo/{lib}. This
will effectively accelerate every dynamically linked libjpeg application on the
system.
The libjpeg-turbo SDK for Visual C++ installs the libjpeg-turbo DLL
(jpeg62.dll, jpeg7.dll, or jpeg8.dll, depending on whether libjpeg v6b, v7, or
v8 emulation is enabled) into c:\libjpeg-turbo[64]\bin, and the PATH
environment variable can be modified such that this directory is searched
before any others that might contain a libjpeg DLL. However, if a libjpeg
DLL exists in an application's install directory, then Windows will load this
DLL first whenever the application is launched. Thus, if an application ships
with jpeg62.dll, jpeg7.dll, or jpeg8.dll, then back up the application's
version of this DLL and copy c:\libjpeg-turbo[64]\bin\jpeg*.dll into the
application's install directory to accelerate it.
The version of the libjpeg-turbo DLL distributed in the libjpeg-turbo SDK for
Visual C++ requires the Visual C++ 2008 C run time DLL (msvcr90.dll).
msvcr90.dll ships with more recent versions of Windows, but users of older
Windows releases can obtain it from the Visual C++ 2008 Redistributable
Package, which is available as a free download from Microsoft's web site.
NOTE: Features of libjpeg which require passing a C run time structure, such
as a file handle, from an application to libjpeg will probably not work with
the version of the libjpeg-turbo DLL distributed in the libjpeg-turbo SDK for
Visual C++, unless the application is also built to use the Visual C++ 2008 C
run time DLL. In particular, this affects jpeg_stdio_dest() and
jpeg_stdio_src().
Mac applications typically embed their own copies of the libjpeg dylib inside
the (hidden) application bundle, so it is not possible to globally replace
libjpeg on OS X systems. If an application uses a shared library version of
libjpeg, then it may be possible to replace the application's version of it.
This would generally involve copying libjpeg.*.dylib from libjpeg-turbo into
the appropriate place in the application bundle and using install_name_tool to
repoint the dylib to the new directory. This requires an advanced knowledge of
OS X and would not survive an upgrade or a re-install of the application.
Thus, it is not recommended for most users.
=======================
Replacing TurboJPEG/IPP
=======================
libjpeg-turbo is a drop-in replacement for the TurboJPEG/IPP SDK used by
VirtualGL 2.1.x and TurboVNC 0.6 (and prior.) libjpeg-turbo contains a wrapper
library (TurboJPEG/OSS) that emulates the TurboJPEG API using libjpeg-turbo
instead of the closed source Intel Performance Primitives. You can replace the
TurboJPEG/IPP package on Linux systems with the libjpeg-turbo package in order
to make existing releases of VirtualGL 2.1.x and TurboVNC 0.x use the new codec
at run time. Note that the 64-bit libjpeg-turbo packages contain only 64-bit
binaries, whereas the TurboJPEG/IPP 64-bit packages contained both 64-bit and
32-bit binaries. Thus, to replace a TurboJPEG/IPP 64-bit package, install
both the 64-bit and 32-bit versions of libjpeg-turbo.
You can also build the VirtualGL 2.1.x and TurboVNC 0.6 source code with
the libjpeg-turbo SDK instead of TurboJPEG/IPP. It should work identically.
libjpeg-turbo also includes static library versions of TurboJPEG/OSS, which
are used to build TurboVNC 1.0 and later.
========================================
Using libjpeg-turbo in Your Own Programs
========================================
For the most part, libjpeg-turbo should work identically to libjpeg, so in
most cases, an application can be built against libjpeg and then run against
libjpeg-turbo. On Unix systems (including Cygwin), you can build against
libjpeg-turbo instead of libjpeg by setting
CPATH=/opt/libjpeg-turbo/include
and
LIBRARY_PATH=/opt/libjpeg-turbo/{lib}
({lib} = lib32 or lib64, depending on whether you are building a 32-bit or a
64-bit application.)
If using MinGW, then set
CPATH=/c/libjpeg-turbo-gcc[64]/include
and
LIBRARY_PATH=/c/libjpeg-turbo-gcc[64]/lib
Building against libjpeg-turbo is useful, for instance, if you want to build an
application that leverages the libjpeg-turbo colorspace extensions (see below.)
On Linux and Solaris systems, you would still need to manipulate
LD_LIBRARY_PATH or create appropriate sym links to use libjpeg-turbo at run
time. On such systems, you can pass -R /opt/libjpeg-turbo/{lib} to the linker
to force the use of libjpeg-turbo at run time rather than libjpeg (also useful
if you want to leverage the colorspace extensions), or you can link against the
libjpeg-turbo static library.
To force a Linux, Solaris, or MinGW application to link against the static
version of libjpeg-turbo, you can use the following linker options:
-Wl,-Bstatic -ljpeg -Wl,-Bdynamic
On OS X, simply add /opt/libjpeg-turbo/lib/libjpeg.a to the linker command
line (this also works on Linux and Solaris.)
To build Visual C++ applications using libjpeg-turbo, add
c:\libjpeg-turbo[64]\include to the system or user INCLUDE environment
variable and c:\libjpeg-turbo[64]\lib to the system or user LIB environment
variable, and then link against either jpeg.lib (to use the DLL version of
libjpeg-turbo) or jpeg-static.lib (to use the static version of libjpeg-turbo.)
=====================
Colorspace Extensions
=====================
libjpeg-turbo includes extensions which allow JPEG images to be compressed
directly from (and decompressed directly to) buffers which use BGR, BGRX,
RGBX, XBGR, and XRGB pixel ordering. This is implemented with six 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 */
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 YUV conversion is performed.
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 version of libjpeg
that doesn't support them will result in a "Bogus input colorspace" error.
=================================
libjpeg v7 and v8 API/ABI support
=================================
libjpeg v7 and v8 added new features to the API/ABI, and, unfortunately, the
compression and decompression structures were extended in a backward-
incompatible manner to accommodate these features. Thus, programs which are
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 still not
as widely used as v6b, enough programs (including a few Linux distros) have
made the switch that it was desirable to provide support for the libjpeg v7/v8
API/ABI in libjpeg-turbo.
Some of the libjpeg v7 and v8 features -- DCT scaling, to name one -- involve
deep modifications to the code which cannot be accommodated by libjpeg-turbo
without either breaking compatibility with libjpeg v6b or producing an
unsupportable mess. In order to fully support libjpeg v8 with all of its
features, we would have to essentially port the SIMD extensions to the libjpeg
v8 code base and maintain two separate code trees. We are hesitant to do this
until/unless the newer libjpeg code bases garner more community support and
involvement and until/unless we have some notion of whether future libjpeg
releases will also be backward-incompatible.
By passing an argument of --with-jpeg7 or --with-jpeg8 to configure, or an
argument of -DWITH_JPEG7=1 or -DWITH_JPEG8=1 to cmake, you can build a version
of libjpeg-turbo which emulates the libjpeg v7 or v8 API/ABI, so that programs
which 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.
libjpeg v7 and v8 Features:
---------------------------
Fully supported:
-- cjpeg: Separate quality settings for luminance and chrominance
Note that the libpjeg v7+ API was extended to accommodate this feature only
for convenience purposes. It has always been possible to implement this
feature with libjpeg v6b (see rdswitch.c for an example.)
-- cjpeg: 32-bit BMP support
-- jpegtran: lossless cropping
-- jpegtran: -perfect option
-- rdjpgcom: -raw option
-- rdjpgcom: locale awareness
Fully supported when using libjpeg v7/v8 emulation:
-- libjpeg: In-memory source and destination managers
Not supported:
-- libjpeg: DCT scaling in compressor
cinfo.scale_num and cinfo.scale_denom are silently ignored.
-- libjpeg: IDCT scaling extensions in decompressor
libjpeg-turbo still supports IDCT scaling with scaling factors of 1/2, 1/4,
and 1/8 (same as libjpeg v6b.)
-- libjpeg: Fancy downsampling in compressor
cinfo.do_fancy_downsampling is silently ignored.
-- jpegtran: Scaling
Seems to depend on the DCT scaling feature, which isn't supported.
*******************************************************************************
** Performance pitfalls
*******************************************************************************
===============
Restart Markers
===============
The optimized Huffman decoder in libjpeg-turbo does not handle restart markers
in a way that makes libjpeg 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 much greater than that of libjpeg v6b. Many
consumer packages, such as PhotoShop, use restart markers when generating JPEG
images, so images generated by those programs will experience this issue.
===============================================
Fast Integer Forward DCT at High Quality Levels
===============================================
The algorithm used by the SIMD-accelerated quantization function cannot produce
correct results whenever the fast integer forward DCT is used along with a JPEG
quality of 98-100. Thus, libjpeg-turbo must use the non-SIMD quantization
function in those cases. This causes performance to drop by as much as 40%.
It is therefore strongly advised that you use the slow integer forward DCT
whenever encoding images with a JPEG quality of 98 or higher.

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

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/* config.h. Generated from config.h.in by configure. */
/* config.h.in. Generated from configure.ac by autoheader. */
/* Build number */
#define BUILD "20110829"
/* Support arithmetic encoding */
#define C_ARITH_CODING_SUPPORTED 1
/* Support arithmetic decoding */
#define D_ARITH_CODING_SUPPORTED 1
/* Define to 1 if you have the <dlfcn.h> header file. */
#define HAVE_DLFCN_H 1
/* Define to 1 if you have the <inttypes.h> header file. */
#define HAVE_INTTYPES_H 1
/* Define to 1 if you have the <jni.h> header file. */
/* #undef HAVE_JNI_H */
/* Define to 1 if you have the `memcpy' function. */
#define HAVE_MEMCPY 1
/* Define to 1 if you have the <memory.h> header file. */
#define HAVE_MEMORY_H 1
/* Define to 1 if you have the `memset' function. */
#define HAVE_MEMSET 1
/* Define if your compiler supports prototypes */
#define HAVE_PROTOTYPES 1
/* Define to 1 if you have the <stddef.h> header file. */
#define HAVE_STDDEF_H 1
/* Define to 1 if you have the <stdint.h> header file. */
#define HAVE_STDINT_H 1
/* Define to 1 if you have the <stdlib.h> header file. */
#define HAVE_STDLIB_H 1
/* Define to 1 if you have the <strings.h> header file. */
#define HAVE_STRINGS_H 1
/* Define to 1 if you have the <string.h> header file. */
#define HAVE_STRING_H 1
/* Define to 1 if you have the <sys/stat.h> header file. */
#define HAVE_SYS_STAT_H 1
/* Define to 1 if you have the <sys/types.h> header file. */
#define HAVE_SYS_TYPES_H 1
/* Define to 1 if you have the <unistd.h> header file. */
#define HAVE_UNISTD_H 1
/* Define to 1 if the system has the type `unsigned char'. */
#define HAVE_UNSIGNED_CHAR 1
/* Define to 1 if the system has the type `unsigned short'. */
#define HAVE_UNSIGNED_SHORT 1
/* Compiler does not support pointers to undefined structures. */
/* #undef INCOMPLETE_TYPES_BROKEN */
/* libjpeg API version */
#define JPEG_LIB_VERSION 62
/* Define to the sub-directory in which libtool stores uninstalled libraries.
*/
#define LT_OBJDIR ".libs/"
/* Define if you have BSD-like bzero and bcopy */
/* #undef NEED_BSD_STRINGS */
/* Define if you need short function names */
/* #undef NEED_SHORT_EXTERNAL_NAMES */
/* Define if you have sys/types.h */
#define NEED_SYS_TYPES_H 1
/* Name of package */
#define PACKAGE "libjpeg-turbo"
/* Define to the address where bug reports for this package should be sent. */
#define PACKAGE_BUGREPORT ""
/* Define to the full name of this package. */
#define PACKAGE_NAME "libjpeg-turbo"
/* Define to the full name and version of this package. */
#define PACKAGE_STRING "libjpeg-turbo 1.1.90"
/* Define to the one symbol short name of this package. */
#define PACKAGE_TARNAME "libjpeg-turbo"
/* Define to the home page for this package. */
#define PACKAGE_URL ""
/* Define to the version of this package. */
#define PACKAGE_VERSION "1.1.90"
/* Define if shift is unsigned */
/* #undef RIGHT_SHIFT_IS_UNSIGNED */
/* Define to 1 if you have the ANSI C header files. */
#define STDC_HEADERS 1
/* Version number of package */
#define VERSION "1.1.90"
/* Use accelerated SIMD routines. */
#define WITH_SIMD 1
/* Define to 1 if type `char' is unsigned and you are not using gcc. */
#ifndef __CHAR_UNSIGNED__
/* # undef __CHAR_UNSIGNED__ */
#endif
/* Define to empty if `const' does not conform to ANSI C. */
/* #undef const */
/* Define to `__inline__' or `__inline' if that's what the C compiler
calls it, or to nothing if 'inline' is not supported under any name. */
#ifndef __cplusplus
/* #undef inline */
#endif
/* Define to `unsigned int' if <sys/types.h> does not define. */
/* #undef size_t */

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/* jconfig.h. Generated from jconfig.h.in by configure. */
/* Version ID for the JPEG library.
* Might be useful for tests like "#if JPEG_LIB_VERSION >= 60".
*/
#define JPEG_LIB_VERSION 62
/* Support arithmetic encoding */
#define C_ARITH_CODING_SUPPORTED 1
/* Support arithmetic decoding */
#define D_ARITH_CODING_SUPPORTED 1
/* Define if your compiler supports prototypes */
#define HAVE_PROTOTYPES 1
/* Define to 1 if you have the <stddef.h> header file. */
#define HAVE_STDDEF_H 1
/* Define to 1 if you have the <stdlib.h> header file. */
#define HAVE_STDLIB_H 1
/* Define to 1 if the system has the type `unsigned char'. */
#define HAVE_UNSIGNED_CHAR 1
/* Define to 1 if the system has the type `unsigned short'. */
#define HAVE_UNSIGNED_SHORT 1
/* Define if you want use complete types */
/* #undef INCOMPLETE_TYPES_BROKEN */
/* Define if you have BSD-like bzero and bcopy */
/* #undef NEED_BSD_STRINGS */
/* Define if you need short function names */
/* #undef NEED_SHORT_EXTERNAL_NAMES */
/* Define if you have sys/types.h */
#define NEED_SYS_TYPES_H 1
/* Define if shift is unsigned */
/* #undef RIGHT_SHIFT_IS_UNSIGNED */
/* Use accelerated SIMD routines. */
#define WITH_SIMD 1
/* Define to 1 if type `char' is unsigned and you are not using gcc. */
#ifndef __CHAR_UNSIGNED__
/* # undef __CHAR_UNSIGNED__ */
#endif
/* Define to empty if `const' does not conform to ANSI C. */
/* #undef const */
/* Define to `__inline__' or `__inline' if that's what the C compiler
calls it, or to nothing if 'inline' is not supported under any name. */
#ifndef __cplusplus
/* #undef inline */
#endif
/* Define to `unsigned int' if <sys/types.h> does not define. */
/* #undef size_t */

