org.aoju.bus.extra.effect.provider.Lz4Provider Maven / Gradle / Ivy
/*********************************************************************************
* *
* The MIT License (MIT) *
* *
* Copyright (c) 2015-2021 aoju.org and other contributors. *
* *
* Permission is hereby granted, free of charge, to any person obtaining a copy *
* of this software and associated documentation files (the "Software"), to deal *
* in the Software without restriction, including without limitation the rights *
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell *
* copies of the Software, and to permit persons to whom the Software is *
* furnished to do so, subject to the following conditions: *
* *
* The above copyright notice and this permission notice shall be included in *
* all copies or substantial portions of the Software. *
* *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR *
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, *
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE *
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER *
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, *
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN *
* THE SOFTWARE. *
* *
********************************************************************************/
package org.aoju.bus.extra.effect.provider;
import net.jpountz.lz4.*;
import org.aoju.bus.extra.effect.EffectProvider;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
/**
* 基于lz4算法的数据解压缩
*
* @author Kimi Liu
* @version 6.2.2
* @since JDK 1.8+
*/
public class Lz4Provider implements EffectProvider {
@Override
public byte[] compress(byte[] data) throws IOException {
LZ4Factory factory = LZ4Factory.fastestInstance();
ByteArrayOutputStream byteOutput = new ByteArrayOutputStream();
LZ4Compressor compressor = factory.fastCompressor();
LZ4BlockOutputStream compressedOutput = new LZ4BlockOutputStream(byteOutput, 2048, compressor);
compressedOutput.write(data);
compressedOutput.close();
return byteOutput.toByteArray();
}
@Override
public byte[] uncompress(byte[] data) throws IOException {
LZ4Factory factory = LZ4Factory.fastestInstance();
ByteArrayOutputStream baos = new ByteArrayOutputStream();
LZ4FastDecompressor decompresser = factory.fastDecompressor();
LZ4BlockInputStream lzis = new LZ4BlockInputStream(new ByteArrayInputStream(data), decompresser);
int count;
byte[] buffer = new byte[2048];
while ((count = lzis.read(buffer)) != -1) {
baos.write(buffer, 0, count);
}
lzis.close();
return baos.toByteArray();
}
}