implement individual gain stages option

owrx/form/device.py

@@ -1,33 +1,113 @@
 from owrx.form import Input
+from owrx.soapy import SoapySettings
 
 
 class GainInput(Input):
-    def render_input(self, value):
+    def __init__(self, id, label, gain_stages=None):
-        auto_mode = value is None or value == "auto"
+        super().__init__(id, label)
+        self.gain_stages = gain_stages
 
+    def render_input(self, value):
         return """
             <div id="{id}">
                 <select class="{classes}" id="{id}-select" name="{id}-select">
-                    <option value="auto" {auto_selected}>Enable hardware AGC</option>
+                    {options}
-                    <option value="manual" {manual_selected}>Specify manual gain</option>
                 </select>
                 <div class="option manual" style="display: none;">
-                    <input type="number" id="{id}-manual" name="{id}-manual" value="{value}" class="{classes}" placeholder="Manual device gain" value="{value}" step="any">
+                    <input type="number" id="{id}-manual" name="{id}-manual" value="{value}" class="{classes}" placeholder="Manual device gain" step="any">
                 </div>
+                {stageoption}
             </div>
         """.format(
             id=self.id,
             classes=self.input_classes(),
-            value=value,
+            value="0.0" if value is None else value,
             label=self.label,
-            auto_selected="selected" if auto_mode else "",
+            options=self.render_options(value),
-            manual_selected="" if auto_mode else "selected",
+            stageoption=self.render_stage_option(value),
+        )
+
+    def render_options(self, value):
+        options = [
+            ("auto", "Enable hardware AGC"),
+            ("manual", "Specify manual gain"),
+        ]
+        if self.gain_stages:
+            options.append(("stages", "Specify gain stages individually"))
+
+        mode = self.getMode(value)
+
+        return "".join(
+            """
+                <option value="{value}" {selected}>{text}</option>
+            """.format(
+                value=v[0],
+                text=v[1],
+                selected="selected" if mode == v[0] else ""
+            )
+            for v in options
+        )
+
+    def getMode(self, value):
+        if value is None or value == "auto":
+            return "auto"
+
+        try:
+            float(value)
+            return "manual"
+        except ValueError:
+            pass
+
+        return "stages"
+
+    def render_stage_option(self, value):
+        try:
+            value_dict = {k: v for item in SoapySettings.parse(value) for k, v in item.items()}
+        except (AttributeError, ValueError):
+            value_dict = {}
+
+        return """
+            <div class="option stages container container-fluid" style="display: none;">
+                {inputs}
+            </div>
+        """.format(
+            inputs="".join(
+                """
+                    <div class="row">
+                        <div class="col-3">{stage}</div>
+                        <input type="number" id="{id}-{stage}" name="{id}-{stage}" value="{value}" class="col-9 {classes}" placeholder="{stage}" step="any">
+                    </div>
+                """.format(
+                    id=self.id,
+                    stage=stage,
+                    value=value_dict[stage] if stage in value_dict else "",
+                    classes=self.input_classes(),
+                )
+                for stage in self.gain_stages
+            )
         )
 
     def parse(self, data):
+        def getStageValue(stage):
+            input_id = "{id}-{stage}".format(id=self.id, stage=stage)
+            if input_id in data:
+                return data[input_id][0]
+            else:
+                return 0.0
+
         select_id = "{id}-select".format(id=self.id)
         if select_id in data:
-            input_id = "{id}-manual".format(id=self.id)
+            if data[select_id][0] == "manual":
-            if data[select_id][0] == "manual" and input_id in data:
+                input_id = "{id}-manual".format(id=self.id)
-                return {self.id: float(data[input_id][0])}
+                value = 0.0
+                if input_id in data:
+                    try:
+                        value = float(float(data[input_id][0]))
+                    except ValueError:
+                        pass
+                return {self.id: value}
+            if data[select_id][0] == "stages":
+                settings_dict = [{s: getStageValue(s)} for s in self.gain_stages]
+                return {self.id: SoapySettings.encode(settings_dict)}
+
         return {self.id: None}

owrx/form/soapy.py

@@ -1,13 +0,0 @@
-from owrx.form import FloatInput
-
-
-class SoapyGainInput(FloatInput):
-    def __init__(self, id, label, gain_stages):
-        super().__init__(id, label)
-        self.gain_stages = gain_stages
-
-    def render_input(self, value):
-        if not self.gain_stages:
-            return super().render_input(value)
-        # TODO implement input for multiple gain stages here
-        return "soapy gain stages here..."

