soda_listener.cpp

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/*
Copyright (c) 2017 Matthew H. Reilly (kb1vc)
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:

    Redistributions of source code must retain the above copyright
    notice, this list of conditions and the following disclaimer.
    Redistributions in binary form must reproduce the above copyright
    notice, this list of conditions and the following disclaimer in
    the documentation and/or other materials provided with the
    distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

#include "soda_listener.hpp"

GUISoDa::Listener::Listener(QObject * parent, const QString & _socket_basename) : QObject(parent) {
  quit = false;
  socket_basename = _socket_basename; 
}

bool GUISoDa::Listener::init()
{
  cmd_socket = new QLocalSocket(this);
  // first wait for the file to be created
  QString cmd_socket_name = socket_basename + "_cmd"; 
  int wcount = 0;
  while(!QFile::exists(cmd_socket_name)) {
    QThread::sleep(5);
    wcount++; 
    if(wcount > 30) {
      qDebug() << QString("Waited %1 seconds for socket file [%2] to be created.  Is the radio process dead?").arg(wcount * 5).arg(cmd_socket_name);
      emit(fatalError(QString("No socket file [%1] found after timeout of %2 seconds").arg(cmd_socket_name).arg(wcount * 5)));
      return false;       
    }
  }

  cmd_socket->connectToServer(cmd_socket_name); 
  while(!cmd_socket->waitForConnected(1000)) {
    qDebug() << QString("Waited connection on local socket [%1_cmd]. Is something wrong?").arg(socket_basename);
    qDebug() << cmd_socket->errorString();
    QThread::sleep(5); // sleep for 5 seconds...    
  }
    
  connect(cmd_socket, SIGNAL(readyRead()), 
      this, SLOT(processCmd())); 
  connect(cmd_socket, SIGNAL(error(QLocalSocket::LocalSocketError)), 
      this, SLOT(cmdErrorHandler(QLocalSocket::LocalSocketError)));


  spect_socket = new QLocalSocket(this);
  spect_socket->connectToServer(socket_basename + "_wfall"); 
  while(!spect_socket->waitForConnected(30000)) {
    qDebug() << QString("Waited 30 seconds for connection on local socket [%1_wfall]. Is something wrong?").arg(socket_basename);
    qDebug() << cmd_socket->errorString();
    QThread::sleep(5); // sleep for 5 seconds...    
  }
    
  connect(spect_socket, SIGNAL(readyRead()), 
      this, SLOT(processSpectrum())); 
  connect(spect_socket, SIGNAL(error(QLocalSocket::LocalSocketError)), 
      this, SLOT(cmdErrorHandler(QLocalSocket::LocalSocketError)));

  spect_buffer_len = 0; 

  return true; 
}

void GUISoDa::Listener::start()
{
  put(SoDa::Command(SoDa::Command::GET, SoDa::Command::HWMB_REP));
  return; 
}

int GUISoDa::Listener::put(const char * buf, int len)
{
  cmd_socket->write((char*) &len, sizeof(int)); 

  unsigned int to_go = len; 
  
  const char * cp = buf; 
  while(to_go > 0) {
    int l = cmd_socket->write(cp, to_go); 
    if(l < 0) return l; 
    else {
      to_go -= l; 
      cp += l; 
    }
  }

  cmd_socket->flush();  
  return len; 
}

int GUISoDa::Listener::get(char * buf, int maxlen)
{
  int len; 
  int stat = cmd_socket->read((char*) & len, sizeof(int));

  if(stat < 0) return stat; 
 
  if(len > maxlen) len = maxlen;

  unsigned int to_go = len; 
  
  char * cp = buf; 
  while(to_go > 0) {
    int l = cmd_socket->read(cp, to_go); 
    if(l < 0) return l; 
    else {
      to_go -= l; 
      cp += l; 
    }
  }

  return len; 
}

bool GUISoDa::Listener::get(SoDa::Command & cmd)
{
  int len = get((char*) &cmd, sizeof(SoDa::Command));
  return len > 0; 
}

void GUISoDa::Listener::setupSpectrumBuffer(double cfreq, double span, long buflen)
{
  spect_center_freq = cfreq; 

  if(spect_buffer_len < buflen) {
    if(spect_buffer_len > 0) delete[] spect_buffer; 

    spect_buffer_len = buflen; 
    spect_buffer = new float[buflen]; 
  }
  else {
    spect_buffer_len = buflen; 
  }
}

void GUISoDa::Listener::processSpectrum() {
  int rlen = spect_buffer_len * sizeof(float);
  while(spect_socket->bytesAvailable() > (sizeof(int) + rlen)) {
    int len; 
    int stat = spect_socket->read((char*) & len, sizeof(int));