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jni/jpeg-turbo/asm/armv7/jdidct-armv7.S Normal file
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/*=========================================================================
* jdidct-armv7.s
*
* Copyright (c) 2010, Code Aurora Forum. 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 Code Aurora Forum, Inc. 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 "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER 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.
*==========================================================================
*==========================================================================
* FUNCTION LIST
*--------------------------------------------------------------------------
* - idct_1x1_venum
* - idct_2x2_venum
* - idct_4x4_venum
* - idct_8x8_venum
*
*==========================================================================
*/
@==========================================================================
@ MACRO DEFINITION
@==========================================================================
.macro Transpose8x8
@==================================================================
@ Transpose an 8 x 8 x 16 bit matrix in place
@ Input: q8 to q15
@ Output: q8 to q15
@ Registers used: q8 to q15
@ Assumptions: 8 x 8 x 16 bit data
@==================================================================
vswp d17, d24 @q8, q12
vswp d23, d30 @q11, q15
vswp d21, d28 @q10, q14
vswp d19, d26 @q9, q13
vtrn.32 q8, q10
vtrn.32 q9, q11
vtrn.32 q12, q14
vtrn.32 q13, q15
vtrn.16 q8, q9
vtrn.16 q10, q11
vtrn.16 q12, q13
vtrn.16 q14, q15
.endm
.macro IDCT1D
@==================================================================
@ One dimensional 64 element inverse DCT
@ Input: q8 to q15 loaded with data
@ q0 loaded with constants
@ Output: q8 to q15
@ Registers used: q0, q4 to q15
@ Assumptions: 16 bit data, first elements in least significant
@ halfwords
@==================================================================
@1st stage
vqrdmulh.s16 q4, q15, d0[2] @q4 = a1*vx7
vqrdmulh.s16 q5, q9, d0[2] @q5 = a1*vx1
vqrdmulh.s16 q6, q13, d0[3] @q6 = a2*vx5
vqrdmulh.s16 q7, q11, d1[1] @q7 = ma2*vx3
vqrdmulh.s16 q2, q14, d0[1] @q6 = a0*vx6
vqrdmulh.s16 q3, q10, d0[1] @q7 = a0*vx2
vqadd.s16 q9, q4, q9 @q9 = t1 = a1*vx7 + vx1
vqsub.s16 q5, q5, q15 @q5 = t8 = a1*vx1 - vx7
vqadd.s16 q15, q6, q11 @q15 = t7 = a2*vx5 + vx3
vqadd.s16 q11, q7, q13 @q11 = t3 = ma2*vx3 + vx5
@2nd stage
vqadd.s16 q13, q8, q12 @q13 = t5 = vx0 + vx4
vqsub.s16 q8, q8, q12 @q8 = t0 = vx0 - vx4
vqadd.s16 q10, q2, q10 @q10 = t2 = a0*vx6 + vx2
vqsub.s16 q12, q3, q14 @q12 = t4 = a0*vx2 - vx6
vqadd.s16 q14, q5, q11 @q14 = t6 = t8 + t3
vqsub.s16 q11, q5, q11 @q11 = t3 = t8 - t3
vqsub.s16 q5, q9, q15 @q5 = t8 = t1 - t7
vqadd.s16 q9, q9, q15 @q9 = t1 = t1 + t7
@3rd stage
vqadd.s16 q15, q13, q10 @q15 = t7 = t5 + t2
vqsub.s16 q10, q13, q10 @q10 = t2 = t5 - t2
vqadd.s16 q13, q8, q12 @q13 = t5 = t0 + t4
vqsub.s16 q7, q8, q12 @q7 = t0 = t0 - t4
vqsub.s16 q12, q5, q11 @q12 = t4 = t8 - t3
vqadd.s16 q11, q5, q11 @q11 = t3 = t8 + t3
@4th stage
vqadd.s16 q8, q15, q9 @q8 = vy0 = t7 + t1
vqsub.s16 q15, q15, q9 @q15 = vy7 = t7 - t1
vqrdmulh.s16 q6, q12, d0[0] @q6 = c4*t4
vqrdmulh.s16 q4, q11, d0[0] @q4 = c4*t3
vqsub.s16 q12, q10, q14 @q12 = vy4 = t2 - t6
vqadd.s16 q11, q10, q14 @q11 = vy3 = t2 + t6
vqadd.s16 q10, q7, q6 @q10 = vy2 = t0 + c4*t4
vqsub.s16 q14, q13, q4 @q14 = vy6 = t5 - c4*t3
vqadd.s16 q9, q13, q4 @q9 = vy1 = t5 + c4*t3
vqsub.s16 q13, q7, q6 @q13 = vy5 = t0 - c4*t4
.endm
.macro PART1
@==================================================================
@ Load input input data from memory and shift
@==================================================================
vld1.16 {d16, d17},[r0]! @q8 =row0
vqshl.s16 q8, q8, #4 @Input data too big?!!
@Maximum MPEG input is 2047/-2048.
vld1.16 {d18, d19},[r0]! @q9 =row1
vqshl.s16 q9, q9, #4 @Shift 1 instead of 4
vld1.16 {d20, d21},[r0]! @q10=row2
vqshl.s16 q10, q10, #4
vld1.16 {d22, d23},[r0]! @q11=row3
vqshl.s16 q11, q11, #4
vld1.16 {d24, d25},[r0]! @q12=row4
vqshl.s16 q12, q12, #4
vld1.16 {d26, d27},[r0]! @q13=row5
vqshl.s16 q13, q13, #4
vld1.16 {d28, d29},[r0]! @q14=row6
vqshl.s16 q14, q14, #4
vld1.16 {d30, d31},[r0]! @q15=row7
vqshl.s16 q15, q15, #4
@==================================================================
@ refresh the constants that was clobbered last time through IDCT1D
@==================================================================
vld1.16 {d4, d5},[r7] @q2 =constants[2]
vld1.16 {d6, d7},[r8] @q3 =constants[3]
vld1.16 {d8, d9},[r9] @q4 =constants[4]
.endm
.macro PART2
@==================================================================
@ Prescale the input
@==================================================================
vqrdmulh.s16 q12, q12, q1 @q12=row4 * constants[1] = vx4
vqrdmulh.s16 q15, q15, q2 @q15=row7 * constants[2] = vx7
vqrdmulh.s16 q9, q9, q2 @q9 =row1 * constants[2] = vx1
vqrdmulh.s16 q13, q13, q4 @q13=row5 * constants[4] = vx5
vqrdmulh.s16 q11, q11, q4 @q11=row3 * constants[4] = vx3
vqrdmulh.s16 q14, q14, q3 @q14=row6 * constants[3] = vx6
vqrdmulh.s16 q10, q10, q3 @q10=row2 * constants[3] = vx2
vqrdmulh.s16 q8, q8, q1 @q8 =row0 * constants[1] = vx0
@==================================================================
@ At thsi point, the input 8x8 x 16 bit coefficients are
@ transposed, prescaled, and loaded in q8 to q15
@ q0 loaded with scalar constants
@ Perform 1D IDCT
@==================================================================
IDCT1D @perform 1d idct
@==================================================================
@ Transpose the intermediate results to get read for vertical
@ transformation
@==================================================================
vswp d17, d24 @q8, q12
vswp d23, d30 @q11, q15
vswp d21, d28 @q10, q14
vswp d19, d26 @q9, q13
@==================================================================
@ Load the bias
@==================================================================
vdup.32 q4, d1[1] @a cycle is saved by loading
@the bias at this point
@==================================================================
@ Finish the transposition
@==================================================================
vtrn.32 q8, q10
vtrn.32 q9, q11
vtrn.32 q12, q14
vtrn.32 q13, q15
vtrn.16 q8, q9
vtrn.16 q10, q11
vtrn.16 q12, q13
vtrn.16 q14, q15
@==================================================================
@ Add bias
@==================================================================
vqadd.s16 q8, q8, q4
@==================================================================
@ IDCT 2nd half
@==================================================================
IDCT1D @perform 1d dct
@==================================================================
@ Scale and clamp the output to correct range and save to memory
@ 1. scale to 8bits by right shift 6
@ 2. clamp output to [0, 255] by min/max
@ 3. use multiple store. Each store will save one row of output.
@ The st queue size is 4, so do no more than 4 str in sequence.
@==================================================================
ldr r5, =constants+5*16 @constants[5],
vld1.16 d10, [r5] @load clamping parameters
vdup.s16 q6, d10[0] @q6=[0000000000000000]
vdup.s16 q7, d10[1] @q7=[FFFFFFFFFFFFFFFF]
@Save the results
vshr.s16 q8, q8, #6 @q8 = vy0
vmax.s16 q8, q8, q6 @clamp >0
vmin.s16 q8, q8, q7 @clamp <255
vshr.s16 q9, q9, #6 @q9 = vy1
vmax.s16 q9, q9, q6 @clamp >0
vmin.s16 q9, q9, q7 @clamp <255
vshr.s16 q10, q10, #6 @q10 = vy2
vmax.s16 q10, q10, q6 @clamp >0
vmin.s16 q10, q10, q7 @clamp <255
vshr.s16 q11, q11, #6 @q11 = vy3
vmax.s16 q11, q11, q6 @clamp >0
vmin.s16 q11, q11, q7 @clamp <255
vst1.16 {d16, d17},[r1],r2 @q8 =row0
vst1.16 {d18, d19},[r1],r2 @q9 =row1
vst1.16 {d20, d21},[r1],r2 @q10=row2
vst1.16 {d22, d23},[r1],r2 @q11=row3
vshr.s16 q12, q12, #6 @q12 = vy4
vmax.s16 q12, q12, q6 @clamp >0
vmin.s16 q12, q12, q7 @clamp <255
vshr.s16 q13, q13, #6 @q13 = vy5
vmax.s16 q13, q13, q6 @clamp >0
vmin.s16 q13, q13, q7 @clamp <255
vshr.s16 q14, q14, #6 @q14 = vy6
vmax.s16 q14, q14, q6 @clamp >0
vmin.s16 q14, q14, q7 @clamp <255
vshr.s16 q15, q15, #6 @q15 = vy7
vmax.s16 q15, q15, q6 @clamp >0
vmin.s16 q15, q15, q7 @clamp <255
vst1.16 {d24, d25},[r1],r2 @q12=row4
vst1.16 {d26, d27},[r1],r2 @q13=row5
vst1.16 {d28, d29},[r1],r2 @q14=row6
vst1.16 {d30, d31},[r1] @q15=row7
.endm
.macro BIG_BODY_TRANSPOSE_INPUT
@==================================================================
@ Main body of idct
@==================================================================
PART1
Transpose8x8
PART2
.endm
.macro IDCT_ENTRY
@==================================================================
@ Load the locations of the constants
@==================================================================
ldr r5, =constants+0*16 @constants[0]
ldr r6, =constants+1*16 @constants[1]
ldr r7, =constants+2*16 @constants[2]
ldr r8, =constants+3*16 @constants[3]
ldr r9, =constants+4*16 @constants[4]
@==================================================================
@ Load the coefficients
@ only some input coefficients are load due to register constrain
@==================================================================
vld1.16 {d0, d1},[r5] @q0 =constants[0] (scalars)
vld1.16 {d2, d3},[r6] @q1 =constants[1]
.endm
@==========================================================================
@ END of MACRO DEFINITION
@==========================================================================
.section idct_func, "x" @ ARE
.text @ idct_func, CODE, READONLY
.align 2
.code 32 @ CODE32
@==========================================================================
@ Main Routine
@==========================================================================
.global idct_1x1_venum
.global idct_2x2_venum
.global idct_4x4_venum
.global idct_8x8_venum
@==========================================================================
@ FUNCTION : idct_1x1_venum
@--------------------------------------------------------------------------
@ DISCRIPTION : ARM optimization of one 1x1 block iDCT
@--------------------------------------------------------------------------
@ C PROTOTYPE : void idct_1x1_venum(int16 * input,
@ int16 * output,
@ int32 stride)
@--------------------------------------------------------------------------
@ REG INPUT : R0 pointer to input (int16)
@ R1 pointer to output (int16)
@ R2 block stride
@--------------------------------------------------------------------------
@ STACK ARG : None
@--------------------------------------------------------------------------
@ MEM INPUT : None
@--------------------------------------------------------------------------
@ REG OUTPUT : None
@--------------------------------------------------------------------------
@ MEM OUTPUT : None
@--------------------------------------------------------------------------
@ REG AFFECTED : R0 - R2
@--------------------------------------------------------------------------
@ STACK USAGE : none
@--------------------------------------------------------------------------
@ CYCLES : 17 cycles
@--------------------------------------------------------------------------
@ NOTES :
@ This idct_1x1_venum code was developed with ARM instruction set.
@
@ ARM REGISTER ALLOCATION
@ =========================================================================
@ r0 : pointer to input data
@ r1 : pointer to output area
@ r2 : stride in the output buffer
@==========================================================================
.type idct_1x1_venum, %function
idct_1x1_venum:
ldrsh r3, [r0] @ Load signed half word (int16)
ldr r2, =1028 @ 1028 = 4 + 128 << 3
@ 4 for rounding, 128 for offset
add r2, r3, r2
asrs r2, r2, #3 @ Divide by 8, and set status bit
movmi r2, #0 @ Clamp to be greater than 0
cmp r2, #255
movgt r2, #255 @ Clamp to be less than 255
str r2, [r1] @ Save output
bx lr @ Return to caller
@ end of idct_1x1_venum
@==========================================================================
@ FUNCTION : idct_2x2_venum
@--------------------------------------------------------------------------
@ DISCRIPTION : VeNum optimization of one 2x2 block iDCT
@--------------------------------------------------------------------------
@ C PROTOTYPE : void idct_2x2_venum(int16 * input,
@ int16 * output,
@ int32 stride)
@--------------------------------------------------------------------------
@ REG INPUT : R0 pointer to input (int16)
@ R1 pointer to output (int16)
@ R2 block stride
@--------------------------------------------------------------------------
@ STACK ARG : None
@--------------------------------------------------------------------------
@ MEM INPUT : None
@--------------------------------------------------------------------------
@ REG OUTPUT : None
@--------------------------------------------------------------------------
@ MEM OUTPUT : None
@--------------------------------------------------------------------------
@ REG AFFECTED : R0 - R2
@--------------------------------------------------------------------------
@ STACK USAGE : none
@--------------------------------------------------------------------------
@ CYCLES : 27 cycles
@--------------------------------------------------------------------------
@ NOTES : Output buffer must be an 8x8 16-bit buffer
@
@ ARM REGISTER ALLOCATION
@ ==========================================
@ r0 : pointer to input data
@ r1 : pointer to output area
@ r2 : stride in the output buffer
@ -------------------------------------------
@
@ VENUM REGISTER ALLOCATION
@ =================================================
@ q0 : output x0 - x4
@ q1 : not used
@ q2 : not used
@ q3 : not used
@ q4 : not used
@ q5 : not used
@ q6 : not used
@ q7 : not used
@ q8 : input y0 - y4
@ q9 : intermediate value
@ q10 : intermediate value
@ q11 : offset value
@ q12 : clamp value
@ q13 : not used
@ q14 : not used
@ q15 : not used
@==========================================================================
.type idct_2x2_venum, %function
idct_2x2_venum:
vld4.32 {d16, d17, d18, d19}, [r0]
@ d16: y0 | y1 | y2 | y3 (LSB | MSB)
vtrn.32 d16, d17 @ d16: y0 | y1 | X | X
@ d17: y2 | y3 | X | X
vqadd.s16 d18, d16, d17 @ d18: y0+y2 | y1+y3 | X | X q: saturated
vqsub.s16 d19, d16, d17 @ d19: y0-y2 | y1-y3 | X | X q: saturated
vtrn.16 d18, d19 @ d18: y0+y2 | y0-y2 | X | X
@ d19: y1+y3 | y1-y3 | X | X
vqadd.s16 d20, d18, d19 @ d20: (y0+y2)+(y1+y3) | (y0-y2)+(y1-y3)
@ x0 | x2 | X | X
vqsub.s16 d21, d18, d19 @ d21: (y0+y2)-(y1+y3) | (y0-y2)-(y1-y3)
@ x1 | x3 | X | X
vtrn.16 d20, d21 @ d20: x0 | x1 | X | X
@ d21: x2 | x3 | X | X
vrshr.s16 q10, q10, #3 @ Divide by 8
vmov.i16 q11, #128 @ q11 = 128|128|128|128|128|128|128|128
vqadd.s16 q0, q10, q11 @ Add offset to make output in [0,255]
vmov.i16 q12, #0 @ q12 = [0000000000000000]
vmov.i16 q13, #255 @ q13 = [FFFFFFFFFFFFFFFF] (hex)
vmax.s16 q0, q0, q12 @ Clamp > 0
vmin.s16 q0, q0, q13 @ Clamp < 255
vstr d0, [r1] @ Store x0 | x1 | X | X
@ Potential out of boundary issue
add r1, r1, r2 @ Add the offset to the output pointer
vstr d1, [r1] @ Store x2 | x3 | X | X
@ Potential out of boundary issue
bx lr @ Return to caller
@ end of idct_2x2_venum
@==========================================================================
@ FUNCTION : idct_4x4_venum
@--------------------------------------------------------------------------
@ DISCRIPTION : VeNum optimization of one 4x4 block iDCT
@--------------------------------------------------------------------------
@ C PROTOTYPE : void idct_4x4_venum(int16 * input,
@ int16 * output,
@ int32 stride)
@--------------------------------------------------------------------------
@ REG INPUT : R0 pointer to input (int16)
@ R1 pointer to output (int16)
@ R2 block stride
@--------------------------------------------------------------------------
@ STACK ARG : None
@--------------------------------------------------------------------------
@ MEM INPUT : None
@--------------------------------------------------------------------------
@ REG OUTPUT : None
@--------------------------------------------------------------------------
@ MEM OUTPUT : None
@--------------------------------------------------------------------------
@ REG AFFECTED : R0 - R3, R12
@--------------------------------------------------------------------------
@ STACK USAGE : none
@--------------------------------------------------------------------------
@ CYCLES : 56 cycles
@--------------------------------------------------------------------------
@ NOTES :
@
@ ARM REGISTER ALLOCATION
@ ==========================================
@ r0 : pointer to input data
@ r1 : pointer to output area
@ r2 : stride in the output buffer
@ r3 : pointer to the coefficient set
@ r12 : pointer to the coefficient set
@ -------------------------------------------
@
@ VENUM REGISTER ALLOCATION
@ =================================================
@ q0 : coefficients[0]
@ q1 : coefficients[1]
@ q2 : coefficients[2]
@ q3 : coefficients[3]
@ q4 : not used
@ q5 : not used
@ q6 : not used
@ q7 : not used
@ q8 : input y0 - y7
@ q9 : input y8 - y15
@ q10 : intermediate value
@ q11 : intermediate value
@ q12 : intermediate value
@ q13 : intermediate value
@ q14 : intermediate value
@ q15 : intermediate value
@==========================================================================
.type idct_4x4_venum, %function
idct_4x4_venum:
@ Load the locations of the first 2 sets of coefficients
ldr r3, =coefficient+0*16 @ coefficient[0]
ldr r12, =coefficient+1*16 @ coefficient[1]
@ Load the first 2 sets of coefficients
vld1.16 {d0, d1},[r3] @ q0 = C4 | C2 | C4 | C6 | C4 | C2 | C4 | C6
vld1.16 {d2, d3},[r12] @ q1 = C4 | C6 | C4 | C2 | C4 | C6 | C4 | C2
@ Load the locations of the second 2 sets of coefficients
ldr r3, =coefficient+2*16 @ coefficient[2]
ldr r12, =coefficient+3*16 @ coefficient[3]
@ Load the second 2 sets of coefficients
vld1.16 {d4, d5},[r3] @ q2 = C4 | C4 | C4 | C4 | C2 | C2 | C2 | C2
vld1.16 {d6, d7},[r12] @ q3 = C4 | C4 | C4 | C4 | C6 | C6 | C6 | C6
@ Load the input values
vld1.16 {d16}, [r0], r2 @ d16: y0 | y1 | y2 | y3 (LSB | MSB)
vld1.16 {d17}, [r0], r2 @ d17: y4 | y5 | y6 | y7 (LSB | MSB)
vld1.16 {d18}, [r0], r2 @ d18: y8 | y9 | y10 | y11 (LSB | MSB)
vld1.16 {d19}, [r0], r2 @ d19: y12 | y13 | y14 | y15 (LSB | MSB)
@ Apply iDCT Horizonally
@ q8: y0 |y1 |y2 |y3 |y4 |y5 |y6 |y7
@ q9: y8 |y9 |y10|y11|y12|y13|y14|y15
@======================================================================
@ vqrdmulh doubles the result and save the high 16 bits of the result,
@ this is equivalent to right shift by 15 bits.
@ since coefficients are in Q15 format, it contradicts with the right
@ shift 15 here, so the final result is in Q0 format
@
@ vqrdmulh will also round the result
@======================================================================
vqrdmulh.s16 q10, q8, q0 @ q10: C4*y0 | C2*y1 | C4*y2 | C6*y3 | C4*y4 | C2*y5 | C4*y6 | C6*y7
vqrdmulh.s16 q11, q8, q1 @ q11: C4*y0 | C6*y1 | C4*y2 | C2*y3 | C4*y4 | C6*y5 | C4*y6 | C2*y7
vqrdmulh.s16 q12, q9, q0 @ q12: C4*y8 | C2*y9 | C4*y10 | C6*y11 | C4*y12 | C2*y13 | C4*y14 | C6*y15
vqrdmulh.s16 q13, q9, q1 @ q13: C4*y8 | C6*y9 | C4*y10 | C2*y11 | C4*y12 | C6*y13 | C4*y14 | C2*y15
vtrn.32 q10, q12 @ q10: C4*y0 | C2*y1 | C4*y8 | C2*y9 | C4*y4 | C2*y5 | C4*y12 | C2*y13
@ q12: C4*y2 | C6*y3 | C4*y10 | C6*y11 | C4*y6 | C6*y7 | C4*y14 | C6*y15
vtrn.32 q11, q13 @ q11: C4*y0 | C6*y1 | C4*y8 | C6*y9 | C4*y4 | C6*y5 | C4*y12 | C6*y13
@ q13: C4*y2 | C2*y3 | C4*y10 | C2*y11 | C4*y6 | C2*y7 | C4*y14 | C2*y15
vqadd.s16 q14, q10, q12 @ q14: C4*y0 + C4*y2 | C2*y1 + C6*y3 | C4*y8 + C4*y10 | C2*y9 + C6*y11 | C4*y4 + C4*y6 | C2*y5 + C6*y7 | C4*y12 + C4*y14 | C2*y13 + C6*y15
@ S0 | S2 | S8 | S10 | S4 | S6 | S12 | S14
vqsub.s16 q15, q11, q13 @ q15: C4*y0 - C4*y2 | C6*y1 - C2*y3 | C4*y8 - C4*y10 | C6*y9 - C2*y11 | C4*y4 - C4*y6 | C6*y5 - C2*y7 | C4*y12 - C4*y14 | C6*y13 - C2*y15
@ S1 | S3 | S9 | S11 | S5 | S7 | S13 | S15
vtrn.16 q14, q15 @ q14: S0 | S1 | S8 | S9 | S4 | S5 | S12 | S13
@ q15: S2 | S3 | S10 | S11 | S6 | S7 | S14 | S15
vqadd.s16 q8, q14, q15 @ q8: Z0 | Z1 | Z8 | Z9 | Z4 | Z5 | Z12 | Z13
vqsub.s16 q9, q14, q15 @ q9: Z3 | Z2 | Z11 | Z10 | Z7 | Z6 | Z15 | Z14
vrev32.16 q9, q9 @ q9: Z2 | Z3 | Z10 | Z11 | Z6 | Z7 | Z14 | Z15
@ Apply iDCT Vertically
vtrn.32 q8, q9 @ q8: Z0 | Z1 | Z2 | Z3 | Z4 | Z5 | Z6 | Z7
@ q9: Z8 | Z9 | Z10 | Z11 | Z12 | Z13 | Z14 | Z15
vqrdmulh.s16 q10, q8, q2 @ q10: C4*Z0 | C4*Z1 | C4*Z2 | C4*Z3 | C2*Z4 | C2*Z5 | C2*Z6 | C2*Z7
vqrdmulh.s16 q11, q8, q3 @ q11: C4*Z0 | C4*Z1 | C4*Z2 | C4*Z3 | C6*Z4 | C6*Z5 | C6*Z6 | C6*Z7
vqrdmulh.s16 q12, q9, q2 @ q12: C4*Z8 | C4*Z9 | C4*Z10 | C4*Z11 | C2*Z12 | C2*Z13 | C2*Z14 | C2*Z15
vqrdmulh.s16 q13, q9, q3 @ q13: C4*Z8 | C4*Z9 | C4*Z10 | C4*Z11 | C6*Z12 | C6*Z13 | C6*Z14 | C6*Z15
vqadd.s16 q14, q10, q13 @ q14: C4*Z0+C4*Z8 | C4*Z1+C4*Z9 | C4*Z2+C4*Z10 | C4*Z3+C4*Z11 | C2*Z4+C6*Z12 | C2*Z5+C6*Z13 | C2*Z6+C6*Z14 | C2*Z7+C6*Z15
@ s0 | s4 | s8 | s12 | s2 | s6 | s10 | s14
vqsub.s16 q15, q11, q12 @ q15: C4*Z0-C4*Z8 | C4*Z1-C4*Z9 | C4*Z2-C4*Z10 | C4*Z3-C4*Z11 | C6*Z4-C2*Z12 | C6*Z5-C2*Z13 | C6*Z6-C2*Z14 | C6*Z7-C2*Z15
@ s1 | s5 | s9 | s13 | s3 | s7 | s11 | s15
vswp d29, d30 @ q14: s0 | s4 | s8 | s12 | s1 | s5 | s9 | s13
@ q15: s2 | s6 | s10 | s14 | s3 | s7 | s11 | s15
vqadd.s16 q8, q14, q15 @ q8: x0 | x4 | x8 | x12 | x1 | x5 | x9 | x13
vqsub.s16 q9, q14, q15 @ q9: x3 | x7 | x11 | x15 | x2 | x6 | x10 | x14
vmov.i16 q10, #0 @ q10=[0000000000000000]
vmov.i16 q11, #255 @ q11=[FFFFFFFFFFFFFFFF] (hex)
vmov.i16 q0, #128 @ q0 = 128|128|128|128|128|128|128|128
vqadd.s16 q8, q8, q0 @ Add the offset
vqadd.s16 q9, q9, q0 @ Add the offset
vmax.s16 q8, q8, q10 @ clamp > 0
vmin.s16 q8, q8, q11 @ clamp < 255
vmax.s16 q9, q9, q10 @ clamp > 0
vmin.s16 q9, q9, q11 @ clamp < 255
vst1.16 {d16}, [r1], r2 @ d16: x0 | x1 | x2 | x3 (LSB | MSB)
vst1.16 {d17}, [r1], r2 @ d17: x4 | x5 | x6 | x7 (LSB | MSB)
vst1.16 {d19}, [r1], r2 @ d18: x8 | x9 | x10 | x11 (LSB | MSB)
vst1.16 {d18}, [r1], r2 @ d19: x12| x13 | x14 | x15 (LSB | MSB)
bx lr @ Return to caller
@ end of idct_4x4_venum
@==========================================================================
@ FUNCTION : idct_8x8_venum
@--------------------------------------------------------------------------
@ DISCRIPTION : VeNum optimization of one 8x8 block iDCT
@--------------------------------------------------------------------------
@ C PROTOTYPE : void idct_8x8_venum(int16 * input,
@ int16 * output,
@ int32 stride)
@--------------------------------------------------------------------------
@ REG INPUT : R0 pointer to input (int16)
@ R1 pointer to output (int16)
@ R2 block stride
@--------------------------------------------------------------------------
@ STACK ARG : None
@--------------------------------------------------------------------------
@ MEM INPUT : None
@--------------------------------------------------------------------------
@ REG OUTPUT : None
@--------------------------------------------------------------------------
@ MEM OUTPUT : None
@--------------------------------------------------------------------------
@ REG AFFECTED : R0 - R9
@--------------------------------------------------------------------------
@ STACK USAGE : none
@--------------------------------------------------------------------------
@ CYCLES : 177 cycles
@--------------------------------------------------------------------------
@ NOTES :
@
@ It was tested to be IEEE 1180 compliant. Since IEEE 1180 compliance is more stringent
@ than MPEG-4 compliance, this version is also MPEG-4 compliant.
@
@ CODE STRUCTURE:
@ (i) Macros for transposing an 8x8 matrix and for configuring the VFP unit are defined.
@ (ii) Macro for IDCT in one dimension is defined as four stages
@ (iii) The two dimensional code begins
@ (iv) constants are defined in the area DataArea
@
@ PROGRAM FLOW:
@
@ The VFP is configured
@ The parameters to IDCT are loaded
@ the coefficients are loaded
@ loop:
@ decrement loop counter
@ The first input Matrix is loaded and pre-scaled
@ The input is prescaled using the constants
@ IDCT is performed in one dimension on the 8 columns
@ The matrix is transposed
@ A bias is loaded an added to the matrix
@ IDCT is performed in one dimension on the 8 rows
@ The matrix is post-scaled
@ The matrix is saved
@ test loop counter and loop if greater than zero
@ stop
@
@
@ ARM REGISTER ALLOCATION
@ ==========================================
@ r0 : pointer to input data
@ r1 : pointer to output are
@ r2 : stride in the output buffer
@ r3 :
@ r4 :
@ r5 : pointer to constants[0] [5]
@ r6 : pointer to constants[1]
@ r7 : pointer to constants[2]
@ r8 : pointer to constants[3]
@ r9 : pointer to constants[4]
@ -------------------------------------------
@
@ VENUM REGISTER ALLOCATION
@ =================================================
@ q0 : constants[0]
@ q1 : constants[1]
@ q2 : constants[2], IDCT1D in-place scratch
@ q3 : constants[3], IDCT1D in-place scratch
@ q4 : constants[4], IDCT1D in-place scratch, and bias compensation
@ q5 : IDCT1D in-place scratch
@ q6 : IDCT1D in-place scratch
@ q7 : IDCT1D in-place scratch
@ q8 : Matrix[0] IDCT1D in-place scratch
@ q9 : Matrix[1] IDCT1D in-place scratch
@ q10 : Matrix[2] IDCT1D in-place scratch
@ q11 : Matrix[3] IDCT1D in-place scratch
@ q12 : Matrix[4] IDCT1D in-place scratch
@ q13 : Matrix[5] IDCT1D in-place scratch
@ q14 : Matrix[6] IDCT1D in-place scratch
@ q15 : Matrix[7] IDCT1D in-place scratch
@==========================================================================
.type idct_8x8_venum, %function
idct_8x8_venum:
push {r5-r9}
vpush {d8-d15}
IDCT_ENTRY
BIG_BODY_TRANSPOSE_INPUT
vpop {d8-d15}
pop {r5-r9}
bx lr
@ end of idct_8x8_venum
@==========================================================================
@ Constants Definition AREA: define idct kernel, bias
@==========================================================================
.section ro_data_area @ AREA RODataArea
.data @ DATA, READONLY
.align 5 @ ALIGN=5
constants:
.hword 23170, 13573, 6518, 21895, -23170, -21895, 8223, 8224
.hword 16384, 22725, 21407, 19266, 16384, 19266, 21407, 22725
.hword 22725, 31521, 29692, 26722, 22725, 26722, 29692, 31521
.hword 21407, 29692, 27969, 25172, 21407, 25172, 27969, 29692
.hword 19266, 26722, 25172, 22654, 19266, 22654, 25172, 26722
.hword 0, 255, 0, 0
coefficient: @ These are the coefficent used by 4x4 iDCT in Q15 format
.hword 11585, 15137, 11585, 6270, 11585, 15137, 11585, 6270 @ C4, C2, C4, C6, C4, C2, C4, C6 /2
.hword 11585, 6270, 11585, 15137, 11585, 6270, 11585, 15137 @ C4, C6, C4, C2, C4, C6, C4, C2 /2
.hword 11585, 11585, 11585, 11585, 15137, 15137, 15137, 15137 @ C4, C4, C4, C4, C2, C2, C2, C2 /2
.hword 11585, 11585, 11585, 11585, 6270, 6270, 6270, 6270 @ C4, C4, C4, C4, C6, C6, C6, C6 /2
.end

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@ -0,0 +1,270 @@
/*
* Copyright (C)2011 D. R. Commander. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* - Neither the name of the libjpeg-turbo Project nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS",
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdio.h>
#include <string.h>
#include <setjmp.h>
#include <errno.h>
#include "cdjpeg.h"
#include <jpeglib.h>
#include <jpegint.h>
#include "tjutil.h"
#include "bmp.h"
/* This duplicates the functionality of the VirtualGL bitmap library using
the components from cjpeg and djpeg */
/* Error handling (based on example in example.c) */
static char errStr[JMSG_LENGTH_MAX]="No error";
struct my_error_mgr
{
struct jpeg_error_mgr pub;
jmp_buf setjmp_buffer;
};
typedef struct my_error_mgr *my_error_ptr;
static void my_error_exit(j_common_ptr cinfo)
{
my_error_ptr myerr=(my_error_ptr)cinfo->err;
(*cinfo->err->output_message)(cinfo);
longjmp(myerr->setjmp_buffer, 1);
}
/* Based on output_message() in jerror.c */
static void my_output_message(j_common_ptr cinfo)
{
(*cinfo->err->format_message)(cinfo, errStr);
}
#define _throw(m) {snprintf(errStr, JMSG_LENGTH_MAX, "%s", m); \
retval=-1; goto bailout;}
#define _throwunix(m) {snprintf(errStr, JMSG_LENGTH_MAX, "%s\n%s", m, \
strerror(errno)); retval=-1; goto bailout;}
static void pixelconvert(unsigned char *srcbuf, int srcpf, int srcbottomup,
unsigned char *dstbuf, int dstpf, int dstbottomup, int w, int h)
{
unsigned char *srcptr=srcbuf, *srcptr2;
int srcps=tjPixelSize[srcpf];
int srcstride=srcbottomup? -w*srcps:w*srcps;
unsigned char *dstptr=dstbuf, *dstptr2;
int dstps=tjPixelSize[dstpf];
int dststride=dstbottomup? -w*dstps:w*dstps;
int row, col;
if(srcbottomup) srcptr=&srcbuf[w*srcps*(h-1)];
if(dstbottomup) dstptr=&dstbuf[w*dstps*(h-1)];
for(row=0; row<h; row++, srcptr+=srcstride, dstptr+=dststride)
{
for(col=0, srcptr2=srcptr, dstptr2=dstptr; col<w; col++, srcptr2+=srcps,
dstptr2+=dstps)
{
dstptr2[tjRedOffset[dstpf]]=srcptr2[tjRedOffset[srcpf]];
dstptr2[tjGreenOffset[dstpf]]=srcptr2[tjGreenOffset[srcpf]];
dstptr2[tjBlueOffset[dstpf]]=srcptr2[tjBlueOffset[srcpf]];
}
}
}
int loadbmp(char *filename, unsigned char **buf, int *w, int *h,
int dstpf, int bottomup)
{
int retval=0, dstps, srcpf, tempc;
struct jpeg_compress_struct cinfo;
struct my_error_mgr jerr;
cjpeg_source_ptr src;
FILE *file=NULL;
if(!filename || !buf || !w || !h || dstpf<0 || dstpf>=TJ_NUMPF)
_throw("loadbmp(): Invalid argument");
if((file=fopen(filename, "rb"))==NULL)
_throwunix("loadbmp(): Cannot open input file");
cinfo.err=jpeg_std_error(&jerr.pub);
jerr.pub.error_exit=my_error_exit;
jerr.pub.output_message=my_output_message;
if(setjmp(jerr.setjmp_buffer))
{
/* If we get here, the JPEG code has signaled an error. */
retval=-1; goto bailout;
}
jpeg_create_compress(&cinfo);
if((tempc=getc(file))<0 || ungetc(tempc, file)==EOF)
_throwunix("loadbmp(): Could not read input file")
else if(tempc==EOF) _throw("loadbmp(): Input file contains no data");
if(tempc=='B')
{
if((src=jinit_read_bmp(&cinfo))==NULL)
_throw("loadbmp(): Could not initialize bitmap loader");
}
else if(tempc=='P')
{
if((src=jinit_read_ppm(&cinfo))==NULL)
_throw("loadbmp(): Could not initialize bitmap loader");
}
else _throw("loadbmp(): Unsupported file type");
src->input_file=file;
(*src->start_input)(&cinfo, src);
(*cinfo.mem->realize_virt_arrays)((j_common_ptr)&cinfo);
*w=cinfo.image_width; *h=cinfo.image_height;
if(cinfo.input_components==1 && cinfo.in_color_space==JCS_RGB)
srcpf=TJPF_GRAY;
else srcpf=TJPF_RGB;
dstps=tjPixelSize[dstpf];
if((*buf=(unsigned char *)malloc((*w)*(*h)*dstps))==NULL)
_throw("loadbmp(): Memory allocation failure");
while(cinfo.next_scanline<cinfo.image_height)
{
int i, nlines=(*src->get_pixel_rows)(&cinfo, src);
for(i=0; i<nlines; i++)
{
unsigned char *outbuf; int row;
row=cinfo.next_scanline+i;
if(bottomup) outbuf=&(*buf)[((*h)-row-1)*(*w)*dstps];
else outbuf=&(*buf)[row*(*w)*dstps];
pixelconvert(src->buffer[i], srcpf, 0, outbuf, dstpf, bottomup, *w,
nlines);
}
cinfo.next_scanline+=nlines;
}
(*src->finish_input)(&cinfo, src);
bailout:
jpeg_destroy_compress(&cinfo);
if(file) fclose(file);
if(retval<0 && buf && *buf) {free(*buf); *buf=NULL;}
return retval;
}
int savebmp(char *filename, unsigned char *buf, int w, int h, int srcpf,
int bottomup)
{
int retval=0, srcps, dstpf;
struct jpeg_decompress_struct dinfo;
struct my_error_mgr jerr;
djpeg_dest_ptr dst;
FILE *file=NULL;
char *ptr=NULL;
if(!filename || !buf || w<1 || h<1 || srcpf<0 || srcpf>=TJ_NUMPF)
_throw("savebmp(): Invalid argument");
if((file=fopen(filename, "wb"))==NULL)
_throwunix("savebmp(): Cannot open output file");
dinfo.err=jpeg_std_error(&jerr.pub);
jerr.pub.error_exit=my_error_exit;
jerr.pub.output_message=my_output_message;
if(setjmp(jerr.setjmp_buffer))
{
/* If we get here, the JPEG code has signaled an error. */
retval=-1; goto bailout;
}
jpeg_create_decompress(&dinfo);
if(srcpf==TJPF_GRAY)
{
dinfo.out_color_components=dinfo.output_components=1;
dinfo.out_color_space=JCS_GRAYSCALE;
}
else
{
dinfo.out_color_components=dinfo.output_components=3;
dinfo.out_color_space=JCS_RGB;
}
dinfo.image_width=w; dinfo.image_height=h;
dinfo.global_state=DSTATE_READY;
dinfo.scale_num=dinfo.scale_denom=1;
ptr=strrchr(filename, '.');
if(ptr && !strcasecmp(ptr, ".bmp"))
{
if((dst=jinit_write_bmp(&dinfo, 0))==NULL)
_throw("savebmp(): Could not initialize bitmap writer");
}
else
{
if((dst=jinit_write_ppm(&dinfo))==NULL)
_throw("savebmp(): Could not initialize PPM writer");
}
dst->output_file=file;
(*dst->start_output)(&dinfo, dst);
(*dinfo.mem->realize_virt_arrays)((j_common_ptr)&dinfo);
if(srcpf==TJPF_GRAY) dstpf=srcpf;
else dstpf=TJPF_RGB;
srcps=tjPixelSize[srcpf];
while(dinfo.output_scanline<dinfo.output_height)
{
int i, nlines=dst->buffer_height;
for(i=0; i<nlines; i++)
{
unsigned char *inbuf; int row;
row=dinfo.output_scanline+i;
if(bottomup) inbuf=&buf[(h-row-1)*w*srcps];
else inbuf=&buf[row*w*srcps];
pixelconvert(inbuf, srcpf, bottomup, dst->buffer[i], dstpf, 0, w,
nlines);
}
(*dst->put_pixel_rows)(&dinfo, dst, nlines);
dinfo.output_scanline+=nlines;
}
(*dst->finish_output)(&dinfo, dst);
bailout:
jpeg_destroy_decompress(&dinfo);
if(file) fclose(file);
return retval;
}
const char *bmpgeterr(void)
{
return errStr;
}

