Beyond Linux® From Scratch （systemd 版） - 版本 g1798b28

第 10 章 图形与字体库

OpenJPEG-2.5.4

Introduction to OpenJPEG

OpenJPEG is an open-source implementation of the JPEG-2000 standard. OpenJPEG fully respects the JPEG-2000 specifications and can compress/decompress lossless 16-bit images.

[注意]

注意

Development versions of BLFS may not build or run some packages properly if LFS or dependencies have been updated since the most recent stable versions of the books.

Package Information

OpenJPEG Dependencies

Required

CMake-4.3.4

Optional

git-2.55.0 (for tests), Little CMS-2.19.1, libpng-1.6.58, tiff-4.7.2, and Doxygen-1.17.0 (to build the API documentation)

Installation of OpenJPEG

Install OpenJPEG by running the following commands: 

mkdir -v build &&
cd       build &&

cmake -D CMAKE_BUILD_TYPE=Release  \
      -D CMAKE_INSTALL_PREFIX=/usr \
      -D BUILD_STATIC_LIBS=OFF ..  &&
make

If you wish to run the tests, some additional files are required. Download these files and run the tests using the following commands, but note that 8 tests are known to fail: 

git clone https://github.com/uclouvain/openjpeg-data.git --depth 1 &&
OPJ_DATA_ROOT=$PWD/openjpeg-data cmake -D BUILD_TESTING=ON ..      &&
make                                                               &&
make test

Now, as the root user: 

make install &&
cp -rv ../doc/man -T /usr/share/man

Contents

Installed Programs: opj_compress, opj_decompress, and opj_dump
Installed Libraries: libopenjp2.so
Installed Directories: /usr/include/openjpeg-2.5 and /usr/lib/openjpeg-2.5

Short Descriptions

opj_compress

converts various image formats to the jpeg2000 format

opj_decompress

converts jpeg2000 images to other image types

opj_dump

reads in a jpeg2000 image and dumps the contents to stdout