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imageio-jnr\n\n[![Javadocs](https://javadoc.io/badge/de.digitalcollections.imageio/imageio-jnr.svg)](https://javadoc.io/doc/de.digitalcollections.imageio/imageio-jnr)\n[![License](https://img.shields.io/github/license/dbmdz/imageio-jnr.svg)](LICENSE)\n[![GitHub release](https://img.shields.io/github/release/dbmdz/imageio-jnr.svg)](https://github.com/dbmdz/imageio-jnr/releases)\n[![Maven Central](https://img.shields.io/maven-central/v/de.digitalcollections.imageio/imageio-jnr.svg)](https://central.sonatype.com/search?q=imageio-jnr)\n\nThis repository contains ImageIO plugins that wrap the most common native\nlibraries for various image formats with [JNR-FFI](https://github.com/jnr/jnr-ffi).\nThis has the advantage of being generally the fastest available option on the\nJVM, with the drawback that you need to make sure that the corresponding native\nlibraries are installed on the target system. However, thanks to JNR-FFI, no\ncompiler is neccessary, the plugins will directly use the installed native\nlibraries and you can install them directly from Maven Central.\n\nPlease note that the plugins need at least Java 11 and Ubuntu 20.04.\n\n## Currently available plugins\n\n|       Module      |   Format  |      Backing native library         |             Required version               | JavaDoc\n| ----------------- | --------- | ----------------------------------- | ------------------------------------------ | ---\n| imageio-openjpeg  | JPEG2000  | [OpenJPEG](http://www.openjpeg.org) | \\\u003e= 2.0 (\u003e=2.3 recommended for performance) | [![Javadocs](http://javadoc.io/badge/de.digitalcollections.imageio/imageio-openjpeg.svg)](http://javadoc.io/doc/de.digitalcollections.imageio/imageio-openjpeg)\n| imageio-turbojpeg |    JPEG   | [TurboJPEG](https://libjpeg-turbo.org/About/TurboJPEG) | \\\u003e= 1.4               | [![Javadocs](http://javadoc.io/badge/de.digitalcollections.imageio/imageio-turbojpeg.svg)](http://javadoc.io/doc/de.digitalcollections.imageio/imageio-turbojpeg)\n\n\n## Installation\nTo use the ImageIO plugins, include them in your dependencies:\n\n```xml\n\u003cdependency\u003e\n  \u003cgroupId\u003ede.digitalcollections.imageio\u003c/groupId\u003e\n  \u003cartifactId\u003eimageio-turbojpeg\u003c/artifactId\u003e\n  \u003cversion\u003e0.6.8\u003c/version\u003e\n\u003c/dependency\u003e\n\n\u003cdependency\u003e\n  \u003cgroupId\u003ede.digitalcollections.imageio\u003c/groupId\u003e\n  \u003cartifactId\u003eimageio-openjpeg\u003c/artifactId\u003e\n  \u003cversion\u003e0.6.8\u003c/version\u003e\n\u003c/dependency\u003e\n```\n\nBefore using them, make sure that you have all the required native libraries\ninstalled, e.g. on Debian-based systems:\n\n```\n$ sudo apt install libturbojpeg0 libopenjp2-7\n```\n\n\n## Supported features\n\n### imageio-openjpeg\n\n- [x] **Decoding:**\n  * [x] Tiled decoding\n  * [x] Decoding of arbitrary regions\n  * [x] Decoding of only a specific resolution\n- [x] **Encoding:**\n  * [x] Lossless compression\n  * [x] Lossy compression with user-defined quality\n  * [x] Tiled encoding\n  * [x] Encoding of multiple resolutions\n  \n  \n### imageio-turbojpeg\n- [x] **Decoding:**\n  * [x] Decoding of arbitrary regions\n  * [x] Decoding of only a specific resolution\n  * [x] Rotate image before decoding\n- [x] **Encoding:**\n  * [x] Lossy compression with user-defined quality\n\n\n## Platform-(In)Dependence\n\nJNR-FFI itself is compatible with [a large number of architectures](https://github.com/jnr/jffi/tree/master/archive),\nso you merely need to make sure that the backing native libraries are compatible with your architecture.\nBoth [OpenJPEG](https://packages.debian.org/bullseye/libopenjp2-7) and [TurboJPEG](https://packages.debian.org/bullseye/libturbojpeg0)\nare available for the majority of commonly used platforms.","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fdbmdz%2Fimageio-jnr","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fdbmdz%2Fimageio-jnr","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fdbmdz%2Fimageio-jnr/lists"}