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t38engine.cxx
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t38engine.cxx
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/*
* t38engine.cxx
*
* T38FAX Pseudo Modem
*
* Copyright (c) 2001-2010 Vyacheslav Frolov
*
* Open H323 Project
*
* 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 Vyacheslav Frolov
*
* Contributor(s): Equivalence Pty ltd
*
* $Log: t38engine.cxx,v $
* Revision 1.73 2010-10-12 16:46:25 vfrolov
* Implemented fake streams
*
* Revision 1.73 2010/10/12 16:46:25 vfrolov
* Implemented fake streams
*
* Revision 1.72 2010/10/08 06:09:53 vfrolov
* Added parameter assert to SetPreparePacketTimeout()
*
* Revision 1.71 2010/10/06 16:54:19 vfrolov
* Redesigned engine opening/closing
*
* Revision 1.70 2010/09/22 15:39:19 vfrolov
* Moved ResetModemState() to EngineBase
* Replaced _ResetModemState() by OnResetModemState()
*
* Revision 1.69 2010/09/08 17:22:23 vfrolov
* Redesigned modem engine (continue)
*
* Revision 1.68 2010/04/22 15:41:30 vfrolov
* Fixed +FRS delay if remote does not send no-signal indicator
*
* Revision 1.67 2010/03/23 08:58:14 vfrolov
* Fixed issues with +FTS and +FRS
*
* Revision 1.66 2010/03/18 08:42:17 vfrolov
* Added named tracing of data types
*
* Revision 1.65 2010/02/27 11:11:54 vfrolov
* Added missing redo
*
* Revision 1.64 2010/01/28 10:27:03 vfrolov
* Added handling T.38 CED indication
*
* Revision 1.63 2009/12/02 09:06:42 vfrolov
* Added a short delay after transmitting of signal before call clearing
*
* Revision 1.62 2009/11/26 07:21:37 vfrolov
* Added delay between transmitting of signals
*
* Revision 1.61 2009/11/19 14:48:28 vfrolov
* Moved common code to class EngineBase
*
* Revision 1.60 2009/11/19 11:18:16 vfrolov
* Added handling T.38 CED indication
*
* Revision 1.59 2009/11/18 19:08:47 vfrolov
* Moved common code to class EngineBase
*
* Revision 1.58 2009/11/10 09:56:54 vfrolov
* Fixed isCarrierIn handling
*
* Revision 1.57 2009/11/10 08:13:38 vfrolov
* Fixed race condition on re-opening T38Engine
*
* Revision 1.56 2009/11/06 10:19:29 vfrolov
* Fixed indication handling after re-opening T38Engine
*
* Revision 1.55 2009/10/27 18:53:49 vfrolov
* Added ability to re-open T38Engine
* Added ability to prepare IFP packets with adaptive delay/period
*
* Revision 1.54 2009/07/27 16:21:24 vfrolov
* Moved h323lib specific code to h323lib directory
*
* Revision 1.53 2009/07/03 09:12:04 vfrolov
* Included opal/buildopts.h
*
* Revision 1.52 2009/07/02 15:15:43 vfrolov
* Fixed handling 5 sec buffer empty event for +FTM command
*
* Revision 1.51 2009/07/02 13:03:22 vfrolov
* Fixed aborting +FTM immediately after CONNECT if no data in the buffer
*
* Revision 1.50 2009/02/05 14:15:18 vfrolov
* Added missing cbpOutBufNoFull notification (for ECM)
*
* Revision 1.49 2009/01/27 14:00:50 vfrolov
* Added missing startedTimeOutBufEmpty initialization
*
* Revision 1.48 2008/09/24 14:51:45 frolov
