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sdrangel/sdrbase/dsp/dspdevicesourceengine.cpp

767 lines
22 KiB
C++

///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2015 F4EXB //
// written by Edouard Griffiths //
// //
// This program is free software; you can redistribute it and/or modify //
// it under the terms of the GNU General Public License as published by //
// the Free Software Foundation as version 3 of the License, or //
// //
// This program 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 V3 for more details. //
// //
// You should have received a copy of the GNU General Public License //
// along with this program. If not, see <http://www.gnu.org/licenses/>. //
///////////////////////////////////////////////////////////////////////////////////
#include "dspdevicesourceengine.h"
#include <dsp/basebandsamplesink.h>
#include <dsp/devicesamplesource.h>
#include <dsp/downchannelizer.h>
#include <stdio.h>
#include <QDebug>
#include "dsp/dspcommands.h"
#include "util/fixed.h"
#include "samplesinkfifo.h"
#include "threadedbasebandsamplesink.h"
DSPDeviceSourceEngine::DSPDeviceSourceEngine(uint uid, QObject* parent) :
QThread(parent),
m_uid(uid),
m_state(StNotStarted),
m_deviceSampleSource(0),
m_sampleSourceSequence(0),
m_basebandSampleSinks(),
m_sampleRate(0),
m_centerFrequency(0),
m_dcOffsetCorrection(false),
m_iqImbalanceCorrection(false),
m_iOffset(0),
m_qOffset(0),
m_iRange(1 << 16),
m_qRange(1 << 16),
m_imbalance(65536)
{
connect(&m_inputMessageQueue, SIGNAL(messageEnqueued()), this, SLOT(handleInputMessages()), Qt::QueuedConnection);
connect(&m_syncMessenger, SIGNAL(messageSent()), this, SLOT(handleSynchronousMessages()), Qt::QueuedConnection);
moveToThread(this);
}
DSPDeviceSourceEngine::~DSPDeviceSourceEngine()
{
stop();
wait();
}
void DSPDeviceSourceEngine::run()
{
qDebug() << "DSPDeviceSourceEngine::run";
m_state = StIdle;
exec();
}
void DSPDeviceSourceEngine::start()
{
qDebug() << "DSPDeviceSourceEngine::start";
QThread::start();
}
void DSPDeviceSourceEngine::stop()
{
qDebug() << "DSPDeviceSourceEngine::stop";
gotoIdle();
m_state = StNotStarted;
QThread::exit();
// DSPExit cmd;
// m_syncMessenger.sendWait(cmd);
}
bool DSPDeviceSourceEngine::initAcquisition()
{
qDebug() << "DSPDeviceSourceEngine::initAcquisition";
DSPAcquisitionInit cmd;
return m_syncMessenger.sendWait(cmd) == StReady;
}
bool DSPDeviceSourceEngine::startAcquisition()
{
qDebug() << "DSPDeviceSourceEngine::startAcquisition";
DSPAcquisitionStart cmd;
return m_syncMessenger.sendWait(cmd) == StRunning;
}
void DSPDeviceSourceEngine::stopAcquistion()
{
qDebug() << "DSPDeviceSourceEngine::stopAcquistion";
DSPAcquisitionStop cmd;
m_syncMessenger.storeMessage(cmd);
handleSynchronousMessages();
if(m_dcOffsetCorrection)
{
qDebug("DC offset:%f,%f", m_iOffset, m_qOffset);
}
}
void DSPDeviceSourceEngine::setSource(DeviceSampleSource* source)
{
qDebug() << "DSPDeviceSourceEngine::setSource";
DSPSetSource cmd(source);
m_syncMessenger.sendWait(cmd);
}
void DSPDeviceSourceEngine::setSourceSequence(int sequence)
{
qDebug("DSPDeviceSourceEngine::setSourceSequence: seq: %d", sequence);
m_sampleSourceSequence = sequence;
}
void DSPDeviceSourceEngine::addSink(BasebandSampleSink* sink)
{
qDebug() << "DSPDeviceSourceEngine::addSink: " << sink->objectName().toStdString().c_str();
