implement new buffer input / output api

owrx/fft.py

@@ -31,7 +31,7 @@ class SpectrumThread(csdr.output, SdrSourceEventClient):
 
         self.dsp = dsp = csdr.dsp(self)
         dsp.nc_port = self.sdrSource.getPort()
-        dsp.setSocketClient(self.sdrSource.getSocketClient())
+        dsp.setBuffer(self.sdrSource.getBuffer())
         dsp.set_demodulator("fft")
 
         self.subscriptions = [

owrx/source/__init__.py

@@ -11,7 +11,7 @@ from owrx.command import CommandMapper
 from owrx.socket import getAvailablePort
 from owrx.property import PropertyStack, PropertyLayer
 
-from pycsdr import SocketClient
+from pycsdr import SocketClient, Buffer
 
 import logging
 
@@ -51,6 +51,7 @@ class SdrSource(ABC):
 
         self.commandMapper = None
         self.socketClient = None
+        self.buffer = None
 
         self.props = PropertyStack()
         # layer 0 reserved for profile properties
@@ -144,12 +145,18 @@ class SdrSource(ABC):
     def getPort(self):
         return self.port
 
-    def getSocketClient(self):
+    def _getSocketCLient(self):
         with self.modificationLock:
             if self.socketClient is None:
                 self.socketClient = SocketClient(self.port)
         return self.socketClient
 
+    def getBuffer(self):
+        if self.buffer is None:
+            self.buffer = Buffer()
+            self._getSocketCLient().setOutput(self.buffer)
+        return self.buffer
+
     def getCommandValues(self):
         dict = self.sdrProps.__dict__()
         if "lfo_offset" in dict and dict["lfo_offset"] is not None: