/usr/include/openh323/t38proto.h is in libh323plus-dev 1.24.0~dfsg2-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* t38proto.h
*
* T.38 protocol handler
*
* Open Phone Abstraction Library
*
* Copyright (c) 2001 Equivalence Pty. Ltd.
*
* 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.
*
* The Original Code is Open H323 Library.
*
* The Initial Developer of the Original Code is Equivalence Pty. Ltd.
*
* Contributor(s): ______________________________________.
*
* $ Id $
*
*/
#ifndef __OPAL_T38PROTO_H
#define __OPAL_T38PROTO_H
#ifdef P_USE_PRAGMA
#pragma interface
#endif
class H323Transport;
class T38_IFPPacket;
class PASN_OctetString;
#include "ptlib_extras.h"
///////////////////////////////////////////////////////////////////////////////
/**This class handles the processing of the T.38 protocol.
*/
class OpalT38Protocol : public PObject
{
PCLASSINFO(OpalT38Protocol, PObject);
public:
/**@name Construction */
//@{
/**Create a new protocol handler.
*/
OpalT38Protocol();
/**Destroy the protocol handler.
*/
~OpalT38Protocol();
//@}
/**@name Operations */
//@{
/**This is called to clean up any threads on connection termination.
*/
virtual void CleanUpOnTermination();
/**Handle the origination of a T.38 connection.
An application would normally override this. The default just sends
"heartbeat" T.30 no signal indicator.
*/
virtual PBoolean Originate();
/**Write packet to the T.38 connection.
*/
virtual PBoolean WritePacket(
const T38_IFPPacket & pdu
);
/**Write T.30 indicator packet to the T.38 connection.
*/
virtual PBoolean WriteIndicator(
unsigned indicator
);
/**Write data packet to the T.38 connection.
*/
virtual PBoolean WriteMultipleData(
unsigned mode,
PINDEX count,
unsigned * type,
const PBYTEArray * data
);
/**Write data packet to the T.38 connection.
*/
virtual PBoolean WriteData(
unsigned mode,
unsigned type,
const PBYTEArray & data
);
/**Handle the origination of a T.38 connection.
*/
virtual PBoolean Answer();
/**Handle incoming T.38 packet.
If returns FALSE, then the reading loop should be terminated.
*/
virtual PBoolean HandlePacket(
const T38_IFPPacket & pdu
);
/**Handle lost T.38 packets.
If returns FALSE, then the reading loop should be terminated.
*/
virtual PBoolean HandlePacketLost(
unsigned nLost
);
/**Handle incoming T.38 indicator packet.
If returns FALSE, then the reading loop should be terminated.
*/
virtual PBoolean OnIndicator(
unsigned indicator
);
/**Handle incoming T.38 CNG indicator.
If returns FALSE, then the reading loop should be terminated.
*/
virtual PBoolean OnCNG();
/**Handle incoming T.38 CED indicator.
If returns FALSE, then the reading loop should be terminated.
*/
virtual PBoolean OnCED();
/**Handle incoming T.38 V.21 preamble indicator.
If returns FALSE, then the reading loop should be terminated.
*/
virtual PBoolean OnPreamble();
/**Handle incoming T.38 data mode training indicator.
If returns FALSE, then the reading loop should be terminated.
*/
virtual PBoolean OnTraining(
unsigned indicator
);
/**Handle incoming T.38 data packet.
If returns FALSE, then the reading loop should be terminated.
*/
virtual PBoolean OnData(
unsigned mode,
unsigned type,
const PBYTEArray & data
);
//@}
H323Transport * GetTransport() const { return transport; }
void SetTransport(
H323Transport * transport,
PBoolean autoDelete = TRUE
);
protected:
PBoolean HandleRawIFP(
const PASN_OctetString & pdu
);
H323Transport * transport;
PBoolean autoDeleteTransport;
PBoolean corrigendumASN;
unsigned indicatorRedundancy;
unsigned lowSpeedRedundancy;
unsigned highSpeedRedundancy;
int lastSentSequenceNumber;
H323List<PBYTEArray> redundantIFPs;
};
#endif // __OPAL_T38PROTO_H
/////////////////////////////////////////////////////////////////////////////
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