org.aoju.bus.extra.effect.provider.LzoProvider Maven / Gradle / Ivy
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package org.aoju.bus.extra.effect.provider;
import org.anarres.lzo.*;
import org.aoju.bus.extra.effect.EffectProvider;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
/**
* 基于lzo算法的数据解压缩
*
* @author Kimi Liu
* @version 6.2.2
* @since JDK 1.8+
*/
public class LzoProvider implements EffectProvider {
@Override
public byte[] compress(byte[] data) throws IOException {
LzoCompressor compressor = LzoLibrary.getInstance().newCompressor(LzoAlgorithm.LZO1X, null);
ByteArrayOutputStream os = new ByteArrayOutputStream();
LzoOutputStream cs = new LzoOutputStream(os, compressor);
cs.write(data);
cs.close();
return os.toByteArray();
}
@Override
public byte[] uncompress(byte[] data) throws IOException {
LzoDecompressor decompressor = LzoLibrary.getInstance().newDecompressor(LzoAlgorithm.LZO1X, null);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ByteArrayInputStream is = new ByteArrayInputStream(data);
LzoInputStream us = new LzoInputStream(is, decompressor);
int count;
byte[] buffer = new byte[2048];
while ((count = us.read(buffer)) != -1) {
baos.write(buffer, 0, count);
}
return baos.toByteArray();
}
}