bundles/org.simantics.lz4/src/org/simantics/lz4/impl/LZ4OutputStream.java

   1 /*******************************************************************************
   2  * Copyright (c) 2007, 2012 Association for Decentralized Information Management
   3  * in Industry THTH ry.
   4  * All rights reserved. This program and the accompanying materials
   5  * are made available under the terms of the Eclipse Public License v1.0
   6  * which accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *     VTT Technical Research Centre of Finland - initial API and implementation
  11  *******************************************************************************/
  12 package org.simantics.lz4.impl;
  13
  14 import java.io.File;
  15 import java.io.FileNotFoundException;
  16 import java.io.FileOutputStream;
  17 import java.io.IOException;
  18 import java.io.OutputStream;
  19 import java.nio.ByteBuffer;
  20 import java.nio.channels.WritableByteChannel;
  21
  22 import org.simantics.compressions.impl.CompressingOutputStream;
  23 import org.simantics.lz4.LZ4;
  24
  25 /**
  26  * @author Tuukka Lehtonen
  27  */
  28 public class LZ4OutputStream extends CompressingOutputStream {
  29
  30     public LZ4OutputStream(File file) throws FileNotFoundException {
  31         super(file);
  32     }
  33
  34     public LZ4OutputStream(FileOutputStream stream) {
  35         super(stream);
  36     }
  37
  38     public LZ4OutputStream(OutputStream output) {
  39         super(output);
  40     }
  41
  42
  43     public LZ4OutputStream(OutputStream stream, WritableByteChannel channel) {
  44         super(stream, channel);
  45     }
  46
  47     @Override
  48     protected int compressBound(int inputSize) {
  49         return LZ4.compressBound(inputSize);
  50     }
  51
  52     @Override
  53     protected int compress(ByteBuffer uncompressed, int uncompressedOffset, int uncompressedSize,
  54             ByteBuffer compressed, int compressedOffset) throws IOException {
  55         return LZ4.compressBuffer(uncompressed, uncompressedOffset, uncompressedSize, compressed, compressedOffset);
  56     }
  57
  58     protected ByteBuffer allocateBuffer(int capacity) {
  59         return ByteBuffer.allocateDirect(capacity);
  60     }
  61
  62 }