openjpeg

golang wrapper for openjpeg library v2.5.0

description

only tested on windows x64 (Windows 7 Windows 10) Mac OS X 13 centos 7 ubuntu 22.04. you should test it yourself for other platforms.

usage

refer to example dir

import openjpeg "github.com/linxlib/openjpeg"

build

install golang > 1.18 first

Windows

• install MSYS2
• add C:\msys64\mingw64\bin to PATH environment
• open MSYS2 MSYS from start menu, install gcc with pacman -S mingw-w64-x86_64-gcc
• git clone https://github.com/linxlib/openjpeg
• cd openjpeg\example
• go run -v .\main.go
• then you get a jp2000.jpg in the same dir. you can change the example code to get different image file

Linux (Centos 7)

The version of openjpeg in package manager may not the latest (v2.5.0), so we need to build from source.

build and install openjpeg 2.5.0 (optional)

• install gcc cmake ...etc
• wget https://github.com/uclouvain/openjpeg/archive/refs/tags/v2.5.0.zip
• unzip v2.5.0.zip && cd openjpeg-2.5.0/
• mkdir build && cd build
• cmake .. -DCMAKE_BUILD_TYPE=Release -DBUILD_SHARED_LIBS:bool=on
• make
• make install
• you will find openjpeg(libopenjp2) library and in /usr/local/lib /usr/local/include ...

run

• git clone https://github.com/linxlib/openjpeg
• cd openjpeg\example
• go run main.go
• then you get a jp2000.jpg in the same dir. you can change the example code to get different image file

Mac OS X

May be you don't need to install openjpeg just like linux.

• configure cgo compile environment by yourself
• if you have installed ffmpeg, so openjpeg 2.5.0 already installed, just skip the next step
• brew install openjpeg and make sure opj_decompress -h can get something like openjp2 library v2.5.0
• git clone https://github.com/linxlib/openjpeg
• cd openjpeg/example
• go run main.go
• then you get a jp2000.jpg in the same dir. you can change the example code to get different image file

TODO

• cross compile (compile executable file in only one platform (may be docker))
• add some other platforms support