* Added 5 sec. timeout for DCE's transmit buffer empty
*
* Revision 1.47 2008/09/10 11:15:00 frolov
* Ported to OPAL SVN trunk
*
* Revision 1.46 2007/05/24 17:03:54 vfrolov
* Added more PTRACING checks
*
* Revision 1.45 2007/05/10 10:40:33 vfrolov
* Added ability to continuously resend last UDPTL packet
*
* Revision 1.44 2007/05/03 09:21:47 vfrolov
* Added compile time optimization for original ASN.1 sequence
* in T.38 (06/98) Annex A or for CORRIGENDUM No. 1 fix
*
* Revision 1.43 2007/04/26 13:57:17 vfrolov
* Changed logging for OPAL
*
* Revision 1.42 2007/04/11 14:19:15 vfrolov
* Changed for OPAL
*
* Revision 1.41 2007/03/23 10:14:36 vfrolov
* Implemented voice mode functionality
*
* Revision 1.40 2006/12/11 11:19:48 vfrolov
* Fixed race condition with modem Callback
*
* Revision 1.39 2006/12/07 10:50:39 vfrolov
* Fixed possible dead lock
*
* Revision 1.38 2006/10/20 10:04:00 vfrolov
* Added code for ignoring repeated indicators
* Added code for sending repeated indicators (disabled by default)
*
* Revision 1.37 2006/07/05 04:37:17 csoutheren
* Applied 1488904 - SetPromiscuous(AcceptFromLastReceivedOnly) for T.38
* Thanks to Vyacheslav Frolov
*
* Revision 1.36 2005/07/21 06:49:02 vfrolov
* Added missing CompleteEncoding()
*
* Revision 1.35 2005/07/18 11:39:47 vfrolov
* Changed for OPAL
*
* Revision 1.34 2005/03/03 16:09:06 vfrolov
* Fixed memory leak
*
* Revision 1.33 2005/02/04 10:18:49 vfrolov
* Fixed warnings for No Trace build
*
* Revision 1.32 2005/02/03 11:32:12 vfrolov
* Fixed MSVC compile warnings
*
* Revision 1.31 2004/08/24 16:12:10 vfrolov
* Fixed bit counter overflow
*
* Revision 1.30 2004/07/06 16:07:24 vfrolov
* Included ptlib.h for precompiling
*
* Revision 1.29 2004/06/18 15:06:29 vfrolov
* Fixed race condition by adding mutex for modemCallback
*
* Revision 1.28 2004/03/01 17:10:32 vfrolov
* Fixed duplicated mutexes
* Added volatile to T38Mode
*
* Revision 1.27 2003/12/04 16:09:58 vfrolov
* Implemented FCS generation
* Implemented ECM support
*
* Revision 1.26 2003/01/08 16:55:52 vfrolov
* Added cbpOutBufNoFull and isOutBufFull()
* Added data speed tracing
* Fixed "thread did not terminate" (added msMaxOutDelay)
* Discarded useless name tracing
*
* Revision 1.25 2002/12/30 12:49:46 vfrolov
* Added tracing thread's CPU usage (Linux only)
*
* Revision 1.24 2002/12/20 10:13:08 vfrolov
* Implemented tracing with PID of thread (for LinuxThreads)
* or ID of thread (for other POSIX Threads)
*
* Revision 1.23 2002/12/19 14:19:20 vfrolov
* Added missing brackets (fixed all CPU usage reported by Markus Storm)
*
* Revision 1.22 2002/12/19 11:54:43 vfrolov
* Removed DecodeIFPPacket() and utilized HandleRawIFP()
*
* Revision 1.21 2002/11/28 09:17:31 vfrolov
* Added missing const
*
* Revision 1.20 2002/11/21 07:16:46 robertj
* Changed promiscuous mode to be three way. Fixes race condition in gkserver
* which can cause crashes or more PDUs to be sent to the wrong place.
