Split build instructions into a new file and add SDK usage notes to README-turbo.txt
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@111 632fc199-4ca6-4c93-a231-07263d6284db
This commit is contained in:
DRC
282
BUILDING.txt
Normal file
282
BUILDING.txt
Normal file
@@ -0,0 +1,282 @@
|
||||
*******************************************************************************
|
||||
** Building on Unix Platforms, Cygwin, and MinGW
|
||||
*******************************************************************************
|
||||
|
||||
==================
|
||||
Build Requirements
|
||||
==================
|
||||
|
||||
-- autoconf 2.56 or later
|
||||
* If using MinGW, this can be obtained by installing the MSYS DTK
|
||||
|
||||
-- automake 1.7 or later
|
||||
* If using MinGW, this can be obtained by installing the MSYS DTK
|
||||
|
||||
-- libtool 1.4 or later
|
||||
* If using MinGW, this can be obtained by installing the MSYS DTK
|
||||
|
||||
-- NASM
|
||||
* 0.98 or later is required for a 32-bit build
|
||||
* NASM 2.05 or later is required for a 64-bit build
|
||||
* NASM 2.07 or later is required for a 64-bit build on OS/X (10.6 "Snow
|
||||
Leopard" or later.) This can be obtained from MacPorts
|
||||
(http://www.macports.org/).
|
||||
|
||||
The NASM 2.05 RPMs do not work on older Linux systems, such as Enterprise
|
||||
Linux 4. On such systems, you can easily build and install NASM 2.05
|
||||
from the source RPM by executing the following as root:
|
||||
|
||||
ARCH=`uname -m`
|
||||
wget http://www.nasm.us/pub/nasm/releasebuilds/2.05.01/nasm-2.05.01-1.src.rpm
|
||||
rpmbuild --rebuild nasm-2.05.01-1.src.rpm
|
||||
rpm -Uvh /usr/src/redhat/RPMS/$ARCH/nasm-2.05.01-1.$ARCH.rpm
|
||||
|
||||
-- GCC v4 or later recommended for best performance
|
||||
|
||||
======================
|
||||
Building libjpeg-turbo
|
||||
======================
|
||||
|
||||
The following procedure will build libjpeg-turbo on Linux, 32-bit OS X, and
|
||||
Solaris/x86 systems (on Solaris, this generates a 32-bit library. See below
|
||||
for 64-bit build instructions.)
|
||||
|
||||
cd libjpeg-turbo
|
||||
autoreconf -fiv
|
||||
sh ./configure
|
||||
make
|
||||
|
||||
NOTE: Running autoreconf 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.62.0.0 (Linux, Solaris)
|
||||
libjpeg.62.dylib (OS X)
|
||||
libjpeg-62.dll (MinGW)
|
||||
cygjpeg-62.dll (Cygwin)
|
||||
Shared library for libjpeg-turbo
|
||||
|
||||
libjpeg.so (Linux, Solaris)
|
||||
libjpeg.dylib (OS X)
|
||||
libjpeg.dll.a (Cygwin, MinGW)
|
||||
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
|
||||
|
||||
libturbojpeg.dll (MinGW)
|
||||
cygturbojpeg.dll (Cygwin)
|
||||
Shared library for TurboJPEG/OSS
|
||||
|
||||
libturbojpeg.dll.a (Cygwin, MinGW)
|
||||
Development stub for TurboJPEG/OSS shared library
|
||||
|
||||
========================
|
||||
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
|
||||
------------------------------------
|
||||
|
||||
Same instructions as above, but add
|
||||
|
||||
--host i686-pc-linux-gnu CFLAGS='-O3 -m32' CXXFLAGS='-O3 -m32'
|
||||
|
||||
to the configure command line.
|
||||
|
||||
|
||||
64-bit Library Build on 64-bit OS/X
|
||||
-----------------------------------
|
||||
|
||||
Same instructions as above, but add
|
||||
|
||||
--host x86_64-apple-darwin10.0.0 NASM=/opt/local/bin/nasm
|
||||
|
||||
to the configure command line. NASM 2.07 from MacPorts must be installed.
|
||||
|
||||
|
||||
32-bit Library Build on 64-bit OS/X
|
||||
-----------------------------------
|
||||
|
||||
Same instructions as above, but add
|
||||
|
||||
CFLAGS='-O3 -m32' CXXFLAGS='-O3 -m32' LDFLAGS=-m32
|
||||
|
||||
to the configure command line.
