Some sanity checks. Removed activateSiggen and deactivateSiggen fucntionality, as it has no use.

lasp/lasp_avstream.py

@@ -67,8 +67,6 @@ class StreamMsg(Enum):
     endProcess = auto()
     scanDaqDevices = auto()
 
-    activateSiggen = auto()
-    deactivateSiggen = auto()
     """
     Second part, status messages that are send back on all listeners
     """
@@ -116,7 +114,6 @@ class AudioStream:
         self.running = False
         self.aframectr = 0
         self.avtype = avtype
-        self.siggen_activated = Atomic(False)
 
         api_devices = devices[daqconfig.api]
         self.processCallback = processCallback
@@ -138,6 +135,12 @@ class AudioStream:
 
         if en_in_ch == 0 and en_out_ch == 0:
             raise RuntimeError('No enabled input / output channels')
+        elif en_out_ch == 0 and avtype in (AvType.audio_duplex,
+                                           AvType.audio_output):
+            raise RuntimeError('No enabled output channels')
+        elif en_in_ch == 0 and avtype in (AvType.audio_input,
+                                          AvType.audio_duplex):
+            raise RuntimeError('No enabled input channels')
 
         logging.debug('Ready to start device...')
         samplerate = self.daq.start(self.streamCallback)
@@ -264,7 +267,6 @@ class AvStreamProcess(mp.Process):
 
         # Check for devices
         self.rescanDaqDevices()
-        self.siggen_activated = Atomic(False)
 
         while True:
             try:
@@ -275,13 +277,7 @@ class AvStreamProcess(mp.Process):
                 self.terminate()
             logging.debug(f"Streamprocess obtained message {msg}")
 
-            if msg == StreamMsg.activateSiggen:
-                self.siggen_activated <<= True
-
-            elif msg == StreamMsg.deactivateSiggen:
-                self.siggen_activated <<= False
-
-            elif msg == StreamMsg.scanDaqDevices:
+            if msg == StreamMsg.scanDaqDevices:
                 self.rescanDaqDevices()
 
             elif msg == StreamMsg.stopAllStreams:
@@ -355,7 +351,7 @@ class AvStreamProcess(mp.Process):
                 self.sendAllQueues(
                     StreamMsg.streamError,
                     stream.avtype,
-                    "Error occured in stopping stream: {str(e)}",
+                    f"Error occured in stopping stream: {str(e)}",
                 )
         self.streams[avtype] = None
 
@@ -427,28 +423,22 @@ class AvStreamProcess(mp.Process):
         """This is called (from a separate thread) for each audio block."""
         # logging.debug('streamCallback()')
         if outdata is not None:
-            if self.siggen_activated():
-                if not self.outq.empty():
-                    newdata = self.outq.get()
-                    if newdata.shape[0] != outdata.shape[0] or newdata.ndim != 1:
-                        msgtxt = "Invalid output data obtained from queue"
-                        logging.fatal(msgtxt)
-                        self.sendAllQueues(
-                            StreamMsg.streamFatalError, audiostream.avtype, msgtxt
-                        )
-                        return 1
-                    outdata[:, :] = newdata[:, None]
-                else:
-                    msgtxt = "Signal generator buffer underflow. Signal generator cannot keep up with data generation."
-                    # logging.error(msgtxt)
+            if not self.outq.empty():
+                newdata = self.outq.get()
+                if newdata.shape[0] != outdata.shape[0] or newdata.ndim != 1:
+                    msgtxt = "Invalid output data obtained from queue"
+                    logging.fatal(msgtxt)
                     self.sendAllQueues(
-                        StreamMsg.streamTemporaryError, audiostream.avtype, msgtxt
+                        StreamMsg.streamFatalError, audiostream.avtype, msgtxt
                     )
-                    outdata[:, :] = 0
-
-            # Siggen not activated
+                    return 1
+                outdata[:, :] = newdata[:, None]
             else:
-                logging.debug("siggen not activated")
+                msgtxt = "Signal generator buffer underflow. Signal generator cannot keep up with data generation."
+                # logging.error(msgtxt)
+                self.sendAllQueues(
+                    StreamMsg.streamTemporaryError, audiostream.avtype, msgtxt
+                )
                 outdata[:, :] = 0
 
         if indata is not None:
@@ -617,15 +607,7 @@ class StreamManager:
         self.handleMessages()
         return self.outq
 
-    def activateSiggen(self):
-        self.handleMessages()
-        logging.debug("activateSiggen()")
-        self.sendPipe(StreamMsg.activateSiggen, None)
 
-    def deactivateSiggen(self):
-        self.handleMessages()
-        logging.debug("deactivateSiggen()")
-        self.sendPipe(StreamMsg.deactivateSiggen, None)
 
     def addMsgQueueListener(self):
         """
@@ -692,6 +674,7 @@ class StreamManager:
                     break
 
     def stopStream(self, avtype: AvType):
+        logging.debug(f'StreamManager::stopStream({avtype})')
         self.handleMessages()
         self.sendPipe(StreamMsg.stopStream, avtype)