break apart the ever-growing owrx/source.py

owrx/source/connector.py

@@ -0,0 +1,63 @@
+from . import SdrSource
+from owrx.socket import getAvailablePort
+import socket
+
+import logging
+
+logger = logging.getLogger(__name__)
+
+
+class ConnectorSource(SdrSource):
+    def __init__(self, id, props, port):
+        super().__init__(id, props, port)
+        self.controlSocket = None
+        self.controlPort = getAvailablePort()
+
+    def getEventNames(self):
+        return [
+            "samp_rate",
+            "center_freq",
+            "ppm",
+            "rf_gain",
+            "device",
+            "iqswap",
+            "lfo_offset",
+            "rtltcp_compat",
+        ]
+
+    def sendControlMessage(self, prop, value):
+        logger.debug("sending property change over control socket: {0} changed to {1}".format(prop, value))
+        self.controlSocket.sendall("{prop}:{value}\n".format(prop=prop, value=value).encode())
+
+    def wireEvents(self):
+        def reconfigure(prop, value):
+            if self.monitor is None:
+                return
+            if (
+                    (prop == "center_freq" or prop == "lfo_offset")
+                    and "lfo_offset" in self.rtlProps
+                    and self.rtlProps["lfo_offset"] is not None
+            ):
+                freq = self.rtlProps["center_freq"] + self.rtlProps["lfo_offset"]
+                self.sendControlMessage("center_freq", freq)
+            else:
+                self.sendControlMessage(prop, value)
+
+        self.rtlProps.wire(reconfigure)
+
+    def postStart(self):
+        logger.debug("opening control socket...")
+        self.controlSocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+        self.controlSocket.connect(("localhost", self.controlPort))
+
+    def stop(self):
+        super().stop()
+        if self.controlSocket:
+            self.controlSocket.close()
+            self.controlSocket = None
+
+    def getFormatConversion(self):
+        return None
+
+    def useNmux(self):
+        return False