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

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/*
* cderror.h
*
* Copyright (C) 1994-1997, Thomas G. Lane.
* Modified 2009 by Guido Vollbeding.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file defines the error and message codes for the cjpeg/djpeg
* applications. These strings are not needed as part of the JPEG library
* proper.
* Edit this file to add new codes, or to translate the message strings to
* some other language.
*/
/*
* To define the enum list of message codes, include this file without
* defining macro JMESSAGE. To create a message string table, include it
* again with a suitable JMESSAGE definition (see jerror.c for an example).
*/
#ifndef JMESSAGE
#ifndef CDERROR_H
#define CDERROR_H
/* First time through, define the enum list */
#define JMAKE_ENUM_LIST
#else
/* Repeated inclusions of this file are no-ops unless JMESSAGE is defined */
#define JMESSAGE(code,string)
#endif /* CDERROR_H */
#endif /* JMESSAGE */
#ifdef JMAKE_ENUM_LIST
typedef enum {
#define JMESSAGE(code,string) code ,
#endif /* JMAKE_ENUM_LIST */
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_BADHEADER, "Invalid BMP file: bad header length")
JMESSAGE(JERR_BMP_BADPLANES, "Invalid BMP file: biPlanes not equal to 1")
JMESSAGE(JERR_BMP_COLORSPACE, "BMP output must be grayscale or RGB")
JMESSAGE(JERR_BMP_COMPRESSED, "Sorry, compressed BMPs not yet supported")
JMESSAGE(JERR_BMP_EMPTY, "Empty BMP image")
JMESSAGE(JERR_BMP_NOT, "Not a BMP file - does not start with BM")
JMESSAGE(JTRC_BMP, "%ux%u 24-bit BMP image")
JMESSAGE(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_MAPPED, "%ux%u 8-bit colormapped OS2 BMP image")
#endif /* BMP_SUPPORTED */
#ifdef GIF_SUPPORTED
JMESSAGE(JERR_GIF_BUG, "GIF output got confused")
JMESSAGE(JERR_GIF_CODESIZE, "Bogus GIF codesize %d")
JMESSAGE(JERR_GIF_COLORSPACE, "GIF output must be grayscale or RGB")
JMESSAGE(JERR_GIF_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'")
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")
JMESSAGE(JWRN_GIF_CHAR, "Bogus char 0x%02x in GIF file, ignoring")
JMESSAGE(JWRN_GIF_ENDCODE, "Premature end of GIF image")
JMESSAGE(JWRN_GIF_NOMOREDATA, "Ran out of GIF bits")
#endif /* GIF_SUPPORTED */
#ifdef PPM_SUPPORTED
JMESSAGE(JERR_PPM_COLORSPACE, "PPM output must be grayscale or RGB")
JMESSAGE(JERR_PPM_NONNUMERIC, "Nonnumeric data in PPM file")
JMESSAGE(JERR_PPM_NOT, "Not a PPM/PGM file")
JMESSAGE(JTRC_PGM, "%ux%u PGM image")
JMESSAGE(JTRC_PGM_TEXT, "%ux%u text PGM image")
JMESSAGE(JTRC_PPM, "%ux%u PPM image")
JMESSAGE(JTRC_PPM_TEXT, "%ux%u text PPM image")
#endif /* PPM_SUPPORTED */
#ifdef RLE_SUPPORTED
JMESSAGE(JERR_RLE_BADERROR, "Bogus error code from RLE library")
JMESSAGE(JERR_RLE_COLORSPACE, "RLE output must be grayscale or RGB")
JMESSAGE(JERR_RLE_DIMENSIONS, "Image dimensions (%ux%u) too large for RLE")
JMESSAGE(JERR_RLE_EMPTY, "Empty RLE file")
JMESSAGE(JERR_RLE_EOF, "Premature EOF in RLE header")
JMESSAGE(JERR_RLE_MEM, "Insufficient memory for RLE header")
JMESSAGE(JERR_RLE_NOT, "Not an RLE file")
JMESSAGE(JERR_RLE_TOOMANYCHANNELS, "Cannot handle %d output channels for RLE")
JMESSAGE(JERR_RLE_UNSUPPORTED, "Cannot handle this RLE setup")
JMESSAGE(JTRC_RLE, "%ux%u full-color RLE file")
JMESSAGE(JTRC_RLE_FULLMAP, "%ux%u full-color RLE file with map of length %d")
JMESSAGE(JTRC_RLE_GRAY, "%ux%u grayscale RLE file")
JMESSAGE(JTRC_RLE_MAPGRAY, "%ux%u grayscale RLE file with map of length %d")
JMESSAGE(JTRC_RLE_MAPPED, "%ux%u colormapped RLE file with map of length %d")
#endif /* RLE_SUPPORTED */
#ifdef TARGA_SUPPORTED
JMESSAGE(JERR_TGA_BADCMAP, "Unsupported Targa colormap format")
JMESSAGE(JERR_TGA_BADPARMS, "Invalid or unsupported Targa file")
JMESSAGE(JERR_TGA_COLORSPACE, "Targa output must be grayscale or RGB")
JMESSAGE(JTRC_TGA, "%ux%u RGB Targa image")
JMESSAGE(JTRC_TGA_GRAY, "%ux%u grayscale Targa image")
JMESSAGE(JTRC_TGA_MAPPED, "%ux%u colormapped Targa image")
#else
JMESSAGE(JERR_TGA_NOTCOMP, "Targa support was not compiled")
#endif /* TARGA_SUPPORTED */
JMESSAGE(JERR_BAD_CMAP_FILE,
"Color map file is invalid or of unsupported format")
JMESSAGE(JERR_TOO_MANY_COLORS,
"Output file format cannot handle %d colormap entries")
JMESSAGE(JERR_UNGETC_FAILED, "ungetc failed")
#ifdef TARGA_SUPPORTED
JMESSAGE(JERR_UNKNOWN_FORMAT,
"Unrecognized input file format --- perhaps you need -targa")
#else
JMESSAGE(JERR_UNKNOWN_FORMAT, "Unrecognized input file format")
#endif
JMESSAGE(JERR_UNSUPPORTED_FORMAT, "Unsupported output file format")
#ifdef JMAKE_ENUM_LIST
JMSG_LASTADDONCODE
} ADDON_MESSAGE_CODE;
#undef JMAKE_ENUM_LIST
#endif /* JMAKE_ENUM_LIST */
/* Zap JMESSAGE macro so that future re-inclusions do nothing by default */
#undef JMESSAGE

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/*
* cdjpeg.c
*
* Copyright (C) 1991-1997, 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 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() */
#ifdef NEED_SIGNAL_CATCHER
#include <signal.h> /* to declare signal() */
#endif
#ifdef USE_SETMODE
#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() */
#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
/*
* Optional progress monitor: display a percent-done figure on stderr.
*/
#ifdef PROGRESS_REPORT
METHODDEF(void)
progress_monitor (j_common_ptr cinfo)
{
cd_progress_ptr prog = (cd_progress_ptr) cinfo->progress;
int total_passes = prog->pub.total_passes + prog->total_extra_passes;
int percent_done = (int) (prog->pub.pass_counter*100L/prog->pub.pass_limit);
if (percent_done != prog->percent_done) {
prog->percent_done = percent_done;
if (total_passes > 1) {
fprintf(stderr, "\rPass %d/%d: %3d%% ",
prog->pub.completed_passes + prog->completed_extra_passes + 1,
total_passes, percent_done);
} else {
fprintf(stderr, "\r %3d%% ", percent_done);
}
fflush(stderr);
}
}
GLOBAL(void)
start_progress_monitor (j_common_ptr cinfo, cd_progress_ptr progress)
{
/* Enable progress display, unless trace output is on */
if (cinfo->err->trace_level == 0) {
progress->pub.progress_monitor = progress_monitor;
progress->completed_extra_passes = 0;
progress->total_extra_passes = 0;
progress->percent_done = -1;
cinfo->progress = &progress->pub;
}
}
GLOBAL(void)
end_progress_monitor (j_common_ptr cinfo)
{
/* Clear away progress display */
if (cinfo->err->trace_level == 0) {
fprintf(stderr, "\r \r");
fflush(stderr);
}
}
#endif
/*
* Case-insensitive matching of possibly-abbreviated keyword switches.
* keyword is the constant keyword (must be lower case already),
* minchars is length of minimum legal abbreviation.
*/
GLOBAL(boolean)
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) */
ca = tolower(ca);
if (ca != ck)
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 */
}
/*
* Routines to establish binary I/O mode for stdin and stdout.
* Non-Unix systems often require some hacking to get out of text mode.
*/
GLOBAL(FILE *)
read_stdin (void)
{
FILE * input_file = stdin;
#ifdef USE_SETMODE /* need to hack file mode? */
setmode(fileno(stdin), O_BINARY);
#endif
#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);
}
#endif
return input_file;
}
GLOBAL(FILE *)
write_stdout (void)
{
FILE * output_file = stdout;
#ifdef USE_SETMODE /* need to hack file mode? */
setmode(fileno(stdout), O_BINARY);
#endif
#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);
}
#endif
return output_file;
}

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/*
* cdjpeg.h
*
* Copyright (C) 1994-1997, 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 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 */
#include "jinclude.h"
#include "jpeglib.h"
#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;
struct cjpeg_source_struct {
JMETHOD(void, start_input, (j_compress_ptr cinfo,
cjpeg_source_ptr sinfo));
JMETHOD(JDIMENSION, get_pixel_rows, (j_compress_ptr cinfo,
cjpeg_source_ptr sinfo));
JMETHOD(void, finish_input, (j_compress_ptr cinfo,
cjpeg_source_ptr sinfo));
FILE *input_file;
JSAMPARRAY buffer;
JDIMENSION buffer_height;
};
/*
* Object interface for djpeg's output file encoding modules
*/
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.
*/
JMETHOD(void, start_output, (j_decompress_ptr cinfo,
djpeg_dest_ptr dinfo));
/* Emit the specified number of pixel rows from the buffer. */
JMETHOD(void, put_pixel_rows, (j_decompress_ptr cinfo,
djpeg_dest_ptr dinfo,
JDIMENSION rows_supplied));
/* Finish up at the end of the image. */
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;
/* Output pixel-row buffer. Created by module init or start_output.
* Width is cinfo->output_width * cinfo->output_components;
* height is buffer_height.
*/
JSAMPARRAY buffer;
JDIMENSION buffer_height;
};
/*
* cjpeg/djpeg may need to perform extra passes to convert to or from
* the source/destination file format. The JPEG library does not know
* about these passes, but we'd like them to be counted by the progress
* monitor. We use an expanded progress monitor object to hold the
* additional pass count.
*/
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 */
/* last printed percentage stored here to avoid multiple printouts */
int percent_done;
};
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 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 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 JPP((j_decompress_ptr cinfo, FILE * infile));
/* common support routines (in cdjpeg.c) */
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"
#else
#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 */
#define EXIT_FAILURE 1
#endif
#ifndef EXIT_SUCCESS
#ifdef VMS
#define EXIT_SUCCESS 1 /* VMS is very nonstandard */
#else
#define EXIT_SUCCESS 0
#endif
#endif
#ifndef EXIT_WARNING
#ifdef VMS
#define EXIT_WARNING 1 /* VMS is very nonstandard */
#else
#define EXIT_WARNING 2
#endif
#endif

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CHANGE LOG for Independent JPEG Group's JPEG software
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.
Version 8a 28-Feb-2010
-----------------------
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.
Version 8 10-Jan-2010
----------------------
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).
Add data source and destination managers for read from and write to
memory buffers. New API functions jpeg_mem_src and jpeg_mem_dest.
Thank to Roberto Boni from Italy for the suggestion.
Version 7 27-Jun-2009
----------------------
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.
Support arithmetic entropy encoding and decoding.
Added files jaricom.c, jcarith.c, jdarith.c.
jpegtran has a new "lossless" cropping feature.
Implement -perfect option in jpegtran, new API function
jtransform_perfect_transform() in transupp. (DP 204_perfect.dpatch)
Better error messages for jpegtran fopen failure.
(DP 203_jpegtran_errmsg.dpatch)
Fix byte order issue with 16bit PPM/PGM files in rdppm.c/wrppm.c:
according to Netpbm, the de facto standard implementation of the PNM formats,
the most significant byte is first. (DP 203_rdppm.dpatch)
Add -raw option to rdjpgcom not to mangle the output.
(DP 205_rdjpgcom_raw.dpatch)
Make rdjpgcom locale aware. (DP 201_rdjpgcom_locale.dpatch)
Add extern "C" to jpeglib.h.
This avoids the need to put extern "C" { ... } around #include "jpeglib.h"
in your C++ application. Defining the symbol DONT_USE_EXTERN_C in the
configuration prevents this. (DP 202_jpeglib.h_c++.dpatch)
Version 6b 27-Mar-1998
-----------------------
jpegtran has new features for lossless image transformations (rotation
and flipping) as well as "lossless" reduction to grayscale.
jpegtran now copies comments by default; it has a -copy switch to enable
copying all APPn blocks as well, or to suppress comments. (Formerly it
always suppressed comments and APPn blocks.) jpegtran now also preserves
JFIF version and resolution information.
New decompressor library feature: COM and APPn markers found in the input
file can be saved in memory for later use by the application. (Before,
you had to code this up yourself with a custom marker processor.)
There is an unused field "void * client_data" now in compress and decompress
parameter structs; this may be useful in some applications.
JFIF version number information is now saved by the decoder and accepted by
the encoder. jpegtran uses this to copy the source file's version number,
to ensure "jpegtran -copy all" won't create bogus files that contain JFXX
extensions but claim to be version 1.01. Applications that generate their
own JFXX extension markers also (finally) have a supported way to cause the
encoder to emit JFIF version number 1.02.
djpeg's trace mode reports JFIF 1.02 thumbnail images as such, rather
than as unknown APP0 markers.
In -verbose mode, djpeg and rdjpgcom will try to print the contents of
APP12 markers as text. Some digital cameras store useful text information
in APP12 markers.
Handling of truncated data streams is more robust: blocks beyond the one in
which the error occurs will be output as uniform gray, or left unchanged
if decoding a progressive JPEG. The appearance no longer depends on the
Huffman tables being used.
Huffman tables are checked for validity much more carefully than before.
To avoid the Unisys LZW patent, djpeg's GIF output capability has been
changed to produce "uncompressed GIFs", and cjpeg's GIF input capability
has been removed altogether. We're not happy about it either, but there
seems to be no good alternative.
The configure script now supports building libjpeg as a shared library
on many flavors of Unix (all the ones that GNU libtool knows how to
build shared libraries for). Use "./configure --enable-shared" to
try this out.
New jconfig file and makefiles for Microsoft Visual C++ and Developer Studio.
Also, a jconfig file and a build script for Metrowerks CodeWarrior
on Apple Macintosh. makefile.dj has been updated for DJGPP v2, and there
are miscellaneous other minor improvements in the makefiles.
jmemmac.c now knows how to create temporary files following Mac System 7
conventions.
djpeg's -map switch is now able to read raw-format PPM files reliably.
cjpeg -progressive -restart no longer generates any unnecessary DRI markers.
Multiple calls to jpeg_simple_progression for a single JPEG object
no longer leak memory.
Version 6a 7-Feb-96
--------------------
Library initialization sequence modified to detect version mismatches
and struct field packing mismatches between library and calling application.
This change requires applications to be recompiled, but does not require
any application source code change.
All routine declarations changed to the style "GLOBAL(type) name ...",
that is, GLOBAL, LOCAL, METHODDEF, EXTERN are now macros taking the
routine's return type as an argument. This makes it possible to add
Microsoft-style linkage keywords to all the routines by changing just
these macros. Note that any application code that was using these macros
will have to be changed.
DCT coefficient quantization tables are now stored in normal array order
rather than zigzag order. Application code that calls jpeg_add_quant_table,
or otherwise manipulates quantization tables directly, will need to be
changed. If you need to make such code work with either older or newer
versions of the library, a test like "#if JPEG_LIB_VERSION >= 61" is
recommended.
djpeg's trace capability now dumps DQT tables in natural order, not zigzag
order. This allows the trace output to be made into a "-qtables" file
more easily.
New system-dependent memory manager module for use on Apple Macintosh.
Fix bug in cjpeg's -smooth option: last one or two scanlines would be
duplicates of the prior line unless the image height mod 16 was 1 or 2.
Repair minor problems in VMS, BCC, MC6 makefiles.
New configure script based on latest GNU Autoconf.
Correct the list of include files needed by MetroWerks C for ccommand().
Numerous small documentation updates.
Version 6 2-Aug-95
-------------------
Progressive JPEG support: library can read and write full progressive JPEG
files. A "buffered image" mode supports incremental decoding for on-the-fly
display of progressive images. Simply recompiling an existing IJG-v5-based
decoder with v6 should allow it to read progressive files, though of course
without any special progressive display.
New "jpegtran" application performs lossless transcoding between different
JPEG formats; primarily, it can be used to convert baseline to progressive
JPEG and vice versa. In support of jpegtran, the library now allows lossless
reading and writing of JPEG files as DCT coefficient arrays. This ability
may be of use in other applications.
Notes for programmers:
* We changed jpeg_start_decompress() to be able to suspend; this makes all
decoding modes available to suspending-input applications. However,
existing applications that use suspending input will need to be changed
to check the return value from jpeg_start_decompress(). You don't need to
do anything if you don't use a suspending data source.
* We changed the interface to the virtual array routines: access_virt_array
routines now take a count of the number of rows to access this time. The
last parameter to request_virt_array routines is now interpreted as the
maximum number of rows that may be accessed at once, but not necessarily
the height of every access.
Version 5b 15-Mar-95
---------------------
Correct bugs with grayscale images having v_samp_factor > 1.
jpeg_write_raw_data() now supports output suspension.
Correct bugs in "configure" script for case of compiling in
a directory other than the one containing the source files.
Repair bug in jquant1.c: sometimes didn't use as many colors as it could.
Borland C makefile and jconfig file work under either MS-DOS or OS/2.
Miscellaneous improvements to documentation.
Version 5a 7-Dec-94
--------------------
Changed color conversion roundoff behavior so that grayscale values are
represented exactly. (This causes test image files to change.)
Make ordered dither use 16x16 instead of 4x4 pattern for a small quality
improvement.
New configure script based on latest GNU Autoconf.
Fix configure script to handle CFLAGS correctly.
Rename *.auto files to *.cfg, so that configure script still works if
file names have been truncated for DOS.
Fix bug in rdbmp.c: didn't allow for extra data between header and image.
Modify rdppm.c/wrppm.c to handle 2-byte raw PPM/PGM formats for 12-bit data.
Fix several bugs in rdrle.c.
NEED_SHORT_EXTERNAL_NAMES option was broken.
Revise jerror.h/jerror.c for more flexibility in message table.
Repair oversight in jmemname.c NO_MKTEMP case: file could be there
but unreadable.
Version 5 24-Sep-94
--------------------
Version 5 represents a nearly complete redesign and rewrite of the IJG
software. Major user-visible changes include:
* Automatic configuration simplifies installation for most Unix systems.
* A range of speed vs. image quality tradeoffs are supported.
This includes resizing of an image during decompression: scaling down
by a factor of 1/2, 1/4, or 1/8 is handled very efficiently.
* New programs rdjpgcom and wrjpgcom allow insertion and extraction
of text comments in a JPEG file.
The application programmer's interface to the library has changed completely.
Notable improvements include:
* We have eliminated the use of callback routines for handling the
uncompressed image data. The application now sees the library as a
set of routines that it calls to read or write image data on a
scanline-by-scanline basis.
* The application image data is represented in a conventional interleaved-
pixel format, rather than as a separate array for each color channel.
This can save a copying step in many programs.
* The handling of compressed data has been cleaned up: the application can
supply routines to source or sink the compressed data. It is possible to
suspend processing on source/sink buffer overrun, although this is not
supported in all operating modes.
* All static state has been eliminated from the library, so that multiple
instances of compression or decompression can be active concurrently.
* JPEG abbreviated datastream formats are supported, ie, quantization and
Huffman tables can be stored separately from the image data.
* And not only that, but the documentation of the library has improved
considerably!
The last widely used release before the version 5 rewrite was version 4A of
18-Feb-93. Change logs before that point have been discarded, since they
are not of much interest after the rewrite.

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.TH CJPEG 1 "11 October 2010"
.SH NAME
cjpeg \- compress an image file to a JPEG file
.SH SYNOPSIS
.B cjpeg
[
.I options
]
[
.I filename
]
.LP
.SH DESCRIPTION
.LP
.B cjpeg
compresses the named image file, or the standard input if no file is
named, and produces a JPEG/JFIF file on the standard output.
The currently supported input file formats are: PPM (PBMPLUS color
format), PGM (PBMPLUS gray-scale format), BMP, Targa, and RLE (Utah Raster
Toolkit format). (RLE is supported only if the URT library is available.)
.SH OPTIONS
All switch names may be abbreviated; for example,
.B \-grayscale
may be written
.B \-gray
or
.BR \-gr .
Most of the "basic" switches can be abbreviated to as little as one letter.
Upper and lower case are equivalent (thus
.B \-BMP
is the same as
.BR \-bmp ).
British spellings are also accepted (e.g.,
.BR \-greyscale ),
though for brevity these are not mentioned below.
.PP
The basic switches are:
.TP
.BI \-quality " N[,...]"
Scale quantization tables to adjust image quality. Quality is 0 (worst) to
100 (best); default is 75. (See below for more info.)
.TP
.B \-grayscale
Create monochrome JPEG file from color input. Be sure to use this switch when
compressing a grayscale BMP file, because
.B cjpeg
isn't bright enough to notice whether a BMP file uses only shades of gray.
By saying
.BR \-grayscale ,
you'll get a smaller JPEG file that takes less time to process.
.TP
.B \-optimize
Perform optimization of entropy encoding parameters. Without this, default
encoding parameters are used.
.B \-optimize
usually makes the JPEG file a little smaller, but
.B cjpeg
runs somewhat slower and needs much more memory. Image quality and speed of
decompression are unaffected by
.BR \-optimize .
.TP
.B \-progressive
Create progressive JPEG file (see below).
.TP
.B \-targa
Input file is Targa format. Targa files that contain an "identification"
field will not be automatically recognized by
.BR cjpeg ;
for such files you must specify
.B \-targa
to make
.B cjpeg
treat the input as Targa format.
For most Targa files, you won't need this switch.
.PP
The
.B \-quality
switch lets you trade off compressed file size against quality of the
reconstructed image: the higher the quality setting, the larger the JPEG file,
and the closer the output image will be to the original input. Normally you
want to use the lowest quality setting (smallest file) that decompresses into
something visually indistinguishable from the original image. For this
purpose the quality setting should be between 50 and 95; the default of 75 is
often about right. If you see defects at
.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.)
.PP
.B \-quality
100 will generate a quantization table of all 1's, minimizing loss in the
quantization step (but there is still information loss in subsampling, as well
as roundoff error). This setting is mainly of interest for experimental
purposes. Quality values above about 95 are
.B not
recommended for normal use; the compressed file size goes up dramatically for
hardly any gain in output image quality.
.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
index of a large image library, for example. Try
.B \-quality
2 (or so) for some amusing Cubist effects. (Note: quality
values below about 25 generate 2-byte quantization tables, which are
considered optional in the JPEG standard.
.B cjpeg
emits a warning message when you give such a quality value, because some
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 which 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.
.PP
The
.B \-progressive
switch creates a "progressive JPEG" file. In this type of JPEG file, the data
is stored in multiple scans of increasing quality. If the file is being
transmitted over a slow communications link, the decoder can use the first
scan to display a low-quality image very quickly, and can then improve the
display with each subsequent scan. The final image is exactly equivalent to a
standard JPEG file of the same quality setting, and the total file size is
about the same --- often a little smaller.
.PP
Switches for advanced users:
.TP
.B \-dct int
Use integer DCT method (default).
.TP
.B \-dct fast
Use fast integer DCT (less accurate).
.TP
.B \-dct float
Use floating-point DCT method.
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 \-restart " N"
Emit a JPEG restart marker every N MCU rows, or every N MCU blocks if "B" is
attached to the number.
.B \-restart 0
(the default) means no restart markers.
.TP
.BI \-smooth " N"
Smooth the input image to eliminate dithering noise. N, ranging from 1 to
100, indicates the strength of smoothing. 0 (the default) means no smoothing.
.TP
.BI \-maxmemory " N"
Set limit for amount of memory to use in processing large images. Value is
in thousands of bytes, or millions of bytes if "M" is attached to the
number. For example,
.B \-max 4m
selects 4000000 bytes. If more space is needed, temporary files will be used.
.TP
.BI \-outfile " name"
Send output image to the named file, not to standard output.
.TP
.B \-verbose
Enable debug printout. More
.BR \-v 's
give more output. Also, version information is printed at startup.
.TP
.B \-debug
Same as
.BR \-verbose .
.PP
The
.B \-restart
option inserts extra markers that allow a JPEG decoder to resynchronize after
a transmission error. Without restart markers, any damage to a compressed
file will usually ruin the image from the point of the error to the end of the
image; with restart markers, the damage is usually confined to the portion of
the image up to the next restart marker. Of course, the restart markers
occupy extra space. We recommend
.B \-restart 1
for images that will be transmitted across unreliable networks such as Usenet.
.PP
The
.B \-smooth
option filters the input to eliminate fine-scale noise. This is often useful
when converting dithered images to JPEG: a moderate smoothing factor of 10 to
50 gets rid of dithering patterns in the input file, resulting in a smaller
JPEG file and a better-looking image. Too large a smoothing factor will
visibly blur the image, however.
.PP
Switches for wizards:
.TP
.B \-arithmetic
Use arithmetic coding.
.B Caution:
arithmetic coded JPEG is not yet widely implemented, so many decoders will be
unable to view an arithmetic coded JPEG file at all.
.TP
.B \-baseline
Force baseline-compatible quantization tables to be generated. This clamps
quantization values to 8 bits even at low quality settings. (This switch is
poorly named, since it does not ensure that the output is actually baseline
JPEG. For example, you can use
.B \-baseline
and
.B \-progressive
together.)
.TP
.BI \-qtables " file"
Use the quantization tables given in the specified text file.
.TP
.BI \-qslots " N[,...]"
Select which quantization table to use for each color component.
.TP
.BI \-sample " HxV[,...]"
Set JPEG sampling factors for each color component.
.TP
.BI \-scans " file"
Use the scan script given in the specified text file.
.PP
The "wizard" switches are intended for experimentation with JPEG. If you
don't know what you are doing, \fBdon't use them\fR. These switches are
documented further in the file wizard.txt.
.SH EXAMPLES
.LP
This example compresses the PPM file foo.ppm with a quality factor of
60 and saves the output as foo.jpg:
.IP
.B cjpeg \-quality
.I 60 foo.ppm
.B >
.I foo.jpg
.SH HINTS
Color GIF files are not the ideal input for JPEG; JPEG is really intended for
compressing full-color (24-bit) images. In particular, don't try to convert
cartoons, line drawings, and other images that have only a few distinct
colors. GIF works great on these, JPEG does not. If you want to convert a
GIF to JPEG, you should experiment with
.BR cjpeg 's
.B \-quality
and
.B \-smooth
options to get a satisfactory conversion.
.B \-smooth 10
or so is often helpful.
.PP
Avoid running an image through a series of JPEG compression/decompression
cycles. Image quality loss will accumulate; after ten or so cycles the image
may be noticeably worse than it was after one cycle. It's best to use a
lossless format while manipulating an image, then convert to JPEG format when
you are ready to file the image away.
.PP
The
.B \-optimize
option to
.B cjpeg
is worth using when you are making a "final" version for posting or archiving.
It's also a win when you are using low quality settings to make very small
JPEG files; the percentage improvement is often a lot more than it is on
larger files. (At present,
.B \-optimize
mode is always selected when generating progressive JPEG files.)
.SH ENVIRONMENT
.TP
.B JPEGMEM
If this environment variable is set, its value is the default memory limit.
The value is specified as described for the
.B \-maxmemory
switch.
.B JPEGMEM
overrides the default value specified when the program was compiled, and
itself is overridden by an explicit
.BR \-maxmemory .
.SH SEE ALSO
.BR djpeg (1),
.BR jpegtran (1),
.BR rdjpgcom (1),
.BR wrjpgcom (1)
.br
.BR ppm (5),
.BR pgm (5)
.br
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
.SH BUGS
Support for GIF input files was removed in cjpeg v6b due to concerns over
the Unisys LZW patent. Although this patent expired in 2006, cjpeg still
lacks GIF support, for these historical reasons. (Conversion of GIF files to
JPEG is usually a bad idea anyway.)
.PP
Not all variants of BMP and Targa file formats are supported.
.PP
The
.B \-targa
switch is not a bug, it's a feature. (It would be a bug if the Targa format
designers had not been clueless.)

