Modem instance setting read/write

src/AppFrame.cpp

@@ -856,6 +856,8 @@ void AppFrame::OnIdle(wxIdleEvent& event) {
             demodModeSelectorAdv->setSelection(dType);
 #endif
             demodMuteButton->setSelection(demod->isMuted()?1:-1);
+            newModemArgs = demod->getModemArgs();
+            modemPropertiesUpdated.store(true);
         }
         if (demodWaterfallCanvas->getDragState() == WaterfallCanvas::WF_DRAG_NONE) {
             long long centerFreq = demod->getFrequency();

src/demod/DemodulatorInstance.cpp

@@ -330,3 +330,30 @@ void DemodulatorInstance::setMuted(bool muted) {
 DemodulatorThreadInputQueue *DemodulatorInstance::getIQInputDataPipe() {
     return pipeIQInputData;
 }
+
+ModemArgInfoList DemodulatorInstance::getModemArgs() {
+    Modem *m = demodulatorPreThread->getModem();
+    
+    ModemArgInfoList args;
+    if (m != nullptr) {
+        args = m->getSettings();
+    }
+    return args;
+}
+
+std::string DemodulatorInstance::readModemSetting(std::string setting) {
+    Modem *m = demodulatorPreThread->getModem();
+    
+    if (m) {
+        return m->readSetting(setting);
+    }
+    return "";
+}
+
+void DemodulatorInstance::writeModemSetting(std::string setting, std::string value) {
+    Modem *m = demodulatorPreThread->getModem();
+    
+    if (m) {
+        m->writeSetting(setting, value);
+    }
+}

src/demod/DemodulatorInstance.h

@@ -82,6 +82,10 @@ public:
 
     DemodulatorThreadInputQueue *getIQInputDataPipe();
 
+    ModemArgInfoList getModemArgs();
+    std::string readModemSetting(std::string setting);
+    void writeModemSetting(std::string setting, std::string value);
+    
 protected:
     DemodulatorThreadInputQueue* pipeIQInputData;
     DemodulatorThreadPostInputQueue* pipeIQDemodData;