|
||||
|
||||
|
||||
32-bit Backward-Compatible Library Build on 64-bit OS/X
|
||||
-------------------------------------------------------
|
||||
|
||||
Same instructions as above, but add
|
||||
|
||||
CC=gcc-4.0 CXX=g++-4.0 CFLAGS='-isysroot /Developer/SDKs/MacOSX10.4u.sdk \
|
||||
-mmacosx-version-min=10.4 -O3 -m32' CXXFLAGS='-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
|
||||
--------------------------------------
|
||||
|
||||
Same instructions as above, but add
|
||||
|
||||
--host x86_64-pc-solaris CFLAGS='-O3 -m64' CXXFLAGS='-O3 -m64' LDFLAGS=-m64
|
||||
|
||||
to the configure command line.
|
||||
|
||||
|
||||
MinGW Build on Cygwin
|
||||
---------------------
|
||||
|
||||
Same instructions as above, but add
|
||||
|
||||
--host mingw32
|
||||
|
||||
to the configure command line. This will produce libraries which do not
|
||||
depend on cygwin1.dll or other Cygwin DLL's.
|
||||
|
||||
|
||||
*******************************************************************************
|
||||
** Windows (Visual C++)
|
||||
*******************************************************************************
|
||||
|
||||
==================
|
||||
Build Requirements
|
||||
==================
|
||||
|
||||
-- GNU Make v3.7 or later
|
||||
* Can be found in MSYS (http://www.mingw.org/download.shtml) or
|
||||
Cygwin (http://www.cygwin.com/)
|
||||
|
||||
-- Microsoft Visual C++ 2003 or later
|
||||
* Tested with Microsoft Visual C++ 2008 Express Edition (free download):
|
||||
|
||||
http://msdn.microsoft.com/vstudio/express/visualc/
|
||||
|
||||
* Add the compiler binary directories (for instance,
|
||||
c:\Program Files\Microsoft Visual Studio 9.0\VC\BIN;
|
||||
c:\Program Files\Microsoft Visual Studio 9.0\Common7\IDE)
|
||||
to the system or user PATH environment variable prior to building
|
||||
libjpeg-turbo.
|
||||
* Add the compiler include directory (for instance,
|
||||
c:\Program Files\Microsoft Visual Studio 9.0\VC\INCLUDE)
|
||||
to the system or user INCLUDE environment variable prior to building
|
||||
libjpeg-turbo.
|
||||
* Add the compiler library directory (for instance,
|
||||
c:\Program Files\Microsoft Visual Studio 9.0\VC\LIB)
|
||||
to the system or user LIB environment variable prior to building
|
||||
libjpeg-turbo.
|
||||
|
||||
-- Microsoft Windows SDK
|
||||
* This is included with Microsoft Visual C++ 2008 Express Edition, but users
|
||||
of prior editions of Visual C++ can download the SDK from:
|
||||
|
||||
http://msdn2.microsoft.com/en-us/windowsserver/bb980924.aspx
|
||||
|
||||
* Add the SDK binary directory (for instance,
|
||||
c:\Program Files\Microsoft SDKs\Windows\v6.0A\bin)
|
||||
to the system or user PATH environment variable prior to building
|
||||
libjpeg-turbo.
|
||||
* Add the SDK include directory (for instance,
|
||||
c:\Program Files\Microsoft SDKs\Windows\v6.0A\include)
|
||||
to the system or user INCLUDE environment variable prior to building
|
||||
libjpeg-turbo.
|
||||
* Add the SDK library directory (for instance,
|
||||
c:\Program Files\Microsoft SDKs\Windows\v6.0A\lib)
|
||||
to the system or user LIB environment variable prior to building
|
||||
libjpeg-turbo.