    if(rlen != len) {
      char * nbuf = new char[len];
      // throw it away. 
      spect_socket->read(nbuf, len); 
      delete[] nbuf; 
    }
    else {
      stat = spect_socket->read((char*) spect_buffer, rlen); 
      emit(updateData(spect_center_freq, spect_buffer)); 
    }
  }
}

void GUISoDa::Listener::processCmd() {
  SoDa::Command incmd; 
 
  while(cmd_socket->bytesAvailable() > sizeof(SoDa::Command)) {
    int len = get(incmd);    

    if(incmd.cmd == SoDa::Command::REP) handleREP(incmd);
    else if(incmd.cmd == SoDa::Command::GET) handleGET(incmd);
    else if(incmd.cmd == SoDa::Command::SET) handleSET(incmd);    
  }
}


bool GUISoDa::Listener::put(const SoDa::Command & cmd)
{
  int len = put((char*) &cmd, sizeof(SoDa::Command));
  return len > 0;
}

void GUISoDa::Listener::setRXFreq(double freq) {
  if(!put(SoDa::Command(SoDa::Command::SET, SoDa::Command::RX_RETUNE_FREQ, freq))) {
    perror("What happened here?");
  }
  current_rx_freq = freq;   
}

void GUISoDa::Listener::setTXFreq(double freq) {
  if(!put(SoDa::Command(SoDa::Command::SET, SoDa::Command::TX_RETUNE_FREQ, freq))) {
    perror("What happened here?");
  }
  current_tx_freq = freq; 
}

void GUISoDa::Listener::setRXGain(int gain) {
  double dgain = gain;   
  if(!put(SoDa::Command(SoDa::Command::SET, SoDa::Command::RX_RF_GAIN, dgain))) {
    perror("What happened here?");
  }
}

void GUISoDa::Listener::setTXGain(int gain) {
  double dgain = gain;   
  if(!put(SoDa::Command(SoDa::Command::SET, SoDa::Command::TX_RF_GAIN, dgain))) {
    perror("What happened here?");
  }
}

void GUISoDa::Listener::setAFGain(int gain) {
  double dgain = gain; 
  // this is a little complex...
  dgain = 50.0 * (log10(dgain) / log10(100.0));
  if(!put(SoDa::Command(SoDa::Command::SET, SoDa::Command::RX_AF_GAIN, dgain))) {
    perror("What happened here?");
  }
}

void GUISoDa::Listener::setAFSidetoneGain(int gain) {
  double dgain = gain;   
  if(!put(SoDa::Command(SoDa::Command::SET, SoDa::Command::RX_AF_SIDETONE_GAIN, dgain))) {
    perror("What happened here?");
  }
}


void GUISoDa::Listener::setModulation(int mod_id)
{

  if(!put(SoDa::Command(SoDa::Command::SET, SoDa::Command::RX_MODE, mod_id))) {
    perror("What happened here?");
  }
  if(!put(SoDa::Command(SoDa::Command::SET, SoDa::Command::TX_MODE, mod_id))) {
    perror("What happened here?");
  }
}

void GUISoDa::Listener::setAFFilter(int id)
{
  if(!put(SoDa::Command(SoDa::Command::SET, SoDa::Command::RX_AF_FILTER, id))) {
    perror("What happened here?");
  }
}

bool GUISoDa::Listener::handleREP(const SoDa::Command & cmd) 
{
  switch(cmd.target) {
  case SoDa::Command::MOD_SEL_ENTRY:
    emit(addModulation(QString(cmd.sparm), cmd.tag));
    break; 
  case SoDa::Command::AF_FILT_ENTRY:
    emit(addFilterName(QString(cmd.sparm), cmd.tag));
    break; 
  case SoDa::Command::RX_ANT_NAME:
    emit(addRXAntName(QString(cmd.sparm)));
    break; 
  case SoDa::Command::TX_ANT_NAME:
    emit(addTXAntName(QString(cmd.sparm)));
    break; 
  case SoDa::Command::SPEC_DIMS:
    emit(configureSpectrum(cmd.dparms[0], cmd.dparms[1], ((long) cmd.dparms[2])));
    setupSpectrumBuffer(cmd.dparms[0], cmd.dparms[1], (long) cmd.dparms[2]);
    break; 
  case SoDa::Command::HWMB_REP:
    emit(repHWMBVersion(QString(cmd.sparm)));
    break; 
  case SoDa::Command::SDR_VERSION:
    emit(repSDRVersion(QString(cmd.sparm)));
    break; 
  case SoDa::Command::RX_AF_FILTER_SHAPE:
    emit(repMarkerOffset(cmd.dparms[0], cmd.dparms[1])); 
    break; 
  case SoDa::Command::INIT_SETUP_COMPLETE:
    emit(initSetupComplete());
    break;
  case SoDa::Command::TX_STATE:
    emit(repPTT(cmd.iparms[0] == 1));
    break; 
  case SoDa::Command::GPS_UTC:
    emit(repGPSTime(cmd.iparms[0], cmd.iparms[1], cmd.iparms[2]));
    break; 
  case SoDa::Command::GPS_LATLON:
    emit(repGPSLatLon(cmd.dparms[0], cmd.dparms[1]));
    break; 
  default:
    break; 
  }
  return true; 
}

