--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/crashanalysercmd/PerfToolsSharedLibraries/Engine/SymbianStructuresLib/Compression/BytePair/SymbianDecompressorBytePair.cs	Thu Feb 11 15:50:58 2010 +0200
@@ -0,0 +1,83 @@
+/*
+* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). 
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+* 
+* Description:
+*
+*/
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.IO;
+using System.Runtime.InteropServices;
+using SymbianStructuresLib.Compression.Common;
+
+namespace SymbianStructuresLib.Compression.BytePair
+{
+    public class SymbianDecompressorBytePair : SymbianDecompressor
+    {
+        #region Constructors
+        public SymbianDecompressorBytePair()
+        {
+        }
+        #endregion
+
+        #region From SymbianDecompressor
+        public override TSymbianCompressionType Type
+        {
+            get { return TSymbianCompressionType.EBytePair; }
+        }
+
+        protected override int DoDecompressRaw( IntPtr aSource, int aSourceLength, IntPtr aDestination, int aDestinationLength )
+ 	    {
+            int ret = SymbianBytePairUnpackRaw( aSource, aSourceLength, aDestination, aDestinationLength );
+            return ret;
+        }
+
+        protected override int DoDecompressImage( IntPtr aSource, int aSourceLength, IntPtr aDestination, int aDestinationLength, out int aAmountOfSourceRead )
+        {
+            int ret = 0;
+            aAmountOfSourceRead = 0;
+            IntPtr pAmountSrcRead = Marshal.AllocHGlobal( 4 );
+            //
+            try
+            {
+                ret = SymbianBytePairUnpackImage( aSource, aSourceLength, aDestination, aDestinationLength, pAmountSrcRead );
+                aAmountOfSourceRead = (int) Marshal.PtrToStructure( pAmountSrcRead, typeof( Int32 ) );
+            }
+            finally
+            {
+                Marshal.FreeHGlobal( pAmountSrcRead );
+            }
+            //
+            return ret;
+        }
+        #endregion
+
+        #region Properties
+        #endregion
+
+        #region Native methods
+        [DllImport("SymbianNativeTools.dll")]
+        public static extern int SymbianBytePairUnpackRaw( IntPtr aSource, int aSourceSize, IntPtr aDest, int aDestSize );
+        [DllImport("SymbianNativeTools.dll")]
+        public static extern int SymbianBytePairUnpackImage( IntPtr aSource, 
+                                                             int aSourceSize, 
+                                                             IntPtr aDest, 
+                                                             int aDestSize, 
+                                                             IntPtr aAmountOfSourceRead );
+        #endregion
+
+        #region Data members
+        #endregion
+    }
+}