Description

Java Image I/O reader and writer for the Google WebP image format.

License

webp-imageio is distributed under the Apache Software License version 2.0.

Add webp-imageio.jar to the classpath of your application
Ensure libwebp-jni.so or webp-jni.dll is accessible on the Java native library path (java.library.path system property)
The WebP reader and writer can be used like any other Image I/O reader and writer.

The build should work with either Maven or CMake but the Maven build incorporates unit tests to confirm that the generated library works.

The Maven build uses the cmake-maven-plugin to build the native code. The Java code, of course, just uses Maven.

Run 'mvn clean install'
The build will automatically download libwebp and compile it into the JNI library

Install CMake 2.8 or newer. CMake can be downloaded from www.cmake.org or installed using your systems package manager.
Download libwebp 0.4.2 and extract it into the project's directory
Run 'cmake .' in the root of directory of the project to generate the build scripts for your system.
Build the project using the generated build scripts. If the Java build fails and you previously built with Maven, run 'mvn clean' and try again.
The build scripts will generate a number of binaries
- java/webp-imageio.jar: JAR file containing the Image I/O reader and writer
- c/libwebp-imageio.so: the JNI library that is required by webp-imageio.jar