*
* Revision 1.19 2002/11/18 23:12:17 craigs
* Removed reference to t38old.h
*
* Revision 1.18 2002/11/18 23:01:58 craigs
* Changed name of pre CORRIGENDUM ASN
*
* Revision 1.17 2002/11/18 22:57:53 craigs
* Added patches from Vyacheslav Frolov for CORRIGENDUM
*
* Revision 1.16 2002/11/15 07:43:52 vfrolov
* Do not wait no-signal if received *-sig-end
* Fixed compiler warnings
*
* Revision 1.15 2002/05/22 15:21:26 vfrolov
* Added missed enableTimeout check
* Fixed bad ifp tracing bug
*
* Revision 1.14 2002/05/22 12:01:45 vfrolov
* Implemented redundancy error protection scheme
*
* Revision 1.13 2002/05/15 16:05:17 vfrolov
* Changed algorithm of handling isCarrierIn
* Removed delay after sending dtSilence
*
* Revision 1.12 2002/05/08 16:33:16 vfrolov
* Adjusted post training delays
*
* Revision 1.11 2002/05/07 11:06:12 vfrolov
* Discarded const from ModemCallbackWithUnlock()
*
* Revision 1.10 2002/05/07 10:15:38 vfrolov
* Fixed dead lock on modemCallback
*
* Revision 1.9 2002/04/19 13:58:59 vfrolov
* Added SendOnIdle()
*
* Revision 1.8 2002/03/01 09:02:04 vfrolov
* Added Copyright header
* Added name name to trace messages
*
* Revision 1.7 2002/02/11 16:46:18 vfrolov
* Discarded transport arg from Originate() and Answer()
* Thanks to Christopher Curtis
*
* Revision 1.6 2002/01/10 06:10:03 craigs
* Added MPL header
*
* Revision 1.5 2002/01/06 03:48:45 craigs
* Added changes to support efax 0.9
* Thanks to Vyacheslav Frolov
*
* Revision 1.4 2002/01/03 21:36:42 craigs
* Added additional logic to work with efax
* Thanks to Vyacheslav Frolov
*
* Revision 1.3 2002/01/02 04:50:34 craigs
* General formatting cleanups whilst looking for efax problem
*
* Revision 1.2 2002/01/01 23:59:52 craigs
* Lots of additional implementation thanks to Vyacheslav Frolov
*
*/
#include <ptlib.h>
#ifdef USE_OPAL
#include <opal/buildopts.h>
#include <asn/t38.h>
#else
#include <t38.h>
#endif
#include "t38engine.h"
#define new PNEW
#define T38I(t30_indicator) T38_Type_of_msg_t30_indicator::t30_indicator
#define T38D(msg_data) T38_Type_of_msg_data::msg_data
#define T38F(field_type) T38_Data_Field_subtype_field_type::field_type
#define msMaxOutDelay (msPerOut*5)
#ifdef P_LINUX
#define mySleep(ms) usleep((ms) * 1000L)
#else
#define mySleep(ms) PThread::Sleep(ms)
#endif
///////////////////////////////////////////////////////////////
enum StateOut {
stOutIdle,
stOutCedWait,
stOutSilenceWait,
stOutIndWait,
stOutData,
stOutHdlcFcs,
stOutDataNoSig,
stOutNoSig,
};
///////////////////////////////////////////////////////////////
enum StateModem {
stmIdle,
stmOutMoreData,
stmOutNoMoreData,
stmInWaitSilence,
stmInWaitData,
stmInReadyData,
stmInRecvData,
};
#define isStateModemOut() (stateModem >= stmOutMoreData && stateModem <= stmOutNoMoreData)
#define isStateModemIn() (stateModem >= stmInWaitData && stateModem <= stmInRecvData)
///////////////////////////////////////////////////////////////
class ModStream
{
public:
ModStream(const MODPARS &_ModPars);
~ModStream();
void PushBuf();
PBoolean DeleteFirstBuf();
PBoolean PopBuf();
int GetData(void *pBuf, PINDEX count);
