Merge branch 'nxcomp'

1 files changed, 72 insertions, 0 deletions

diff --git a/nxcomp/StaticCompressor.h b/nxcomp/StaticCompressor.h
new file mode 100644
index 000000000..3e5b25ca1
--- /dev/null
+++ b/nxcomp/StaticCompressor.h
@@ -0,0 +1,72 @@
+/**************************************************************************/
+/*                                                                        */
+/* 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