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/*
* cjpeg.c
*
* Copyright (C) 1991-1998, Thomas G. Lane.
* Modified 2003-2008 by Guido Vollbeding.
* Copyright (C) 2010, D. R. Commander.
* 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]
* 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).
* The second style is convenient on Unix but is unhelpful on systems that
* 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
* 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 "config.h"
#ifdef USE_CCOMMAND /* command-line reader for Macintosh */
#ifdef __MWERKS__
#include <SIOUX.h> /* Metrowerks needs this */
#include <console.h> /* ... and this */
#endif
#ifdef THINK_C
#include <console.h> /* Think declares it here */
#endif
#endif
/* Create the add-on message string table. */
#define JMESSAGE(code,string) string ,
static const char * const cdjpeg_message_table[] = {
#include "cderror.h"
NULL
};
/*
* This routine determines what format the input file is,
* and selects the appropriate input-reading module.
*
* To determine which family of input formats the file belongs to,
* we may look only at the first byte of the file, since C does not
* guarantee that more than one character can be pushed back with ungetc.
* Looking at additional bytes would require one of these approaches:
* 1) assume we can fseek() the input file (fails for piped input);
* 2) assume we can push back more than one character (works in
* some C implementations, but unportable);
* 3) provide our own buffering (breaks input readers that want to use
* stdio directly, such as the RLE library);
* or 4) don't put back the data, and modify the input_init methods to assume
* they start reading after the start of file (also breaks RLE library).
* #1 is attractive for MS-DOS but is untenable on Unix.
*
* The most portable solution for file types that can't be identified by their
* first byte is to make the user tell us what they are. This is also the
* only approach for "raw" file types that contain only arbitrary values.
* We presently apply this method for Targa files. Most of the time Targa
* files start with 0x00, so we recognize that case. Potentially, however,
* a Targa file could start with any byte value (byte 0 is the length of the
* seldom-used ID field), so we provide a switch to force Targa input mode.
*/
static boolean is_targa; /* records user -targa switch */
LOCAL(cjpeg_source_ptr)
select_file_type (j_compress_ptr cinfo, FILE * infile)
{
int c;
if (is_targa) {
#ifdef TARGA_SUPPORTED
return jinit_read_targa(cinfo);
#else
ERREXIT(cinfo, JERR_TGA_NOTCOMP);
#endif
}
if ((c = getc(infile)) == EOF)
ERREXIT(cinfo, JERR_INPUT_EMPTY);
if (ungetc(c, infile) == EOF)
ERREXIT(cinfo, JERR_UNGETC_FAILED);
switch (c) {
#ifdef BMP_SUPPORTED
case 'B':
return jinit_read_bmp(cinfo);
#endif
#ifdef GIF_SUPPORTED
case 'G':
return jinit_read_gif(cinfo);
#endif
#ifdef PPM_SUPPORTED
case 'P':
return jinit_read_ppm(cinfo);
#endif
#ifdef RLE_SUPPORTED
case 'R':
return jinit_read_rle(cinfo);
#endif
#ifdef TARGA_SUPPORTED
case 0x00:
return jinit_read_targa(cinfo);
#endif
default:
ERREXIT(cinfo, JERR_UNKNOWN_FORMAT);
break;
}
return NULL; /* suppress compiler warnings */
}
/*
* Argument-parsing code.
* The switch parser is designed to be useful with DOS-style command line
* syntax, ie, intermixed switches and file names, where only the switches
* to the left of a given file name affect processing of that file.
* The main program in this file doesn't actually use this capability...
*/
static const char * progname; /* program name for error messages */
static char * outfilename; /* for -outfile switch */
LOCAL(void)
usage (void)
/* complain about bad command line */
{
fprintf(stderr, "usage: %s [switches] ", progname);
#ifdef TWO_FILE_COMMANDLINE
fprintf(stderr, "inputfile outputfile\n");
#else
fprintf(stderr, "[inputfile]\n");
#endif
fprintf(stderr, "Switches (names may be abbreviated):\n");
fprintf(stderr, " -quality N[,...] Compression quality (0..100; 5-95 is useful range)\n");
fprintf(stderr, " -grayscale Create monochrome JPEG file\n");
#ifdef ENTROPY_OPT_SUPPORTED
fprintf(stderr, " -optimize Optimize Huffman table (smaller file, but slow compression)\n");
#endif
#ifdef C_PROGRESSIVE_SUPPORTED
fprintf(stderr, " -progressive Create progressive JPEG file\n");
#endif
#ifdef TARGA_SUPPORTED
fprintf(stderr, " -targa Input file is Targa format (usually not needed)\n");
#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)" : ""));
#endif
#ifdef DCT_IFAST_SUPPORTED
fprintf(stderr, " -dct fast Use fast integer DCT (less accurate)%s\n",
(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)" : ""));
#endif
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");
fprintf(stderr, " -verbose or -debug Emit debug output\n");
fprintf(stderr, "Switches for wizards:\n");
#ifdef C_ARITH_CODING_SUPPORTED
fprintf(stderr, " -arithmetic Use arithmetic coding\n");
#endif
fprintf(stderr, " -baseline Force baseline quantization tables\n");
fprintf(stderr, " -qtables file Use quantization tables given in file\n");
fprintf(stderr, " -qslots N[,...] Set component quantization tables\n");
fprintf(stderr, " -sample HxV[,...] Set component sampling factors\n");
#ifdef C_MULTISCAN_FILES_SUPPORTED
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 optional switches.
* Returns argv[] index of first file-name argument (== argc if none).
* Any file names with indexes <= last_file_arg_seen are ignored;
* they have presumably been processed in a previous iteration.
* (Pass 0 for last_file_arg_seen on the first or only iteration.)
* for_real is FALSE on the first (dummy) pass; we may skip any expensive
* processing.
*/
{
int argn;
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 */
/* Set up default JPEG parameters. */
force_baseline = FALSE; /* by default, allow 16-bit quantizers */
simple_progressive = FALSE;
is_targa = FALSE;
outfilename = NULL;
cinfo->err->trace_level = 0;
/* Scan command line options, adjust parameters */
for (argn = 1; argn < argc; argn++) {
arg = argv[argn];
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 */
}
break; /* else done parsing switches */
}
arg++; /* advance past switch marker character */
if (keymatch(arg, "arithmetic", 1)) {
/* Use arithmetic coding. */
#ifdef C_ARITH_CODING_SUPPORTED
cinfo->arith_code = TRUE;
#else
fprintf(stderr, "%s: sorry, arithmetic coding not supported\n",
progname);
exit(EXIT_FAILURE);
#endif
} else if (keymatch(arg, "baseline", 1)) {
/* Force baseline-compatible output (8-bit quantizer values). */
force_baseline = TRUE;
} else if (keymatch(arg, "dct", 2)) {
/* Select DCT algorithm. */
if (++argn >= argc) /* advance to next argument */
usage();
if (keymatch(argv[argn], "int", 1)) {
cinfo->dct_method = JDCT_ISLOW;
} else if (keymatch(argv[argn], "fast", 2)) {
cinfo->dct_method = JDCT_IFAST;
} else if (keymatch(argv[argn], "float", 2)) {
cinfo->dct_method = JDCT_FLOAT;
} else
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", LJTCOPYRIGHT);
fprintf(stderr, "Based on Independent JPEG Group's libjpeg, version %s\n%s\n\n",
JVERSION, JCOPYRIGHT);
printed_version = TRUE;
}
cinfo->err->trace_level++;
} 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, "maxmemory", 3)) {
/* Maximum memory in Kb (or Mb with 'm'). */
long lval;
char ch = 'x';
if (++argn >= argc) /* advance to next argument */
usage();
if (sscanf(argv[argn], "%ld%c", &lval, &ch) < 1)
usage();
if (ch == 'm' || ch == 'M')
lval *= 1000L;
cinfo->mem->max_memory_to_use = lval * 1000L;
} 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\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 */
} else if (keymatch(arg, "progressive", 1)) {
/* Select simple progressive mode. */
#ifdef C_PROGRESSIVE_SUPPORTED
simple_progressive = TRUE;
/* We must postpone execution until num_components is known. */
#else
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();
qualityarg = argv[argn];
} else if (keymatch(arg, "qslots", 2)) {
/* Quantization table slot numbers. */
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
* default quant table numbers.
*/
} else if (keymatch(arg, "qtables", 2)) {
/* Quantization tables fetched from file. */
if (++argn >= argc) /* advance to next argument */
usage();
qtablefile = argv[argn];
/* We postpone actually reading the file in case -quality comes later. */
} else if (keymatch(arg, "restart", 1)) {
/* Restart interval in MCU rows (or in MCUs with 'b'). */
long lval;
char ch = 'x';
if (++argn >= argc) /* advance to next argument */
usage();
if (sscanf(argv[argn], "%ld%c", &lval, &ch) < 1)
usage();
if (lval < 0 || lval > 65535L)
usage();
if (ch == 'b' || ch == 'B') {
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 */
}
} else if (keymatch(arg, "sample", 2)) {
/* Set sampling factors. */
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, "scans", 4)) {
/* Set scan script. */
#ifdef C_MULTISCAN_FILES_SUPPORTED
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\n",
progname);
exit(EXIT_FAILURE);
#endif
} else if (keymatch(arg, "smooth", 2)) {
/* Set input smoothing factor. */
int val;
if (++argn >= argc) /* advance to next argument */
usage();
if (sscanf(argv[argn], "%d", &val) != 1)
usage();
if (val < 0 || val > 100)
usage();
cinfo->smoothing_factor = val;
} else if (keymatch(arg, "targa", 1)) {
/* Input file is Targa format. */
is_targa = TRUE;
} else {
usage(); /* bogus switch */
}
}
/* Post-switch-scanning cleanup */
if (for_real) {
/* 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 (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 (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 */
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();
#endif
}
return argn; /* return index of next arg (file name) */
}
/*
* The main program.
*/
int
main (int argc, char **argv)
{
struct jpeg_compress_struct cinfo;
struct jpeg_error_mgr jerr;
#ifdef PROGRESS_REPORT
struct cdjpeg_progress_mgr progress;
#endif
int file_index;
cjpeg_source_ptr src_mgr;
FILE * input_file;
FILE * output_file;
JDIMENSION num_scanlines;
/* On Mac, fetch a command line. */
#ifdef USE_CCOMMAND
argc = ccommand(&argv);
#endif
progname = argv[0];
if (progname == NULL || progname[0] == 0)
progname = "cjpeg"; /* in case C library doesn't provide it */
/* Initialize the JPEG compression object with default error handling. */
cinfo.err = jpeg_std_error(&jerr);
jpeg_create_compress(&cinfo);
/* Add some application-specific error messages (from cderror.h) */
jerr.addon_message_table = cdjpeg_message_table;
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,
* but we need to provide some value for jpeg_set_defaults() to work.
*/
cinfo.in_color_space = JCS_RGB; /* arbitrary guess */
jpeg_set_defaults(&cinfo);
/* Scan command line to find file names.
* It is convenient to use just one switch-parsing routine, but the switch
* values read here are ignored; we will rescan the switches after opening
* the input file.
*/
file_index = parse_switches(&cinfo, argc, argv, 0, FALSE);
#ifdef TWO_FILE_COMMANDLINE
/* 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) {
fprintf(stderr, "%s: only one input file\n", progname);
usage();
}
#endif /* TWO_FILE_COMMANDLINE */
/* Open the input file. */
if (file_index < argc) {
if ((input_file = fopen(argv[file_index], READ_BINARY)) == NULL) {
fprintf(stderr, "%s: can't open %s\n", progname, argv[file_index]);
exit(EXIT_FAILURE);
}
} else {
/* default input file is stdin */
input_file = read_stdin();
}
/* Open the output file. */
if (outfilename != NULL) {
if ((output_file = fopen(outfilename, WRITE_BINARY)) == NULL) {
fprintf(stderr, "%s: can't open %s\n", progname, outfilename);
exit(EXIT_FAILURE);
}
} else {
/* default output file is stdout */
output_file = write_stdout();
}
#ifdef PROGRESS_REPORT
start_progress_monitor((j_common_ptr) &cinfo, &progress);
#endif
/* Figure out the input file format, and set up to read it. */
src_mgr = select_file_type(&cinfo, input_file);
src_mgr->input_file = input_file;
/* Read the input file header to obtain file size & colorspace. */
(*src_mgr->start_input) (&cinfo, src_mgr);
/* Now that we know input colorspace, fix colorspace-dependent defaults */
jpeg_default_colorspace(&cinfo);
/* Adjust default compression parameters by re-parsing the options */
file_index = parse_switches(&cinfo, argc, argv, 0, TRUE);
/* Specify data destination for compression */
jpeg_stdio_dest(&cinfo, output_file);
/* Start compressor */
jpeg_start_compress(&cinfo, TRUE);
/* 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);
}
/* Finish compression and release memory */
(*src_mgr->finish_input) (&cinfo, src_mgr);
jpeg_finish_compress(&cinfo);
jpeg_destroy_compress(&cinfo);
/* Close files, if we opened them */
if (input_file != stdin)
fclose(input_file);
if (output_file != stdout)
fclose(output_file);
#ifdef PROGRESS_REPORT
end_progress_monitor((j_common_ptr) &cinfo);
#endif
/* All done. */
exit(jerr.num_warnings ? EXIT_WARNING : EXIT_SUCCESS);
return 0; /* suppress no-return-value warnings */
}

3
jni/jpeg-turbo/cmakescripts/getdate.bat Normal file
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@echo off
for /f "tokens=1-4 eol=/ DELIMS=/ " %%i in ('date /t') do set BUILD=%%l%%j%%k
echo %BUILD%

34
jni/jpeg-turbo/cmakescripts/testclean.cmake Normal file
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file(GLOB FILES
testout*
*_GRAY_*.bmp
*_GRAY_*.png
*_GRAY_*.ppm
*_GRAY_*.jpg
*_GRAY.yuv
*_420_*.bmp
*_420_*.png
*_420_*.ppm
*_420_*.jpg
*_420.yuv
*_422_*.bmp
*_422_*.png
*_422_*.ppm
*_422_*.jpg
*_422.yuv
*_444_*.bmp
*_444_*.png
*_444_*.ppm
*_444_*.jpg
*_444.yuv
*_440_*.bmp
*_440_*.png
*_440_*.ppm
*_440_*.jpg
*_440.yuv)
if(NOT FILES STREQUAL "")
message(STATUS "Removing test files")
file(REMOVE ${FILES})
else()
message(STATUS "No files to remove")
endif()

118
jni/jpeg-turbo/coderules.txt Normal file
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IJG JPEG LIBRARY: CODING RULES
Copyright (C) 1991-1996, 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.
Since numerous people will be contributing code and bug fixes, it's important
to establish a common coding style. The goal of using similar coding styles
is much more important than the details of just what that style is.
In general we follow the recommendations of "Recommended C Style and Coding
Standards" revision 6.1 (Cannon et al. as modified by Spencer, Keppel and
Brader). This document is available in the IJG FTP archive (see
jpeg/doc/cstyle.ms.tbl.Z, or cstyle.txt.Z for those without nroff/tbl).
Block comments should be laid out thusly:
/*
* Block comments in this style.
*/
We indent statements in K&R style, e.g.,
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. (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
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.)
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,
we want it to be reentrant so that it can be used by applications that process
multiple images concurrently. The following rules support these requirements:
1. Avoid direct use of file I/O, "malloc", error report printouts, etc;
pass these through the common routines provided.
2. Minimize global namespace pollution. Functions should be declared static
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_", 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.
4. Don't use static variables except for read-only constant tables. Variables
that should be private to a module can be placed into private structures (see
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 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
proper. Those modules are not really intended to be used in other
applications.

358
jni/jpeg-turbo/configure.ac Normal file
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# -*- Autoconf -*-
# Process this file with autoconf to produce a configure script.
AC_PREREQ([2.56])
AC_INIT([libjpeg-turbo], [1.1.90])
BUILD=`date +%Y%m%d`
AM_INIT_AUTOMAKE([-Wall foreign dist-bzip2])
AC_PREFIX_DEFAULT(/opt/libjpeg-turbo)
# Always build with prototypes
AC_DEFINE([HAVE_PROTOTYPES], 1, [Define if your compiler supports prototypes])
# Checks for programs.
SAVED_CFLAGS=${CFLAGS}
SAVED_CPPFLAGS=${CPPFLAGS}
AC_PROG_CPP
AC_PROG_CC
AM_PROG_AS
AC_PROG_INSTALL
AC_PROG_LIBTOOL
AC_PROG_LN_S
# Check whether compiler supports pointers to undefined structures
AC_MSG_CHECKING(whether compiler supports pointers to undefined structures)
AC_TRY_COMPILE([ typedef struct undefined_structure * undef_struct_ptr; ], ,
AC_MSG_RESULT(yes),
[AC_MSG_RESULT(no)
AC_DEFINE([INCOMPLETE_TYPES_BROKEN],[1],[Compiler does not support pointers to undefined structures.])])
if test "x${GCC}" = "xyes"; then
if test "x${SAVED_CFLAGS}" = "x"; then
CFLAGS=-O3
fi
if test "x${SAVED_CPPFLAGS}" = "x"; then
CPPFLAGS=-Wall
fi
fi
AC_CHECK_DECL([__SUNPRO_C], [SUNCC="yes"], [SUNCC="no"])
if test "x${SUNCC}" = "xyes"; then
if test "x${SAVED_CFLAGS}" = "x"; then
CFLAGS=-xO5
fi
fi
# Checks for libraries.
# Checks for header files.
AC_HEADER_STDC
AC_CHECK_HEADERS([stddef.h stdlib.h string.h])
AC_CHECK_HEADER([sys/types.h], AC_DEFINE([NEED_SYS_TYPES_H], 1, [Define if you have sys/types.h]))
# Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_C_CHAR_UNSIGNED
AC_C_INLINE
AC_TYPE_SIZE_T
AC_CHECK_TYPES([unsigned char, unsigned short])
AC_MSG_CHECKING([if right shift is signed])
AC_TRY_RUN(
[#include <stdio.h>
int is_shifting_signed (long arg) {
long res = arg >> 4;
if (res == -0x7F7E80CL)
return 1; /* right shift is signed */
/* see if unsigned-shift hack will fix it. */
/* we can't just test exact value since it depends on width of long... */
res |= (~0L) << (32-4);
if (res == -0x7F7E80CL)
return 0; /* right shift is unsigned */
printf("Right shift isn't acting as I expect it to.\n");
printf("I fear the JPEG software will not work at all.\n\n");
return 0; /* try it with unsigned anyway */
}
int main (void) {
exit(is_shifting_signed(-0x7F7E80B1L));
}],
[AC_MSG_RESULT(no)
AC_DEFINE([RIGHT_SHIFT_IS_UNSIGNED], 1, [Define if shift is unsigned])],
[AC_MSG_RESULT(yes)],
[AC_MSG_RESULT(Assuming that right shift is signed on target machine.)])
# test whether global names are unique to at least 15 chars
AC_MSG_CHECKING([for short external names])
AC_TRY_LINK(
[int possibly_duplicate_function () { return 0; }
int possibly_dupli_function () { return 1; }], [ ],
[AC_MSG_RESULT(ok)],
[AC_MSG_RESULT(short)
AC_DEFINE([NEED_SHORT_EXTERNAL_NAMES], 1, [Define if you need short function names])])
# Checks for library functions.
AC_CHECK_FUNCS([memset memcpy], [],
[AC_DEFINE([NEED_BSD_STRINGS], 1,
[Define if you have BSD-like bzero and bcopy])])
AC_MSG_CHECKING([libjpeg API version])
AC_ARG_VAR(JPEG_LIB_VERSION, [libjpeg API version (62, 70, or 80)])
if test "x$JPEG_LIB_VERSION" = "x"; then
AC_ARG_WITH([jpeg7],
AC_HELP_STRING([--with-jpeg7], [Emulate libjpeg v7 API/ABI (this makes libjpeg-turbo backward incompatible with libjpeg v6b.)]))
AC_ARG_WITH([jpeg8],
AC_HELP_STRING([--with-jpeg8], [Emulate libjpeg v8 API/ABI (this makes libjpeg-turbo backward incompatible with libjpeg v6b.)]))
if test "x${with_jpeg8}" = "xyes"; then
JPEG_LIB_VERSION=80
else
if test "x${with_jpeg7}" = "xyes"; then
JPEG_LIB_VERSION=70
else
JPEG_LIB_VERSION=62
fi
fi
fi
JPEG_LIB_VERSION_DECIMAL=`expr $JPEG_LIB_VERSION / 10`.`expr $JPEG_LIB_VERSION % 10`
AC_SUBST(JPEG_LIB_VERSION_DECIMAL)
AC_MSG_RESULT([$JPEG_LIB_VERSION_DECIMAL])
AC_DEFINE_UNQUOTED(JPEG_LIB_VERSION, [$JPEG_LIB_VERSION], [libjpeg API version])
AC_MSG_CHECKING([libjpeg shared library version])
AC_ARG_VAR(SO_MAJOR_VERSION, [Major version of the libjpeg-turbo shared library (default is determined by the API version)])
AC_ARG_VAR(SO_MINOR_VERSION, [Minor version of the libjpeg-turbo shared library (default is determined by the API version)])
if test "x$SO_MAJOR_VERSION" = "x"; then
case "$JPEG_LIB_VERSION" in
62) SO_MAJOR_VERSION=$JPEG_LIB_VERSION ;;
*) SO_MAJOR_VERSION=`expr $JPEG_LIB_VERSION / 10` ;;
esac
fi
if test "x$SO_MINOR_VERSION" = "x"; then
case "$JPEG_LIB_VERSION" in
80) SO_MINOR_VERSION=2 ;;
*) SO_MINOR_VERSION=0 ;;
esac
fi
AC_MSG_RESULT([$SO_MAJOR_VERSION:$SO_MINOR_VERSION])
AC_SUBST(SO_MAJOR_VERSION)
AC_SUBST(SO_MINOR_VERSION)
VERSION_SCRIPT=yes
AC_ARG_ENABLE([ld-version-script],
AS_HELP_STRING([--disable-ld-version-script],
[Disable linker version script for libjpeg-turbo (default is to use linker version script if the linker supports it)]),
[VERSION_SCRIPT=$enableval], [])
AC_MSG_CHECKING([whether the linker supports version scripts])
SAVED_LDFLAGS="$LDFLAGS"
LDFLAGS="$LDFLAGS -Wl,--version-script,conftest.map"
cat > conftest.map <<EOF
VERS_1 {
global: *;
};
EOF
AC_LINK_IFELSE(AC_LANG_PROGRAM([], []),
[VERSION_SCRIPT_FLAG=-Wl,--version-script,; AC_MSG_RESULT([yes (GNU style)])], [])
if test "x$VERSION_SCRIPT_FLAG" = "x"; then
LDFLAGS="$SAVED_LDFLAGS -Wl,-M,conftest.map"
AC_LINK_IFELSE(AC_LANG_PROGRAM([], []),
[VERSION_SCRIPT_FLAG=-Wl,-M,; AC_MSG_RESULT([yes (Sun style)])], [])
fi
if test "x$VERSION_SCRIPT_FLAG" = "x"; then
VERSION_SCRIPT=no
AC_MSG_RESULT(no)
fi
LDFLAGS="$SAVED_LDFLAGS"
AC_MSG_CHECKING([whether to use version script when building libjpeg-turbo])
AC_MSG_RESULT($VERSION_SCRIPT)
AM_CONDITIONAL(VERSION_SCRIPT, test "x$VERSION_SCRIPT" = "xyes")
AC_SUBST(VERSION_SCRIPT_FLAG)
AC_MSG_CHECKING([whether to include arithmetic encoding support])
AC_ARG_WITH([arith-enc],
AC_HELP_STRING([--without-arith-enc], [Omit arithmetic encoding support]))
if test "x$with_arith_enc" = "xno"; then
AC_MSG_RESULT(no)
else
AC_DEFINE([C_ARITH_CODING_SUPPORTED], [1], [Support arithmetic encoding])
AC_MSG_RESULT(yes)
fi
AM_CONDITIONAL([WITH_ARITH_ENC], [test "x$with_arith_enc" != "xno"])
AC_MSG_CHECKING([whether to include arithmetic decoding support])
AC_ARG_WITH([arith-dec],
AC_HELP_STRING([--without-arith-dec], [Omit arithmetic decoding support]))
if test "x$with_arith_dec" = "xno"; then
AC_MSG_RESULT(no)
else
AC_DEFINE([D_ARITH_CODING_SUPPORTED], [1], [Support arithmetic decoding])
AC_MSG_RESULT(yes)
fi
AM_CONDITIONAL([WITH_ARITH_DEC], [test "x$with_arith_dec" != "xno"])
AM_CONDITIONAL([WITH_ARITH], [test "x$with_arith_dec" != "xno" -o "x$with_arith_enc" != "xno"])
AC_ARG_VAR(JAVAC, [Java compiler command (default: javac)])
if test "x$JAVAC" = "x"; then
JAVAC=javac
fi
AC_SUBST(JAVAC)
AC_ARG_VAR(JAVACFLAGS, [Java compiler flags])
AC_SUBST(JAVACFLAGS)
AC_ARG_VAR(JAR, [Java archive command (default: jar)])
if test "x$JAR" = "x"; then
JAR=jar
fi
AC_SUBST(JAR)
AC_ARG_VAR(JAVA, [Java runtime command (default: java)])
if test "x$JAVA" = "x"; then
JAVA=java
fi
AC_SUBST(JAVA)
AC_ARG_VAR(JNI_CFLAGS, [C compiler flags needed to include jni.h (default: -I/System/Library/Frameworks/JavaVM.framework/Headers on OS X, '-I/usr/java/include -I/usr/java/include/solaris' on Solaris, and '-I/usr/java/default/include -I/usr/java/default/include/linux' on Linux)])
AC_MSG_CHECKING([whether to build TurboJPEG/OSS Java wrapper])
AC_ARG_WITH([java],
AC_HELP_STRING([--with-java],[Build Java wrapper for the TurboJPEG/OSS library]))
RPM_CONFIG_ARGS=
WITH_JAVA=0
if test "x$with_java" = "xyes"; then
AC_MSG_RESULT(yes)
case $host_os in
darwin*)
DEFAULT_JNI_CFLAGS=-I/System/Library/Frameworks/JavaVM.framework/Headers
;;
solaris*)
DEFAULT_JNI_CFLAGS='-I/usr/java/include -I/usr/java/include/solaris'
;;
linux*)
DEFAULT_JNI_CFLAGS='-I/usr/java/default/include -I/usr/java/default/include/linux'
;;
esac
if test "x$JNI_CFLAGS" = "x"; then
JNI_CFLAGS=$DEFAULT_JNI_CFLAGS
fi
SAVE_CPPFLAGS=${CPPFLAGS}
CPPFLAGS="${CPPFLAGS} ${JNI_CFLAGS}"
AC_CHECK_HEADERS([jni.h], [DUMMY=1],
[AC_MSG_ERROR([Could not find JNI header file])])
CPPFLAGS=${SAVE_CPPFLAGS}
AC_SUBST(JNI_CFLAGS)
RPM_CONFIG_ARGS=--with-java
JAVA_RPM_CONTENTS_1='%dir /opt/%{name}/classes'
JAVA_RPM_CONTENTS_2=/opt/%{name}/classes/turbojpeg.jar
WITH_JAVA=1
else
AC_MSG_RESULT(no)
fi
AM_CONDITIONAL([WITH_JAVA], [test "x$with_java" = "xyes"])
AC_SUBST(WITH_JAVA)
AC_SUBST(JAVA_RPM_CONTENTS_1)
AC_SUBST(JAVA_RPM_CONTENTS_2)
AC_SUBST(RPM_CONFIG_ARGS)
# optionally force using gas-preprocessor.pl for compatibility testing
AC_ARG_WITH([gas-preprocessor],
AC_HELP_STRING([--with-gas-preprocessor],[Force using gas-preprocessor.pl on ARM.]))
if test "x${with_gas_preprocessor}" = "xyes"; then
case $host_os in
darwin*)
CCAS="gas-preprocessor.pl -fix-unreq $CC"
;;
*)
CCAS="gas-preprocessor.pl -no-fix-unreq $CC"
;;
esac
AC_SUBST([CCAS])
fi
# SIMD is optional
AC_ARG_WITH([simd],
AC_HELP_STRING([--without-simd],[Omit SIMD extensions.]))
if test "x${with_simd}" != "xno"; then
# Check if we're on a supported CPU
AC_MSG_CHECKING([if we have SIMD optimisations for cpu type])
case "$host_cpu" in
x86_64 | amd64)
AC_MSG_RESULT([yes (x86_64)])
AC_PROG_NASM
simd_arch=x86_64
;;
i*86 | x86 | ia32)
AC_MSG_RESULT([yes (i386)])
AC_PROG_NASM
simd_arch=i386
;;
arm*)
AC_MSG_RESULT([yes (arm)])
AC_MSG_CHECKING([if the assembler is GNU-compatible and can be used])
AC_CHECK_COMPATIBLE_ARM_ASSEMBLER_IFELSE(
[AC_MSG_RESULT([yes])
simd_arch=arm],
[AC_MSG_RESULT([no])
with_simd=no
AC_MSG_WARN([SIMD support can't be enabled. Performance will suffer.])])
;;
*)
AC_MSG_RESULT([no ("$host_cpu")])
AC_MSG_WARN([SIMD support not available for this CPU. Performance will suffer.])
with_simd=no;
;;
esac
if test "x${with_simd}" != "xno"; then
AC_DEFINE([WITH_SIMD], [1], [Use accelerated SIMD routines.])
fi
fi
AM_CONDITIONAL([WITH_SIMD], [test "x$with_simd" != "xno"])
AM_CONDITIONAL([WITH_SSE_FLOAT_DCT], [test "x$simd_arch" = "xx86_64" -o "x$simd_arch" = "xi386"])
AM_CONDITIONAL([SIMD_I386], [test "x$simd_arch" = "xi386"])
AM_CONDITIONAL([SIMD_X86_64], [test "x$simd_arch" = "xx86_64"])
AM_CONDITIONAL([SIMD_ARM], [test "x$simd_arch" = "xarm"])
AM_CONDITIONAL([X86_64], [test "x$host_cpu" = "xx86_64" -o "x$host_cpu" = "xamd64"])
case "$host_cpu" in
x86_64)
RPMARCH=x86_64
DEBARCH=amd64
;;
i*86 | x86 | ia32)
RPMARCH=i386
DEBARCH=i386
;;
esac
AC_SUBST(RPMARCH)
AC_SUBST(DEBARCH)
AC_SUBST(BUILD)
AC_DEFINE_UNQUOTED([BUILD], "$BUILD", [Build number])
# jconfig.h is the file we use, but we have another before that to
# fool autoheader. the reason is that we include this header in our
# API headers, which can screw things up for users of the lib.
# jconfig.h is a minimal version that allows this package to be built
AC_CONFIG_HEADERS([config.h])
AC_CONFIG_HEADERS([jconfig.h])
AC_CONFIG_FILES([pkgscripts/libjpeg-turbo.spec:release/libjpeg-turbo.spec.in])
AC_CONFIG_FILES([pkgscripts/makecygwinpkg:release/makecygwinpkg.in])
AC_CONFIG_FILES([pkgscripts/makedpkg:release/makedpkg.in])
AC_CONFIG_FILES([pkgscripts/makemacpkg:release/makemacpkg.in])
AC_CONFIG_FILES([pkgscripts/Description.plist:release/Description.plist.in])
AC_CONFIG_FILES([pkgscripts/Info.plist:release/Info.plist.in])
AC_CONFIG_FILES([pkgscripts/uninstall:release/uninstall.in])
AC_CONFIG_FILES([pkgscripts/makesunpkg:release/makesunpkg.in])
AC_CONFIG_FILES([pkgscripts/pkginfo:release/pkginfo.in])
AC_CONFIG_FILES([libjpeg.map])
AC_CONFIG_FILES([Makefile simd/Makefile])
AC_CONFIG_FILES([java/Makefile])
AC_OUTPUT

