2006-02-12 15:26:46 +01:00
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/******************************************************************************\
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* Copyright (c) 2004-2006
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*
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* Author(s):
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* Volker Fischer
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*
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******************************************************************************
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*
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* This program is free software; you can redistribute it and/or modify it under
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* the terms of the GNU General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option) any later
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* version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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\******************************************************************************/
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#if !defined(PROTOCOL_H__3B123453_4344_BB2392354455IUHF1912__INCLUDED_)
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#define PROTOCOL_H__3B123453_4344_BB2392354455IUHF1912__INCLUDED_
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2006-02-19 09:14:21 +01:00
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#include <qglobal.h>
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2006-02-26 11:50:47 +01:00
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#include <qthread.h>
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2006-03-04 11:24:40 +01:00
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#include <qtimer.h>
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#include <list>
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2006-02-19 09:14:21 +01:00
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#include "global.h"
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#include "util.h"
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2006-02-12 15:26:46 +01:00
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2006-02-18 23:05:46 +01:00
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/* Definitions ****************************************************************/
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// protocol message IDs
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2006-03-07 22:26:40 +01:00
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#define PROTMESSID_ILLEGAL 0 // illegal ID
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#define PROTMESSID_ACKN 1 // acknowledge
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#define PROTMESSID_JITT_BUF_SIZE 10 // jitter buffer size
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#define PROTMESSID_REQ_JITT_BUF_SIZE 11 // request jitter buffer size
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#define PROTMESSID_PING 12 // for measuring ping time
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2006-02-18 23:05:46 +01:00
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2006-02-19 17:35:35 +01:00
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// lengths of message as defined in protocol.cpp file
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#define MESS_HEADER_LENGTH_BYTE 5 /* ID, cnt, length */
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#define MESS_LEN_WITHOUT_DATA_BYTE ( MESS_HEADER_LENGTH_BYTE + 2 /* CRC */ )
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2006-03-04 11:24:40 +01:00
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// time out for message re-send if no acknowledgement was received
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#define SEND_MESS_TIMEOUT_MS 400 // ms
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2006-02-18 23:05:46 +01:00
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2006-02-20 22:09:36 +01:00
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/* Classes ********************************************************************/
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2006-02-26 11:50:47 +01:00
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class CProtocol : public QObject
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2006-02-12 15:26:46 +01:00
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{
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2006-02-26 11:50:47 +01:00
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Q_OBJECT
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2006-02-12 15:26:46 +01:00
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public:
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2006-03-04 11:24:40 +01:00
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CProtocol();
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virtual ~CProtocol() {}
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2006-02-12 15:26:46 +01:00
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2006-02-26 11:50:47 +01:00
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void CreateJitBufMes ( const int iJitBufSize );
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2006-03-07 22:26:40 +01:00
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void CreateReqJitBufMes();
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2006-02-26 11:50:47 +01:00
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2006-03-01 20:46:44 +01:00
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void CreateAndSendAcknMess ( const int& iID, const int& iCnt );
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2006-02-26 11:50:47 +01:00
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bool ParseMessage ( const CVector<unsigned char>& vecbyData,
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const int iNumBytes );
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2006-03-04 11:24:40 +01:00
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void DeleteSendMessQueue ();
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2006-02-26 11:50:47 +01:00
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2006-03-04 11:24:40 +01:00
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protected:
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class CSendMessage
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{
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public:
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CSendMessage() : vecMessage ( 0 ), iID ( PROTMESSID_ILLEGAL ),
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iCnt ( 0 ) {}
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CSendMessage ( const CVector<uint8_t>& nMess, const int iNCnt,
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const int iNID ) : vecMessage ( nMess ), iID ( iNID ),
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iCnt ( iNCnt ) {}
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CSendMessage& operator= ( const CSendMessage& NewSendMess )
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{
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vecMessage.Init ( NewSendMess.vecMessage.Size() );
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vecMessage = NewSendMess.vecMessage;
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iID = NewSendMess.iID;
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iCnt = NewSendMess.iCnt;
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return *this;
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}
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CVector<uint8_t> vecMessage;
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int iID, iCnt;
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};
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void EnqueueMessage ( CVector<uint8_t>& vecMessage,
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const int iCnt,
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const int iID );
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2006-02-26 11:50:47 +01:00
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2006-02-20 22:09:36 +01:00
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bool ParseMessageFrame ( const CVector<uint8_t>& vecIn,
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int& iCnt,
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int& iID,
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CVector<uint8_t>& vecData );
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2006-02-19 17:35:35 +01:00
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2006-02-20 22:09:36 +01:00
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void GenMessageFrame ( CVector<uint8_t>& vecOut,
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const int iCnt,
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const int iID,
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const CVector<uint8_t>& vecData);
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2006-02-19 15:50:18 +01:00
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void PutValOnStream ( CVector<uint8_t>& vecIn,
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unsigned int& iPos,
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const uint32_t iVal,
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const unsigned int iNumOfBytes );
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2006-02-19 17:35:35 +01:00
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uint32_t GetValFromStream ( const CVector<uint8_t>& vecIn,
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unsigned int& iPos,
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const unsigned int iNumOfBytes );
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2006-02-12 15:26:46 +01:00
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2006-03-04 11:24:40 +01:00
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void SendMessage();
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uint8_t iCounter;
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int iOldRecID, iOldRecCnt;
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std::list<CSendMessage> SendMessQueue;
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2006-03-06 18:04:07 +01:00
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2006-03-04 11:24:40 +01:00
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QTimer TimerSendMess;
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QMutex Mutex;
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public slots:
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2006-03-06 18:04:07 +01:00
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void OnTimerSendMess();
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2006-02-20 22:09:36 +01:00
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2006-02-26 11:50:47 +01:00
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signals:
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2006-02-27 20:45:27 +01:00
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// transmitting
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2006-03-01 20:46:44 +01:00
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void MessReadyForSending ( CVector<uint8_t> vecMessage );
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2006-02-27 20:45:27 +01:00
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// receiving
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void ChangeJittBufSize ( int iNewJitBufSize );
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2006-03-07 22:26:40 +01:00
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void ReqJittBufSize();
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2006-02-12 15:26:46 +01:00
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};
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2006-02-18 23:05:46 +01:00
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2006-02-12 15:26:46 +01:00
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#endif /* !defined(PROTOCOL_H__3B123453_4344_BB2392354455IUHF1912__INCLUDED_) */
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