DSPAddBasebandSampleSink cmd(sink);
m_syncMessenger.sendWait(cmd);
}
void DSPDeviceSourceEngine::removeSink(BasebandSampleSink* sink)
{
qDebug() << "DSPDeviceSourceEngine::removeSink: " << sink->objectName().toStdString().c_str();
DSPRemoveBasebandSampleSink cmd(sink);
m_syncMessenger.sendWait(cmd);
}
void DSPDeviceSourceEngine::addThreadedSink(ThreadedBasebandSampleSink* sink)
{
qDebug() << "DSPDeviceSourceEngine::addThreadedSink: " << sink->objectName().toStdString().c_str();
DSPAddThreadedBasebandSampleSink cmd(sink);
m_syncMessenger.sendWait(cmd);
}
void DSPDeviceSourceEngine::removeThreadedSink(ThreadedBasebandSampleSink* sink)
{
qDebug() << "DSPDeviceSourceEngine::removeThreadedSink: " << sink->objectName().toStdString().c_str();
DSPRemoveThreadedBasebandSampleSink cmd(sink);
m_syncMessenger.sendWait(cmd);
}
void DSPDeviceSourceEngine::configureCorrections(bool dcOffsetCorrection, bool iqImbalanceCorrection)
{
qDebug() << "DSPDeviceSourceEngine::configureCorrections";
DSPConfigureCorrection* cmd = new DSPConfigureCorrection(dcOffsetCorrection, iqImbalanceCorrection);
m_inputMessageQueue.push(cmd);
}
QString DSPDeviceSourceEngine::errorMessage()
{
qDebug() << "DSPDeviceSourceEngine::errorMessage";
DSPGetErrorMessage cmd;
m_syncMessenger.sendWait(cmd);
return cmd.getErrorMessage();
}
QString DSPDeviceSourceEngine::sourceDeviceDescription()
{
qDebug() << "DSPDeviceSourceEngine::sourceDeviceDescription";
DSPGetSourceDeviceDescription cmd;
m_syncMessenger.sendWait(cmd);
return cmd.getDeviceDescription();
}
void DSPDeviceSourceEngine::iqCorrections(SampleVector::iterator begin, SampleVector::iterator end, bool imbalanceCorrection)
{
for(SampleVector::iterator it = begin; it < end; it++)
{
m_iBeta(it->real());
m_qBeta(it->imag());
if (imbalanceCorrection)
{
#if IMBALANCE_INT
// acquisition
int64_t xi = (it->m_real - (int32_t) m_iBeta) << 5;
int64_t xq = (it->m_imag - (int32_t) m_qBeta) << 5;
// phase imbalance
m_avgII((xi*xi)>>28); // <I", I">
m_avgIQ((xi*xq)>>28); // <I", Q">
if ((int64_t) m_avgII != 0)
{
int64_t phi = (((int64_t) m_avgIQ)<<28) / (int64_t) m_avgII;
m_avgPhi(phi);
}
int64_t corrPhi = (((int64_t) m_avgPhi) * xq) >> 28; //(m_avgPhi.asDouble()/16777216.0) * ((double) xq);
int64_t yi = xi - corrPhi;
int64_t yq = xq;
// amplitude I/Q imbalance
m_avgII2((yi*yi)>>28); // <I, I>
m_avgQQ2((yq*yq)>>28); // <Q, Q>
if ((int64_t) m_avgQQ2 != 0)
{
int64_t a = (((int64_t) m_avgII2)<<28) / (int64_t) m_avgQQ2;
Fixed<int64_t, 28> fA(Fixed<int64_t, 28>::internal(), a);
Fixed<int64_t, 28> sqrtA = sqrt((Fixed<int64_t, 28>) fA);
m_avgAmp(sqrtA.as_internal());
}
int64_t zq = (((int64_t) m_avgAmp) * yq) >> 28;
it->m_real = yi >> 5;
it->m_imag = zq >> 5;
#else
// DC correction and conversion
float xi = (it->m_real - (int32_t) m_iBeta) / SDR_RX_SCALEF;
float xq = (it->m_imag - (int32_t) m_qBeta) / SDR_RX_SCALEF;
// phase imbalance
m_avgII(xi*xi); // <I", I">
m_avgIQ(xi*xq); // <I", Q">
if (m_avgII.asDouble() != 0) {
m_avgPhi(m_avgIQ.asDouble()/m_avgII.asDouble());
}
float& yi = xi; // the in phase remains the reference
float yq = xq - m_avgPhi.asDouble()*xi;
// amplitude I/Q imbalance
m_avgII2(yi*yi); // <I, I>
m_avgQQ2(yq*yq); // <Q, Q>
if (m_avgQQ2.asDouble() != 0) {
m_avgAmp(sqrt(m_avgII2.asDouble() / m_avgQQ2.asDouble()));
}
// final correction
float& zi = yi; // the in phase remains the reference