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libjpeg-turbo (1.1.90-1inaror6) unreleased; urgency=low
* sync to change 691
* 690 NEON-accelerated slow integer inverse DCT
* 691 Improve the performance of YCbCr to RGB conversion on ARM
-- Tom Gall <tom.gall@linaro.org> Thu, 25 Aug 2011 18:38:04 +0000
libjpeg-turbo (1.1.90-1inaro6) natty; urgency=low
* Release
* sync to svn change 689
-- Tom Gall <tom.gall@linaro.org> Tue, 16 Aug 2011 22:58:35 +0000
libjpeg-turbo (1.1.1-1inaro5) unreleased; urgency=low
* Merge in 1.1.90 upstream code
-- Tom Gall <tom.gall@linaro.org> Mon, 15 Aug 2011 23:34:51 +0000
libjpeg-turbo (1.1.1-1inaro4) natty; urgency=low
* add libjpeg-turbo-progs.* to handle collision with libjpeg-8
* add dpkg-dev to Pre-Depends so multi-host works during builds
-- Tom Gall <tom.gall@linaro.org> Mon, 01 Aug 2011 18:48:55 +0000
libjpeg-turbo (1.1.1-1inaro3) natty; urgency=low
* fix divert to correctly move libjpeg.so*
* use multiarch
* change location of upstream git tree
-- Tom Gall <tom.gall@linaro.org> Thu, 28 Jul 2011 04:34:05 +0000
libjpeg-turbo (1.1.1-1inaro2) natty; urgency=low
* release
* add timestamp code to cjpeg.c
* default cjpeg.c and djpeg.c timestamp code to off
-- Tom Gall <tom.gall@linaro.org> Mon, 11 Jul 2011 20:32:23 +0000
libjpeg-turbo (1.1.1-0inaro1) natty; urgency=low
* rebase to 1.1.1
* include cross build changes from Michael Edwards
* add assembler and compiler options for SIMD_ARM_NEON
-- Tom Gall <tom.gall@linaro.org> Tue, 05 Jul 2011 21:20:43 +0000
libjpeg-turbo (1.1.0-0inaro2) natty; urgency=low
* Package current git, dated 05262011
-- <tom.gall@linaro.org> Thu, 26 May 2011 20:23:01 +0000
libjpeg-turbo (1.1.0-0linaro1) natty; urgency=low
* Change name of built packages to libjpeg-turbo62 and libjpeg-turbo-progs
* fix dpkg-divert usage
* Don't bother to install libjpegturbo.so
* via Steve Langasek, fix use of strh with it ne for thumb2 gcc4.5 compat
-- Tom Gall <tom.gall@linaro.org> Fri, 04 Mar 2011 22:51:19 -0600
libjpeg-turbo (1.1.0-0linaro0) natty; urgency=low
* Package for Linaro
-- Tom Gall <tom.gall@linaro.org> Mon, 17 Jan 2011 11:11:05 -0600

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9

34
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Source: libjpeg-turbo
Priority: extra
Maintainer: Linaro Developers <linaro-dev@linaro.org>
Uploaders: Tom Gall <tom.gall@linaro.org>
Build-Depends: debhelper (>= 8.1.2ubuntu2), dh-autoreconf, nasm [amd64 i386]
Standards-Version: 3.9.1
Section: libs
Vcs-Git: git://git.linaro.org/people/tomgall/libjpeg-turbo/libjpeg-turbo.git
Package: libjpeg-turbo62
Section: libs
Architecture: any
Multi-Arch: same
Depends: ${shlibs:Depends}, ${misc:Depends}
Pre-Depends: dpkg-dev, ${misc:Pre-Depends}
Replaces: libjpeg62
Description: The Independent JPEG Group's JPEG runtime library
The Independen`t JPEG Group's JPEG library is a library for handling
JPEG files.
This variation is from the meego project which includes further
optimizations.
.
This package contains the shared library.
Package: libjpeg-turbo-progs
Architecture: any
Description: Programs for manipulating JPEG files
This package contains programs for manipulating JPEG files:
cjpeg/djpeg: convert to/from the JPEG file format
rdjpgcom/wrjpgcom: read/write comments in JPEG files
jpegtran: lossless transformations of JPEG files
jpegexiforient/exifautotran: manipulate EXIF orientation tag
Depends: ${shlibs:Depends}, ${misc:Depends}
Pre-Depends: libjpeg-progs, dpkg-dev, ${misc:Pre-Depends}

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Format-Specification: http://svn.debian.org/wsvn/dep/web/deps/dep5.mdwn?op=file&rev=135
Name: libjpeg-turbo
Source: git://gitorious.org/meego-image-editor/libjpeg-turbo
Files: *
Copyright: 1999-2006 MIYASAKA Masaru
2004 Landmark Graphics Corporation
2005-2007 Sun Microsystems, Inc.
2009 Pierre Ossman for Cendio AB
2009-2010 D. R. Commander
2010 Thomas G. Lane, Guido Vollbeding
2009, Thomas G. Lane, Guido Vollbeding
1998, Thomas G. Lane
2010 Nokia Corporation
License: JPEG
In plain English:
.
1. We don't promise that this software works. (But if you find any bugs,
please let us know!)
2. You can use this software for whatever you want. You don't have to pay us.
3. You may not pretend that you wrote this software. If you use it in a
program, you must acknowledge somewhere in your documentation that
you've used the IJG code.
.
In legalese:
.
The authors make NO WARRANTY or representation, either express or implied,
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) 1991-2010, Thomas G. Lane, Guido Vollbeding.
All Rights Reserved except as specified below.
.
Permission is hereby granted to use, copy, modify, and distribute this
software (or portions thereof) for any purpose, without fee, subject to these
conditions:
(1) If any part of the source code for this software is distributed, then this
README file must be included, with this copyright and no-warranty notice
unaltered; and any additions, deletions, or changes to the original files
must be clearly indicated in accompanying documentation.
(2) If only executable code is distributed, then the accompanying
documentation must state that "this software is based in part on the work of
the Independent JPEG Group".
(3) Permission for use of this software is granted only if the user accepts
full responsibility for any undesirable consequences; the authors accept
NO LIABILITY for damages of any kind.
.
These conditions apply to any software derived from or based on the IJG code,
not just to the unmodified library. If you use our work, you ought to
acknowledge us.
.
Permission is NOT granted for the use of any IJG author's name or company name
in advertising or publicity relating to this software or products derived from
it. This software may be referred to only as "the Independent JPEG Group's
software".
.
We specifically permit and encourage the use of this software as the basis of
commercial products, provided that all warranty or liability claims are
assumed by the product vendor.
Files: bmp.c, bmp.h, jchuff.ci, jdhuff.*, jpegut.c, jpgtest.cxx, rrtimer.h, rrutil.h, turbojpeg.h, turbojpegl.c
Copyright: 1998-2005 Julian Smart, Robert Roebling et al
License: wxWindows
.
wxWindows Library Licence, Version 3.1
======================================
.
Copyright (C) 1998-2005 Julian Smart, Robert Roebling et al
.
Everyone is permitted to copy and distribute verbatim copies
of this licence document, but changing it is not allowed.
.
WXWINDOWS LIBRARY LICENCE
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
.
This library is free software; you can redistribute it and/or modify it
under the terms of the GNU Library General Public Licence as published by
the Free Software Foundation; either version 2 of the Licence, or (at
your option) any later version.
.
This library 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 Library
General Public Licence for more details.
.
You should have received a copy of the GNU Library General Public Licence
along with this software, usually in a file named COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
Boston, MA 02110-1301 USA
.
EXCEPTION NOTICE
.
1. As a special exception, the copyright holders of this library give
permission for additional uses of the text contained in this release of
the library as licenced under the wxWindows Library Licence, applying
either version 3.1 of the Licence, or (at your option) any later version of
the Licence as published by the copyright holders of version
3.1 of the Licence document.
.
2. The exception is that you may use, copy, link, modify and distribute
under your own terms, binary object code versions of works based
on the Library.
.
3. If you copy code from files distributed under the terms of the GNU
General Public Licence or the GNU Library General Public Licence into a
copy of this library, as this licence permits, the exception does not
apply to the code that you add in this way. To avoid misleading anyone as
to the status of such modified files, you must delete this exception
notice from such code and/or adjust the licensing conditions notice
accordingly.
.
4. If you write modifications of your own for this library, it is your
choice whether to permit this exception to apply to your modifications.
If you do not wish that, you must delete the exception notice from such
code and/or adjust the licensing conditions notice accordingly.
Files: debian/*
Copyright: 2010 Linaro Limited
License: LGPL-2.1
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License (LGPL) as published by the Free Software Foundation;
either version 2 of the License, or (at your option) any later
version.
.
This library 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
Library General Public License for more details.
.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
.
On Debian systems, the complete text of the GNU Library General Public
License, version 2, can be found in /usr/share/common-licenses/LGPL-2.1.

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libjpeg.txt
README
README-turbo.txt
structure.txt

2
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usr/bin
usr/share/man/*

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#!/bin/sh
set -e
HOST_MULTIARCH=`dpkg-architecture -qDEB_HOST_MULTIARCH`
if [ remove = "$1" -o abort-install = "$1" -o disappear = "$1" ];
then
dpkg-divert --package libjpeg-turbo-progs --rename \
--remove /usr/share/man/man1/wrjpgcom.1.gz
dpkg-divert --package libjpeg-turbo-progs --rename \
--remove /usr/share/man/man1/cjpeg.1.gz
dpkg-divert --package libjpeg-turbo-progs --rename \
--remove /usr/share/man/man1/djpeg.1.gz
dpkg-divert --package libjpeg-turbo-progs --rename \
--remove /usr/share/man/man1/rdjpgcom.1.gz
dpkg-divert --package libjpeg-turbo-progs --rename \
--remove /usr/share/man/man1/jpegtran.1.gz
rmdir /usr/share/man/libjpeg-progs-divert
dpkg-divert --package libjpeg-turbo-progs --rename \
--remove /usr/bin/rdjpgcom
dpkg-divert --package libjpeg-turbo-progs --rename \
--remove /usr/bin/wrjpgcom
dpkg-divert --package libjpeg-turbo-progs --rename \
--remove /usr/bin/jpegtran
dpkg-divert --package libjpeg-turbo-progs --rename \
--remove /usr/bin/cjpeg
dpkg-divert --package libjpeg-turbo-progs --rename \
--remove /usr/bin/djpeg
rmdir /usr/bin/libjpeg-progs-divert
fi
#DEBHELPER#

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#!/bin/sh
set -e
HOST_MULTIARCH=`dpkg-architecture -qDEB_HOST_MULTIARCH`
if [ install = "$1" ] || dpkg --compare-versions "$2" lt 1.1.1-1linaro3; then
if [ ! -d /usr/share/man/libjpeg-progs-divert ]
then
mkdir -p /usr/share/man/libjpeg-progs-divert
fi
dpkg-divert --package libjpeg-turbo-progs --rename --divert /usr/share/man/libjpeg-progs-divert/wrjpgcom.1.gz \
--add /usr/share/man/man1/wrjpgcom.1.gz
dpkg-divert --package libjpeg-turbo-progs --rename --divert /usr/share/man/libjpeg-progs-divert/cjpeg.1.gz \
--add /usr/share/man/man1/cjpeg.1.gz
dpkg-divert --package libjpeg-turbo-progs --rename --divert /usr/share/man/libjpeg-progs-divert/djpeg.1.gz \
--add /usr/share/man/man1/djpeg.1.gz
dpkg-divert --package libjpeg-turbo-progs --rename --divert /usr/share/man/libjpeg-progs-divert/rdjpgcom.1.gz \
--add /usr/share/man/man1/rdjpgcom.1.gz
dpkg-divert --package libjpeg-turbo-progs --rename --divert /usr/share/man/libjpeg-progs-divert/jpegtran.1.gz \
--add /usr/share/man/man1/jpegtran.1.gz
if [ ! -d /usr/bin/libjpeg-progs-divert ]
then
mkdir -p /usr/bin/libjpeg-progs-divert
fi
dpkg-divert --package libjpeg-turbo-progs --rename --divert /usr/bin/libjpeg-progs-divert/rdjpgcom \
--add /usr/bin/rdjpgcom
dpkg-divert --package libjpeg-turbo-progs --rename --divert /usr/bin/libjpeg-progs-divert/wrjpgcom \
--add /usr/bin/wrjpgcom
dpkg-divert --package libjpeg-turbo-progs --rename --divert /usr/bin/libjpeg-progs-divert/jpegtranm \
--add /usr/bin/jpegtran
dpkg-divert --package libjpeg-turbo-progs --rename --divert /usr/bin/libjpeg-progs-divert/cjpeg \
--add /usr/bin/cjpeg
dpkg-divert --package libjpeg-turbo-progs --rename --divert /usr/bin/libjpeg-progs-divert/djpeg \
--add /usr/bin/djpeg
fi
#DEBHELPER#

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usr/lib/*/libjpeg.so.62*
usr/lib/*/libturbojpeg.so*

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# yes, we specifically want linkers to depends on the standard libjpeg name
libturbojpeg62: shlibs-declares-dependency-on-other-package libjpeg62 (>=6b1)

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#!/bin/sh
set -e
HOST_MULTIARCH=`dpkg-architecture -qDEB_HOST_MULTIARCH`
if [ remove = "$1" -o abort-install = "$1" -o disappear = "$1" ];
then
dpkg-divert --package libjpeg-turbo62 --rename \
--remove /usr/lib/$HOST_MULTIARCH/libjpeg.so.62.0.0
dpkg-divert --package libjpeg-turbo62 --rename \
--remove /usr/lib/$HOST_MULTIARCH/libjpeg.so.62
rmdir /usr/lib/libjpeg-divert
fi
#DEBHELPER#

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#!/bin/sh
set -e
HOST_MULTIARCH=`dpkg-architecture -qDEB_HOST_MULTIARCH`
if [ install = "$1" ] || dpkg --compare-versions "$2" lt 1.1.0-0linaro2; then
if [ ! -d /usr/lib/libjpeg-divert ]
then
mkdir -p /usr/lib/libjpeg-divert
fi
dpkg-divert --package libjpeg-turbo62 --rename --divert /usr/lib/libjpeg-divert/libjpeg.so.62.0.0 \
--add /usr/lib/$HOST_MULTIARCH/libjpeg.so.62.0.0
dpkg-divert --package libjpeg-turbo62 --rename --divert /usr/lib/libjpeg-divert/libjpeg.so.62 \
--add /usr/lib/$HOST_MULTIARCH/libjpeg.so.62
fi
#DEBHELPER#

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libjpeg 62 libjpeg62 (>=6b1)

3508
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debian-changes-1.1.1-1inaro2

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#!/usr/bin/make -f
# -*- makefile -*-
# Sample debian/rules that uses debhelper.
# This file was originally written by Joey Hess and Craig Small.
# As a special exception, when this file is copied by dh-make into a
# dh-make output file, you may use that output file without restriction.
# This special exception was added by Craig Small in version 0.37 of dh-make.
# Uncomment this to turn on verbose mode.
#export DH_VERBOSE=1
%:
dh $@ --with autoreconf
override_dh_installchangelogs:
dh_installchangelogs change.log
override_dh_test:
override_dh_auto_test:

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3.0 (quilt)

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.TH DJPEG 1 "11 October 2010"
.SH NAME
djpeg \- decompress a JPEG file to an image file
.SH SYNOPSIS
.B djpeg
[
.I options
]
[
.I filename
]
.LP
.SH DESCRIPTION
.LP
.B djpeg
decompresses the named JPEG file, or the standard input if no file is named,
and produces an image file on the standard output. PBMPLUS (PPM/PGM), BMP,
GIF, Targa, or RLE (Utah Raster Toolkit) output format can be selected.
(RLE is supported only if the URT library is available.)
.SH OPTIONS
All switch names may be abbreviated; for example,
.B \-grayscale
may be written
.B \-gray
or
.BR \-gr .
Most of the "basic" switches can be abbreviated to as little as one letter.
Upper and lower case are equivalent (thus
.B \-BMP
is the same as
.BR \-bmp ).
British spellings are also accepted (e.g.,
.BR \-greyscale ),
though for brevity these are not mentioned below.
.PP
The basic switches are:
.TP
.BI \-colors " N"
Reduce image to at most N colors. This reduces the number of colors used in
the output image, so that it can be displayed on a colormapped display or
stored in a colormapped file format. For example, if you have an 8-bit
display, you'd need to reduce to 256 or fewer colors.
.TP
.BI \-quantize " N"
Same as
.BR \-colors .
.B \-colors
is the recommended name,
.B \-quantize
is provided only for backwards compatibility.
.TP
.B \-fast
Select recommended processing options for fast, low quality output. (The
default options are chosen for highest quality output.) Currently, this is
equivalent to \fB\-dct fast \-nosmooth \-onepass \-dither ordered\fR.
.TP
.B \-grayscale
Force gray-scale output even if JPEG file is color. Useful for viewing on
monochrome displays; also,
.B djpeg
runs noticeably faster in this mode.
.TP
.BI \-scale " M/N"
Scale the output image by a factor M/N. Currently the scale factor must be
1/1, 1/2, 1/4, or 1/8. Scaling is handy if the image is larger than your
screen; also,
.B djpeg
runs much faster when scaling down the output.
.TP
.B \-bmp
Select BMP output format (Windows flavor). 8-bit colormapped format is
emitted if
.B \-colors
or
.B \-grayscale
is specified, or if the JPEG file is gray-scale; otherwise, 24-bit full-color
format is emitted.
.TP
.B \-gif
Select GIF output format. Since GIF does not support more than 256 colors,
.B \-colors 256
is assumed (unless you specify a smaller number of colors).
.TP
.B \-os2
Select BMP output format (OS/2 1.x flavor). 8-bit colormapped format is
emitted if
.B \-colors
or
.B \-grayscale
is specified, or if the JPEG file is gray-scale; otherwise, 24-bit full-color
format is emitted.
.TP
.B \-pnm
Select PBMPLUS (PPM/PGM) output format (this is the default format).
PGM is emitted if the JPEG file is gray-scale or if
.B \-grayscale
is specified; otherwise PPM is emitted.
.TP
.B \-rle
Select RLE output format. (Requires URT library.)
.TP
.B \-targa
Select Targa output format. Gray-scale format is emitted if the JPEG file is
gray-scale or if
.B \-grayscale
is specified; otherwise, colormapped format is emitted if
.B \-colors
is specified; otherwise, 24-bit full-color format is emitted.
.PP
Switches for advanced users:
.TP
.B \-dct int
Use integer DCT method (default).
.TP
.B \-dct fast
Use fast integer DCT (less accurate).
.TP
.B \-dct float
Use floating-point DCT method.
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.
.TP
.B \-dither ordered
Use ordered dithering in color quantization.
.TP
.B \-dither none
Do not use dithering in color quantization.
By default, Floyd-Steinberg dithering is applied when quantizing colors; this
is slow but usually produces the best results. Ordered dither is a compromise
between speed and quality; no dithering is fast but usually looks awful. Note
that these switches have no effect unless color quantization is being done.
Ordered dither is only available in
.B \-onepass
mode.
.TP
.BI \-map " file"
Quantize to the colors used in the specified image file. This is useful for
producing multiple files with identical color maps, or for forcing a
predefined set of colors to be used. The
.I file
must be a GIF or PPM file. This option overrides
.B \-colors
and
.BR \-onepass .
.TP
.B \-nosmooth
Use a faster, lower-quality upsampling routine.
.TP
.B \-onepass
Use one-pass instead of two-pass color quantization. The one-pass method is
faster and needs less memory, but it produces a lower-quality image.
.B \-onepass
is ignored unless you also say
.B \-colors
.IR N .
Also, the one-pass method is always used for gray-scale output (the two-pass
method is no improvement then).
.TP
.BI \-maxmemory " N"
Set limit for amount of memory to use in processing large images. Value is
in thousands of bytes, or millions of bytes if "M" is attached to the
number. For example,
.B \-max 4m
selects 4000000 bytes. If more space is needed, temporary files will be used.
.TP
.BI \-outfile " name"
Send output image to the named file, not to standard output.
.TP
.B \-verbose
Enable debug printout. More
.BR \-v 's
give more output. Also, version information is printed at startup.
.TP
.B \-debug
Same as
.BR \-verbose .
.SH EXAMPLES
.LP
This example decompresses the JPEG file foo.jpg, quantizes it to
256 colors, and saves the output in 8-bit BMP format in foo.bmp:
.IP
.B djpeg \-colors 256 \-bmp
.I foo.jpg
.B >
.I foo.bmp
.SH HINTS
To get a quick preview of an image, use the
.B \-grayscale
and/or
.B \-scale
switches.
.B \-grayscale \-scale 1/8
is the fastest case.
.PP
Several options are available that trade off image quality to gain speed.
.B \-fast
turns on the recommended settings.
.PP
.B \-dct fast
and/or
.B \-nosmooth
gain speed at a small sacrifice in quality.
When producing a color-quantized image,
.B \-onepass \-dither ordered
is fast but much lower quality than the default behavior.
.B \-dither none
may give acceptable results in two-pass mode, but is seldom tolerable in
one-pass mode.
.PP
If you are fortunate enough to have very fast floating point hardware,
\fB\-dct float\fR may be even faster than \fB\-dct fast\fR. But on most
machines \fB\-dct float\fR is slower than \fB\-dct int\fR; in this case it is
not worth using, because its theoretical accuracy advantage is too small to be
significant in practice.
.SH ENVIRONMENT
.TP
.B JPEGMEM
If this environment variable is set, its value is the default memory limit.
The value is specified as described for the
.B \-maxmemory
switch.
.B JPEGMEM
overrides the default value specified when the program was compiled, and
itself is overridden by an explicit
.BR \-maxmemory .
.SH SEE ALSO
.BR cjpeg (1),
.BR jpegtran (1),
.BR rdjpgcom (1),
.BR wrjpgcom (1)
.br
.BR ppm (5),
.BR pgm (5)
.br
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
.SH BUGS
To avoid the Unisys LZW patent,
.B djpeg
produces uncompressed GIF files. These are larger than they should be, but
are readable by standard GIF decoders.

