add the option to disable the scondary fft

csdr/chain/demodulator.py

@@ -64,6 +64,9 @@ class SecondaryDemodulator(Chain):
     def setSampleRate(self, sampleRate: int) -> None:
         pass
 
+    def isSecondaryFftShown(self):
+        return True
+
 
 class ServiceDemodulator(SecondaryDemodulator, FixedAudioRateChain, metaclass=ABCMeta):
     pass

csdr/chain/dump1090.py

@@ -19,3 +19,6 @@ class Dump1090(ServiceDemodulator):
 
     def getFixedAudioRate(self) -> int:
         return 2400000
+
+    def isSecondaryFftShown(self):
+        return False

htdocs/lib/DemodulatorPanel.js

@@ -158,7 +158,8 @@ DemodulatorPanel.prototype.disableDigiMode = function() {
 DemodulatorPanel.prototype.updatePanels = function() {
     var modulation = this.getDemodulator().get_secondary_demod();
     $('#openwebrx-panel-digimodes').attr('data-mode', modulation);
-    toggle_panel("openwebrx-panel-digimodes", !!modulation);
+    var mode = Modes.findByModulation(modulation);
+    toggle_panel("openwebrx-panel-digimodes", modulation && (!mode || mode.secondaryFft));
     toggle_panel("openwebrx-panel-wsjt-message", ['ft8', 'wspr', 'jt65', 'jt9', 'ft4', 'fst4', 'fst4w', "q65", "msk144"].indexOf(modulation) >= 0);
     toggle_panel("openwebrx-panel-js8-message", modulation === "js8");
     toggle_panel("openwebrx-panel-packet-message", modulation === "packet");

htdocs/lib/Modes.js

@@ -43,6 +43,7 @@ var Mode = function(json){
     }
     if (this.type === 'digimode') {
         this.underlying = json.underlying;
+        this.secondaryFft = json.secondaryFft;
     }
 };
 

owrx/connection.py

@@ -443,6 +443,7 @@ class OpenWebRxReceiverClient(OpenWebRxClient, SdrSourceEventClient):
                 res["bandpass"] = {"low_cut": m.bandpass.low_cut, "high_cut": m.bandpass.high_cut}
             if isinstance(m, DigitalMode):
                 res["underlying"] = m.underlying
+                res["secondaryFft"] = m.secondaryFft
             return res
 
         self.send({"type": "modes", "value": [to_json(m) for m in modes]})

owrx/dsp.py

@@ -196,11 +196,11 @@ class ClientDemodulatorChain(Chain):
                 self.secondaryDemodulator.setReader(self.audioBuffer.getReader())
             self.secondaryDemodulator.setWriter(self.secondaryWriter)
 
-        if self.secondaryDemodulator is None and self.secondaryFftChain is not None:
+        if (self.secondaryDemodulator is None or not self.secondaryDemodulator.isSecondaryFftShown()) and self.secondaryFftChain is not None:
             self.secondaryFftChain.stop()
             self.secondaryFftChain = None
 
-        if self.secondaryDemodulator is not None and self.secondaryFftChain is None:
+        if (self.secondaryDemodulator is not None and self.secondaryDemodulator.isSecondaryFftShown()) and self.secondaryFftChain is None:
             self._createSecondaryFftChain()
 
         if self.secondaryFftChain is not None:

owrx/modes.py

@@ -42,10 +42,19 @@ class AnalogMode(Mode):
 
 class DigitalMode(Mode):
     def __init__(
-        self, modulation, name, underlying, bandpass: Bandpass = None, requirements=None, service=False, squelch=True
+        self,
+        modulation,
+        name,
+        underlying,
+        bandpass: Bandpass = None,
+        requirements=None,
+        service=False,
+        squelch=True,
+        secondaryFft=True
     ):
         super().__init__(modulation, name, bandpass, requirements, service, squelch)
         self.underlying = underlying
+        self.secondaryFft = secondaryFft
 
     def get_underlying_mode(self):
         mode = Modes.findByModulation(self.underlying[0])
@@ -162,6 +171,7 @@ class Modes(object):
             bandpass=Bandpass(-1e6, 1e6),
             requirements=["dump1090"],
             squelch=False,
+            secondaryFft=False,
         ),
     ]