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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/ShapeExtension.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/ShapeExtension.h')
-rw-r--r-- | nxcomp/ShapeExtension.h | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/nxcomp/ShapeExtension.h b/nxcomp/ShapeExtension.h new file mode 100644 index 000000000..32c3b55ef --- /dev/null +++ b/nxcomp/ShapeExtension.h @@ -0,0 +1,157 @@ +/**************************************************************************/ +/* */ +/* 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 ShapeExtension_H +#define ShapeExtension_H + +#include "Message.h" + +// +// Set the verbosity level. +// + +#define PANIC +#define WARNING +#undef TEST +#undef DEBUG +#undef DUMP + +// +// Set default values. +// + +#define SHAPEEXTENSION_ENABLE_CACHE 1 +#define SHAPEEXTENSION_ENABLE_DATA 1 +#define SHAPEEXTENSION_ENABLE_SPLIT 0 +#define SHAPEEXTENSION_ENABLE_COMPRESS 1 + +#define SHAPEEXTENSION_DATA_LIMIT 3200 +#define SHAPEEXTENSION_DATA_OFFSET 20 + +#define SHAPEEXTENSION_CACHE_SLOTS 3000 +#define SHAPEEXTENSION_CACHE_THRESHOLD 10 +#define SHAPEEXTENSION_CACHE_LOWER_THRESHOLD 5 + +#define SHAPEEXTENSION_ENABLE_COMPRESS_IF_PROTO_STEP_7 0 + +// +// The message class. +// + +class ShapeExtensionMessage : public Message +{ + friend class ShapeExtensionStore; + + public: + + ShapeExtensionMessage() + { + } + + ~ShapeExtensionMessage() + { + } + + // + // Note for encoding in protocol level 1: we consider + // for this message a data offset of 4. Bytes from 5 + // to 20, if present, are taken as part of identity + // and encoded through an array of int caches. + // + + private: + + unsigned char opcode; + unsigned short data[8]; +}; + +class ShapeExtensionStore : public MessageStore +{ + public: + + ShapeExtensionStore(StaticCompressor *compressor); + + virtual ~ShapeExtensionStore(); + + virtual const char *name() const + { + return "ShapeExtension"; + } + + virtual unsigned char opcode() const + { + return opcode_; + } + + virtual unsigned int storage() const + { + return sizeof(ShapeExtensionMessage); + } + + // + // Message handling methods. + // + + public: + + virtual Message *create() const + { + return new ShapeExtensionMessage(); + } + + virtual Message *create(const Message &message) const + { + return new ShapeExtensionMessage((const ShapeExtensionMessage &) message); + } + + virtual void destroy(Message *message) const + { + delete (ShapeExtensionMessage *) message; + } + + virtual int encodeIdentity(EncodeBuffer &encodeBuffer, const unsigned char *buffer, + const unsigned int size, int bigEndian, + ChannelCache *channelCache) const; + + virtual int decodeIdentity(DecodeBuffer &decodeBuffer, unsigned char *&buffer, + unsigned int &size, int bigEndian, WriteBuffer *writeBuffer, + ChannelCache *channelCache) const; + + virtual int parseIdentity(Message *message, const unsigned char *buffer, + unsigned int size, int bigEndian) const; + + virtual int unparseIdentity(const Message *message, unsigned char *buffer, + unsigned int size, int bigEndian) const; + + virtual void updateIdentity(EncodeBuffer &encodeBuffer, const Message *message, + const Message *cachedMessage, + ChannelCache *channelCache) const; + + virtual void updateIdentity(DecodeBuffer &decodeBuffer, const Message *message, + ChannelCache *channelCache) const; + + virtual void identityChecksum(const Message *message, const unsigned char *buffer, + unsigned int size, int bigEndian) const; + + virtual void dumpIdentity(const Message *message) const; + + private: + + unsigned char opcode_; +}; + +#endif /* ShapeExtension_H */ |