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/*
* djpeg.c
*
* Copyright (C) 1991-1997, Thomas G. Lane.
* Copyright (C) 2010-2011, D. R. Commander.
* 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]
* 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).
* The second style is convenient on Unix but is unhelpful on systems that
* 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
* 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 "config.h"
#include <ctype.h> /* to declare isprint() */
#ifdef USE_CCOMMAND /* command-line reader for Macintosh */
#ifdef __MWERKS__
#include <SIOUX.h> /* Metrowerks needs this */
#include <console.h> /* ... and this */
#endif
#ifdef THINK_C
#include <console.h> /* Think declares it here */
#endif
#endif
/* Create the add-on message string table. */
#define JMESSAGE(code,string) string ,
static const char * const cdjpeg_message_table[] = {
#include "cderror.h"
NULL
};
/*
* This list defines the known output image formats
* (not all of which need be supported by a given version).
* You can change the default output format by defining DEFAULT_FMT;
* indeed, you had better do so if you undefine PPM_SUPPORTED.
*/
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 */
} IMAGE_FORMATS;
#ifndef DEFAULT_FMT /* so can override from CFLAGS in Makefile */
#define DEFAULT_FMT FMT_PPM
#endif
static IMAGE_FORMATS requested_fmt;
/*
* Argument-parsing code.
* The switch parser is designed to be useful with DOS-style command line
* syntax, ie, intermixed switches and file names, where only the switches
* to the left of a given file name affect processing of that file.
* The main program in this file doesn't actually use this capability...
*/
static const char * progname; /* program name for error messages */
static char * outfilename; /* for -outfile switch */
LOCAL(void)
usage (void)
/* complain about bad command line */
{
fprintf(stderr, "usage: %s [switches] ", progname);
#ifdef TWO_FILE_COMMANDLINE
fprintf(stderr, "inputfile outputfile\n");
#else
fprintf(stderr, "[inputfile]\n");
#endif
fprintf(stderr, "Switches (names may be abbreviated):\n");
fprintf(stderr, " -colors N Reduce image to no more than N colors\n");
fprintf(stderr, " -fast Fast, low-quality processing\n");
fprintf(stderr, " -grayscale Force grayscale output\n");
fprintf(stderr, " -rgb Force RGB 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)" : ""));
#endif
#ifdef GIF_SUPPORTED
fprintf(stderr, " -gif Select GIF output format%s\n",
(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)" : ""));
#endif
#ifdef PPM_SUPPORTED
fprintf(stderr, " -pnm Select PBMPLUS (PPM/PGM) output format%s\n",
(DEFAULT_FMT == FMT_PPM ? " (default)" : ""));
#endif
#ifdef RLE_SUPPORTED
fprintf(stderr, " -rle Select Utah RLE output format%s\n",
(DEFAULT_FMT == FMT_RLE ? " (default)" : ""));
#endif
#ifdef TARGA_SUPPORTED
fprintf(stderr, " -targa Select Targa output format%s\n",
(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)" : ""));
#endif
#ifdef DCT_IFAST_SUPPORTED
fprintf(stderr, " -dct fast Use fast integer DCT (less accurate)%s\n",
(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)" : ""));
#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");
#ifdef QUANT_2PASS_SUPPORTED
fprintf(stderr, " -map FILE Map to colors used in named image file\n");
#endif
fprintf(stderr, " -nosmooth Don't use high-quality upsampling\n");
#ifdef QUANT_1PASS_SUPPORTED
fprintf(stderr, " -onepass Use 1-pass quantization (fast, low quality)\n");
#endif
fprintf(stderr, " -maxmemory N Maximum memory to use (in kbytes)\n");
fprintf(stderr, " -outfile name Specify name for output file\n");
fprintf(stderr, " -verbose or -debug Emit debug output\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 optional switches.
* Returns argv[] index of first file-name argument (== argc if none).
* Any file names with indexes <= last_file_arg_seen are ignored;
* they have presumably been processed in a previous iteration.
* (Pass 0 for last_file_arg_seen on the first or only iteration.)
* for_real is FALSE on the first (dummy) pass; we may skip any expensive
* processing.
*/
{
int argn;
char * arg;
/* Set up default JPEG parameters. */
requested_fmt = DEFAULT_FMT; /* set default output file format */
outfilename = NULL;
cinfo->err->trace_level = 0;
/* Scan command line options, adjust parameters */
for (argn = 1; argn < argc; argn++) {
arg = argv[argn];
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 */
}
break; /* else done parsing switches */
}
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)) {
/* Do color quantization. */
int val;
if (++argn >= argc) /* advance to next argument */
usage();
if (sscanf(argv[argn], "%d", &val) != 1)
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 (keymatch(argv[argn], "int", 1)) {
cinfo->dct_method = JDCT_ISLOW;
} else if (keymatch(argv[argn], "fast", 2)) {
cinfo->dct_method = JDCT_IFAST;
} else if (keymatch(argv[argn], "float", 2)) {
cinfo->dct_method = JDCT_FLOAT;
} else
usage();
} else if (keymatch(arg, "dither", 2)) {
/* Select dithering algorithm. */
if (++argn >= argc) /* advance to next argument */
usage();
if (keymatch(argv[argn], "fs", 2)) {
cinfo->dither_mode = JDITHER_FS;
} else if (keymatch(argv[argn], "none", 2)) {
cinfo->dither_mode = JDITHER_NONE;
} else if (keymatch(argv[argn], "ordered", 2)) {
cinfo->dither_mode = JDITHER_ORDERED;
} else
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", LJTCOPYRIGHT);
fprintf(stderr, "Based on Independent JPEG Group's libjpeg, version %s\n%s\n\n",
JVERSION, JCOPYRIGHT);
printed_version = TRUE;
}
cinfo->err->trace_level++;
} else if (keymatch(arg, "fast", 1)) {
/* Select recommended processing options for quick-and-dirty output. */
cinfo->two_pass_quantize = FALSE;
cinfo->dither_mode = JDITHER_ORDERED;
if (! cinfo->quantize_colors) /* don't override an earlier -colors */
cinfo->desired_number_of_colors = 216;
cinfo->dct_method = JDCT_FASTEST;
cinfo->do_fancy_upsampling = FALSE;
} else if (keymatch(arg, "gif", 1)) {
/* GIF output format. */
requested_fmt = FMT_GIF;
} 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)) {
/* Force RGB output. */
cinfo->out_color_space = JCS_RGB;
} 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 ((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);
#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 (sscanf(argv[argn], "%ld%c", &lval, &ch) < 1)
usage();
if (ch == 'm' || ch == 'M')
lval *= 1000L;
cinfo->mem->max_memory_to_use = lval * 1000L;
} else if (keymatch(arg, "nosmooth", 3)) {
/* Suppress fancy upsampling */
cinfo->do_fancy_upsampling = FALSE;
} else if (keymatch(arg, "onepass", 3)) {
/* Use fast one-pass quantization. */
cinfo->two_pass_quantize = FALSE;
} else if (keymatch(arg, "os2", 3)) {
/* BMP output format (OS/2 flavor). */
requested_fmt = FMT_OS2;
} 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, "pnm", 1) || keymatch(arg, "ppm", 1)) {
/* PPM/PGM output format. */
requested_fmt = FMT_PPM;
} else if (keymatch(arg, "rle", 1)) {
/* RLE output format. */
requested_fmt = FMT_RLE;
} else if (keymatch(arg, "scale", 1)) {
/* Scale the output image by a fraction M/N. */
if (++argn >= argc) /* advance to next argument */
usage();
if (sscanf(argv[argn], "%d/%d",
&cinfo->scale_num, &cinfo->scale_denom) != 2)
usage();
} else if (keymatch(arg, "targa", 1)) {
/* Targa output format. */
requested_fmt = FMT_TARGA;
} else {
usage(); /* bogus switch */
}
}
return argn; /* return index of next arg (file name) */
}
/*
* Marker processor for COM and interesting APPn markers.
* This replaces the library's built-in processor, which just skips the marker.
* We want to print out the marker as text, to the extent possible.
* Note this code relies on a non-suspending data source.
*/
LOCAL(unsigned int)
jpeg_getc (j_decompress_ptr cinfo)
/* Read next byte */
{
struct jpeg_source_mgr * datasrc = cinfo->src;
if (datasrc->bytes_in_buffer == 0) {
if (! (*datasrc->fill_input_buffer) (cinfo))
ERREXIT(cinfo, JERR_CANT_SUSPEND);
}
datasrc->bytes_in_buffer--;
return GETJOCTET(*datasrc->next_input_byte++);
}
METHODDEF(boolean)
print_text_marker (j_decompress_ptr cinfo)
{
boolean traceit = (cinfo->err->trace_level >= 1);
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 */
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, "APP%d, length %ld:\n",
cinfo->unread_marker - JPEG_APP0, (long) length);
}
while (--length >= 0) {
ch = jpeg_getc(cinfo);
if (traceit) {
/* Emit the character in a readable form.
* Nonprintables are converted to \nnn form,
* while \ is converted to \\.
* Newlines in CR, CR/LF, or LF form will be printed as one newline.
*/
if (ch == '\r') {
fprintf(stderr, "\n");
} else if (ch == '\n') {
if (lastch != '\r')
fprintf(stderr, "\n");
} else if (ch == '\\') {
fprintf(stderr, "\\\\");
} else if (isprint(ch)) {
putc(ch, stderr);
} else {
fprintf(stderr, "\\%03o", ch);
}
lastch = ch;
}
}
if (traceit)
fprintf(stderr, "\n");
return TRUE;
}
/*
* The main program.
*/
int
main (int argc, char **argv)
{
struct jpeg_decompress_struct cinfo;
struct jpeg_error_mgr jerr;
#ifdef PROGRESS_REPORT
struct cdjpeg_progress_mgr progress;
#endif
int file_index;
djpeg_dest_ptr dest_mgr = NULL;
FILE * input_file;
FILE * output_file;
JDIMENSION num_scanlines;
/* On Mac, fetch a command line. */
#ifdef USE_CCOMMAND
argc = ccommand(&argv);
#endif
progname = argv[0];
if (progname == NULL || progname[0] == 0)
progname = "djpeg"; /* in case C library doesn't provide it */
/* Initialize the JPEG decompression object with default error handling. */
cinfo.err = jpeg_std_error(&jerr);
jpeg_create_decompress(&cinfo);
/* Add some application-specific error messages (from cderror.h) */
jerr.addon_message_table = cdjpeg_message_table;
jerr.first_addon_message = JMSG_FIRSTADDONCODE;
jerr.last_addon_message = JMSG_LASTADDONCODE;
/* Insert custom marker processor for COM and APP12.
* 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).
*/
jpeg_set_marker_processor(&cinfo, JPEG_COM, print_text_marker);
jpeg_set_marker_processor(&cinfo, JPEG_APP0+12, print_text_marker);
/* Now safe to enable signal catcher. */
#ifdef NEED_SIGNAL_CATCHER
enable_signal_catcher((j_common_ptr) &cinfo);
#endif
/* Scan command line to find file names. */
/* It is convenient to use just one switch-parsing routine, but the switch
* values read here are ignored; we will rescan the switches after opening
* the input file.
* (Exception: tracing level set here controls verbosity for COM markers
* found during jpeg_read_header...)
*/
file_index = parse_switches(&cinfo, argc, argv, 0, FALSE);
#ifdef TWO_FILE_COMMANDLINE
/* 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) {
fprintf(stderr, "%s: only one input file\n", progname);
usage();
}
#endif /* TWO_FILE_COMMANDLINE */
/* Open the input file. */
if (file_index < argc) {
if ((input_file = fopen(argv[file_index], READ_BINARY)) == NULL) {
fprintf(stderr, "%s: can't open %s\n", progname, argv[file_index]);
exit(EXIT_FAILURE);
}
} else {
/* default input file is stdin */
input_file = read_stdin();
}
/* Open the output file. */
if (outfilename != NULL) {
if ((output_file = fopen(outfilename, WRITE_BINARY)) == NULL) {
fprintf(stderr, "%s: can't open %s\n", progname, outfilename);
exit(EXIT_FAILURE);
}
} else {
/* default output file is stdout */
output_file = write_stdout();
}
#ifdef PROGRESS_REPORT
start_progress_monitor((j_common_ptr) &cinfo, &progress);
#endif
/* Specify data source for decompression */
jpeg_stdio_src(&cinfo, input_file);
/* Read file header, set default decompression parameters */
(void) jpeg_read_header(&cinfo, TRUE);
/* Adjust default decompression parameters by re-parsing the options */
file_index = parse_switches(&cinfo, argc, argv, 0, TRUE);
/* Initialize the output module now to let it override any crucial
* option settings (for instance, GIF wants to force color quantization).
*/
switch (requested_fmt) {
#ifdef BMP_SUPPORTED
case FMT_BMP:
dest_mgr = jinit_write_bmp(&cinfo, FALSE);
break;
case FMT_OS2:
dest_mgr = jinit_write_bmp(&cinfo, TRUE);
break;
#endif
#ifdef GIF_SUPPORTED
case FMT_GIF:
dest_mgr = jinit_write_gif(&cinfo);
break;
#endif
#ifdef PPM_SUPPORTED
case FMT_PPM:
dest_mgr = jinit_write_ppm(&cinfo);
break;
#endif
#ifdef RLE_SUPPORTED
case FMT_RLE:
dest_mgr = jinit_write_rle(&cinfo);
break;
#endif
#ifdef TARGA_SUPPORTED
case FMT_TARGA:
dest_mgr = jinit_write_targa(&cinfo);
break;
#endif
default:
ERREXIT(&cinfo, JERR_UNSUPPORTED_FORMAT);
break;
}
dest_mgr->output_file = output_file;
/* Start decompressor */
(void) jpeg_start_decompress(&cinfo);
/* 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);
}
#ifdef PROGRESS_REPORT
/* Hack: count final pass as done in case finish_output does an extra pass.
* The library won't have updated completed_passes.
*/
progress.pub.completed_passes = progress.pub.total_passes;
#endif
/* 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);
jpeg_destroy_decompress(&cinfo);
/* Close files, if we opened them */
if (input_file != stdin)
fclose(input_file);
if (output_file != stdout)
fclose(output_file);
#ifdef PROGRESS_REPORT
end_progress_monitor((j_common_ptr) &cinfo);
#endif
/* All done. */
exit(jerr.num_warnings ? EXIT_WARNING : EXIT_SUCCESS);
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="structtjscalingfactor.html#aefbcdf3e9e62274b2d312c695f133ce3">tjscalingfactor</a>
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&#160;<ul>
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($file =~ /$match/) && (push @files, $file);
($file =~ /\.svg/) && (push @files, $file);
($file =~ "navtree.js") && (push @files, $file);
}
closedir(D);
}
}
if ( ! @files ) {
print STDERR "Warning: No input files given and none found!\n";
}
foreach $f (@files)
{
if ( ! $quiet ) {
print "Editing: $f...\n";
}
$oldf = $f;
$f .= ".bak";
unless (rename $oldf,$f) {
print STDERR "Error: cannot rename file $oldf\n";
exit 1;
}
if (open(F,"<$f")) {
unless (open(G,">$oldf")) {
print STDERR "Error: opening file $oldf for writing\n";
exit 1;
}
if ($oldf ne "tree.js") {
while (<F>) {
s/doxygen\=\"([^ \"\:\t\>\<]*)\:([^ \"\t\>\<]*)\" (xlink:href|href|src)=\"\2/doxygen\=\"$1:$subst{$1}\" \3=\"$subst{$1}/g;
print G "$_";
}
}
else {
while (<F>) {
s/\"([^ \"\:\t\>\<]*)\:([^ \"\t\>\<]*)\", \"\2/\"$1:$subst{$1}\" ,\"$subst{$1}/g;
print G "$_";
}
}
}
else {
print STDERR "Warning file $f does not exist\n";
}
unlink $f;
}
sub usage {
print STDERR "Usage: installdox [options] [html-file [html-file ...]]\n";
print STDERR "Options:\n";
print STDERR " -l tagfile\@linkName tag file + URL or directory \n";
print STDERR " -q Quiet mode\n\n";
exit 1;
}

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<title>TurboJPEG: Modules</title>
<link href="tabs.css" rel="stylesheet" type="text/css"/>
<link href="search/search.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="search/search.js"></script>
<link href="doxygen.css" rel="stylesheet" type="text/css"/>
</head>
<body onload='searchBox.OnSelectItem(0);'>
<!-- Generated by Doxygen 1.7.4 -->
<script type="text/javascript"><!--
var searchBox = new SearchBox("searchBox", "search",false,'Search');
--></script>
<div id="top">
<div id="titlearea">
<table cellspacing="0" cellpadding="0">
<tbody>
<tr style="height: 56px;">
<td style="padding-left: 0.5em;">
<div id="projectname">TurboJPEG&#160;<span id="projectnumber">1.2</span></div>
</td>
</tr>
</tbody>
</table>
</div>
<div id="navrow1" class="tabs">
<ul class="tablist">
<li><a href="index.html"><span>Main&#160;Page</span></a></li>
<li class="current"><a href="modules.html"><span>Modules</span></a></li>
<li><a href="annotated.html"><span>Data&#160;Structures</span></a></li>
<li id="searchli">
<div id="MSearchBox" class="MSearchBoxInactive">
<span class="left">
<img id="MSearchSelect" src="search/mag_sel.png"
onmouseover="return searchBox.OnSearchSelectShow()"
onmouseout="return searchBox.OnSearchSelectHide()"
alt=""/>
<input type="text" id="MSearchField" value="Search" accesskey="S"
onfocus="searchBox.OnSearchFieldFocus(true)"
onblur="searchBox.OnSearchFieldFocus(false)"
onkeyup="searchBox.OnSearchFieldChange(event)"/>
</span><span class="right">
<a id="MSearchClose" href="javascript:searchBox.CloseResultsWindow()"><img id="MSearchCloseImg" border="0" src="search/close.png" alt=""/></a>
</span>
</div>
</li>
</ul>
</div>
</div>
<div class="header">
<div class="headertitle">
<div class="title">Modules</div> </div>
</div>
<div class="contents">
<div class="textblock">Here is a list of all modules:</div><ul>
<li><a class="el" href="group___turbo_j_p_e_g.html">TurboJPEG</a></li>
</ul>
</div>
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<div id="MSearchSelectWindow"
onmouseover="return searchBox.OnSearchSelectShow()"
onmouseout="return searchBox.OnSearchSelectHide()"
onkeydown="return searchBox.OnSearchSelectKey(event)">
<a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(0)"><span class="SelectionMark">&#160;</span>All</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(1)"><span class="SelectionMark">&#160;</span>Data Structures</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(2)"><span class="SelectionMark">&#160;</span>Variables</a></div>
<!-- iframe showing the search results (closed by default) -->
<div id="MSearchResultsWindow">
<iframe src="javascript:void(0)" frameborder="0"
name="MSearchResults" id="MSearchResults">
</iframe>
</div>
<hr class="footer"/><address class="footer"><small>Generated on Mon Jul 11 2011 22:02:02 for TurboJPEG by&#160;
<a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.7.4 </small></address>
</body>
</html>

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html><head><title></title>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<link rel="stylesheet" type="text/css" href="search.css"/>
<script type="text/javascript" src="search.js"></script>
</head>
<body class="SRPage">
<div id="SRIndex">
<div class="SRStatus" id="Loading">Loading...</div>
<div class="SRResult" id="SR_denom">
<div class="SREntry">
<a id="Item0" onkeydown="return searchResults.Nav(event,0)" onkeypress="return searchResults.Nav(event,0)" onkeyup="return searchResults.Nav(event,0)" class="SRSymbol" href="../structtjscalingfactor.html#aefbcdf3e9e62274b2d312c695f133ce3" target="_parent">denom</a>
<span class="SRScope">tjscalingfactor</span>
</div>
</div>
<div class="SRStatus" id="Searching">Searching...</div>
<div class="SRStatus" id="NoMatches">No Matches</div>
<script type="text/javascript"><!--
document.getElementById("Loading").style.display="none";
document.getElementById("NoMatches").style.display="none";
var searchResults = new SearchResults("searchResults");
searchResults.Search();
--></script>
</div>
</body>
</html>

26
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html><head><title></title>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<link rel="stylesheet" type="text/css" href="search.css"/>
<script type="text/javascript" src="search.js"></script>
</head>
<body class="SRPage">
<div id="SRIndex">
<div class="SRStatus" id="Loading">Loading...</div>
<div class="SRResult" id="SR_h">
<div class="SREntry">
<a id="Item0" onkeydown="return searchResults.Nav(event,0)" onkeypress="return searchResults.Nav(event,0)" onkeyup="return searchResults.Nav(event,0)" class="SRSymbol" href="../structtjregion.html#aecefc45a26f4d8b60dd4d825c1710115" target="_parent">h</a>
<span class="SRScope">tjregion</span>
</div>
</div>
<div class="SRStatus" id="Searching">Searching...</div>
<div class="SRStatus" id="NoMatches">No Matches</div>
<script type="text/javascript"><!--
document.getElementById("Loading").style.display="none";
document.getElementById("NoMatches").style.display="none";
var searchResults = new SearchResults("searchResults");
searchResults.Search();
--></script>
</div>
</body>
</html>

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html><head><title></title>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<link rel="stylesheet" type="text/css" href="search.css"/>
<script type="text/javascript" src="search.js"></script>
</head>
<body class="SRPage">
<div id="SRIndex">
<div class="SRStatus" id="Loading">Loading...</div>
<div class="SRResult" id="SR_num">
<div class="SREntry">
<a id="Item0" onkeydown="return searchResults.Nav(event,0)" onkeypress="return searchResults.Nav(event,0)" onkeyup="return searchResults.Nav(event,0)" class="SRSymbol" href="../structtjscalingfactor.html#a9b011e57f981ee23083e2c1aa5e640ec" target="_parent">num</a>
<span class="SRScope">tjscalingfactor</span>
</div>
</div>
<div class="SRStatus" id="Searching">Searching...</div>
<div class="SRStatus" id="NoMatches">No Matches</div>
<script type="text/javascript"><!--
document.getElementById("Loading").style.display="none";
document.getElementById("NoMatches").style.display="none";
var searchResults = new SearchResults("searchResults");
searchResults.Search();
--></script>
</div>
</body>
</html>

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html><head><title></title>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<link rel="stylesheet" type="text/css" href="search.css"/>
<script type="text/javascript" src="search.js"></script>
</head>
<body class="SRPage">
<div id="SRIndex">
<div class="SRStatus" id="Loading">Loading...</div>
<div class="SRResult" id="SR_op">
<div class="SREntry">
<a id="Item0" onkeydown="return searchResults.Nav(event,0)" onkeypress="return searchResults.Nav(event,0)" onkeyup="return searchResults.Nav(event,0)" class="SRSymbol" href="../structtjtransform.html#a2525aab4ba6978a1c273f74fef50e498" target="_parent">op</a>
<span class="SRScope">tjtransform</span>
</div>
</div>
<div class="SRResult" id="SR_options">
<div class="SREntry">
<a id="Item1" onkeydown="return searchResults.Nav(event,1)" onkeypress="return searchResults.Nav(event,1)" onkeyup="return searchResults.Nav(event,1)" class="SRSymbol" href="../structtjtransform.html#ac0e74655baa4402209a21e1ae481c8f6" target="_parent">options</a>
<span class="SRScope">tjtransform</span>
</div>
</div>
<div class="SRStatus" id="Searching">Searching...</div>
<div class="SRStatus" id="NoMatches">No Matches</div>
<script type="text/javascript"><!--
document.getElementById("Loading").style.display="none";
document.getElementById("NoMatches").style.display="none";
var searchResults = new SearchResults("searchResults");
searchResults.Search();
--></script>
</div>
</body>
</html>

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html><head><title></title>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<link rel="stylesheet" type="text/css" href="search.css"/>
<script type="text/javascript" src="search.js"></script>
</head>
<body class="SRPage">
<div id="SRIndex">
<div class="SRStatus" id="Loading">Loading...</div>
<div class="SRResult" id="SR_r">
<div class="SREntry">
<a id="Item0" onkeydown="return searchResults.Nav(event,0)" onkeypress="return searchResults.Nav(event,0)" onkeyup="return searchResults.Nav(event,0)" class="SRSymbol" href="../structtjtransform.html#ac324e5e442abec8a961e5bf219db12cf" target="_parent">r</a>
<span class="SRScope">tjtransform</span>
</div>
</div>
<div class="SRStatus" id="Searching">Searching...</div>
<div class="SRStatus" id="NoMatches">No Matches</div>
<script type="text/javascript"><!--
document.getElementById("Loading").style.display="none";
document.getElementById("NoMatches").style.display="none";
var searchResults = new SearchResults("searchResults");
searchResults.Search();
--></script>
</div>
</body>
</html>

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html><head><title></title>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<link rel="stylesheet" type="text/css" href="search.css"/>
<script type="text/javascript" src="search.js"></script>
</head>
<body class="SRPage">
<div id="SRIndex">
<div class="SRStatus" id="Loading">Loading...</div>
<div class="SRResult" id="SR_tjregion">
<div class="SREntry">
<a id="Item0" onkeydown="return searchResults.Nav(event,0)" onkeypress="return searchResults.Nav(event,0)" onkeyup="return searchResults.Nav(event,0)" class="SRSymbol" href="../structtjregion.html" target="_parent">tjregion</a>
</div>
</div>
<div class="SRResult" id="SR_tjscalingfactor">
<div class="SREntry">
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</div>
</div>
<div class="SRResult" id="SR_tjtransform">
<div class="SREntry">
<a id="Item2" onkeydown="return searchResults.Nav(event,2)" onkeypress="return searchResults.Nav(event,2)" onkeyup="return searchResults.Nav(event,2)" class="SRSymbol" href="../structtjtransform.html" target="_parent">tjtransform</a>
</div>
</div>
<div class="SRStatus" id="Searching">Searching...</div>
<div class="SRStatus" id="NoMatches">No Matches</div>
<script type="text/javascript"><!--
document.getElementById("Loading").style.display="none";
document.getElementById("NoMatches").style.display="none";
var searchResults = new SearchResults("searchResults");
searchResults.Search();
--></script>
</div>
</body>
</html>

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html><head><title></title>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<link rel="stylesheet" type="text/css" href="search.css"/>
<script type="text/javascript" src="search.js"></script>
</head>
<body class="SRPage">
<div id="SRIndex">
<div class="SRStatus" id="Loading">Loading...</div>
<div class="SRResult" id="SR_w">
<div class="SREntry">
<a id="Item0" onkeydown="return searchResults.Nav(event,0)" onkeypress="return searchResults.Nav(event,0)" onkeyup="return searchResults.Nav(event,0)" class="SRSymbol" href="../structtjregion.html#ab6eb73ceef584fc23c8c8097926dce42" target="_parent">w</a>
<span class="SRScope">tjregion</span>
</div>
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<div class="SRStatus" id="Searching">Searching...</div>
<div class="SRStatus" id="NoMatches">No Matches</div>
<script type="text/javascript"><!--
document.getElementById("Loading").style.display="none";
document.getElementById("NoMatches").style.display="none";
var searchResults = new SearchResults("searchResults");
searchResults.Search();
--></script>
</div>
</body>
</html>

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html><head><title></title>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<link rel="stylesheet" type="text/css" href="search.css"/>
<script type="text/javascript" src="search.js"></script>
</head>
<body class="SRPage">
<div id="SRIndex">
<div class="SRStatus" id="Loading">Loading...</div>
<div class="SRResult" id="SR_x">
<div class="SREntry">
<a id="Item0" onkeydown="return searchResults.Nav(event,0)" onkeypress="return searchResults.Nav(event,0)" onkeyup="return searchResults.Nav(event,0)" class="SRSymbol" href="../structtjregion.html#a4b6a37a93997091b26a75831fa291ad9" target="_parent">x</a>
<span class="SRScope">tjregion</span>
</div>
</div>
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<script type="text/javascript"><!--
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var searchResults = new SearchResults("searchResults");
searchResults.Search();
--></script>
</div>
</body>
</html>

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<link rel="stylesheet" type="text/css" href="search.css"/>
<script type="text/javascript" src="search.js"></script>
</head>
<body class="SRPage">
<div id="SRIndex">
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<div class="SRResult" id="SR_y">
<div class="SREntry">
<a id="Item0" onkeydown="return searchResults.Nav(event,0)" onkeypress="return searchResults.Nav(event,0)" onkeyup="return searchResults.Nav(event,0)" class="SRSymbol" href="../structtjregion.html#a7b3e0c24cfe87acc80e334cafdcf22c2" target="_parent">y</a>
<span class="SRScope">tjregion</span>
</div>
</div>
<div class="SRStatus" id="Searching">Searching...</div>
<div class="SRStatus" id="NoMatches">No Matches</div>
<script type="text/javascript"><!--
document.getElementById("Loading").style.display="none";
document.getElementById("NoMatches").style.display="none";
var searchResults = new SearchResults("searchResults");
searchResults.Search();
--></script>
</div>
</body>
</html>

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html><head><title></title>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<link rel="stylesheet" type="text/css" href="search.css"/>
<script type="text/javascript" src="search.js"></script>
</head>
<body class="SRPage">
<div id="SRIndex">
<div class="SRStatus" id="Loading">Loading...</div>
<div class="SRResult" id="SR_tjregion">
<div class="SREntry">
<a id="Item0" onkeydown="return searchResults.Nav(event,0)" onkeypress="return searchResults.Nav(event,0)" onkeyup="return searchResults.Nav(event,0)" class="SRSymbol" href="../structtjregion.html" target="_parent">tjregion</a>
</div>
</div>
<div class="SRResult" id="SR_tjscalingfactor">
<div class="SREntry">
<a id="Item1" onkeydown="return searchResults.Nav(event,1)" onkeypress="return searchResults.Nav(event,1)" onkeyup="return searchResults.Nav(event,1)" class="SRSymbol" href="../structtjscalingfactor.html" target="_parent">tjscalingfactor</a>
</div>
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<div class="SRResult" id="SR_tjtransform">
<div class="SREntry">
<a id="Item2" onkeydown="return searchResults.Nav(event,2)" onkeypress="return searchResults.Nav(event,2)" onkeyup="return searchResults.Nav(event,2)" class="SRSymbol" href="../structtjtransform.html" target="_parent">tjtransform</a>
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var searchResults = new SearchResults("searchResults");
searchResults.Search();
--></script>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html><head><title></title>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<link rel="stylesheet" type="text/css" href="search.css"/>
<script type="text/javascript" src="search.js"></script>
</head>
<body class="SRPage">
<div id="SRIndex">
<div class="SRStatus" id="NoMatches">No Matches</div>
</div>
</body>
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float: left;
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#MSearchBox {
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position: absolute;
float: none;
display: inline;
margin-top: 8px;
right: 0px;
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z-index: 102;
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#MSearchBox .left
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position:absolute;
left:10px;
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height:19px;
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left:4px;
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right:5px;
}
#MSearchField {
display:block;
position:absolute;
height:19px;
background:url('search_m.png') repeat-x;
border:none;
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margin-left:20px;
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#FSearchBox #MSearchField {
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height:19px;
background:url('search_r.png') no-repeat;
background-position:left;
}
#MSearchClose {
display: none;
position: absolute;
top: 4px;
background : none;
border: none;
margin: 0px 4px 0px 0px;
padding: 0px 0px;
outline: none;
}
.left #MSearchClose {
left: 6px;
}
.right #MSearchClose {
right: 2px;
}
.MSearchBoxActive #MSearchField {
color: #000000;
}
/*---------------- Search filter selection */
#MSearchSelectWindow {
display: none;
position: absolute;
left: 0; top: 0;
border: 1px solid #90A5CE;
background-color: #F9FAFC;
z-index: 1;
padding-top: 4px;
padding-bottom: 4px;
-moz-border-radius: 4px;
-webkit-border-top-left-radius: 4px;
-webkit-border-top-right-radius: 4px;
-webkit-border-bottom-left-radius: 4px;
-webkit-border-bottom-right-radius: 4px;
-webkit-box-shadow: 5px 5px 5px rgba(0, 0, 0, 0.15);
}
.SelectItem {
font: 8pt Arial, Verdana, sans-serif;
padding-left: 2px;
padding-right: 12px;
border: 0px;
}
span.SelectionMark {
margin-right: 4px;
font-family: monospace;
outline-style: none;
text-decoration: none;
}
a.SelectItem {
display: block;
outline-style: none;
color: #000000;
text-decoration: none;
padding-left: 6px;
padding-right: 12px;
}
a.SelectItem:focus,
a.SelectItem:active {
color: #000000;
outline-style: none;
text-decoration: none;
}
a.SelectItem:hover {
color: #FFFFFF;
background-color: #3D578C;
outline-style: none;
text-decoration: none;
cursor: pointer;
display: block;
}
/*---------------- Search results window */
iframe#MSearchResults {
width: 60ex;
height: 15em;
}
#MSearchResultsWindow {
display: none;
position: absolute;
left: 0; top: 0;
border: 1px solid #000;
background-color: #EEF1F7;
}
/* ----------------------------------- */
#SRIndex {
clear:both;
padding-bottom: 15px;
}
.SREntry {
font-size: 10pt;
padding-left: 1ex;
}
.SRPage .SREntry {
font-size: 8pt;
padding: 1px 5px;
}
body.SRPage {
margin: 5px 2px;
}
.SRChildren {
padding-left: 3ex; padding-bottom: .5em
}
.SRPage .SRChildren {
display: none;
}
.SRSymbol {
font-weight: bold;
color: #425E97;
font-family: Arial, Verdana, sans-serif;
text-decoration: none;
outline: none;
}
a.SRScope {
display: block;
color: #425E97;
font-family: Arial, Verdana, sans-serif;
text-decoration: none;
outline: none;
}
a.SRSymbol:focus, a.SRSymbol:active,
a.SRScope:focus, a.SRScope:active {
text-decoration: underline;
}
.SRPage .SRStatus {
padding: 2px 5px;
font-size: 8pt;
font-style: italic;
}
.SRResult {
display: none;
}
DIV.searchresults {
margin-left: 10px;
margin-right: 10px;
}

