make AGC optional

owrx/source/__init__.py

@@ -468,6 +468,7 @@ class SdrDeviceDescription(object):
         return [
             TextInput("name", "Device name"),
             CheckboxInput("enabled", "Enable this device", converter=OptionalConverter(defaultFormValue=True)),
+            GainInput("rf_gain", "Device gain", self.hasAgc()),
             NumberInput(
                 "ppm",
                 "Frequency correction",
@@ -482,7 +483,6 @@ class SdrDeviceDescription(object):
                 "services",
                 "Run background services on this device",
             ),
-            GainInput("rf_gain", "Device gain"),
             NumberInput(
                 "lfo_offset",
                 "Oscilator offset",
@@ -500,6 +500,10 @@ class SdrDeviceDescription(object):
             NumberInput("initial_squelch_level", "Initial squelch level", append="dBFS"),
         ]
 
+    def hasAgc(self):
+        # default is True since most devices have agc. override in subclasses if agc is not available
+        return True
+
     def getMandatoryKeys(self):
         return ["name", "enabled"]
 

owrx/source/sddc.py

@@ -7,4 +7,5 @@ class SddcSource(ConnectorSource):
 
 
 class SddcDeviceDescription(ConnectorDeviceDescription):
-    pass
+    def hasAgc(self):
+        return False