implement individual gain stages option

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])