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// Search script generated by doxygen
// Copyright (C) 2009 by Dimitri van Heesch.
// The code in this file is loosly based on main.js, part of Natural Docs,
// which is Copyright (C) 2003-2008 Greg Valure
// Natural Docs is licensed under the GPL.
var indexSectionsWithContent =
{
0: "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000100010000011001010011100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
1: "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
2: "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000100010000011001000011100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
};
var indexSectionNames =
{
0: "all",
1: "classes",
2: "variables"
};
function convertToId(search)
{
var result = '';
for (i=0;i<search.length;i++)
{
var c = search.charAt(i);
var cn = c.charCodeAt(0);
if (c.match(/[a-z0-9]/))
{
result+=c;
}
else if (cn<16)
{
result+="_0"+cn.toString(16);
}
else
{
result+="_"+cn.toString(16);
}
}
return result;
}
function getXPos(item)
{
var x = 0;
if (item.offsetWidth)
{
while (item && item!=document.body)
{
x += item.offsetLeft;
item = item.offsetParent;
}
}
return x;
}
function getYPos(item)
{
var y = 0;
if (item.offsetWidth)
{
while (item && item!=document.body)
{
y += item.offsetTop;
item = item.offsetParent;
}
}
return y;
}
/* A class handling everything associated with the search panel.
Parameters:
name - The name of the global variable that will be
storing this instance. Is needed to be able to set timeouts.
resultPath - path to use for external files
*/
function SearchBox(name, resultsPath, inFrame, label)
{
if (!name || !resultsPath) { alert("Missing parameters to SearchBox."); }
// ---------- Instance variables
this.name = name;
this.resultsPath = resultsPath;
this.keyTimeout = 0;
this.keyTimeoutLength = 500;
this.closeSelectionTimeout = 300;
this.lastSearchValue = "";
this.lastResultsPage = "";
this.hideTimeout = 0;
this.searchIndex = 0;
this.searchActive = false;
this.insideFrame = inFrame;
this.searchLabel = label;
// ----------- DOM Elements
this.DOMSearchField = function()
{ return document.getElementById("MSearchField"); }
this.DOMSearchSelect = function()
{ return document.getElementById("MSearchSelect"); }
this.DOMSearchSelectWindow = function()
{ return document.getElementById("MSearchSelectWindow"); }
this.DOMPopupSearchResults = function()
{ return document.getElementById("MSearchResults"); }
this.DOMPopupSearchResultsWindow = function()
{ return document.getElementById("MSearchResultsWindow"); }
this.DOMSearchClose = function()
{ return document.getElementById("MSearchClose"); }
this.DOMSearchBox = function()
{ return document.getElementById("MSearchBox"); }
// ------------ Event Handlers
// Called when focus is added or removed from the search field.
this.OnSearchFieldFocus = function(isActive)
{
this.Activate(isActive);
}
this.OnSearchSelectShow = function()
{
var searchSelectWindow = this.DOMSearchSelectWindow();
var searchField = this.DOMSearchSelect();
if (this.insideFrame)
{
var left = getXPos(searchField);
var top = getYPos(searchField);
left += searchField.offsetWidth + 6;
top += searchField.offsetHeight;
// show search selection popup
searchSelectWindow.style.display='block';
left -= searchSelectWindow.offsetWidth;
searchSelectWindow.style.left = left + 'px';
searchSelectWindow.style.top = top + 'px';
}
else
{
var left = getXPos(searchField);
var top = getYPos(searchField);
top += searchField.offsetHeight;
// show search selection popup
searchSelectWindow.style.display='block';
searchSelectWindow.style.left = left + 'px';
searchSelectWindow.style.top = top + 'px';
}
// stop selection hide timer
if (this.hideTimeout)
{
clearTimeout(this.hideTimeout);
this.hideTimeout=0;
}
return false; // to avoid "image drag" default event
}
this.OnSearchSelectHide = function()
{
this.hideTimeout = setTimeout(this.name +".CloseSelectionWindow()",
this.closeSelectionTimeout);
}
// Called when the content of the search field is changed.
this.OnSearchFieldChange = function(evt)
{
if (this.keyTimeout) // kill running timer
{
clearTimeout(this.keyTimeout);
this.keyTimeout = 0;
}
var e = (evt) ? evt : window.event; // for IE
if (e.keyCode==40 || e.keyCode==13)
{
if (e.shiftKey==1)
{
this.OnSearchSelectShow();
var win=this.DOMSearchSelectWindow();
for (i=0;i<win.childNodes.length;i++)
{
var child = win.childNodes[i]; // get span within a
if (child.className=='SelectItem')
{
child.focus();
return;
}
}
return;
}
else if (window.frames.MSearchResults.searchResults)
{
var elem = window.frames.MSearchResults.searchResults.NavNext(0);
if (elem) elem.focus();
}
}
else if (e.keyCode==27) // Escape out of the search field
{
this.DOMSearchField().blur();
this.DOMPopupSearchResultsWindow().style.display = 'none';
this.DOMSearchClose().style.display = 'none';
this.lastSearchValue = '';
this.Activate(false);
return;
}
// strip whitespaces
var searchValue = this.DOMSearchField().value.replace(/ +/g, "");
if (searchValue != this.lastSearchValue) // search value has changed
{
if (searchValue != "") // non-empty search
{
// set timer for search update
this.keyTimeout = setTimeout(this.name + '.Search()',
this.keyTimeoutLength);
}
else // empty search field
{
this.DOMPopupSearchResultsWindow().style.display = 'none';
this.DOMSearchClose().style.display = 'none';
this.lastSearchValue = '';
}
}
}
this.SelectItemCount = function(id)
{
var count=0;
var win=this.DOMSearchSelectWindow();
for (i=0;i<win.childNodes.length;i++)
{
var child = win.childNodes[i]; // get span within a
if (child.className=='SelectItem')
{
count++;
}
}
return count;
}
this.SelectItemSet = function(id)
{
var i,j=0;
var win=this.DOMSearchSelectWindow();
for (i=0;i<win.childNodes.length;i++)
{
var child = win.childNodes[i]; // get span within a
if (child.className=='SelectItem')
{
var node = child.firstChild;
if (j==id)
{
node.innerHTML='&bull;';
}
else
{
node.innerHTML='&#160;';
}
j++;
}
}
}
// Called when an search filter selection is made.
// set item with index id as the active item
this.OnSelectItem = function(id)
{
this.searchIndex = id;
this.SelectItemSet(id);
var searchValue = this.DOMSearchField().value.replace(/ +/g, "");
if (searchValue!="" && this.searchActive) // something was found -> do a search
{
this.Search();
}
}
this.OnSearchSelectKey = function(evt)
{
var e = (evt) ? evt : window.event; // for IE
if (e.keyCode==40 && this.searchIndex<this.SelectItemCount()) // Down
{
this.searchIndex++;
this.OnSelectItem(this.searchIndex);
}
else if (e.keyCode==38 && this.searchIndex>0) // Up
{
this.searchIndex--;
this.OnSelectItem(this.searchIndex);
}
else if (e.keyCode==13 || e.keyCode==27)
{
this.OnSelectItem(this.searchIndex);
this.CloseSelectionWindow();
this.DOMSearchField().focus();
}
return false;
}
// --------- Actions
// Closes the results window.
this.CloseResultsWindow = function()
{
this.DOMPopupSearchResultsWindow().style.display = 'none';
this.DOMSearchClose().style.display = 'none';
this.Activate(false);
}
this.CloseSelectionWindow = function()
{
this.DOMSearchSelectWindow().style.display = 'none';
}
// Performs a search.
this.Search = function()
{
this.keyTimeout = 0;
// strip leading whitespace
var searchValue = this.DOMSearchField().value.replace(/^ +/, "");
var code = searchValue.toLowerCase().charCodeAt(0);
var hexCode;
if (code<16)
{
hexCode="0"+code.toString(16);
}
else
{
hexCode=code.toString(16);
}
var resultsPage;
var resultsPageWithSearch;
var hasResultsPage;
if (indexSectionsWithContent[this.searchIndex].charAt(code) == '1')
{
resultsPage = this.resultsPath + '/' + indexSectionNames[this.searchIndex] + '_' + hexCode + '.html';
resultsPageWithSearch = resultsPage+'?'+escape(searchValue);
hasResultsPage = true;
}
else // nothing available for this search term
{
resultsPage = this.resultsPath + '/nomatches.html';
resultsPageWithSearch = resultsPage;
hasResultsPage = false;
}
window.frames.MSearchResults.location.href = resultsPageWithSearch;
var domPopupSearchResultsWindow = this.DOMPopupSearchResultsWindow();
if (domPopupSearchResultsWindow.style.display!='block')
{
var domSearchBox = this.DOMSearchBox();
this.DOMSearchClose().style.display = 'inline';
if (this.insideFrame)
{
var domPopupSearchResults = this.DOMPopupSearchResults();
domPopupSearchResultsWindow.style.position = 'relative';
domPopupSearchResultsWindow.style.display = 'block';
var width = document.body.clientWidth - 8; // the -8 is for IE :-(
domPopupSearchResultsWindow.style.width = width + 'px';
domPopupSearchResults.style.width = width + 'px';
}
else
{
var domPopupSearchResults = this.DOMPopupSearchResults();
var left = getXPos(domSearchBox) + 150; // domSearchBox.offsetWidth;
var top = getYPos(domSearchBox) + 20; // domSearchBox.offsetHeight + 1;
domPopupSearchResultsWindow.style.display = 'block';
left -= domPopupSearchResults.offsetWidth;
domPopupSearchResultsWindow.style.top = top + 'px';
domPopupSearchResultsWindow.style.left = left + 'px';
}
}
this.lastSearchValue = searchValue;
this.lastResultsPage = resultsPage;
}
// -------- Activation Functions
// Activates or deactivates the search panel, resetting things to
// their default values if necessary.
this.Activate = function(isActive)
{
if (isActive || // open it
this.DOMPopupSearchResultsWindow().style.display == 'block'
)
{
this.DOMSearchBox().className = 'MSearchBoxActive';
var searchField = this.DOMSearchField();
if (searchField.value == this.searchLabel) // clear "Search" term upon entry
{
searchField.value = '';
this.searchActive = true;
}
}
else if (!isActive) // directly remove the panel
{
this.DOMSearchBox().className = 'MSearchBoxInactive';
this.DOMSearchField().value = this.searchLabel;
this.searchActive = false;
this.lastSearchValue = ''
this.lastResultsPage = '';
}
}
}
// -----------------------------------------------------------------------
// The class that handles everything on the search results page.
function SearchResults(name)
{
// The number of matches from the last run of <Search()>.
this.lastMatchCount = 0;
this.lastKey = 0;
this.repeatOn = false;
// Toggles the visibility of the passed element ID.
this.FindChildElement = function(id)
{
var parentElement = document.getElementById(id);
var element = parentElement.firstChild;
while (element && element!=parentElement)
{
if (element.nodeName == 'DIV' && element.className == 'SRChildren')
{
return element;
}
if (element.nodeName == 'DIV' && element.hasChildNodes())
{
element = element.firstChild;
}
else if (element.nextSibling)
{
element = element.nextSibling;
}
else
{
do
{
element = element.parentNode;
}
while (element && element!=parentElement && !element.nextSibling);
if (element && element!=parentElement)
{
element = element.nextSibling;
}
}
}
}
this.Toggle = function(id)
{
var element = this.FindChildElement(id);
if (element)
{
if (element.style.display == 'block')
{
element.style.display = 'none';
}
else
{
element.style.display = 'block';
}
}
}
// Searches for the passed string. If there is no parameter,
// it takes it from the URL query.
//
// Always returns true, since other documents may try to call it
// and that may or may not be possible.
this.Search = function(search)
{
if (!search) // get search word from URL
{
search = window.location.search;
search = search.substring(1); // Remove the leading '?'
search = unescape(search);
}
search = search.replace(/^ +/, ""); // strip leading spaces
search = search.replace(/ +$/, ""); // strip trailing spaces
search = search.toLowerCase();
search = convertToId(search);
var resultRows = document.getElementsByTagName("div");
var matches = 0;
var i = 0;
while (i < resultRows.length)
{
var row = resultRows.item(i);
if (row.className == "SRResult")
{
var rowMatchName = row.id.toLowerCase();
rowMatchName = rowMatchName.replace(/^sr\d*_/, ''); // strip 'sr123_'
if (search.length<=rowMatchName.length &&
rowMatchName.substr(0, search.length)==search)
{
row.style.display = 'block';
matches++;
}
else
{
row.style.display = 'none';
}
}
i++;
}
document.getElementById("Searching").style.display='none';
if (matches == 0) // no results
{
document.getElementById("NoMatches").style.display='block';
}
else // at least one result
{
document.getElementById("NoMatches").style.display='none';
}
this.lastMatchCount = matches;
return true;
}
// return the first item with index index or higher that is visible
this.NavNext = function(index)
{
var focusItem;
while (1)
{
var focusName = 'Item'+index;
focusItem = document.getElementById(focusName);
if (focusItem && focusItem.parentNode.parentNode.style.display=='block')
{
break;
}
else if (!focusItem) // last element
{
break;
}
focusItem=null;
index++;
}
return focusItem;
}
this.NavPrev = function(index)
{
var focusItem;
while (1)
{
var focusName = 'Item'+index;
focusItem = document.getElementById(focusName);
if (focusItem && focusItem.parentNode.parentNode.style.display=='block')
{
break;
}
else if (!focusItem) // last element
{
break;
}
focusItem=null;
index--;
}
return focusItem;
}
this.ProcessKeys = function(e)
{
if (e.type == "keydown")
{
this.repeatOn = false;
this.lastKey = e.keyCode;
}
else if (e.type == "keypress")
{
if (!this.repeatOn)
{
if (this.lastKey) this.repeatOn = true;
return false; // ignore first keypress after keydown
}
}
else if (e.type == "keyup")
{
this.lastKey = 0;
this.repeatOn = false;
}
return this.lastKey!=0;
}
this.Nav = function(evt,itemIndex)
{
var e = (evt) ? evt : window.event; // for IE
if (e.keyCode==13) return true;
if (!this.ProcessKeys(e)) return false;
if (this.lastKey==38) // Up
{
var newIndex = itemIndex-1;
var focusItem = this.NavPrev(newIndex);
if (focusItem)
{
var child = this.FindChildElement(focusItem.parentNode.parentNode.id);
if (child && child.style.display == 'block') // children visible
{
var n=0;
var tmpElem;
while (1) // search for last child
{
tmpElem = document.getElementById('Item'+newIndex+'_c'+n);
if (tmpElem)
{
focusItem = tmpElem;
}
else // found it!
{
break;
}
n++;
}
}
}
if (focusItem)
{
focusItem.focus();
}
else // return focus to search field
{
parent.document.getElementById("MSearchField").focus();
}
}
else if (this.lastKey==40) // Down
{
var newIndex = itemIndex+1;
var focusItem;
var item = document.getElementById('Item'+itemIndex);
var elem = this.FindChildElement(item.parentNode.parentNode.id);
if (elem && elem.style.display == 'block') // children visible
{
focusItem = document.getElementById('Item'+itemIndex+'_c0');
}
if (!focusItem) focusItem = this.NavNext(newIndex);
if (focusItem) focusItem.focus();
}
else if (this.lastKey==39) // Right
{
var item = document.getElementById('Item'+itemIndex);
var elem = this.FindChildElement(item.parentNode.parentNode.id);
if (elem) elem.style.display = 'block';
}
else if (this.lastKey==37) // Left
{
var item = document.getElementById('Item'+itemIndex);
var elem = this.FindChildElement(item.parentNode.parentNode.id);
if (elem) elem.style.display = 'none';
}
else if (this.lastKey==27) // Escape
{
parent.searchBox.CloseResultsWindow();
parent.document.getElementById("MSearchField").focus();
}
else if (this.lastKey==13) // Enter
{
return true;
}
return false;
}
this.NavChild = function(evt,itemIndex,childIndex)
{
var e = (evt) ? evt : window.event; // for IE
if (e.keyCode==13) return true;
if (!this.ProcessKeys(e)) return false;
if (this.lastKey==38) // Up
{
if (childIndex>0)
{
var newIndex = childIndex-1;
document.getElementById('Item'+itemIndex+'_c'+newIndex).focus();
}
else // already at first child, jump to parent
{
document.getElementById('Item'+itemIndex).focus();
}
}
else if (this.lastKey==40) // Down
{
var newIndex = childIndex+1;
var elem = document.getElementById('Item'+itemIndex+'_c'+newIndex);
if (!elem) // last child, jump to parent next parent
{
elem = this.NavNext(itemIndex+1);
}
if (elem)
{
elem.focus();
}
}
else if (this.lastKey==27) // Escape
{
parent.searchBox.CloseResultsWindow();
parent.document.getElementById("MSearchField").focus();
}
else if (this.lastKey==13) // Enter
{
return true;
}
return false;
}
}

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html><head><title></title>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<link rel="stylesheet" type="text/css" href="search.css"/>
<script type="text/javascript" src="search.js"></script>
</head>
<body class="SRPage">
<div id="SRIndex">
<div class="SRStatus" id="Loading">Loading...</div>
<div class="SRResult" id="SR_denom">
<div class="SREntry">
<a id="Item0" onkeydown="return searchResults.Nav(event,0)" onkeypress="return searchResults.Nav(event,0)" onkeyup="return searchResults.Nav(event,0)" class="SRSymbol" href="../structtjscalingfactor.html#aefbcdf3e9e62274b2d312c695f133ce3" target="_parent">denom</a>
<span class="SRScope">tjscalingfactor</span>
</div>
</div>
<div class="SRStatus" id="Searching">Searching...</div>
<div class="SRStatus" id="NoMatches">No Matches</div>
<script type="text/javascript"><!--
document.getElementById("Loading").style.display="none";
document.getElementById("NoMatches").style.display="none";
var searchResults = new SearchResults("searchResults");
searchResults.Search();
--></script>
</div>
</body>
</html>

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html><head><title></title>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<link rel="stylesheet" type="text/css" href="search.css"/>
<script type="text/javascript" src="search.js"></script>
</head>
<body class="SRPage">
<div id="SRIndex">
<div class="SRStatus" id="Loading">Loading...</div>
<div class="SRResult" id="SR_h">
<div class="SREntry">
<a id="Item0" onkeydown="return searchResults.Nav(event,0)" onkeypress="return searchResults.Nav(event,0)" onkeyup="return searchResults.Nav(event,0)" class="SRSymbol" href="../structtjregion.html#aecefc45a26f4d8b60dd4d825c1710115" target="_parent">h</a>
<span class="SRScope">tjregion</span>
</div>
</div>
<div class="SRStatus" id="Searching">Searching...</div>
<div class="SRStatus" id="NoMatches">No Matches</div>
<script type="text/javascript"><!--
document.getElementById("Loading").style.display="none";
document.getElementById("NoMatches").style.display="none";
var searchResults = new SearchResults("searchResults");
searchResults.Search();
--></script>
</div>
</body>
</html>

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html><head><title></title>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<link rel="stylesheet" type="text/css" href="search.css"/>
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<!-- doxytag: class="tjregion" -->
<p>Cropping region.
<a href="structtjregion.html#details">More...</a></p>
<p><code>#include &lt;turbojpeg.h&gt;</code></p>
<table class="memberdecls">
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Data Fields</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structtjregion.html#a4b6a37a93997091b26a75831fa291ad9">x</a></td></tr>
<tr><td class="mdescLeft">&#160;</td><td class="mdescRight">The left boundary of the cropping region. <a href="#a4b6a37a93997091b26a75831fa291ad9"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structtjregion.html#a7b3e0c24cfe87acc80e334cafdcf22c2">y</a></td></tr>
<tr><td class="mdescLeft">&#160;</td><td class="mdescRight">The upper boundary of the cropping region. <a href="#a7b3e0c24cfe87acc80e334cafdcf22c2"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structtjregion.html#ab6eb73ceef584fc23c8c8097926dce42">w</a></td></tr>
<tr><td class="mdescLeft">&#160;</td><td class="mdescRight">The width of the cropping region. <a href="#ab6eb73ceef584fc23c8c8097926dce42"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structtjregion.html#aecefc45a26f4d8b60dd4d825c1710115">h</a></td></tr>
<tr><td class="mdescLeft">&#160;</td><td class="mdescRight">The height of the cropping region. <a href="#aecefc45a26f4d8b60dd4d825c1710115"></a><br/></td></tr>
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<hr/><a name="details" id="details"></a><h2>Detailed Description</h2>
<div class="textblock"><p>Cropping region. </p>
</div><hr/><h2>Field Documentation</h2>
<a class="anchor" id="aecefc45a26f4d8b60dd4d825c1710115"></a><!-- doxytag: member="tjregion::h" ref="aecefc45a26f4d8b60dd4d825c1710115" args="" -->
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<td class="memname">int <a class="el" href="structtjregion.html#aecefc45a26f4d8b60dd4d825c1710115">tjregion::h</a></td>
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<p>The height of the cropping region. </p>
<p>Setting this to 0 is the equivalent of setting it to the height of the source JPEG image - y. </p>
</div>
</div>
<a class="anchor" id="ab6eb73ceef584fc23c8c8097926dce42"></a><!-- doxytag: member="tjregion::w" ref="ab6eb73ceef584fc23c8c8097926dce42" args="" -->
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<p>The width of the cropping region. </p>
<p>Setting this to 0 is the equivalent of setting it to the width of the source JPEG image - x. </p>
</div>
</div>
<a class="anchor" id="a4b6a37a93997091b26a75831fa291ad9"></a><!-- doxytag: member="tjregion::x" ref="a4b6a37a93997091b26a75831fa291ad9" args="" -->
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<p>The left boundary of the cropping region. </p>
<p>This must be evenly divisible by the MCU block width (see <a class="el" href="group___turbo_j_p_e_g.html#ga9e61e7cd47a15a173283ba94e781308c" title="MCU block width (in pixels) for a given level of chrominance subsampling.">tjMCUWidth</a>.) </p>
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<a class="anchor" id="a7b3e0c24cfe87acc80e334cafdcf22c2"></a><!-- doxytag: member="tjregion::y" ref="a7b3e0c24cfe87acc80e334cafdcf22c2" args="" -->
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<p>The upper boundary of the cropping region. </p>
<p>This must be evenly divisible by the MCU block height (see <a class="el" href="group___turbo_j_p_e_g.html#gabd247bb9fecb393eca57366feb8327bf" title="MCU block height (in pixels) for a given level of chrominance subsampling.">tjMCUHeight</a>.) </p>
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<hr/>The documentation for this struct was generated from the following file:<ul>
<li>turbojpeg.h</li>
</ul>
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<!-- doxytag: class="tjscalingfactor" -->
<p>Scaling factor.
<a href="structtjscalingfactor.html#details">More...</a></p>
<p><code>#include &lt;turbojpeg.h&gt;</code></p>
<table class="memberdecls">
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<tr><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structtjscalingfactor.html#a9b011e57f981ee23083e2c1aa5e640ec">num</a></td></tr>
<tr><td class="mdescLeft">&#160;</td><td class="mdescRight">Numerator. <a href="#a9b011e57f981ee23083e2c1aa5e640ec"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structtjscalingfactor.html#aefbcdf3e9e62274b2d312c695f133ce3">denom</a></td></tr>
<tr><td class="mdescLeft">&#160;</td><td class="mdescRight">Denominator. <a href="#aefbcdf3e9e62274b2d312c695f133ce3"></a><br/></td></tr>
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<hr/><a name="details" id="details"></a><h2>Detailed Description</h2>
<div class="textblock"><p>Scaling factor. </p>
</div><hr/><h2>Field Documentation</h2>
<a class="anchor" id="aefbcdf3e9e62274b2d312c695f133ce3"></a><!-- doxytag: member="tjscalingfactor::denom" ref="aefbcdf3e9e62274b2d312c695f133ce3" args="" -->
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<p>Denominator. </p>
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<p>Numerator. </p>
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<hr/>The documentation for this struct was generated from the following file:<ul>
<li>turbojpeg.h</li>
</ul>
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<div class="title">tjtransform Struct Reference<div class="ingroups"><a class="el" href="group___turbo_j_p_e_g.html">TurboJPEG</a></div></div> </div>
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<!-- doxytag: class="tjtransform" -->
<p>Lossless transform.
<a href="structtjtransform.html#details">More...</a></p>
<p><code>#include &lt;turbojpeg.h&gt;</code></p>
<table class="memberdecls">
<tr><td colspan="2"><h2><a name="pub-attribs"></a>
Data Fields</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="structtjregion.html">tjregion</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structtjtransform.html#ac324e5e442abec8a961e5bf219db12cf">r</a></td></tr>
<tr><td class="mdescLeft">&#160;</td><td class="mdescRight">Cropping region. <a href="#ac324e5e442abec8a961e5bf219db12cf"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structtjtransform.html#a2525aab4ba6978a1c273f74fef50e498">op</a></td></tr>
<tr><td class="mdescLeft">&#160;</td><td class="mdescRight">One of the <a class="el" href="group___turbo_j_p_e_g.html#ga2de531af4e7e6c4f124908376b354866">transform operations</a>. <a href="#a2525aab4ba6978a1c273f74fef50e498"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structtjtransform.html#ac0e74655baa4402209a21e1ae481c8f6">options</a></td></tr>
<tr><td class="mdescLeft">&#160;</td><td class="mdescRight">The bitwise OR of one of more of the <a class="el" href="group___turbo_j_p_e_g.html#ga9c771a757fc1294add611906b89ab2d2">transform options</a>. <a href="#ac0e74655baa4402209a21e1ae481c8f6"></a><br/></td></tr>
</table>
<hr/><a name="details" id="details"></a><h2>Detailed Description</h2>
<div class="textblock"><p>Lossless transform. </p>
</div><hr/><h2>Field Documentation</h2>
<a class="anchor" id="a2525aab4ba6978a1c273f74fef50e498"></a><!-- doxytag: member="tjtransform::op" ref="a2525aab4ba6978a1c273f74fef50e498" args="" -->
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<p>One of the <a class="el" href="group___turbo_j_p_e_g.html#ga2de531af4e7e6c4f124908376b354866">transform operations</a>. </p>
</div>
</div>
<a class="anchor" id="ac0e74655baa4402209a21e1ae481c8f6"></a><!-- doxytag: member="tjtransform::options" ref="ac0e74655baa4402209a21e1ae481c8f6" args="" -->
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<p>The bitwise OR of one of more of the <a class="el" href="group___turbo_j_p_e_g.html#ga9c771a757fc1294add611906b89ab2d2">transform options</a>. </p>
</div>
</div>
<a class="anchor" id="ac324e5e442abec8a961e5bf219db12cf"></a><!-- doxytag: member="tjtransform::r" ref="ac324e5e442abec8a961e5bf219db12cf" args="" -->
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<td class="memname"><a class="el" href="structtjregion.html">tjregion</a> <a class="el" href="structtjtransform.html#ac324e5e442abec8a961e5bf219db12cf">tjtransform::r</a></td>
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<p>Cropping region. </p>
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<hr/>The documentation for this struct was generated from the following file:<ul>
<li>turbojpeg.h</li>
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/*
* example.c
*
* This file illustrates how to use the IJG code as a subroutine library
* to read or write JPEG image files. You should look at this code in
* conjunction with the documentation file libjpeg.txt.
*
* This code will not do anything useful as-is, but it may be helpful as a
* skeleton for constructing routines that call the JPEG library.
*
* We present these routines in the same coding style used in the JPEG code
* (ANSI function definitions, etc); but you are of course free to code your
* routines in a different style if you prefer.
*/
#include <stdio.h>
/*
* Include file for users of JPEG library.
* You will need to have included system headers that define at least
* the typedefs FILE and size_t before you can include jpeglib.h.
* (stdio.h is sufficient on ANSI-conforming systems.)
* You may also wish to include "jerror.h".
*/
#include "jpeglib.h"
/*
* <setjmp.h> is used for the optional error recovery mechanism shown in
* the second part of the example.
*/
#include <setjmp.h>
/******************** JPEG COMPRESSION SAMPLE INTERFACE *******************/
/* This half of the example shows how to feed data into the JPEG compressor.
* We present a minimal version that does not worry about refinements such
* as error recovery (the JPEG code will just exit() if it gets an error).
*/
/*
* IMAGE DATA FORMATS:
*
* The standard input image format is a rectangular array of pixels, with
* each pixel having the same number of "component" values (color channels).
* Each pixel row is an array of JSAMPLEs (which typically are unsigned chars).
* If you are working with color data, then the color values for each pixel
* must be adjacent in the row; for example, R,G,B,R,G,B,R,G,B,... for 24-bit
* RGB color.
*
* For this example, we'll assume that this data structure matches the way
* our application has stored the image in memory, so we can just pass a
* pointer to our image buffer. In particular, let's say that the image is
* RGB color and is described by:
*/
extern JSAMPLE * image_buffer; /* Points to large array of R,G,B-order data */
extern int image_height; /* Number of rows in image */
extern int image_width; /* Number of columns in image */
/*
* Sample routine for JPEG compression. We assume that the target file name
* and a compression quality factor are passed in.
*/
GLOBAL(void)
write_JPEG_file (char * filename, int quality)
{
/* This struct contains the JPEG compression parameters and pointers to
* working space (which is allocated as needed by the JPEG library).
* It is possible to have several such structures, representing multiple
* compression/decompression processes, in existence at once. We refer
* to any one struct (and its associated working data) as a "JPEG object".
*/
struct jpeg_compress_struct cinfo;
/* This struct represents a JPEG error handler. It is declared separately
* because applications often want to supply a specialized error handler
* (see the second half of this file for an example). But here we just
* take the easy way out and use the standard error handler, which will
* print a message on stderr and call exit() if compression fails.
* Note that this struct must live as long as the main JPEG parameter
* struct, to avoid dangling-pointer problems.
*/
struct jpeg_error_mgr jerr;
/* More stuff */
FILE * outfile; /* target file */
JSAMPROW row_pointer[1]; /* pointer to JSAMPLE row[s] */
int row_stride; /* physical row width in image buffer */
/* Step 1: allocate and initialize JPEG compression object */
/* We have to set up the error handler first, in case the initialization
* step fails. (Unlikely, but it could happen if you are out of memory.)
* This routine fills in the contents of struct jerr, and returns jerr's
* address which we place into the link field in cinfo.
*/
cinfo.err = jpeg_std_error(&jerr);
/* Now we can initialize the JPEG compression object. */
jpeg_create_compress(&cinfo);
/* Step 2: specify data destination (eg, a file) */
/* Note: steps 2 and 3 can be done in either order. */
/* Here we use the library-supplied code to send compressed data to a
* stdio stream. You can also write your own code to do something else.
* VERY IMPORTANT: use "b" option to fopen() if you are on a machine that
* requires it in order to write binary files.
*/
if ((outfile = fopen(filename, "wb")) == NULL) {
fprintf(stderr, "can't open %s\n", filename);
exit(1);
}
jpeg_stdio_dest(&cinfo, outfile);
/* Step 3: set parameters for compression */
/* First we supply a description of the input image.
* Four fields of the cinfo struct must be filled in:
*/
cinfo.image_width = image_width; /* image width and height, in pixels */
cinfo.image_height = image_height;
cinfo.input_components = 3; /* # of color components per pixel */
cinfo.in_color_space = JCS_RGB; /* colorspace of input image */
/* Now use the library's routine to set default compression parameters.
* (You must set at least cinfo.in_color_space before calling this,
* since the defaults depend on the source color space.)
*/
jpeg_set_defaults(&cinfo);
/* Now you can set any non-default parameters you wish to.
* Here we just illustrate the use of quality (quantization table) scaling:
*/
jpeg_set_quality(&cinfo, quality, TRUE /* limit to baseline-JPEG values */);
/* Step 4: Start compressor */
/* TRUE ensures that we will write a complete interchange-JPEG file.
* Pass TRUE unless you are very sure of what you're doing.
*/
jpeg_start_compress(&cinfo, TRUE);
/* Step 5: while (scan lines remain to be written) */
/* jpeg_write_scanlines(...); */
/* Here we use the library's state variable cinfo.next_scanline as the
* loop counter, so that we don't have to keep track ourselves.
* To keep things simple, we pass one scanline per call; you can pass
* more if you wish, though.
*/
row_stride = image_width * 3; /* JSAMPLEs per row in image_buffer */
while (cinfo.next_scanline < cinfo.image_height) {
/* jpeg_write_scanlines expects an array of pointers to scanlines.
* Here the array is only one element long, but you could pass
* more than one scanline at a time if that's more convenient.
*/
row_pointer[0] = & image_buffer[cinfo.next_scanline * row_stride];
(void) jpeg_write_scanlines(&cinfo, row_pointer, 1);
}
/* Step 6: Finish compression */
jpeg_finish_compress(&cinfo);
/* After finish_compress, we can close the output file. */
fclose(outfile);
/* Step 7: release JPEG compression object */
/* This is an important step since it will release a good deal of memory. */
jpeg_destroy_compress(&cinfo);
/* And we're done! */
}
/*
* SOME FINE POINTS:
*
* In the above loop, we ignored the return value of jpeg_write_scanlines,
* which is the number of scanlines actually written. We could get away
* with this because we were only relying on the value of cinfo.next_scanline,
* which will be incremented correctly. If you maintain additional loop
* variables then you should be careful to increment them properly.
* Actually, for output to a stdio stream you needn't worry, because
* then jpeg_write_scanlines will write all the lines passed (or else exit
* with a fatal error). Partial writes can only occur if you use a data
* destination module that can demand suspension of the compressor.
* (If you don't know what that's for, you don't need it.)
*
* If the compressor requires full-image buffers (for entropy-coding
* optimization or a multi-scan JPEG file), it will create temporary
* files for anything that doesn't fit within the maximum-memory setting.
* (Note that temp files are NOT needed if you use the default parameters.)
* On some systems you may need to set up a signal handler to ensure that
* temporary files are deleted if the program is interrupted. See libjpeg.txt.
*
* Scanlines MUST be supplied in top-to-bottom order if you want your JPEG
* files to be compatible with everyone else's. If you cannot readily read
* your data in that order, you'll need an intermediate array to hold the
* image. See rdtarga.c or rdbmp.c for examples of handling bottom-to-top
* source data using the JPEG code's internal virtual-array mechanisms.
*/
/******************** JPEG DECOMPRESSION SAMPLE INTERFACE *******************/
/* This half of the example shows how to read data from the JPEG decompressor.
* It's a bit more refined than the above, in that we show:
* (a) how to modify the JPEG library's standard error-reporting behavior;
* (b) how to allocate workspace using the library's memory manager.
*
* Just to make this example a little different from the first one, we'll
* assume that we do not intend to put the whole image into an in-memory
* buffer, but to send it line-by-line someplace else. We need a one-
* scanline-high JSAMPLE array as a work buffer, and we will let the JPEG
* memory manager allocate it for us. This approach is actually quite useful
* because we don't need to remember to deallocate the buffer separately: it
* will go away automatically when the JPEG object is cleaned up.
*/
/*
* ERROR HANDLING:
*
* The JPEG library's standard error handler (jerror.c) is divided into
* several "methods" which you can override individually. This lets you
* adjust the behavior without duplicating a lot of code, which you might
* have to update with each future release.
*
* Our example here shows how to override the "error_exit" method so that
* control is returned to the library's caller when a fatal error occurs,
* rather than calling exit() as the standard error_exit method does.
*
* We use C's setjmp/longjmp facility to return control. This means that the
* routine which calls the JPEG library must first execute a setjmp() call to
* establish the return point. We want the replacement error_exit to do a
* longjmp(). But we need to make the setjmp buffer accessible to the
* error_exit routine. To do this, we make a private extension of the
* standard JPEG error handler object. (If we were using C++, we'd say we
* were making a subclass of the regular error handler.)
*
* Here's the extended error handler struct:
*/
struct my_error_mgr {
struct jpeg_error_mgr pub; /* "public" fields */
jmp_buf setjmp_buffer; /* for return to caller */
};
typedef struct my_error_mgr * my_error_ptr;
/*
* Here's the routine that will replace the standard error_exit method:
*/
METHODDEF(void)
my_error_exit (j_common_ptr cinfo)
{
/* cinfo->err really points to a my_error_mgr struct, so coerce pointer */
my_error_ptr myerr = (my_error_ptr) cinfo->err;
/* Always display the message. */
/* We could postpone this until after returning, if we chose. */
(*cinfo->err->output_message) (cinfo);
/* Return control to the setjmp point */
longjmp(myerr->setjmp_buffer, 1);
}
/*
* Sample routine for JPEG decompression. We assume that the source file name
* is passed in. We want to return 1 on success, 0 on error.
*/
GLOBAL(int)
read_JPEG_file (char * filename)
{
/* This struct contains the JPEG decompression parameters and pointers to
* working space (which is allocated as needed by the JPEG library).
*/
struct jpeg_decompress_struct cinfo;
/* We use our private extension JPEG error handler.
* Note that this struct must live as long as the main JPEG parameter
* struct, to avoid dangling-pointer problems.
*/
struct my_error_mgr jerr;
/* More stuff */
FILE * infile; /* source file */
JSAMPARRAY buffer; /* Output row buffer */
int row_stride; /* physical row width in output buffer */
/* In this example we want to open the input file before doing anything else,
* so that the setjmp() error recovery below can assume the file is open.
* VERY IMPORTANT: use "b" option to fopen() if you are on a machine that
* requires it in order to read binary files.
*/
if ((infile = fopen(filename, "rb")) == NULL) {
fprintf(stderr, "can't open %s\n", filename);
return 0;
}
/* Step 1: allocate and initialize JPEG decompression object */
/* We set up the normal JPEG error routines, then override error_exit. */
cinfo.err = jpeg_std_error(&jerr.pub);
jerr.pub.error_exit = my_error_exit;
/* Establish the setjmp return context for my_error_exit to use. */
if (setjmp(jerr.setjmp_buffer)) {
/* If we get here, the JPEG code has signaled an error.
* We need to clean up the JPEG object, close the input file, and return.
*/
jpeg_destroy_decompress(&cinfo);
fclose(infile);
return 0;
}
/* Now we can initialize the JPEG decompression object. */
jpeg_create_decompress(&cinfo);
/* Step 2: specify data source (eg, a file) */
jpeg_stdio_src(&cinfo, infile);
/* Step 3: read file parameters with jpeg_read_header() */
(void) jpeg_read_header(&cinfo, TRUE);
/* We can ignore the return value from jpeg_read_header since
* (a) suspension is not possible with the stdio data source, and
* (b) we passed TRUE to reject a tables-only JPEG file as an error.
* See libjpeg.txt for more info.
*/
/* Step 4: set parameters for decompression */
/* In this example, we don't need to change any of the defaults set by
* jpeg_read_header(), so we do nothing here.
*/
/* Step 5: Start decompressor */
(void) jpeg_start_decompress(&cinfo);
/* We can ignore the return value since suspension is not possible
* with the stdio data source.
*/
/* We may need to do some setup of our own at this point before reading
* the data. After jpeg_start_decompress() we have the correct scaled
* output image dimensions available, as well as the output colormap
* if we asked for color quantization.
* In this example, we need to make an output work buffer of the right size.
*/
/* JSAMPLEs per row in output buffer */
row_stride = cinfo.output_width * cinfo.output_components;
/* Make a one-row-high sample array that will go away when done with image */
buffer = (*cinfo.mem->alloc_sarray)
((j_common_ptr) &cinfo, JPOOL_IMAGE, row_stride, 1);
/* Step 6: while (scan lines remain to be read) */
/* jpeg_read_scanlines(...); */
/* Here we use the library's state variable cinfo.output_scanline as the
* loop counter, so that we don't have to keep track ourselves.
*/
while (cinfo.output_scanline < cinfo.output_height) {
/* jpeg_read_scanlines expects an array of pointers to scanlines.
* Here the array is only one element long, but you could ask for
* more than one scanline at a time if that's more convenient.
*/
(void) jpeg_read_scanlines(&cinfo, buffer, 1);
/* Assume put_scanline_someplace wants a pointer and sample count. */
put_scanline_someplace(buffer[0], row_stride);
}
/* Step 7: Finish decompression */
(void) jpeg_finish_decompress(&cinfo);
/* We can ignore the return value since suspension is not possible
* with the stdio data source.
*/
/* Step 8: Release JPEG decompression object */
/* This is an important step since it will release a good deal of memory. */
jpeg_destroy_decompress(&cinfo);
/* After finish_decompress, we can close the input file.
* Here we postpone it until after no more JPEG errors are possible,
* so as to simplify the setjmp error logic above. (Actually, I don't
* think that jpeg_destroy can do an error exit, but why assume anything...)
*/
fclose(infile);
/* At this point you may want to check to see whether any corrupt-data
* warnings occurred (test whether jerr.pub.num_warnings is nonzero).
*/
/* And we're done! */
return 1;
}
/*
* SOME FINE POINTS:
*
* In the above code, we ignored the return value of jpeg_read_scanlines,
* which is the number of scanlines actually read. We could get away with
* this because we asked for only one line at a time and we weren't using
* a suspending data source. See libjpeg.txt for more info.
*
* We cheated a bit by calling alloc_sarray() after jpeg_start_decompress();
* we should have done it beforehand to ensure that the space would be
* counted against the JPEG max_memory setting. In some systems the above
* code would risk an out-of-memory error. However, in general we don't
* know the output image dimensions before jpeg_start_decompress(), unless we
* call jpeg_calc_output_dimensions(). See libjpeg.txt for more about this.
*
* Scanlines are returned in the same order as they appear in the JPEG file,
* which is standardly top-to-bottom. If you must emit data bottom-to-top,
* you can use one of the virtual arrays provided by the JPEG memory manager
* to invert the data. See wrbmp.c for an example.
*
* As with compression, some operating modes may require temporary files.
* On some systems you may need to set up a signal handler to ensure that
* temporary files are deleted if the program is interrupted. See libjpeg.txt.
*/

