This is a fork from luciad/webp-imageio
- Native libs are bundled in the jar
- Published to Maven Central (
org.sejda.imageio:webp-imageioartifact) - Android support unknown (have not tested)
- windows (32, 64 bit)
- linux (64 bit)
- mac (64 bit)
Java Image I/O reader and writer for the Google WebP image format.
webp-imageio is distributed under the Apache Software License version 2.0.
- Add Maven dependency
org.sejda.imageio:webp-imageioto your application - The WebP reader and writer can be used like any other Image I/O reader and writer.
WebP images can be decoded using default settings as follows.
BufferedImage image = ImageIO.read(new File("input.webp"));
To customize the WebP decoder settings you need to create instances of ImageReader and WebPReadParam.
// Obtain a WebP ImageReader instance
ImageReader reader = ImageIO.getImageReadersByMIMEType("image/webp").next();
// Configure decoding parameters
WebPReadParam readParam = new WebPReadParam();
readParam.setBypassFiltering(true);
// Configure the input on the ImageReader
reader.setInput(new FileImageInputStream(new File("input.webp")));
// Decode the image
BufferedImage image = reader.read(0, readParam);
Encoding is done in a similar way to decoding.
You can either use the Image I/O convenience methods to encode using default settings.
// Obtain an image to encode from somewhere
BufferedImage image = ImageIO.read(new File("input.png"));
// Encode it as webp using default settings
ImageIO.write(image, "webp", new File("output.webp"));
Or you can create an instance of ImageWriter and WebPWriteParam to use custom settings.
// Obtain an image to encode from somewhere
BufferedImage image = ImageIO.read(new File("input.png"));
// Obtain a WebP ImageWriter instance
ImageWriter writer = ImageIO.getImageWritersByMIMEType("image/webp").next();
// Configure encoding parameters
WebPWriteParam writeParam = new WebPWriteParam(writer.getLocale());
writeParam.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
writeParam.setCompressionType(p.getCompressionTypes()[WebPWriteParam.LOSSLESS_COMPRESSION]);
// Configure the output on the ImageWriter
writer.setOutput(new FileImageOutputStream(new File("output.webp")));
// Encode
writer.write(null, new IIOImage(image, null, null), writeParam);
- Install CMake 2.8 or newer. CMake can be downloaded from www.cmake.org or installed using your systems package manager.
- Install VS 2017 Community and make sure the C++/Cmake dev tools modules are installed
- Create a directory called
buildin the root of the project - Open a terminal and navigate to the newly created 'build' directory
- Run
cmake ..in the 'build' directory to generate the build scripts for your system. On Windows 64 bit runcmake -DCMAKE_GENERATOR_PLATFORM=x64 ..to get a 64 bit dll. cmake --build . --config Releaseto compile the library- The compiled library can be found under the directory
build/src/main/c - Copy the compiled library to
src/main/resources/native/$platform/$bits
- Install the Android NDK.
- Run ndk-build in the
src/androiddirectory - After completion
libwebp-imageio.socan be found undersrc/android/libs/<abi>
- Run
mvn clean testin the root of the project - The compiled Java library can be found under the
builddirectory - Run
mvn release:prepare release:perform -Prelease -Darguments="-Dgpg.passphrase=secret123 -DstagingDescription=sambox"to upload to OSS Nexus, then login and publish to Maven Central
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