float zq = m_avgAmp.asDouble() * yq;
// convert and store
it->m_real = zi * SDR_RX_SCALEF;
it->m_imag = zq * SDR_RX_SCALEF;
#endif
}
else
{
// DC correction only
it->m_real -= (int32_t) m_iBeta;
it->m_imag -= (int32_t) m_qBeta;
}
}
}
void DSPDeviceSourceEngine::dcOffset(SampleVector::iterator begin, SampleVector::iterator end)
{
// sum and correct in one pass
for(SampleVector::iterator it = begin; it < end; it++)
{
m_iBeta(it->real());
m_qBeta(it->imag());
it->m_real -= (int32_t) m_iBeta;
it->m_imag -= (int32_t) m_qBeta;
}
}
void DSPDeviceSourceEngine::imbalance(SampleVector::iterator begin, SampleVector::iterator end)
{
int iMin = 0;
int iMax = 0;
int qMin = 0;
int qMax = 0;
// find value ranges for both I and Q
// both intervals should be same same size (for a perfect circle)
for (SampleVector::iterator it = begin; it < end; it++)
{
if (it != begin)
{
if (it->real() < iMin) {
iMin = it->real();
} else if (it->real() > iMax) {
iMax = it->real();
}
if (it->imag() < qMin) {
qMin = it->imag();
} else if (it->imag() > qMax) {
qMax = it->imag();
}
}
else
{
iMin = it->real();
iMax = it->real();
qMin = it->imag();
qMax = it->imag();
}
}
// sliding average (el cheapo again)
m_iRange = (m_iRange * 15 + (iMax - iMin)) >> 4;
m_qRange = (m_qRange * 15 + (qMax - qMin)) >> 4;
// calculate imbalance on 32 bit full scale
if(m_qRange != 0) {
m_imbalance = ((uint)m_iRange << (32-SDR_RX_SAMP_SZ)) / (uint)m_qRange;
}
// correct imbalance and convert back to sample size
for(SampleVector::iterator it = begin; it < end; it++) {
it->m_imag = (it->m_imag * m_imbalance) >> (32-SDR_RX_SAMP_SZ);
}
}
void DSPDeviceSourceEngine::work()
{
SampleSinkFifo* sampleFifo = m_deviceSampleSource->getSampleFifo();
std::size_t samplesDone = 0;
bool positiveOnly = false;
while ((sampleFifo->fill() > 0) && (m_inputMessageQueue.size() == 0) && (samplesDone < m_sampleRate))
{
SampleVector::iterator part1begin;
SampleVector::iterator part1end;
SampleVector::iterator part2begin;
SampleVector::iterator part2end;
std::size_t count = sampleFifo->readBegin(sampleFifo->fill(), &part1begin, &part1end, &part2begin, &part2end);
// first part of FIFO data
if (part1begin != part1end)
{
// correct stuff
if (m_dcOffsetCorrection)
{
iqCorrections(part1begin, part1end, m_iqImbalanceCorrection);
}
// if (m_dcOffsetCorrection)
// {
// dcOffset(part1begin, part1end);
// }
//
// if (m_iqImbalanceCorrection)
// {
// imbalance(part1begin, part1end);
// }
// feed data to direct sinks
for (BasebandSampleSinks::const_iterator it = m_basebandSampleSinks.begin(); it != m_basebandSampleSinks.end(); ++it)
{
(*it)->feed(part1begin, part1end, positiveOnly);
}
// feed data to threaded sinks
for (ThreadedBasebandSampleSinks::const_iterator it = m_threadedBasebandSampleSinks.begin(); it != m_threadedBasebandSampleSinks.end(); ++it)
{
(*it)->feed(part1begin, part1end, positiveOnly);
}
}
// second part of FIFO data (used when block wraps around)
if(part2begin != part2end)
{
// correct stuff
if (m_dcOffsetCorrection)
{
iqCorrections(part2begin, part2end, m_iqImbalanceCorrection);
}
// if (m_dcOffsetCorrection)
// {
// dcOffset(part2begin, part2end);
// }
//
// if (m_iqImbalanceCorrection)
// {
// imbalance(part2begin, part2end);
// }
// feed data to direct sinks
for (BasebandSampleSinks::const_iterator it = m_basebandSampleSinks.begin(); it != m_basebandSampleSinks.end(); it++)
