bundles/org.simantics.fastlz/src/org/simantics/fastlz/java/FastLZJavaOutputStream.java

   1 /*******************************************************************************
   2  * Copyright (c) 2007, 2010 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.fastlz.java;
  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.fastlz.FastLZ;
  24 import org.simantics.fastlz.FastLZJava;
  25
  26
  27 /**
  28  * @author Tuukka Lehtonen
  29  */
  30 public class FastLZJavaOutputStream extends CompressingOutputStream {
  31
  32     public FastLZJavaOutputStream(File file) throws FileNotFoundException {
  33         super(file);
  34     }
  35
  36     public FastLZJavaOutputStream(FileOutputStream stream) {
  37         super(stream);
  38     }
  39
  40     public FastLZJavaOutputStream(OutputStream stream) {
  41         super(stream);
  42     }
  43
  44     public FastLZJavaOutputStream(OutputStream stream, WritableByteChannel channel) {
  45         super(stream, channel);
  46     }
  47
  48     @Override
  49     protected int compressBound(int inputSize) {
  50         return FastLZ.compressBound(inputSize);
  51     }
  52
  53     @Override
  54     protected int compress(ByteBuffer uncompressed, int uncompressedOffset, int uncompressedSize,
  55             ByteBuffer compressed, int compressedOffset) throws IOException {
  56         return FastLZJava.compress(uncompressed.array(), 0, uncompressedSize, compressed.array(), 8);
  57     }
  58
  59     protected ByteBuffer allocateBuffer(int capacity) {
  60         return ByteBuffer.allocate(capacity);
  61     }
  62
  63 }