|
||||
|
||||
-- NASM (http://www.nasm.us/) 0.98 or later
|
||||
|
||||
======================
|
||||
Building libjpeg-turbo
|
||||
======================
|
||||
|
||||
cd libjpeg-turbo
|
||||
make -f win/Makefile
|
||||
|
||||
This will generate the following files:
|
||||
|
||||
jpeg-static.lib Static link library for libjpeg-turbo
|
||||
jpeg62.dll Shared library for libjpeg-turbo
|
||||
jpeg.lib Development stub for libjpeg-turbo shared library
|
||||
turbojpeg-static.lib Static link library for TurboJPEG/OSS
|
||||
turbojpeg.dll Shared library for TurboJPEG/OSS
|
||||
turbojpeg.lib Development stub for TurboJPEG/OSS shared library
|
||||
|
||||
|
||||
*******************************************************************************
|
||||
** Creating Release Packages
|
||||
*******************************************************************************
|
||||
|
||||
The following commands can be used to create various types of release packages:
|
||||
|
||||
make rpm
|
||||
|
||||
Create RedHat-style binary RPM package. Requires RPM v4 or later.
|
||||
|
||||
make srpm
|
||||
|
||||
This runs 'make dist' to create a pristine source tarball, then creates a
|
||||
RedHat-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
|
||||
|
||||
On 64-bit OS X (10.6 "Snow Leopard" or later), this creates a version of the
|
||||
Macintosh package/disk image which contains universal i386/x86-64 binaries.
|
||||
The 32-bit fork of these binaries is backward compatible with OS X 10.4 and
|
||||
later, whereas the 64-bit fork is compatible with OS X 10.6 and later. OS X
|
||||
10.4 compatibility SDK required.
|
||||
|
||||
make -f win/Makefile dist
|
||||
|
||||
This creates a Win32 installer for the libjpeg-turbo SDK. This requires the
|
||||
Nullsoft Install System (http://nsis.sourceforge.net/.) makensis.exe should
|
||||
be in your PATH.
|
||||
@@ -82,7 +82,7 @@ DISTMANS= cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 wrjpgcom.1
|
||||
|
||||
DOCS= README install.doc usage.doc wizard.doc example.c libjpeg.doc \
|
||||
structure.doc coderules.doc filelist.doc jconfig.doc change.log \
|
||||
README-turbo.txt rdrle.c wrrle.c LICENSE.txt LGPL.txt
|
||||
README-turbo.txt rdrle.c wrrle.c LICENSE.txt LGPL.txt BUILDING.txt
|
||||
|
||||
TESTFILES= testorig.jpg testimg.ppm testimg.bmp testimg.jpg testprog.jpg \
|
||||
testimgp.jpg
|
||||
|
||||
410
README-turbo.txt
410
README-turbo.txt
@@ -17,9 +17,8 @@ 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.
|
||||
|
||||
It was decided to split libjpeg-turbo into a separate SDK so that other
|
||||
projects could take advantage of this technology. The shared libraries
|
||||
built from the libjpeg-turbo source can be used as drop-in replacements for
|
||||
libjpeg on most systems.
|
||||
projects could take advantage of this technology. The libjpeg-turbo shared
|
||||
libraries can be used as drop-in replacements for libjpeg on most systems.
|
||||
|
||||
|
||||
*******************************************************************************
|
||||
@@ -27,258 +26,163 @@ libjpeg on most systems.
|
||||
*******************************************************************************
|
||||
|
||||
Some of the optimizations to the Huffman encoder/decoder were borrowed from
|
||||
VirtualGL, and thus libjpeg-turbo, as a whole, falls under the wxWindows
|
||||
Library Licence, Version 3.1. A copy of this license can be found in this
|
||||
directory under LICENSE.txt. The rest of the source code, apart from these
|
||||
modifications, falls under a less restrictive license (see README.)
|
||||
VirtualGL, and thus the libjpeg-turbo distribution, as a whole, falls under the
|
||||
wxWindows Library Licence, Version 3.1. A copy of this license can be found in
|
||||
this directory under LICENSE.txt. The rest of the source code, apart from
|
||||
these modifications, falls under a less restrictive license (see README.)
|
||||
|
||||
|
||||
*******************************************************************************
|
||||
** Building on Unix Platforms, Cygwin, and MinGW
|
||||
** Using libjpeg-turbo
|
||||
*******************************************************************************
|
||||
|
||||
==================
|
||||
Build Requirements
|
||||
==================
|
||||
|
||||
-- autoconf 2.56 or later
|
||||
* If using MinGW, this can be obtained by installing the MSYS DTK
|
||||
|
||||
-- automake 1.7 or later
|
||||
* If using MinGW, this can be obtained by installing the MSYS DTK
|
||||
|
||||
-- libtool 1.4 or later
|
||||
* If using MinGW, this can be obtained by installing the MSYS DTK
|
||||
|
||||
-- NASM
|
||||
* 0.98 or later is required for a 32-bit build
|
||||
* NASM 2.05 or later is required for a 64-bit build
|
||||
* NASM 2.07 or later is required for a 64-bit build on OS/X (10.6 "Snow
|
||||
Leopard" or later.) This can be obtained from MacPorts
|
||||
(http://www.macports.org/).