void GUISoDa::Listener::setRXAnt(const QString & antname)
{
  if(!put(SoDa::Command(SoDa::Command::SET, SoDa::Command::RX_ANT, antname.toStdString()))) {
    perror("What happened here?");
  }
}

void GUISoDa::Listener::setTXAnt(const QString & antname)
{
  if(!put(SoDa::Command(SoDa::Command::SET, SoDa::Command::TX_ANT, antname.toStdString()))) {
    perror("What happened here?");
  }
}

void GUISoDa::Listener::setSpectrumCenter(double freq) 
{
  if(!put(SoDa::Command(SoDa::Command::SET, SoDa::Command::SPEC_CENTER_FREQ, freq))) {
    perror("What happened here?");
  }
}

void GUISoDa::Listener::setSpectrumUpdateRate(int rate)
{
  if(!put(SoDa::Command(SoDa::Command::SET, SoDa::Command::SPEC_UPDATE_RATE, rate))) {
    perror("What happened here?");
  }
}  

void GUISoDa::Listener::setSpectrumAvgWindow(int window)
{
  if(!put(SoDa::Command(SoDa::Command::SET, SoDa::Command::SPEC_AVG_WINDOW, window))) {
    perror("What happened here?");
  }
}

void GUISoDa::Listener::setCWSpeed(int speed)
{
  if(!put(SoDa::Command(SoDa::Command::SET, SoDa::Command::TX_CW_SPEED, speed))) {
    perror("What happened here?");
  }
}

void GUISoDa::Listener::setSidetoneVolume(int vol)
{
  if(!put(SoDa::Command(SoDa::Command::SET, SoDa::Command::RX_AF_SIDETONE_GAIN, (double) vol))) {
    perror("What happened here?");
  }
}

void GUISoDa::Listener::setTXPower(int power)
{
  if(!put(SoDa::Command(SoDa::Command::SET, SoDa::Command::TX_RF_GAIN, (double) power))) {
    perror("What happened here?");
  }
}

void GUISoDa::Listener::setPTT(bool on)
{
  int tx_state = on ? 1 : 0;
  if(!put(SoDa::Command(SoDa::Command::SET, SoDa::Command::TX_STATE, tx_state))) {
    perror("What happened here?");
  }
}

void GUISoDa::Listener::clearCWBuffer()
{
  if(!put(SoDa::Command(SoDa::Command::SET, SoDa::Command::TX_CW_FLUSHTEXT))) {
    perror("What happened here?");
  }
}

void GUISoDa::Listener::sendCW(const QString & txt)
{
  char cwbuf[SoDa::Command::getMaxStringLen()]; 
  unsigned int i, j; 
  for(i = 0, j = 0; i <= txt.size(); i++) {
    if(i == txt.size()) {
      cwbuf[j] = '\000';
    }
    else {
      char c = txt.at(i).toLatin1();
      if(isprint(c)) {
    cwbuf[j] = c; 
      }
      else {
    cwbuf[j] = ' '; 
      }
    }

    j++; 

    if((j >= SoDa::Command::getMaxStringLen()) || (i == txt.size())) {
      if(!put(SoDa::Command(SoDa::Command::SET, SoDa::Command::TX_CW_TEXT, cwbuf))) {
    perror("What happened here?");
      }
      j = 0; 
    }
  }
}

bool GUISoDa::Listener::handleSET(const SoDa::Command & cmd)
{
  switch(cmd.target) {
  default:
    break; 
  }
  
  return true; 
}

bool GUISoDa::Listener::handleGET(const SoDa::Command & cmd)
{
  switch(cmd.target) {
  default:
    break; 
  }
  return true; 
}

void GUISoDa::Listener::closeRadio()
{
  if(!put(SoDa::Command(SoDa::Command::SET, SoDa::Command::STOP, 0))) {
    perror("What happened here  -- listener closeRadio?");
  }
}