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

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