|
||||
|
||||
The NASM 2.05 RPMs do not work on older Linux systems, such as Enterprise
|
||||
Linux 4. On such systems, you can easily build and install NASM 2.05
|
||||
from the source RPM by executing the following as root:
|
||||
|
||||
ARCH=`uname -m`
|
||||
wget http://www.nasm.us/pub/nasm/releasebuilds/2.05.01/nasm-2.05.01-1.src.rpm
|
||||
rpmbuild --rebuild nasm-2.05.01-1.src.rpm
|
||||
rpm -Uvh /usr/src/redhat/RPMS/$ARCH/nasm-2.05.01-1.$ARCH.rpm
|
||||
|
||||
-- GCC v4 or later recommended for best performance
|
||||
|
||||
======================
|
||||
Building libjpeg-turbo
|
||||
======================
|
||||
|
||||
The following procedure will build libjpeg-turbo on Linux, 32-bit OS X, and
|
||||
Solaris/x86 systems (on Solaris, this generates a 32-bit library. See below
|
||||
for 64-bit build instructions.)
|
||||
|
||||
cd libjpeg-turbo
|
||||
autoreconf -fiv
|
||||
sh ./configure
|
||||
make
|
||||
|
||||
NOTE: Running autoreconf 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.62.0.0 (Linux, Solaris)
|
||||
libjpeg.62.dylib (OS X)
|
||||
libjpeg-62.dll (MinGW)
|
||||
cygjpeg-62.dll (Cygwin)
|
||||
Shared library for libjpeg-turbo
|
||||
|
||||
libjpeg.so (Linux, Solaris)
|
||||
libjpeg.dylib (OS X)
|
||||
libjpeg.dll.a (Cygwin, MinGW)
|
||||
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
|
||||
|
||||
libturbojpeg.dll (MinGW)
|
||||
cygturbojpeg.dll (Cygwin)
|
||||
Shared library for TurboJPEG/OSS
|
||||
|
||||
libturbojpeg.dll.a (Cygwin, MinGW)
|
||||
Development stub for TurboJPEG/OSS shared library
|
||||
|
||||
========================
|
||||
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 libdir=/usr/lib64
|
||||
|
||||
will overwrite the system version of libjpeg on a 64-bit RedHat-based Linux
|
||||
machine, causing any 64-bit applications that use libjpeg to be instantly
|
||||
accelerated. BACK UP YOUR SYSTEM'S INSTALLATION OF LIBJPEG BEFORE OVERWRITING
|
||||
IT.
|
||||
|
||||
The same can be done for 32-bit applications by building libjpeg-turbo as a
|
||||
32-bit library (see below) and installing with a libdir of /usr/lib. On
|
||||
Debian-based systems, 64-bit libraries are stored in /usr/lib and 32-bit
|
||||
libraries in /usr/lib32. On Solaris, 64-bit libraries are stored in
|
||||
/usr/lib/amd64 and 32-bit libraries in /usr/lib.
|
||||
|
||||
Mac applications typically bundle their own copies of libjpeg.62.dylib, so it
|
||||
is not possible to globally replace libjpeg on OS X systems. However, libjpeg
|
||||
can be replaced on an application-by-application basis, for those applications
|
||||
which use a shared library version of it. This would generally involve copying
|
||||
libjpeg.62.dylib into the appropriate place in the application's Contents and
|
||||
using install_name_tool to repoint the dylib to the new directory. This
|
||||
requires an advanced knowledge of OS X and is not recommended for most users.
|
||||
|
||||
=============
|
||||
Build Recipes
|
||||
=============
|
||||
|
||||
32-bit Library Build on 64-bit Linux
|
||||
------------------------------------
|
||||
|
||||
Same instructions as above, but add
|
||||
|
||||
--host i686-pc-linux-gnu CFLAGS='-O3 -m32' CXXFLAGS='-O3 -m32'
|
||||
|
||||
to the configure command line.
