JNI bindings for Zstd native library that provides fast and high compression lossless algorithm for Android, Java and all JVM languages:
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static compress/decompress methods
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implementation of InputStream and OutputStream for transparent compression of data streams fully compatible with the "zstd" program.
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minimal performance overhead
Zstd, short for Zstandard, is a new lossless compression algorithm, which provides both good compression ratio and speed for your standard compression needs. "Standard" translates into everyday situations which neither look for highest possible ratio (which LZMA and ZPAQ cover) nor extreme speeds (which LZ4 covers).
Zstd is developed by Yann Collet and the source is available at: https://github.com/facebook/zstd
The motivation for development, the algorithm used and its properties are explained in the blog post that introduces the library: http://fastcompression.blogspot.com/2015/01/zstd-stronger-compression-algorithm.html
Zstd is production ready with a stable format.
Zstd-jni is tracking the release branch of Zstd (master) with compatibility support for the legacy formats (since version 0.4).
Zstd-jni version uses the base Zstd version with Zstd-jni release appended with a dash, e.g. "1.2.0-2" is the second Zstd-jni release based on Zstd version 1.2.0.
The Java classes cannot be renamed/minimized/relocated. JVM linking the native library depends on the class name that is trying to link the native part, so changing the class names will lead to failed linking at runtime.
Zstd-jni uses SBT for building the library and running the tests.
The build system depends on Scala and the tests depend on ScalaTest and ScalaCheck but the produced JAR does not have any dependencies. It also embeds the native library.
Note: For the moment the project depends on a local build of sbt-java-module-info
v0.5.2, as that version is not published to Maven. Before compiling, you need to publish it locally:
$ cd sbt-java-module-info && ./sbt publishLocal && cd -
Create package:
$ ./sbt compile package
Insatll package locally into maven repository:
$ ./install-jar.sh
The code for these JNI bindings is licenced under 2-clause BSD license. The native Zstd library is licensed under 3-clause BSD license or GPL2. See the LICENSE file and LICENSE and COPYRIGHT in src/main/native for full copyright and conditions.