h224handler.h

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/*
 * h224handler.h
 *
 * H.224 protocol handler implementation for the OpenH323 Project.
 *
 * Copyright (c) 2006 Network for Educational Technology, ETH Zurich.
 * Written by Hannes Friederich.
 *
 * The contents of this file are subject to the Mozilla Public License
 * Version 1.0 (the "License"); you may not use this file except in
 * compliance with the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS"
 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
 * the License for the specific language governing rights and limitations
 * under the License.
 *
 * Contributor(s): ______________________________________.
 *
 * $Revision: 20177 $
 * $Author: csoutheren $
 * $Date: 2008-05-06 05:55:40 +0000 (Tue, 06 May 2008) $
 */

#ifndef __OPAL_H224HANDLER_H
#define __OPAL_H224HANDLER_H

#ifdef P_USE_PRAGMA
#pragma interface
#endif

#ifndef _PTLIB_H
#include <ptlib.h>
#endif

#include <opal/connection.h>
#include <opal/transports.h>
#include <rtp/rtp.h>
#include <h224/h281handler.h>

#define H281_CLIENT_ID 0x01

class H224_Frame;

#if 0

class OpalH224ReceiverThread : public PThread
{
  PCLASSINFO(OpalH224ReceiverThread, PThread);
        
public:
        
  OpalH224ReceiverThread(OpalH224Handler *h224Handler, RTP_Session & rtpSession);
  ~OpalH224ReceiverThread();
        
  virtual void Main();
        
  void Close();
        
private:
                
  OpalH224Handler *h224Handler;
  mutable PMutex inUse;
  unsigned timestamp;
  RTP_Session & rtpSession;
  PBoolean terminate;
};

class OpalH281Handler;
class OpalConnection;

class OpalH224Handler : public PObject
{
  PCLASSINFO(OpalH224Handler, PObject);
        
public:
        
  OpalH224Handler(OpalRTPConnection & connection, unsigned sessionID);
  ~OpalH224Handler();
        
  virtual void StartTransmit();
  virtual void StopTransmit();
  virtual void StartReceive();
  virtual void StopReceive();
        
  PBoolean SendClientList();
  PBoolean SendExtraCapabilities();
  PBoolean SendClientListCommand();
  PBoolean SendExtraCapabilitiesCommand(BYTE clientID);

  PBoolean SendExtraCapabilitiesMessage(BYTE clientID, BYTE *data, PINDEX length);

  PBoolean TransmitClientFrame(BYTE clientID, H224_Frame & frame);
        
  virtual PBoolean OnReceivedFrame(H224_Frame & frame);
  virtual PBoolean OnReceivedCMEMessage(H224_Frame & frame);
  virtual PBoolean OnReceivedClientList(H224_Frame & frame);
  virtual PBoolean OnReceivedClientListCommand();
  virtual PBoolean OnReceivedExtraCapabilities(H224_Frame & frame);
  virtual PBoolean OnReceivedExtraCapabilitiesCommand();
        
  PMutex & GetTransmitMutex() { return transmitMutex; }
        
  RTP_Session * GetSession() const { return session; }
        
  virtual OpalH224ReceiverThread * CreateH224ReceiverThread();
        
  OpalH281Handler *GetH281Handler() { return h281Handler; }
        
protected:

  RTP_Session * session;

  PBoolean canTransmit;
  PMutex transmitMutex;
  RTP_DataFrame *transmitFrame;
  BYTE transmitBitIndex;
  PTime *transmitStartTime;
        
  OpalH224ReceiverThread *receiverThread;
        
  OpalH281Handler *h281Handler;
        
private:
                
  void TransmitFrame(H224_Frame & frame);
        
};

#endif //


#endif // __OPAL_H224HANDLER_H

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