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Clean up some timing issues with time-synchronized FT4.

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This commit is contained in:
Joe Taylor 2019-04-02 11:39:28 -04:00
parent 888b5fee28
commit fd239d9c07
3 changed files with 28 additions and 31 deletions
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29
Modulator.cpp
View File

@ -92,11 +92,9 @@ void Modulator::start (unsigned symbolsLength, double framesPerSymbol,
if (synchronize && !m_tuning && !m_bFastMode) {
m_silentFrames = m_ic + m_frameRate / (1000 / delay_ms) - (mstr * (m_frameRate / 1000));
}
if((symbolsLength==103 or symbolsLength==105) and framesPerSymbol==512
if(symbolsLength==105 and framesPerSymbol==512
and (toneSpacing==12000.0/512.0 or toneSpacing==-2.0)) {
//### FT4 parameters
delay_ms=100;
mstr=5000;
m_ic=0;
m_silentFrames=0;
}
@ -159,6 +157,8 @@ qint64 Modulator::readData (char * data, qint64 maxSize)
qint16 * end (samples + numFrames * (bytesPerFrame () / sizeof (qint16)));
qint64 framesGenerated (0);
// if(m_ic==0) qDebug() << "Modulator::readData" << 0.001*(QDateTime::currentMSecsSinceEpoch() % (1000*m_TRperiod));
switch (m_state)
{
case Synchronizing:
@ -180,8 +180,7 @@ qint64 Modulator::readData (char * data, qint64 maxSize)
case Active:
{
unsigned int isym=0;
// qDebug() << "Mod A" << m_toneSpacing << m_frequency << m_nsps
// << m_ic << m_symbolsLength << icw[0];
if(!m_tuning) isym=m_ic/(4.0*m_nsps); // Actual fsample=48000
bool slowCwId=((isym >= m_symbolsLength) && (icw[0] > 0)) && (!m_bFastMode);
if(m_TRperiod==3) slowCwId=false;
@ -192,6 +191,8 @@ qint64 Modulator::readData (char * data, qint64 maxSize)
if(m_bFastMode and (icw[0]>0) and (tsec>(m_TRperiod-5.0))) fastCwId=true;
if(!m_bFastMode) m_nspd=2560; // 22.5 WPM
// qDebug() << "Mod A" << m_ic << isym << tsec;
if(slowCwId or fastCwId) { // Transmit CW ID?
m_dphi = m_twoPi*m_frequency/m_frameRate;
if(m_bFastMode and !bCwId) {
@ -263,10 +264,10 @@ qint64 Modulator::readData (char * data, qint64 maxSize)
}
qint16 sample;
for (unsigned i = 0; i < numFrames && m_ic <= i1; ++i) {
isym=0;
if(!m_tuning and m_TRperiod!=3) isym=m_ic / (4.0 * m_nsps); //Actual
//fsample=48000
if(!m_tuning and m_TRperiod!=3) isym=m_ic/(4.0*m_nsps); //Actual fsample=48000
if(m_bFastMode) isym=isym%m_symbolsLength;
if (isym != m_isym0 || m_frequency != m_frequency0) {
if(itone[0]>=100) {
@ -278,8 +279,6 @@ qint64 Modulator::readData (char * data, qint64 maxSize)
m_toneFrequency0=m_frequency + itone[isym]*m_toneSpacing;
}
}
// qDebug() << "Mod B" << m_bFastMode << m_ic << numFrames << isym << itone[isym]
// << m_toneFrequency0 << m_nsps;
m_dphi = m_twoPi * m_toneFrequency0 / m_frameRate;
m_isym0 = isym;
m_frequency0 = m_frequency; //???
@ -302,10 +301,10 @@ qint64 Modulator::readData (char * data, qint64 maxSize)
sample=qRound(m_amp*qSin(m_phi));
//Here's where we transmit from a precomputed wave[] array:
if(!m_tuning and (m_toneSpacing < 0)) sample=qRound(m_amp*foxcom_.wave[m_ic]);
// if(m_ic < 10) qDebug() << "Mod Tx" << m_ic << m_amp
// << foxcom_.wave[m_ic] << sample
// << m_toneSpacing;
if(!m_tuning and (m_toneSpacing < 0)) {
m_amp=32767.0;
sample=qRound(m_amp*foxcom_.wave[m_ic]);
}
samples = load(postProcessSample(sample), samples);
++framesGenerated;
@ -323,8 +322,8 @@ qint64 Modulator::readData (char * data, qint64 maxSize)
m_frequency0 = m_frequency;
// done for this chunk - continue on next call
// qint64 ms1=QDateTime::currentMSecsSinceEpoch() - m_ms0;
// if(m_ic>=4*144*160) qDebug() << "Modulator finished" << m_ic << 0.001*ms1;
// qDebug() << "Mod B" << m_ic << i1 << 0.001*(QDateTime::currentMSecsSinceEpoch() % (1000*m_TRperiod));
while (samples != end) // pad block with silence
{

