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author | Mike Gabriel <mike.gabriel@das-netzwerkteam.de> | 2011-11-19 15:59:16 +0100 |
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committer | Mike Gabriel <mike.gabriel@das-netzwerkteam.de> | 2011-11-19 15:59:16 +0100 |
commit | a48361b11a5abb5a345dac5ec83a8f56c4d50b74 (patch) | |
tree | a16fb870a072450bb45ee09ac4df9887bfa7f98e /nxcomp/StaticCompressor.h | |
parent | 9997e13bb583de4012914006c7507839a4e11227 (diff) | |
parent | 232dfc41d41390bfffa75ec2ed065c109fa03a0e (diff) | |
download | nx-libs-a48361b11a5abb5a345dac5ec83a8f56c4d50b74.tar.gz nx-libs-a48361b11a5abb5a345dac5ec83a8f56c4d50b74.tar.bz2 nx-libs-a48361b11a5abb5a345dac5ec83a8f56c4d50b74.zip |
Merge branch 'nxcomp'
Diffstat (limited to 'nxcomp/StaticCompressor.h')
-rw-r--r-- | nxcomp/StaticCompressor.h | 72 |
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 |