|
||||
|
||||
|
||||
64-bit Library Build on 64-bit OS/X
|
||||
-----------------------------------
|
||||
|
||||
Same instructions as above, but add
|
||||
|
||||
--host x86_64-apple-darwin10.0.0 NASM=/opt/local/bin/nasm
|
||||
|
||||
to the configure command line. NASM 2.07 from MacPorts must be installed.
|
||||
|
||||
|
||||
32-bit Library Build on 64-bit OS/X
|
||||
-----------------------------------
|
||||
|
||||
Same instructions as above, but add
|
||||
|
||||
CFLAGS='-O3 -m32' CXXFLAGS='-O3 -m32' LDFLAGS=-m32
|
||||
|
||||
to the configure command line.
|
||||
|
||||
|
||||
32-bit Backward-Compatible Library Build on 64-bit OS/X
|
||||
-------------------------------------------------------
|
||||
|
||||
Same instructions as above, but add
|
||||
|
||||
CC=gcc-4.0 CXX=g++-4.0 CFLAGS='-isysroot /Developer/SDKs/MacOSX10.4u.sdk \
|
||||
-mmacosx-version-min=10.4 -O3 -m32' CXXFLAGS='-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
|
||||
--------------------------------------
|
||||
|
||||
Same instructions as above, but add
|
||||
|
||||
--host x86_64-pc-solaris CFLAGS='-O3 -m64' CXXFLAGS='-O3 -m64' LDFLAGS=-m64
|
||||
|
||||
to the configure command line.
|
||||
|
||||
|
||||
MinGW Build on Cygwin
|
||||
---------------------
|
||||
|
||||
Same instructions as above, but add
|
||||
|
||||
--host mingw32
|
||||
|
||||
to the configure command line. This will produce libraries which do not
|
||||
depend on cygwin1.dll or other Cygwin DLL's.
|
||||
|
||||
|
||||
*******************************************************************************
|
||||
** Windows (Visual C++)
|
||||
*******************************************************************************
|
||||
|
||||
==================
|
||||
Build Requirements
|
||||
==================
|
||||
|
||||
-- GNU Make v3.7 or later
|
||||
* Can be found in MSYS (http://www.mingw.org/download.shtml) or
|
||||
Cygwin (http://www.cygwin.com/)
|
||||
|
||||
-- Microsoft Visual C++ 2003 or later
|
||||
* Tested with Microsoft Visual C++ 2008 Express Edition (free download):
|
||||
|
||||
http://msdn.microsoft.com/vstudio/express/visualc/
|
||||
|
||||
* Add the compiler binary directories (for instance,
|
||||
c:\Program Files\Microsoft Visual Studio 9.0\VC\BIN;
|
||||
c:\Program Files\Microsoft Visual Studio 9.0\Common7\IDE)
|
||||
to the system or user PATH environment variable prior to building
|
||||
libjpeg-turbo.
|
||||
* Add the compiler include directory (for instance,
|
||||
c:\Program Files\Microsoft Visual Studio 9.0\VC\INCLUDE)
|
||||
to the system or user INCLUDE environment variable prior to building
|
||||
libjpeg-turbo.
|
||||
* Add the compiler library directory (for instance,
|
||||
c:\Program Files\Microsoft Visual Studio 9.0\VC\LIB)
|
||||
to the system or user LIB environment variable prior to building
|
||||
libjpeg-turbo.
|
||||
|
||||
-- Microsoft Windows SDK
|
||||
* This is included with Microsoft Visual C++ 2008 Express Edition, but users
|
||||
of prior editions of Visual C++ can download the SDK from:
|
||||
|
||||
http://msdn2.microsoft.com/en-us/windowsserver/bb980924.aspx
|
||||
|
||||
* Add the SDK binary directory (for instance,
|
||||
c:\Program Files\Microsoft SDKs\Windows\v6.0A\bin)
|
||||
to the system or user PATH environment variable prior to building
|
||||
libjpeg-turbo.
|
||||
* Add the SDK include directory (for instance,
|
||||
c:\Program Files\Microsoft SDKs\Windows\v6.0A\include)
|
||||
to the system or user INCLUDE environment variable prior to building
|
||||
libjpeg-turbo.
