crashanalysercmd/PerfToolsSharedLibraries/Engine/SymbianStructuresLib/Compression/BytePair/SymbianDecompressorBytePair.cs
/*
* 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
}
}