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diff --git a/conversion/ecwmemfs.hh b/conversion/ecwmemfs.hh
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+/*
+* This file is part of rasdaman community.
+*
+* Rasdaman community is free software: you can redistribute it and/or modify
+* it under the terms of the GNU General Public License as published by
+* the Free Software Foundation, either version 3 of the License, or
+* (at your option) any later version.
+*
+* Rasdaman community is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+* GNU General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with rasdaman community.  If not, see <http://www.gnu.org/licenses/>.
+*
+* Copyright 2003, 2004, 2005, 2006, 2007, 2008, 2009 Peter Baumann /
+rasdaman GmbH.
+*
+* For more information please see <http://www.rasdaman.org>
+* or contact Peter Baumann via <baumann@rasdaman.com>.
+*/
+
+#ifndef _ECWMEMFS_HH_
+#define _ECWMEMFS_HH_
+
+#include "raslib/mddtypes.hh"
+
+class MemoryFileSystem
+	{
+	public:
+		enum m_Error
+			{
+			No_Error = 0,
+			Error = 1
+			};
+
+		MemoryFileSystem();
+
+		///open file an read into memory - completely
+		m_Error open(const char* fileName);
+
+		///use this memory chunk with mSize bytes length
+		m_Error open(const char* memorySource, r_Bytes mSize);
+
+		///close and deinitialise (delete only my own data)
+		m_Error close();
+
+		///call close
+		~MemoryFileSystem();
+
+		///read bSize bytes into buffer, only if bSize bytes are available
+		m_Error read(void* buffer, r_Bytes bSize);
+
+		///get current position
+		unsigned long long tell();
+
+		///go to offset bytes from begining of memory
+		m_Error seek(unsigned long long offset);
+
+		///if you use open(const* char) and the pointer is memorySrcName then no file will be read but this pointer
+		static const char* memorySrc;
+
+		///file names which point to this will not read from file system but from memorySrc
+		static const char* memorySrcName;
+
+		///the length of the memorySrc chunk must be specified in memoryLength
+		static r_Bytes memorySrcLength;
+
+	private:
+
+		///my memory block
+		char* source;
+		///my current position
+		char* current;
+		///am i closed
+		bool closed;
+		///do i own my memory data
+		bool owner;
+		///how long is my memory data
+		r_Bytes length;
+	};
+
+#endif