|
||||
* Add the SDK library directory (for instance,
|
||||
c:\Program Files\Microsoft SDKs\Windows\v6.0A\lib)
|
||||
to the system or user LIB environment variable prior to building
|
||||
libjpeg-turbo.
|
||||
|
||||
-- NASM (http://www.nasm.us/) 0.98 or later
|
||||
|
||||
======================
|
||||
Building libjpeg-turbo
|
||||
======================
|
||||
|
||||
cd libjpeg-turbo
|
||||
make -f win/Makefile
|
||||
|
||||
This will generate the following files:
|
||||
|
||||
jpeg-static.lib Static link library for libjpeg-turbo
|
||||
jpeg62.dll Shared library for libjpeg-turbo
|
||||
jpeg.lib Development stub for libjpeg-turbo shared library
|
||||
turbojpeg-static.lib Static link library for TurboJPEG/OSS
|
||||
turbojpeg.dll Shared library for TurboJPEG/OSS
|
||||
turbojpeg.lib Development stub for TurboJPEG/OSS shared library
|
||||
=============================
|
||||
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 the 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/amd64, 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 Windows version of libjpeg-turbo installs jpeg62.dll into
|
||||
%systemroot%\system32. However, if jpeg62.dll also exists in an application's
|
||||
install directory, then Windows will load the application's version of it
|
||||
first. Thus, if an application ships with jpeg62.dll, then back up the
|
||||
application's version of jpeg62.dll and copy %systemroot%\system32\jpeg62.dll
|
||||
into the application's install directory to accelerate it.
|
||||
|
||||
Mac applications typically embed their own copies of libjpeg.62.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.62.dylib 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 prior) and TurboVNC. 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 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 contain 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 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 VirtualGL 2.2 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, you can build against libjpeg-turbo instead
|
||||
of libjpeg by setting
|
||||
|
||||
CPATH=/opt/libjpeg-turbo/include
|
||||
and
|
||||
LIBRARY_PATH=/opt/libjpeg-turbo/{lib}
|
||||
|
||||
({lib} = lib, lib32, lib64, or lib/amd64, as appropriate.)
|
||||
|
||||
This 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 the LD_LIBRARY_PATH or sym
|
||||
links appropriately 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 or Solaris application to link against the static version of
|
||||
libjpeg-turbo, you can use the following linker options:
|
||||
|
||||
-Wl,-Bstatic -ljpeg -Wl,-Bdynamic
|
||||
|
||||
or you can simply add /opt/libjpeg-turbo/{lib}/libjpeg.a to the linker command
|
||||
line (the latter is the only way to link against the static version of
|
||||
libjpeg-turbo on OS X.)
|
||||
|
||||
To build Visual C++ applications using libjpeg-turbo, add
|
||||
c:\libjpeg-turbo\include to your system or user INCLUDE environment variable
|
||||
and c:\libjpeg-turbo\lib to your system or user LIB environment variable, and
|
||||
then link against either jpeg.lib (to use jpeg62.dll) or jpeg-static.lib (to
|
||||
use the static version of libjpeg-turbo.)
|
||||
|
||||
If building an application using Cygwin, then set
|
||||
|
||||
CPATH=/cygdrive/c/libjpeg-turbo/include
|
||||
and
|
||||
LIBRARY_PATH=/cygdrive/c/libjpeg-turbo/lib
|
||||
|
||||
If using MinGW, then set
|
||||
|
||||
CPATH=/c/libjpeg-turbo/include
|
||||
and
|
||||
LIBRARY_PATH=/c/libjpeg-turbo/lib
|
||||
|
||||
and link using -ljpeg in both cases. NOTE: The static libraries shipped with
|
||||
the Windows version of libjpeg-turbo cannot be used with MinGW and Cygwin. If
|
||||
you wish to link statically with libjpeg-turbo using MinGW or Cygwin, then you
|
||||
will need to build libjpeg-turbo from source using GCC.
|
||||
|
||||
=====================
|
||||
Colorspace Extensions
|
||||
=====================
|
||||
|
||||
libjpeg-turbo includes extensions which allow JPEG images to be compressed
|
||||
directly from (and decompressed directly to) buffers which use BGR, BGRA,
|
||||
RGBA, ABGR, and ARGB 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.
|
||||
|
||||
Reference in New Issue
Block a user