{
(*it)->feed(part2begin, part2end, positiveOnly);
}
// feed data to threaded sinks
for (ThreadedBasebandSampleSinks::const_iterator it = m_threadedBasebandSampleSinks.begin(); it != m_threadedBasebandSampleSinks.end(); ++it)
{
(*it)->feed(part2begin, part2end, positiveOnly);
}
}
// adjust FIFO pointers
sampleFifo->readCommit((unsigned int) count);
samplesDone += count;
}
}
// notStarted -> idle -> init -> running -+
// ^ |
// +-----------------------+
DSPDeviceSourceEngine::State DSPDeviceSourceEngine::gotoIdle()
{
qDebug() << "DSPDeviceSourceEngine::gotoIdle";
switch(m_state) {
case StNotStarted:
return StNotStarted;
case StIdle:
case StError:
return StIdle;
case StReady:
case StRunning:
break;
}
if(m_deviceSampleSource == 0)
{
return StIdle;
}
// stop everything
for(BasebandSampleSinks::const_iterator it = m_basebandSampleSinks.begin(); it != m_basebandSampleSinks.end(); it++)
{
(*it)->stop();
}
for(ThreadedBasebandSampleSinks::const_iterator it = m_threadedBasebandSampleSinks.begin(); it != m_threadedBasebandSampleSinks.end(); it++)
{
(*it)->stop();
}
m_deviceSampleSource->stop();
m_deviceDescription.clear();
m_sampleRate = 0;
return StIdle;
}
DSPDeviceSourceEngine::State DSPDeviceSourceEngine::gotoInit()
{
switch(m_state) {
case StNotStarted:
return StNotStarted;
case StRunning: // FIXME: assumes it goes first through idle state. Could we get back to init from running directly?
return StRunning;
case StReady:
return StReady;
case StIdle:
case StError:
break;
}
if (m_deviceSampleSource == 0)
{
return gotoError("No sample source configured");
}
// init: pass sample rate and center frequency to all sample rate and/or center frequency dependent sinks and wait for completion
m_iOffset = 0;
m_qOffset = 0;
m_iRange = 1 << 16;
m_qRange = 1 << 16;
m_deviceDescription = m_deviceSampleSource->getDeviceDescription();
m_centerFrequency = m_deviceSampleSource->getCenterFrequency();
m_sampleRate = m_deviceSampleSource->getSampleRate();
qDebug() << "DSPDeviceSourceEngine::gotoInit: "
<< " m_deviceDescription: " << m_deviceDescription.toStdString().c_str()
<< " sampleRate: " << m_sampleRate
<< " centerFrequency: " << m_centerFrequency;
DSPSignalNotification notif(m_sampleRate, m_centerFrequency);
for (BasebandSampleSinks::const_iterator it = m_basebandSampleSinks.begin(); it != m_basebandSampleSinks.end(); ++it)
{
qDebug() << "DSPDeviceSourceEngine::gotoInit: initializing " << (*it)->objectName().toStdString().c_str();
(*it)->handleMessage(notif);
}
for (ThreadedBasebandSampleSinks::const_iterator it = m_threadedBasebandSampleSinks.begin(); it != m_threadedBasebandSampleSinks.end(); ++it)
{
qDebug() << "DSPDeviceSourceEngine::gotoInit: initializing ThreadedSampleSink(" << (*it)->getSampleSinkObjectName().toStdString().c_str() << ")";
(*it)->handleSinkMessage(notif);
}
// pass data to listeners
if (m_deviceSampleSource->getMessageQueueToGUI())
{
DSPSignalNotification* rep = new DSPSignalNotification(notif); // make a copy for the output queue
m_deviceSampleSource->getMessageQueueToGUI()->push(rep);
}
return StReady;
}
DSPDeviceSourceEngine::State DSPDeviceSourceEngine::gotoRunning()
{
qDebug() << "DSPDeviceSourceEngine::gotoRunning";
switch(m_state)
{
case StNotStarted:
return StNotStarted;
case StIdle:
return StIdle;
case StRunning:
return StRunning;
