barrier/lib/synergy/CPacketStreamFilter.h

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/*
* synergy -- mouse and keyboard sharing utility
* Copyright (C) 2004 Chris Schoeneman, Nick Bolton, Sorin Sbarnea
*
* This package is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* found in the file COPYING that should have accompanied this file.
*
* This package is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
2010-06-20 17:38:51 +00:00
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef CPACKETSTREAMFILTER_H
#define CPACKETSTREAMFILTER_H
#include "CStreamFilter.h"
#include "CStreamBuffer.h"
#include "CMutex.h"
//! Packetizing stream filter
/*!
Filters a stream to read and write packets.
*/
class CPacketStreamFilter : public CStreamFilter {
public:
CPacketStreamFilter(IStream* stream, bool adoptStream = true);
~CPacketStreamFilter();
// IStream overrides
virtual void close();
virtual UInt32 read(void* buffer, UInt32 n);
virtual void write(const void* buffer, UInt32 n);
virtual void shutdownInput();
virtual bool isReady() const;
virtual UInt32 getSize() const;
protected:
// CStreamFilter overrides
virtual void filterEvent(const CEvent&);
private:
bool isReadyNoLock() const;
void readPacketSize();
bool readMore();
private:
CMutex m_mutex;
UInt32 m_size;
CStreamBuffer m_buffer;
bool m_inputShutdown;
};
#endif