18
widgets/mainwindow.cpp
View File

@ -1331,7 +1331,7 @@ void MainWindow::fixStop()
} else if (m_mode=="FT8") {
m_hsymStop=50;
} else if (m_mode=="FT4") {
m_hsymStop=17;
m_hsymStop=18;
}
}
@ -1340,7 +1340,6 @@ void MainWindow::dataSink(qint64 frames)
{
static float s[NSMAX];
char line[80];
int k(frames);
QString fname {QDir::toNativeSeparators(m_config.writeable_data_dir ().absoluteFilePath ("refspec.dat"))};
QByteArray bafname = fname.toLatin1();
@ -3396,7 +3395,7 @@ void MainWindow::guiUpdate()
if(m_TRperiod==0) m_TRperiod=60;
txDuration=0.0;
if(m_modeTx=="FT4") txDuration=0.25 + 103*512/12000.0; // FT4
if(m_modeTx=="FT4") txDuration=0.35 + 105*512/12000.0; // FT4
if(m_modeTx=="FT8") txDuration=1.0 + 79*1920/12000.0; // FT8
if(m_modeTx=="JT4") txDuration=1.0 + 207.0*2520/11025.0; // JT4
if(m_modeTx=="JT9") txDuration=1.0 + 85.0*m_nsps/12000.0; // JT9
@ -5650,7 +5649,7 @@ void MainWindow::on_actionFT4_triggered()
m_nsps=6912;
m_FFTSize = m_nsps/2;
Q_EMIT FFTSize (m_FFTSize);
m_hsymStop=17;
m_hsymStop=18;
setup_status_bar (bVHF);
m_toneSpacing=12000.0/512.0;
ui->actionFT4->setChecked(true);
@ -6787,15 +6786,14 @@ void MainWindow::setFreq4(int rxFreq, int txFreq)
void MainWindow::handle_transceiver_update (Transceiver::TransceiverState const& s)
{
// qDebug () << "MainWindow::handle_transceiver_update:" << s;
Transceiver::TransceiverState old_state {m_rigState};
//transmitDisplay (s.ptt ());
if (s.ptt () && !m_rigState.ptt ()) // safe to start audio
if (s.ptt () && !m_rigState.ptt ()) { // safe to start audio
// (caveat - DX Lab Suite Commander)
{
if (m_tx_when_ready && g_iptt) // waiting to Tx and still needed
{
ptt1Timer.start(1000 * m_config.txDelay ()); //Start-of-transmission sequencer delay
if (m_tx_when_ready && g_iptt) { // waiting to Tx and still needed
int ms_delay=1000*m_config.txDelay();
if(m_mode=="FT4") ms_delay=20;
ptt1Timer.start(ms_delay); //Start-of-transmission sequencer delay
}
m_tx_when_ready = false;
}

2
widgets/mainwindow.h
View File

@ -46,7 +46,7 @@
#define NUM_MSK144_SYMBOLS 144 //s8 + d48 + s8 + d80
#define NUM_QRA64_SYMBOLS 84 //63 data + 21 sync
#define NUM_FT8_SYMBOLS 79
#define NUM_FT4_SYMBOLS 103
#define NUM_FT4_SYMBOLS 105
#define NUM_CW_SYMBOLS 250
#define TX_SAMPLE_RATE 48000
#define N_WIDGETS 33