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+/**************************************************************************/
+/* */
+/* Copyright (c) 2001, 2010 NoMachine, http://www.nomachine.com/. */
+/* */
+/* NXCOMP, NX protocol compression and NX extensions to this software */
+/* are copyright of NoMachine. Redistribution and use of the present */
+/* software is allowed according to terms specified in the file LICENSE */
+/* which comes in the source distribution. */
+/* */
+/* Check http://www.nomachine.com/licensing.html for applicability. */
+/* */
+/* NX and NoMachine are trademarks of Medialogic S.p.A. */
+/* */
+/* All rights reserved. */
+/* */
+/**************************************************************************/
+
+#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