--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/crashanalysercmd/PerfToolsSharedLibraries/Engine/SymbianStructuresLib/Compression/Common/SymbianDecompressor.cs	Thu Feb 11 15:50:58 2010 +0200
@@ -0,0 +1,133 @@
+
+/*
+* 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 SymbianUtils;
+using SymbianStructuresLib.Compression.BytePair;
+using SymbianStructuresLib.Compression.Inflate;
+
+namespace SymbianStructuresLib.Compression.Common
+{
+    public abstract class SymbianDecompressor : DisposableObject
+    {
+        #region Factory
+        public static SymbianDecompressor NewByType( TSymbianCompressionType aType )
+        {
+            SymbianDecompressor ret = null;
+            //
+            switch ( aType )
+            {
+            case TSymbianCompressionType.EBytePair:
+                ret = new SymbianDecompressorBytePair();
+                break;
+            case TSymbianCompressionType.EDeflate:
+                ret = new SymbianDecompressorInflate();
+                break;
+            }
+            //
+            return ret;
+        }
+        #endregion
+
+        #region Constructors
+        protected SymbianDecompressor()
+        {
+        }
+        #endregion
+
+        #region Framework API
+        public abstract TSymbianCompressionType Type
+        {
+            get;
+        }
+
+        protected abstract int DoDecompressRaw( IntPtr aSource, int aSourceLength, IntPtr aDestination, int aDestinationLength );
+
+        protected virtual int DoDecompressImage( IntPtr aSource, int aSourceLength, IntPtr aDestination, int aDestinationLength, out int aAmountOfSourceRead )
+        {
+            throw new NotImplementedException();
+        }
+        #endregion
+
+        #region API
+        public int DecompressRaw( byte[] aSource, byte[] aDestination )
+        {
+            if ( aSource == null || aDestination == null )
+            {
+                throw new ArgumentException( "Must supply data buffers" );
+            }
+            //
+            int ret = 0;
+            //
+            unsafe
+            {
+                fixed ( byte* source = aSource )
+                {
+                    fixed ( byte* dest = aDestination )
+                    {
+                        IntPtr pSource = new IntPtr( source );
+                        IntPtr pDest = new IntPtr( dest );
+                        //
+                        ret = DoDecompressRaw( pSource, aSource.Length, pDest, aDestination.Length );
+                    }
+                }
+            }
+            //
+            return ret;
+        }
+
+        public int DecompressImage( byte[] aSource, byte[] aDestination, out int aAmountOfSourceRead )
+        {
+            if ( aSource == null || aDestination == null )
+            {
+                throw new ArgumentException( "Must supply data buffers" );
+            }
+            //
+            int ret = 0;
+            //
+            unsafe
+            {
+                fixed ( byte* source = aSource )
+                {
+                    fixed ( byte* dest = aDestination )
+                    {
+                        IntPtr pSource = new IntPtr( source );
+                        IntPtr pDest = new IntPtr( dest );
+                        //
+                        ret = DoDecompressImage( pSource, aSource.Length, pDest, aDestination.Length, out aAmountOfSourceRead );
+                    }
+                }
+            }
+            //
+            return ret;
+        }
+        #endregion
+
+        #region Properties
+        #endregion
+
+        #region Internal methods
+        #endregion
+
+        #region Data members
+        #endregion
+    }
+}