owrx/soapy.py

@@ -0,0 +1,21 @@
+class SoapySettings(object):
+    @staticmethod
+    def parse(dstr):
+        def decodeComponent(c):
+            kv = c.split("=", 1)
+            if len(kv) < 2:
+                return c
+            else:
+                return {kv[0]: kv[1]}
+
+        return [decodeComponent(c) for c in dstr.split(",")]
+
+    @staticmethod
+    def encode(dobj):
+        def encodeComponent(c):
+            if isinstance(c, str):
+                return c
+            else:
+                return ",".join(["{0}={1}".format(key, value) for key, value in c.items()])
+
+        return ",".join([encodeComponent(c) for c in dobj])

owrx/source/soapy.py

@@ -4,7 +4,8 @@ from owrx.source.connector import ConnectorSource, ConnectorDeviceDescription
 from typing import List
 from owrx.form import Input, TextInput
 from owrx.form.converter import OptionalConverter
-from owrx.form.soapy import SoapyGainInput
+from owrx.form.device import GainInput
+from owrx.soapy import SoapySettings
 
 
 class SoapyConnectorSource(ConnectorSource, metaclass=ABCMeta):
@@ -33,25 +34,6 @@ class SoapyConnectorSource(ConnectorSource, metaclass=ABCMeta):
     def getEventNames(self):
         return super().getEventNames() + list(self.getSoapySettingsMappings().keys())
 
-    def parseDeviceString(self, dstr):
-        def decodeComponent(c):
-            kv = c.split("=", 1)
-            if len(kv) < 2:
-                return c
-            else:
-                return {kv[0]: kv[1]}
-
-        return [decodeComponent(c) for c in dstr.split(",")]
-
-    def encodeDeviceString(self, dobj):
-        def encodeComponent(c):
-            if isinstance(c, str):
-                return c
-            else:
-                return ",".join(["{0}={1}".format(key, value) for key, value in c.items()])
-
-        return ",".join([encodeComponent(c) for c in dobj])
-
     def buildSoapyDeviceParameters(self, parsed, values):
         """
         this method always attempts to inject a driver= part into the soapysdr query, depending on what connector was used.
@@ -79,11 +61,11 @@ class SoapyConnectorSource(ConnectorSource, metaclass=ABCMeta):
     def getCommandValues(self):
         values = super().getCommandValues()
         if "device" in values and values["device"] is not None:
-            parsed = self.parseDeviceString(values["device"])
+            parsed = SoapySettings.parse(values["device"])
         else:
             parsed = []
         modified = self.buildSoapyDeviceParameters(parsed, values)
-        values["device"] = self.encodeDeviceString(modified)
+        values["device"] = SoapySettings.encode(modified)
         settings = ",".join(["{0}={1}".format(k, v) for k, v in self.buildSoapySettings(values).items()])
         if len(settings):
             values["soapy_settings"] = settings
@@ -111,7 +93,7 @@ class SoapyConnectorDeviceDescription(ConnectorDeviceDescription):
                     infotext='SoapySDR device identifier string (example: "serial=123456789")',
                     converter=OptionalConverter()
                 ),
-                SoapyGainInput(
+                GainInput(
                     "rf_gain",
                     "Device Gain",
                     gain_stages=self.getGainStages(),
@@ -120,4 +102,4 @@ class SoapyConnectorDeviceDescription(ConnectorDeviceDescription):
         )
 
     def getGainStages(self):
-        return []
+        return None