Tools/Source/FrameworkTasks/org/tianocore/framework/tasks/CompressHeader.java

   1 /** @file
   2  CompressHeader class.
   3
   4  This class is to generate the compressed section header.
   5
   6  Copyright (c) 2006, Intel Corporation
   7  All rights reserved. This program and the accompanying materials
   8  are licensed and made available under the terms and conditions of the BSD License
   9  which accompanies this distribution.  The full text of the license may be found at
  10  http://opensource.org/licenses/bsd-license.php
  11
  12  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  13  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  14
  15  **/
  16
  17 package org.tianocore.framework.tasks;
  18
  19 import org.apache.tools.ant.BuildException;
  20
  21 /**
  22
  23   Internal class: This class is to generate the compressed section header.
  24
  25 **/
  26 public class CompressHeader {
  27
  28     /**
  29       CommonSectionHeader
  30
  31       This class define the compressed header structor.
  32
  33     **/
  34     public class CommonSectionHeader {
  35         byte[] Size = new byte[3];
  36         byte   type;
  37     }
  38
  39     ///
  40     /// Section header.
  41     ///
  42     public CommonSectionHeader SectionHeader = new CommonSectionHeader();
  43
  44     ///
  45     /// Length of uncompress section in byte.
  46     ///
  47     public int                 UncompressLen;
  48     ///
  49     /// Compress type.
  50     ///
  51     public byte                CompressType;
  52
  53     ///
  54     /// The size of compress header in byte.
  55     ///
  56     public int GetSize (){
  57         return 9;
  58     }
  59
  60     ///
  61     /// Write class member to buffer.
  62     ///
  63     public void StructToBuffer (byte[] Buffer){
  64         if (Buffer.length != GetSize()) {
  65             throw new BuildException ("CompressHeader Buffer size is not correct!");
  66         }
  67         for (int i = 0; i < 3; i++){
  68             Buffer[i] = SectionHeader.Size[i];
  69         }
  70         Buffer[3] = SectionHeader.type;
  71         Buffer[4] = (byte)(UncompressLen  & 0xff);
  72         Buffer[5] = (byte)((UncompressLen & 0xff00)>>8);
  73         Buffer[6] = (byte)((UncompressLen & 0xff0000)>>16);
  74         Buffer[7] = (byte)((UncompressLen & 0xff000000)>>24);
  75         Buffer[8] = CompressType;
  76     }
  77
  78 }