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authorReinhard Tartler <siretart@tauware.de>2011-11-13 09:27:51 +0100
committerReinhard Tartler <siretart@tauware.de>2011-11-13 09:27:51 +0100
commit3e924126b56c4d421e8263d25f6b14aa4ceed047 (patch)
tree921403de7b834fb1ac89f97d84ce105e0b487051 /nxcomp/ShapeExtension.h
parenta840692edc9c6d19cd7c057f68e39c7d95eb767d (diff)
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Imported nxcomp-3.1.0-4.tar.gznxcomp/3.1.0-4
Summary: Imported nxcomp-3.1.0-4.tar.gz Keywords: Imported nxcomp-3.1.0-4.tar.gz into Git repository
Diffstat (limited to 'nxcomp/ShapeExtension.h')
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+/**************************************************************************/
+/* */
+/* Copyright (c) 2001, 2007 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 NoMachine S.r.l. */
+/* */
+/* 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 */