int PutData(const void *pBuf, PINDEX count);
PBoolean SetDiag(int diag);
PBoolean PutEof(int diag = 0);
void Move(ModStream &from);
DataStream *firstBuf;
DataStreamQ bufQ;
DataStream *lastBuf; // if not NULL then shold be in bufQ or firstBuf
MODPARS ModPars;
HDLC hdlc;
};
ModStream::ModStream(const MODPARS &_ModPars) : firstBuf(NULL), lastBuf(NULL), ModPars(_ModPars)
{
}
ModStream::~ModStream()
{
if (firstBuf != NULL) {
PTRACE(1, "ModStream::~ModStream firstBuf != NULL, clean");
delete firstBuf;
}
PTRACE_IF(1, bufQ.GetSize() > 0,
"ModStream::~ModStream bufQ.GetSize()=" << bufQ.GetSize() << ", clean");
}
void ModStream::PushBuf()
{
lastBuf = new DataStream();
bufQ.Enqueue(lastBuf);
}
PBoolean ModStream::DeleteFirstBuf()
{
if (firstBuf != NULL) {
if (lastBuf == firstBuf)
lastBuf = NULL;
delete firstBuf;
firstBuf = NULL;
return TRUE;
}
return FALSE;
}
PBoolean ModStream::PopBuf()
{
if (DeleteFirstBuf()) {
PTRACE(1, "ModStream::PopBuf DeleteFirstBuf(), clean");
}
firstBuf = bufQ.Dequeue();
if (!firstBuf)
return FALSE;
if (ModPars.dataType == EngineBase::dtRaw && ModPars.dataTypeT38 == EngineBase::dtHdlc) {
hdlc = HDLC();
hdlc.PutHdlcData(firstBuf);
hdlc.GetRawStart(10);
}
return TRUE;
}
int ModStream::GetData(void *pBuf, PINDEX count)
{
if (firstBuf == NULL) {
myPTRACE(1, "ModStream::GetData firstBuf == NULL");
return -1;
}
if (ModPars.dataType == EngineBase::dtRaw && ModPars.dataTypeT38 == EngineBase::dtHdlc) {
int len;
while ((len = hdlc.GetData(pBuf, count)) < 0) {
DataStream *_firstBuf;
if ((_firstBuf = bufQ.Dequeue()) != NULL) {
DeleteFirstBuf();
firstBuf = _firstBuf;
hdlc.PutHdlcData(firstBuf);
hdlc.GetRawStart();
} else {
if ((firstBuf->GetDiag() & EngineBase::diagNoCarrier) == 0) {
DeleteFirstBuf();
return 0;
}
return -1;
}
}
return len;
}
if (ModPars.dataTypeT38 != ModPars.dataType) {
myPTRACE(1, "ModStream::GetData ModPars.dataType("
<< ModPars.dataType
<< ") != ModPars.dataTypeT38("
<< ModPars.dataTypeT38
<< ")");
return -1;
}
return firstBuf->GetData(pBuf, count);
}
int ModStream::PutData(const void *pBuf, PINDEX count)
{
if( lastBuf == NULL ) {
myPTRACE(1, "ModStream::PutData lastBuf == NULL");
return -1;
}
return lastBuf->PutData(pBuf, count);
}
PBoolean ModStream::SetDiag(int diag)
{
if( lastBuf == NULL )
return FALSE;
lastBuf->SetDiag(lastBuf->GetDiag() | diag);
return TRUE;
}
PBoolean ModStream::PutEof(int diag)
{
if( lastBuf == NULL )
return FALSE;
lastBuf->SetDiag(lastBuf->GetDiag() | diag).PutEof();
lastBuf = NULL;
return TRUE;
}
void ModStream::Move(ModStream &from)
{
if( from.firstBuf != NULL ) {
bufQ.Enqueue(from.firstBuf);
from.firstBuf = NULL;
}
DataStream *buf;
while( (buf = from.bufQ.Dequeue()) != NULL ) {
bufQ.Enqueue(buf);
}
lastBuf = from.lastBuf;
from.lastBuf = NULL;
}
///////////////////////////////////////////////////////////////
MODPARS::MODPARS(int _val, unsigned _ind, int _lenInd, unsigned _msgType, int _br)
: dataType(EngineBase::dtNone), dataTypeT38(EngineBase::dtNone),
val(_val), ind(_ind), lenInd(_lenInd),
msgType(_msgType), br(_br)
{
}
static const MODPARS mods[] = {
