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diff --git a/nxcomp/src/StaticCompressor.h b/nxcomp/src/StaticCompressor.h
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+/**************************************************************************/
+/*                                                                        */
+/* Copyright (c) 2001, 2011 NoMachine (http://www.nomachine.com)          */
+/* Copyright (c) 2008-2014 Oleksandr Shneyder <o.shneyder@phoca-gmbh.de>  */
+/* Copyright (c) 2014-2016 Ulrich Sibiller <uli42@gmx.de>                 */
+/* Copyright (c) 2014-2016 Mihai Moldovan <ionic@ionic.de>                */
+/* Copyright (c) 2011-2016 Mike Gabriel <mike.gabriel@das-netzwerkteam.de>*/
+/* Copyright (c) 2015-2016 Qindel Group (http://www.qindel.com)           */
+/*                                                                        */
+/* NXCOMP, NX protocol compression and NX extensions to this software     */
+/* are copyright of the aforementioned persons and companies.             */
+/*                                                                        */
+/* Redistribution and use of the present software is allowed according    */
+/* to terms specified in the file LICENSE.nxcomp which comes in the       */
+/* source distribution.                                                   */
+/*                                                                        */
+/* All rights reserved.                                                   */
+/*                                                                        */
+/* NOTE: This software has received contributions from various other      */
+/* contributors, only the core maintainers and supporters are listed as   */
+/* copyright holders. Please contact us, if you feel you should be listed */
+/* as copyright holder, as well.                                          */
+/*                                                                        */
+/**************************************************************************/
+
+#ifndef StaticCompressor_H
+#define StaticCompressor_H
+
+#include "Z.h"
+
+class EncodeBuffer;
+class DecodeBuffer;
+
+class StaticCompressor
+{
+  public:
+
+  StaticCompressor(int compressionLevel, int compressionThreshold);
+
+  ~StaticCompressor();
+
+  int compressBuffer(const unsigned char *plainBuffer, const unsigned int plainSize,
+                         unsigned char *&compressedBuffer, unsigned int &compressedSize,
+                             EncodeBuffer &encodeBuffer);
+
+  int compressBuffer(const unsigned char *plainBuffer, const unsigned int plainSize,
+                         unsigned char *&compressedBuffer, unsigned int &compressedSize);
+
+  int decompressBuffer(unsigned char *plainBuffer, unsigned int plainSize,
+                           const unsigned char *&compressedBuffer, unsigned int &compressedSize,
+                               DecodeBuffer &decodeBuffer);
+
+  int decompressBuffer(unsigned char *plainBuffer, const unsigned int plainSize,
+                           const unsigned char *compressedBuffer, const unsigned compressedSize);
+
+  static int isCompressionLevel(int compressionLevel)
+  {
+    return (compressionLevel == Z_DEFAULT_COMPRESSION ||
+                (compressionLevel >= Z_NO_COMPRESSION &&
+                     compressionLevel <= Z_BEST_COMPRESSION));
+  }
+
+  int fullReset()
+  {
+    return (deflateReset(&compressionStream_) == Z_OK &&
+                inflateReset(&decompressionStream_) == Z_OK);
+  }
+
+  private:
+
+  z_stream compressionStream_;
+  z_stream decompressionStream_;
+
+  unsigned char *buffer_;
+  unsigned int  bufferSize_;
+
+  int threshold_;
+};
+
+#endif