mirror of
https://github.com/Ponce/slackbuilds
synced 2024-11-14 21:56:41 +01:00
41 lines
1.9 KiB
Text
41 lines
1.9 KiB
Text
mozjpeg (Mozilla JPEG Encoder Project)
|
|
|
|
mozjpeg is a fork of libjpeg-turbo from Mozilla Research. Its goal is to
|
|
reduce the size of JPEG files without reducing quality or compatibility
|
|
with the vast majority of the world's deployed decoders. The idea is to
|
|
reduce transfer times for JPEGs on the Web, thus reducing page load times.
|
|
|
|
mozjpeg is not intended to be a general JPEG library replacement. It makes
|
|
tradeoffs that are intended to benefit Web use cases and focuses solely
|
|
on improving encoding. It is best used as part of a Web encoding workflow.
|
|
|
|
In essence, libjpeg-turbo (as shipped with Slackware) is optimized for
|
|
speed of encoding/decoding, while mozjpeg is optimized for encoding
|
|
smaller file sizes (at the expense of speed). mozjpeg will not interfere
|
|
with Slackware's libjpeg-turbo package, as it installs to /opt/mozjpeg/.
|
|
|
|
mozjpeg supports multiple versions of the libjpeg API. By default,
|
|
version 6b is built. If you need compatibility with libjpeg 7 or 8,
|
|
set API=7 or API=8 in the script's environment.
|
|
|
|
Optionally, mozjpeg can be built with Java wrapper support for
|
|
turbojpeg. To do this, install one of: jdk, openjdk, openjdk8, or
|
|
openjdk6. Then run this script with JAVA=yes in the environment.
|
|
|
|
To run the binaries, it's probably easiest to add this to ~/.bash_profile:
|
|
|
|
export PATH=/opt/mozjpeg/bin:$PATH
|
|
export MANPATH=/opt/mozjpeg/man:$MANPATH
|
|
|
|
To compile & link with the mozjpeg libraries, use -I/opt/mozjpeg/include
|
|
and -L/opt/mozjpeg/lib (or lib64). You might also want -static, or
|
|
else -Wl,-rpath,/opt/mozjpeg/lib (or lib64). Starting with version 3.2,
|
|
there's also pkg-config support for mozjpeg. In ~/.bash_profile:
|
|
|
|
export PKG_CONFIG_PATH=/opt/mozjpeg/lib64/pkgconfig:$PKG_CONFIG_PATH
|
|
|
|
(chage lib64 to lib, for 32-bit Slackware)
|
|
|
|
If you built with JAVA=yes, the java library will be installed
|
|
as /opt/mozjpeg/classes/turbojpeg.jar, and the docs will be in
|
|
/usr/doc/mozjpeg-$VERSION/javadoc.
|