MODPARS( 3, T38I(e_v21_preamble), 900, T38D(e_v21), 300 ),
MODPARS( 24, T38I(e_v27_2400_training), 1100, T38D(e_v27_2400), 2400 ),
MODPARS( 48, T38I(e_v27_4800_training), 900, T38D(e_v27_4800), 4800 ),
MODPARS( 72, T38I(e_v29_7200_training), 300, T38D(e_v29_7200), 7200 ),
MODPARS( 73, T38I(e_v17_7200_long_training), 1500, T38D(e_v17_7200), 7200 ),
MODPARS( 74, T38I(e_v17_7200_short_training), 300, T38D(e_v17_7200), 7200 ),
MODPARS( 96, T38I(e_v29_9600_training), 300, T38D(e_v29_9600), 9600 ),
MODPARS( 97, T38I(e_v17_9600_long_training), 1500, T38D(e_v17_9600), 9600 ),
MODPARS( 98, T38I(e_v17_9600_short_training), 300, T38D(e_v17_9600), 9600 ),
MODPARS( 121, T38I(e_v17_12000_long_training), 1500, T38D(e_v17_12000), 12000 ),
MODPARS( 122, T38I(e_v17_12000_short_training), 300, T38D(e_v17_12000), 12000 ),
MODPARS( 145, T38I(e_v17_14400_long_training), 1500, T38D(e_v17_14400), 14400 ),
MODPARS( 146, T38I(e_v17_14400_short_training), 300, T38D(e_v17_14400), 14400 ),
};
static const MODPARS invalidMods;
enum GetModParsBy {
by_val,
by_ind,
};
static const MODPARS &GetModPars(int key, enum GetModParsBy by = by_val) {
for( PINDEX i = 0 ; i < PINDEX(sizeof(mods)/sizeof(mods[0])) ; i++ ) {
switch( by ) {
case by_val:
if( mods[i].val == key )
return mods[i];
break;
case by_ind:
if( mods[i].ind == (unsigned)key )
return mods[i];
break;
default:
return invalidMods;
}
}
return invalidMods;
}
///////////////////////////////////////////////////////////////
static void t38indicator(T38_IFP &ifp, unsigned type)
{
ifp.m_type_of_msg.SetTag(T38_Type_of_msg::e_t30_indicator);
(T38_Type_of_msg_t30_indicator &)ifp.m_type_of_msg = type;
}
#ifdef OPTIMIZE_CORRIGENDUM_IFP
#define T38_DATA_FIELD T38_Data_Field_subtype
#else
#define T38_DATA_FIELD T38_PreCorrigendum_Data_Field_subtype
#endif
static T38_DATA_FIELD &t38data(T38_IFP &ifp, unsigned type, unsigned field_type)
{
ifp.m_type_of_msg.SetTag(T38_Type_of_msg::e_data);
(T38_Type_of_msg_data &)ifp.m_type_of_msg = type;
ifp.IncludeOptionalField(T38_IFPPacket::e_data_field);
ifp.m_data_field.SetSize(ifp.m_data_field.GetSize()+1);
T38_DATA_FIELD &Data_Field = ifp.m_data_field[0];
Data_Field.m_field_type = field_type;
return Data_Field;
}
static void t38data(T38_IFP &ifp, unsigned type, unsigned field_type, const PBYTEArray &data)
{
T38_DATA_FIELD &Data_Field = t38data(ifp, type, field_type);
if( data.GetSize() > 0 ) {
Data_Field.IncludeOptionalField(T38_Data_Field_subtype::e_field_data);
Data_Field.m_field_data = data;
}
}
///////////////////////////////////////////////////////////////
class FakePreparePacketThread : public PThread
{
PCLASSINFO(FakePreparePacketThread, PThread);
public:
FakePreparePacketThread(T38Engine &engine)
: PThread(30000)
, t38engine(engine)
{
PTRACE(3, t38engine.Name() << " FakePreparePacketThread");
t38engine.AddReference();
}
~FakePreparePacketThread()
{
PTRACE(3, t38engine.Name() << " ~FakePreparePacketThread");
ReferenceObject::DelPointer(&t38engine);
}
protected:
virtual void Main();
T38Engine &t38engine;
};
void FakePreparePacketThread::Main()