case StReady:
case StError:
break;
}
if(m_deviceSampleSource == NULL) {
return gotoError("DSPDeviceSourceEngine::gotoRunning: No sample source configured");
}
qDebug() << "DSPDeviceSourceEngine::gotoRunning: " << m_deviceDescription.toStdString().c_str() << " started";
// Start everything
if(!m_deviceSampleSource->start())
{
return gotoError("Could not start sample source");
}
for(BasebandSampleSinks::const_iterator it = m_basebandSampleSinks.begin(); it != m_basebandSampleSinks.end(); it++)
{
qDebug() << "DSPDeviceSourceEngine::gotoRunning: starting " << (*it)->objectName().toStdString().c_str();
(*it)->start();
}
for (ThreadedBasebandSampleSinks::const_iterator it = m_threadedBasebandSampleSinks.begin(); it != m_threadedBasebandSampleSinks.end(); ++it)
{
qDebug() << "DSPDeviceSourceEngine::gotoRunning: starting ThreadedSampleSink(" << (*it)->getSampleSinkObjectName().toStdString().c_str() << ")";
(*it)->start();
}
qDebug() << "DSPDeviceSourceEngine::gotoRunning:input message queue pending: " << m_inputMessageQueue.size();
return StRunning;
}
DSPDeviceSourceEngine::State DSPDeviceSourceEngine::gotoError(const QString& errorMessage)
{
qDebug() << "DSPDeviceSourceEngine::gotoError: " << errorMessage;
m_errorMessage = errorMessage;
m_deviceDescription.clear();
m_state = StError;
return StError;
}
void DSPDeviceSourceEngine::handleSetSource(DeviceSampleSource* source)
{
gotoIdle();
// if(m_sampleSource != 0)
// {
// disconnect(m_sampleSource->getSampleFifo(), SIGNAL(dataReady()), this, SLOT(handleData()));
// }
m_deviceSampleSource = source;
if(m_deviceSampleSource != 0)
{
qDebug("DSPDeviceSourceEngine::handleSetSource: set %s", qPrintable(source->getDeviceDescription()));
connect(m_deviceSampleSource->getSampleFifo(), SIGNAL(dataReady()), this, SLOT(handleData()), Qt::QueuedConnection);
}
else
{
qDebug("DSPDeviceSourceEngine::handleSetSource: set none");
}
}
void DSPDeviceSourceEngine::handleData()
{
if(m_state == StRunning)
{
work();
}
}
void DSPDeviceSourceEngine::handleSynchronousMessages()
{
Message *message = m_syncMessenger.getMessage();
qDebug() << "DSPDeviceSourceEngine::handleSynchronousMessages: " << message->getIdentifier();
if (DSPAcquisitionInit::match(*message))
{
m_state = gotoIdle();
if(m_state == StIdle) {
m_state = gotoInit(); // State goes ready if init is performed
}
}
else if (DSPAcquisitionStart::match(*message))
{
if(m_state == StReady) {
m_state = gotoRunning();
}
}
else if (DSPAcquisitionStop::match(*message))
{
m_state = gotoIdle();
}
else if (DSPGetSourceDeviceDescription::match(*message))
{
((DSPGetSourceDeviceDescription*) message)->setDeviceDescription(m_deviceDescription);
}
else if (DSPGetErrorMessage::match(*message))
{
((DSPGetErrorMessage*) message)->setErrorMessage(m_errorMessage);
}
else if (DSPSetSource::match(*message)) {
handleSetSource(((DSPSetSource*) message)->getSampleSource());
}
else if (DSPAddBasebandSampleSink::match(*message))
{
BasebandSampleSink* sink = ((DSPAddBasebandSampleSink*) message)->getSampleSink();
m_basebandSampleSinks.push_back(sink);
// initialize sample rate and center frequency in the sink:
DSPSignalNotification msg(m_sampleRate, m_centerFrequency);
sink->handleMessage(msg);
// start the sink:
if(m_state == StRunning) {
sink->start();
}
}
else if (DSPRemoveBasebandSampleSink::match(*message))
{