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IJG JPEG LIBRARY: FILE LIST
Copyright (C) 1994-2010, Thomas G. Lane, Guido Vollbeding, D. R. Commander.
This file is part of the Independent JPEG Group's software.
For conditions of distribution and use, see the accompanying README file.
Here is a road map to the files in the IJG JPEG distribution. The
distribution includes the JPEG library proper, plus two application
programs ("cjpeg" and "djpeg") which use the library to convert JPEG
files to and from some other popular image formats. A third application
"jpegtran" uses the library to do lossless conversion between different
variants of JPEG. There are also two stand-alone applications,
"rdjpgcom" and "wrjpgcom".
THE JPEG LIBRARY
================
Include files:
jpeglib.h JPEG library's exported data and function declarations.
jconfig.h Configuration declarations. Note: this file is not present
in the distribution; it is generated during installation.
jmorecfg.h Additional configuration declarations; need not be changed
for a standard installation.
jerror.h Declares JPEG library's error and trace message codes.
jinclude.h Central include file used by all IJG .c files to reference
system include files.
jpegint.h JPEG library's internal data structures.
jchuff.h Private declarations for Huffman encoder modules.
jdhuff.h Private declarations for Huffman decoder modules.
jdct.h Private declarations for forward & reverse DCT subsystems.
jmemsys.h Private declarations for memory management subsystem.
jversion.h Version information.
Applications using the library should include jpeglib.h (which in turn
includes jconfig.h and jmorecfg.h). Optionally, jerror.h may be included
if the application needs to reference individual JPEG error codes. The
other include files are intended for internal use and would not normally
be included by an application program. (cjpeg/djpeg/etc do use jinclude.h,
since its function is to improve portability of the whole IJG distribution.
Most other applications will directly include the system include files they
want, and hence won't need jinclude.h.)
C source code files:
These files contain most of the functions intended to be called directly by
an application program:
jcapimin.c Application program interface: core routines for compression.
jcapistd.c Application program interface: standard compression.
jdapimin.c Application program interface: core routines for decompression.
jdapistd.c Application program interface: standard decompression.
jcomapi.c Application program interface routines common to compression
and decompression.
jcparam.c Compression parameter setting helper routines.
jctrans.c API and library routines for transcoding compression.
jdtrans.c API and library routines for transcoding decompression.
Compression side of the library:
jcinit.c Initialization: determines which other modules to use.
jcmaster.c Master control: setup and inter-pass sequencing logic.
jcmainct.c Main buffer controller (preprocessor => JPEG compressor).
jcprepct.c Preprocessor buffer controller.
jccoefct.c Buffer controller for DCT coefficient buffer.
jccolor.c Color space conversion.
jcsample.c Downsampling.
jcdctmgr.c DCT manager (DCT implementation selection & control).
jfdctint.c Forward DCT using slow-but-accurate integer method.
jfdctfst.c Forward DCT using faster, less accurate integer method.
jfdctflt.c Forward DCT using floating-point arithmetic.
jchuff.c Huffman entropy coding for sequential JPEG.
jcphuff.c Huffman entropy coding for progressive JPEG.
jcarith.c Arithmetic entropy coding.
jcmarker.c JPEG marker writing.
jdatadst.c Data destination managers for memory and stdio output.
Decompression side of the library:
jdmaster.c Master control: determines which other modules to use.
jdinput.c Input controller: controls input processing modules.
jdmainct.c Main buffer controller (JPEG decompressor => postprocessor).
jdcoefct.c Buffer controller for DCT coefficient buffer.
jdpostct.c Postprocessor buffer controller.
jdmarker.c JPEG marker reading.
jdhuff.c Huffman entropy decoding for sequential JPEG.
jdphuff.c Huffman entropy decoding for progressive JPEG.
jdarith.c Arithmetic entropy decoding.
jddctmgr.c IDCT manager (IDCT implementation selection & control).
jidctint.c Inverse DCT using slow-but-accurate integer method.
jidctfst.c Inverse DCT using faster, less accurate integer method.
jidctflt.c Inverse DCT using floating-point arithmetic.
jidctred.c Inverse DCTs with reduced-size outputs.
jdsample.c Upsampling.
jdcolor.c Color space conversion.
jdmerge.c Merged upsampling/color conversion (faster, lower quality).
jquant1.c One-pass color quantization using a fixed-spacing colormap.
jquant2.c Two-pass color quantization using a custom-generated colormap.
Also handles one-pass quantization to an externally given map.
jdatasrc.c Data source managers for memory and stdio input.
Support files for both compression and decompression:
jaricom.c Tables for common use in arithmetic entropy encoding and
decoding routines.
jerror.c Standard error handling routines (application replaceable).
jmemmgr.c System-independent (more or less) memory management code.
jutils.c Miscellaneous utility routines.
jmemmgr.c relies on a system-dependent memory management module. The IJG
distribution includes the following implementations of the system-dependent
module:
jmemnobs.c "No backing store": assumes adequate virtual memory exists.
jmemansi.c Makes temporary files with ANSI-standard routine tmpfile().
jmemname.c Makes temporary files with program-generated file names.
jmemdos.c Custom implementation for MS-DOS (16-bit environment only):
can use extended and expanded memory as well as temp files.
jmemmac.c Custom implementation for Apple Macintosh.
Exactly one of the system-dependent modules should be configured into an
installed JPEG library (see install.txt for hints about which one to use).
On unusual systems you may find it worthwhile to make a special
system-dependent memory manager.
Non-C source code files:
jmemdosa.asm 80x86 assembly code support for jmemdos.c; used only in
MS-DOS-specific configurations of the JPEG library.
CJPEG/DJPEG/JPEGTRAN
====================
Include files:
cdjpeg.h Declarations shared by cjpeg/djpeg/jpegtran modules.
cderror.h Additional error and trace message codes for cjpeg et al.
transupp.h Declarations for jpegtran support routines in transupp.c.
C source code files:
cjpeg.c Main program for cjpeg.
djpeg.c Main program for djpeg.
jpegtran.c Main program for jpegtran.
cdjpeg.c Utility routines used by all three programs.
rdcolmap.c Code to read a colormap file for djpeg's "-map" switch.
rdswitch.c Code to process some of cjpeg's more complex switches.
Also used by jpegtran.
transupp.c Support code for jpegtran: lossless image manipulations.
Image file reader modules for cjpeg:
rdbmp.c BMP file input.
rdgif.c GIF file input (now just a stub).
rdppm.c PPM/PGM file input.
rdrle.c Utah RLE file input.
rdtarga.c Targa file input.
Image file writer modules for djpeg:
wrbmp.c BMP file output.
wrgif.c GIF file output (a mere shadow of its former self).
wrppm.c PPM/PGM file output.
wrrle.c Utah RLE file output.
wrtarga.c Targa file output.
RDJPGCOM/WRJPGCOM
=================
C source code files:
rdjpgcom.c Stand-alone rdjpgcom application.
wrjpgcom.c Stand-alone wrjpgcom application.
These programs do not depend on the IJG library. They do use
jconfig.h and jinclude.h, only to improve portability.
ADDITIONAL FILES
================
Documentation (see README for a guide to the documentation files):
README Master documentation file.
*.txt Other documentation files.
*.1 Documentation in Unix man page format.
change.log Version-to-version change highlights.
example.c Sample code for calling JPEG library.
Configuration/installation files and programs (see install.txt for more info):
configure Unix shell script to perform automatic configuration.
configure.ac Source file for use with Autoconf to generate configure.
ltmain.sh Support scripts for configure (from GNU libtool).
config.guess
config.sub
depcomp
missing
install-sh Install shell script for those Unix systems lacking one.
Makefile.in Makefile input for configure.
Makefile.am Source file for use with Automake to generate Makefile.in.
jconfig.txt Template for making jconfig.h by hand.
aclocal.m4 M4 macro definitions for use with Autoconf.
Test files (see install.txt for test procedure):
test*.* Source and comparison files for confidence test.
These are binary image files, NOT text files.

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/*
* jaricom.c
*
* Developed 1997-2009 by Guido Vollbeding.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file contains probability estimation tables for common use in
* arithmetic entropy encoding and decoding routines.
*
* This data represents Table D.2 in the JPEG spec (ISO/IEC IS 10918-1
* and CCITT Recommendation ITU-T T.81) and Table 24 in the JBIG spec
* (ISO/IEC IS 11544 and CCITT Recommendation ITU-T T.82).
*/
#define JPEG_INTERNALS
#include "jinclude.h"
#include "jpeglib.h"
/* The following #define specifies the packing of the four components
* into the compact INT32 representation.
* Note that this formula must match the actual arithmetic encoder
* and decoder implementation. The implementation has to be changed
* if this formula is changed.
* The current organization is leaned on Markus Kuhn's JBIG
* implementation (jbig_tab.c).
*/
#define V(i,a,b,c,d) (((INT32)a << 16) | ((INT32)c << 8) | ((INT32)d << 7) | b)
const INT32 jpeg_aritab[113+1] = {
/*
* Index, Qe_Value, Next_Index_LPS, Next_Index_MPS, Switch_MPS
*/
V( 0, 0x5a1d, 1, 1, 1 ),
V( 1, 0x2586, 14, 2, 0 ),
V( 2, 0x1114, 16, 3, 0 ),
V( 3, 0x080b, 18, 4, 0 ),
V( 4, 0x03d8, 20, 5, 0 ),
V( 5, 0x01da, 23, 6, 0 ),
V( 6, 0x00e5, 25, 7, 0 ),
V( 7, 0x006f, 28, 8, 0 ),
V( 8, 0x0036, 30, 9, 0 ),
V( 9, 0x001a, 33, 10, 0 ),
V( 10, 0x000d, 35, 11, 0 ),
V( 11, 0x0006, 9, 12, 0 ),
V( 12, 0x0003, 10, 13, 0 ),
V( 13, 0x0001, 12, 13, 0 ),
V( 14, 0x5a7f, 15, 15, 1 ),
V( 15, 0x3f25, 36, 16, 0 ),
V( 16, 0x2cf2, 38, 17, 0 ),
V( 17, 0x207c, 39, 18, 0 ),
V( 18, 0x17b9, 40, 19, 0 ),
V( 19, 0x1182, 42, 20, 0 ),
V( 20, 0x0cef, 43, 21, 0 ),
V( 21, 0x09a1, 45, 22, 0 ),
V( 22, 0x072f, 46, 23, 0 ),
V( 23, 0x055c, 48, 24, 0 ),
V( 24, 0x0406, 49, 25, 0 ),
V( 25, 0x0303, 51, 26, 0 ),
V( 26, 0x0240, 52, 27, 0 ),
V( 27, 0x01b1, 54, 28, 0 ),
V( 28, 0x0144, 56, 29, 0 ),
V( 29, 0x00f5, 57, 30, 0 ),
V( 30, 0x00b7, 59, 31, 0 ),
V( 31, 0x008a, 60, 32, 0 ),
V( 32, 0x0068, 62, 33, 0 ),
V( 33, 0x004e, 63, 34, 0 ),
V( 34, 0x003b, 32, 35, 0 ),
V( 35, 0x002c, 33, 9, 0 ),
V( 36, 0x5ae1, 37, 37, 1 ),
V( 37, 0x484c, 64, 38, 0 ),
V( 38, 0x3a0d, 65, 39, 0 ),
V( 39, 0x2ef1, 67, 40, 0 ),
V( 40, 0x261f, 68, 41, 0 ),
V( 41, 0x1f33, 69, 42, 0 ),
V( 42, 0x19a8, 70, 43, 0 ),
V( 43, 0x1518, 72, 44, 0 ),
V( 44, 0x1177, 73, 45, 0 ),
V( 45, 0x0e74, 74, 46, 0 ),
V( 46, 0x0bfb, 75, 47, 0 ),
V( 47, 0x09f8, 77, 48, 0 ),
V( 48, 0x0861, 78, 49, 0 ),
V( 49, 0x0706, 79, 50, 0 ),
V( 50, 0x05cd, 48, 51, 0 ),
V( 51, 0x04de, 50, 52, 0 ),
V( 52, 0x040f, 50, 53, 0 ),
V( 53, 0x0363, 51, 54, 0 ),
V( 54, 0x02d4, 52, 55, 0 ),
V( 55, 0x025c, 53, 56, 0 ),
V( 56, 0x01f8, 54, 57, 0 ),
V( 57, 0x01a4, 55, 58, 0 ),
V( 58, 0x0160, 56, 59, 0 ),
V( 59, 0x0125, 57, 60, 0 ),
V( 60, 0x00f6, 58, 61, 0 ),
V( 61, 0x00cb, 59, 62, 0 ),
V( 62, 0x00ab, 61, 63, 0 ),
V( 63, 0x008f, 61, 32, 0 ),
V( 64, 0x5b12, 65, 65, 1 ),
V( 65, 0x4d04, 80, 66, 0 ),
V( 66, 0x412c, 81, 67, 0 ),
V( 67, 0x37d8, 82, 68, 0 ),
V( 68, 0x2fe8, 83, 69, 0 ),
V( 69, 0x293c, 84, 70, 0 ),
V( 70, 0x2379, 86, 71, 0 ),
V( 71, 0x1edf, 87, 72, 0 ),
V( 72, 0x1aa9, 87, 73, 0 ),
V( 73, 0x174e, 72, 74, 0 ),
V( 74, 0x1424, 72, 75, 0 ),
V( 75, 0x119c, 74, 76, 0 ),
V( 76, 0x0f6b, 74, 77, 0 ),
V( 77, 0x0d51, 75, 78, 0 ),
V( 78, 0x0bb6, 77, 79, 0 ),
V( 79, 0x0a40, 77, 48, 0 ),
V( 80, 0x5832, 80, 81, 1 ),
V( 81, 0x4d1c, 88, 82, 0 ),
V( 82, 0x438e, 89, 83, 0 ),
V( 83, 0x3bdd, 90, 84, 0 ),
V( 84, 0x34ee, 91, 85, 0 ),
V( 85, 0x2eae, 92, 86, 0 ),
V( 86, 0x299a, 93, 87, 0 ),
V( 87, 0x2516, 86, 71, 0 ),
V( 88, 0x5570, 88, 89, 1 ),
V( 89, 0x4ca9, 95, 90, 0 ),
V( 90, 0x44d9, 96, 91, 0 ),
V( 91, 0x3e22, 97, 92, 0 ),
V( 92, 0x3824, 99, 93, 0 ),
V( 93, 0x32b4, 99, 94, 0 ),
V( 94, 0x2e17, 93, 86, 0 ),
V( 95, 0x56a8, 95, 96, 1 ),
V( 96, 0x4f46, 101, 97, 0 ),
V( 97, 0x47e5, 102, 98, 0 ),
V( 98, 0x41cf, 103, 99, 0 ),
V( 99, 0x3c3d, 104, 100, 0 ),
V( 100, 0x375e, 99, 93, 0 ),
V( 101, 0x5231, 105, 102, 0 ),
V( 102, 0x4c0f, 106, 103, 0 ),
V( 103, 0x4639, 107, 104, 0 ),
V( 104, 0x415e, 103, 99, 0 ),
V( 105, 0x5627, 105, 106, 1 ),
V( 106, 0x50e7, 108, 107, 0 ),
V( 107, 0x4b85, 109, 103, 0 ),
V( 108, 0x5597, 110, 109, 0 ),
V( 109, 0x504f, 111, 107, 0 ),
V( 110, 0x5a10, 110, 111, 1 ),
V( 111, 0x5522, 112, 109, 0 ),
V( 112, 0x59eb, 112, 111, 1 ),
/*
* This last entry is used for fixed probability estimate of 0.5
* as recommended in Section 10.3 Table 5 of ITU-T Rec. T.851.
*/
V( 113, 0x5a1d, 113, 113, 0 )
};

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set(JAR_FILE turbojpeg.jar)
set(MANIFEST_FILE ${CMAKE_CURRENT_SOURCE_DIR}/MANIFEST.MF)
set(JAVA_CLASSNAMES org/libjpegturbo/turbojpeg/TJ
org/libjpegturbo/turbojpeg/TJCompressor
org/libjpegturbo/turbojpeg/TJDecompressor
org/libjpegturbo/turbojpeg/TJScalingFactor
org/libjpegturbo/turbojpeg/TJTransform
org/libjpegturbo/turbojpeg/TJTransformer
TJUnitTest
TJExample)
if(MSVC_IDE)
set(OBJDIR "${CMAKE_CURRENT_BINARY_DIR}/$(OutDir)")
else()
set(OBJDIR ${CMAKE_CURRENT_BINARY_DIR})
endif()
set(TURBOJPEG_DLL_NAME "turbojpeg")
if(MINGW)
set(TURBOJPEG_DLL_NAME "libturbojpeg")
endif()
configure_file(org/libjpegturbo/turbojpeg/TJLoader.java.in
${CMAKE_CURRENT_BINARY_DIR}/org/libjpegturbo/turbojpeg/TJLoader.java)
set(JAVA_SOURCES "")
set(JAVA_CLASSES "")
set(JAVA_CLASSES_FULL "")
foreach(class ${JAVA_CLASSNAMES})
set(JAVA_SOURCES ${JAVA_SOURCES} ${CMAKE_CURRENT_SOURCE_DIR}/${class}.java)
set(JAVA_CLASSES ${JAVA_CLASSES} ${class}.class)
set(JAVA_CLASSES_FULL ${JAVA_CLASSES_FULL} ${OBJDIR}/${class}.class)
endforeach()
set(JAVA_SOURCES ${JAVA_SOURCES}
${CMAKE_CURRENT_BINARY_DIR}/org/libjpegturbo/turbojpeg/TJLoader.java)
set(JAVA_CLASSES ${JAVA_CLASSES}
org/libjpegturbo/turbojpeg/TJLoader.class)
set(JAVA_CLASSES_FULL ${JAVA_CLASSES_FULL}
${OBJDIR}/org/libjpegturbo/turbojpeg/TJLoader.class)
string(REGEX REPLACE " " ";" JAVACFLAGS "${JAVACFLAGS}")
add_custom_command(OUTPUT ${JAVA_CLASSES_FULL} DEPENDS ${JAVA_SOURCES}
COMMAND ${JAVA_COMPILE} ARGS ${JAVACFLAGS} -d ${OBJDIR} ${JAVA_SOURCES})
add_custom_command(OUTPUT ${JAR_FILE} DEPENDS ${JAVA_CLASSES_FULL}
${MANIFEST_FILE}
COMMAND ${JAVA_ARCHIVE} cfm ${JAR_FILE} ${MANIFEST_FILE} ${JAVA_CLASSES}
WORKING_DIRECTORY ${OBJDIR})
add_custom_target(java ALL DEPENDS ${JAR_FILE})
install(FILES ${CMAKE_CURRENT_BINARY_DIR}/${JAR_FILE} DESTINATION classes)

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