{
PTRACE(3, t38engine.Name() << " FakePreparePacketThread::Main started");
t38engine.OpenOut(EngineBase::HOWNEROUT(this), TRUE);
t38engine.SetPreparePacketTimeout(EngineBase::HOWNEROUT(this), -1);
#if PTRACING
unsigned long count = 0;
#endif
for (;;) {
T38_IFP ifp;
int res;
res = t38engine.PreparePacket(EngineBase::HOWNEROUT(this), ifp);
if (res == 0)
break;
#if PTRACING
if (res > 0) {
count++;
PTRACE(4, t38engine.Name() << " FakePreparePacketThread::Main ifp = " << setprecision(2) << ifp);
}
#endif
}
t38engine.CloseOut(EngineBase::HOWNEROUT(this));
PTRACE(3, t38engine.Name() << " FakePreparePacketThread::Main stopped, faked out " << count << " IFP packets");
}
///////////////////////////////////////////////////////////////
T38Engine::T38Engine(const PString &_name)
: EngineBase(_name + " T38Engine")
, bufOut(2048)
, preparePacketTimeout(-1)
, preparePacketPeriod(-1)
, preparePacketDelay()
, stateOut(stOutNoSig)
, onIdleOut(dtNone)
, callbackParamOut(cbpReset)
, ModParsOut()
, delaySignalOut(FALSE)
, startedTimeOutBufEmpty(FALSE)
, timeOutBufEmpty()
, timeDelayEndOut()
, timeBeginOut()
, countOut(0)
, moreFramesOut(FALSE)
, hdlcOut()
, callbackParamIn(cbpReset)
, isCarrierIn(0)
#if PTRACING
, timeBeginIn()
#endif
, countIn(0)
, t30()
, modStreamIn(NULL)
, modStreamInSaved(NULL)
, stateModem(stmIdle)
{
PTRACE(2, name << " T38Engine");
}
T38Engine::~T38Engine()
{
PTRACE(1, name << " ~T38Engine");
if (modStreamIn != NULL)
delete modStreamIn;
if (modStreamInSaved != NULL)
delete modStreamInSaved;
}
void T38Engine::OnOpenIn()
{
EngineBase::OnOpenIn();
}
void T38Engine::OnOpenOut()
{
EngineBase::OnOpenOut();
}
void T38Engine::OnCloseIn()
{
EngineBase::OnCloseIn();
SignalOutDataReady();
}
void T38Engine::OnCloseOut()
{
EngineBase::OnCloseOut();
SignalOutDataReady();
}
void T38Engine::OnChangeEnableFakeIn()
{
EngineBase::OnChangeEnableFakeIn();
if (IsOpenIn() || !isEnableFakeIn)
return;
isCarrierIn = 0;
if (modStreamInSaved != NULL) {
myPTRACE(1, name << " OnChangeEnableFakeIn modStreamInSaved != NULL, clean");
delete modStreamInSaved;
modStreamInSaved = NULL;
}
if (modStreamIn != NULL && modStreamIn->lastBuf != NULL) {
myPTRACE(1, name << " OnChangeEnableFakeIn modStreamIn->lastBuf != NULL");
modStreamIn->PutEof((countIn == 0 ? 0 : diagOutOfOrder) | diagNoCarrier);
if (stateModem == stmInRecvData) {
ModemCallbackWithUnlock(callbackParamIn);
if (IsOpenIn() || !isEnableFakeIn)
return;
}
}
if (stateModem == stmInWaitSilence) {
stateModem = stmIdle;
ModemCallbackWithUnlock(callbackParamIn);
//if (IsOpenIn() || !isEnableFakeIn)
// return;
}
}
void T38Engine::OnChangeEnableFakeOut()
{
EngineBase::OnChangeEnableFakeOut();
SignalOutDataReady();
if (IsOpenOut() || !isEnableFakeOut)
return;
if (stateModem != stmOutMoreData && stateModem != stmOutNoMoreData)
return;
(new FakePreparePacketThread(*this))->Resume();
}
void T38Engine::OnAttach()
{
EngineBase::OnAttach();
}
void T38Engine::OnDetach()
{
EngineBase::OnDetach();
SignalOutDataReady();
}
void T38Engine::OnChangeModemClass()
{
EngineBase::OnChangeModemClass();
}