BasebandSampleSink* sink = ((DSPRemoveBasebandSampleSink*) message)->getSampleSink();
if(m_state == StRunning) {
sink->stop();
}
m_basebandSampleSinks.remove(sink);
}
else if (DSPAddThreadedBasebandSampleSink::match(*message))
{
ThreadedBasebandSampleSink *threadedSink = ((DSPAddThreadedBasebandSampleSink*) message)->getThreadedSampleSink();
m_threadedBasebandSampleSinks.push_back(threadedSink);
// initialize sample rate and center frequency in the sink:
DSPSignalNotification msg(m_sampleRate, m_centerFrequency);
threadedSink->handleSinkMessage(msg);
// start the sink:
if(m_state == StRunning) {
threadedSink->start();
}
}
else if (DSPRemoveThreadedBasebandSampleSink::match(*message))
{
ThreadedBasebandSampleSink* threadedSink = ((DSPRemoveThreadedBasebandSampleSink*) message)->getThreadedSampleSink();
threadedSink->stop();
m_threadedBasebandSampleSinks.remove(threadedSink);
}
m_syncMessenger.done(m_state);
}
void DSPDeviceSourceEngine::handleInputMessages()
{
Message* message;
while ((message = m_inputMessageQueue.pop()) != 0)
{
qDebug("DSPDeviceSourceEngine::handleInputMessages: message: %s", message->getIdentifier());
if (DSPConfigureCorrection::match(*message))
{
DSPConfigureCorrection* conf = (DSPConfigureCorrection*) message;
m_iqImbalanceCorrection = conf->getIQImbalanceCorrection();
if(m_dcOffsetCorrection != conf->getDCOffsetCorrection())
{
m_dcOffsetCorrection = conf->getDCOffsetCorrection();
m_iOffset = 0;
m_qOffset = 0;
}
if(m_iqImbalanceCorrection != conf->getIQImbalanceCorrection())
{
m_iqImbalanceCorrection = conf->getIQImbalanceCorrection();
m_iRange = 1 << 16;
m_qRange = 1 << 16;
m_imbalance = 65536;
}
m_avgAmp.reset();
m_avgII.reset();
m_avgII2.reset();
m_avgIQ.reset();
m_avgPhi.reset();
m_avgQQ2.reset();
m_iBeta.reset();
m_qBeta.reset();
delete message;
}
else if (DSPSignalNotification::match(*message))
{
DSPSignalNotification *notif = (DSPSignalNotification *) message;
// update DSP values
m_sampleRate = notif->getSampleRate();
m_centerFrequency = notif->getCenterFrequency();
qDebug() << "DSPDeviceSourceEngine::handleInputMessages: DSPSignalNotification:"
<< " m_sampleRate: " << m_sampleRate
<< " m_centerFrequency: " << m_centerFrequency;
// forward source changes to channel sinks with immediate execution (no queuing)
for(BasebandSampleSinks::const_iterator it = m_basebandSampleSinks.begin(); it != m_basebandSampleSinks.end(); it++)
{
qDebug() << "DSPDeviceSourceEngine::handleInputMessages: forward message to " << (*it)->objectName().toStdString().c_str();
(*it)->handleMessage(*message);
}
for (ThreadedBasebandSampleSinks::const_iterator it = m_threadedBasebandSampleSinks.begin(); it != m_threadedBasebandSampleSinks.end(); ++it)
{
qDebug() << "DSPDeviceSourceEngine::handleSourceMessages: forward message to ThreadedSampleSink(" << (*it)->getSampleSinkObjectName().toStdString().c_str() << ")";
(*it)->handleSinkMessage(*message);
}
// forward changes to source GUI input queue
MessageQueue *guiMessageQueue = m_deviceSampleSource->getMessageQueueToGUI();
qDebug("DSPDeviceSourceEngine::handleInputMessages: DSPSignalNotification: guiMessageQueue: %p", guiMessageQueue);
if (guiMessageQueue) {
DSPSignalNotification* rep = new DSPSignalNotification(*notif); // make a copy for the source GUI
guiMessageQueue->push(rep);
}
//m_outputMessageQueue.push(rep);
delete message;
}
}
}