///////////////////////////////////////////////////////////////
//
void T38Engine::OnResetModemState() {
EngineBase::OnResetModemState();
if (modStreamIn && modStreamIn->DeleteFirstBuf()) {
PTRACE(1, name << " T38Engine::OnResetModemState modStreamIn->DeleteFirstBuf(), clean");
}
bufOut.PutEof();
if (stateModem != stmIdle) {
if (!isStateModemOut()) {
myPTRACE(1, name << " T38Engine::OnResetModemState stateModem(" << stateModem << ") != stmIdle, reset");
stateModem = stmIdle;
} else
myPTRACE(1, name << " T38Engine::OnResetModemState stateModem(" << stateModem << ") != stmIdle");
}
onIdleOut = dtNone;
callbackParamIn = cbpReset;
callbackParamOut = cbpReset;
}
PBoolean T38Engine::isOutBufFull() const
{
PWaitAndSignal mutexWait(Mutex);
return bufOut.isFull();
}
///////////////////////////////////////////////////////////////
void T38Engine::SendOnIdle(DataType _dataType)
{
PTRACE(2, name << " SendOnIdle " << _dataType);
PWaitAndSignal mutexWaitModem(MutexModem);
PWaitAndSignal mutexWait(Mutex);
onIdleOut = _dataType;
SignalOutDataReady();
}
PBoolean T38Engine::SendStart(DataType _dataType, int param)
{
PWaitAndSignal mutexWaitModem(MutexModem);
if (!IsModemOpen())
return FALSE;
if (stateModem != stmIdle) {
myPTRACE(1, name << " SendStart stateModem(" << stateModem << ") != stmIdle");
return FALSE;
}
PWaitAndSignal mutexWait(Mutex);
if (modStreamIn != NULL) {
delete modStreamIn;
modStreamIn = NULL;
}
if (modStreamInSaved != NULL && _dataType != dtSilence) {
delete modStreamInSaved;
modStreamInSaved = NULL;
}
ModParsOut = invalidMods;
switch( _dataType ) {
case dtCed:
ModParsOut.dataTypeT38 = ModParsOut.dataType = _dataType;
ModParsOut.ind = T38I(e_ced);
ModParsOut.lenInd = param;
break;
case dtSilence:
ModParsOut.dataTypeT38 = ModParsOut.dataType = _dataType;
ModParsOut.ind = T38I(e_no_signal);
ModParsOut.lenInd = param;
break;
case dtHdlc:
case dtRaw:
ModParsOut = GetModPars(param);
ModParsOut.dataType = _dataType;
ModParsOut.dataTypeT38 =
(ModParsOut.msgType == T38D(e_v21) || t30.hdlcOnly()) ? dtHdlc : dtRaw;
if (!ModParsOut.IsModValid())
return FALSE;
break;
default:
return FALSE;
}
bufOut.Clean(); // reset eof
stateModem = stmOutMoreData;
SignalOutDataReady();
return TRUE;
}
int T38Engine::Send(const void *pBuf, PINDEX count)
{
PWaitAndSignal mutexWaitModem(MutexModem);
if (!IsModemOpen())
return -1;
if (stateModem != stmOutMoreData) {
myPTRACE(1, name << " Send stateModem(" << stateModem << ") != stmOutMoreData");
return -1;
}
PWaitAndSignal mutexWait(Mutex);
int res = bufOut.PutData(pBuf, count);
if (res < 0) {
myPTRACE(1, name << " Send res(" << res << ") < 0");
}
SignalOutDataReady();
return res;
}
PBoolean T38Engine::SendStop(PBoolean moreFrames, int _callbackParam)
{
PWaitAndSignal mutexWaitModem(MutexModem);
if(!IsModemOpen())
return FALSE;
if (stateModem != stmOutMoreData ) {
myPTRACE(1, name << " SendStop stateModem(" << stateModem << ") != stmOutMoreData");
return FALSE;
}
PWaitAndSignal mutexWait(Mutex);
bufOut.PutEof();
stateModem = stmOutNoMoreData;
moreFramesOut = moreFrames;
callbackParamOut = _callbackParam;
PTRACE(3, name << " SendStop moreFramesOut=" << moreFramesOut
<< " callbackParamOut=" << callbackParamOut);
SignalOutDataReady();
return TRUE;
}
///////////////////////////////////////////////////////////////
PBoolean T38Engine::RecvWait(DataType _dataType, int param, int _callbackParam, PBoolean &done)
{
PWaitAndSignal mutexWaitModem(MutexModem);
if (!IsModemOpen())
return FALSE;
if( stateModem != stmIdle ) {
myPTRACE(1, name << " RecvWait stateModem(" << stateModem << ") != stmIdle");
return FALSE;
}
PWaitAndSignal mutexWait(Mutex);
switch( _dataType ) {
case dtHdlc:
case dtRaw:
break;
case dtSilence:
if (modStreamIn != NULL) {
delete modStreamIn;
modStreamIn = NULL;
if (isCarrierIn && !modStreamInSaved) {
callbackParamIn = _callbackParam;
stateModem = stmInWaitSilence;
return TRUE;
}
}
done = TRUE;
return TRUE;
default:
return FALSE;
}
const MODPARS &ModParsIn = GetModPars(param);
if (!ModParsIn.IsModValid())
return FALSE;
callbackParamIn = _callbackParam;
if (modStreamIn != NULL) {
if (modStreamIn->DeleteFirstBuf()) {
PTRACE(1, name << " RecvWait modStreamIn->DeleteFirstBuf(), clean");
}
if (modStreamIn->bufQ.GetSize() > 0) {
PTRACE(1, name << " RecvWait modStreamIn->bufQ.GetSize()=" << modStreamIn->bufQ.GetSize());
if (ModParsIn.IsEqual(modStreamIn->ModPars)) {
PTRACE(1, name << " RecvWait ModParsIn == modStreamIn->ModPars("
<< modStreamIn->ModPars.val
<< ")");
modStreamIn->ModPars.dataType = _dataType;
modStreamIn->ModPars.dataTypeT38 =
(modStreamIn->ModPars.msgType == T38D(e_v21) || t30.hdlcOnly()) ? dtHdlc : dtRaw;
stateModem = stmInReadyData;
done = TRUE;
return TRUE;
}
}
delete modStreamIn;
}
modStreamIn = new ModStream(ModParsIn);
modStreamIn->ModPars.dataType = _dataType;
modStreamIn->ModPars.dataTypeT38 =
(modStreamIn->ModPars.msgType == T38D(e_v21) || t30.hdlcOnly()) ? dtHdlc : dtRaw;
if (modStreamInSaved != NULL) {
if (modStreamIn->ModPars.IsEqual(modStreamInSaved->ModPars)) {
myPTRACE(2, name << " RecvWait modStreamIn->ModPars == modStreamInSaved->ModPars("
<< modStreamInSaved->ModPars.val
<< ")");
modStreamIn->Move(*modStreamInSaved);
delete modStreamInSaved;
modStreamInSaved = NULL;
} else {
myPTRACE(2, name << " RecvWait modStreamIn->ModPars("
<< modStreamIn->ModPars.val
<< ") != modStreamInSaved->ModPars("
<< modStreamInSaved->ModPars.val
<< ")");
modStreamIn->PushBuf();
modStreamIn->PutEof(diagDiffSig);
}
stateModem = stmInReadyData;
done = TRUE;
return TRUE;
}
stateModem = stmInWaitData;
return TRUE;
}
PBoolean T38Engine::RecvStart(int _callbackParam)
{
PWaitAndSignal mutexWaitModem(MutexModem);
if (!IsModemOpen())
return FALSE;
if (stateModem != stmInReadyData ) {
myPTRACE(1, name << " RecvStart stateModem(" << stateModem << ") != stmInReadyData");
return FALSE;
}
PWaitAndSignal mutexWait(Mutex);
callbackParamIn = _callbackParam;
if (modStreamIn != NULL) {
if (modStreamIn->PopBuf()) {
if (modStreamIn->ModPars.msgType == T38D(e_v21))
t30.v21Begin();
stateModem = stmInRecvData;
return TRUE;
}
myPTRACE(1, name << " RecvStart can't receive firstBuf");
delete modStreamIn;