Added debugging code to print chains and their individual objects.

csdr/chain/__init__.py

@@ -3,6 +3,10 @@ from pycsdr.modules import Buffer
 from pycsdr.types import Format
 from typing import Union, Callable, Optional
 
+import logging
+
+logger = logging.getLogger(__name__)
+
 
 class Chain(Module):
     def __init__(self, workers):
@@ -145,3 +149,14 @@ class Chain(Module):
             return self.workers[-1].getOutputFormat()
         else:
             raise BufferError("getOutputFormat on empty chain")
+
+    def printWorkers(self, prefix: str = ""):
+        logger.debug("{0}{1}".format(prefix, self))
+        for w in self.workers:
+            if isinstance(w, Chain):
+                w.printWorkers(prefix + "  ")
+            else:
+                logger.debug("{0}  {1}".format(prefix, w))
+
+    def __str__(self):
+        return "{0}({1} workers)".format(type(self).__name__, len(self.workers))

csdr/chain/selector.py

@@ -77,6 +77,14 @@ class Decimator(Chain):
         self.inputRate = inputRate
         self._reconfigure()
 
+    def __str__(self):
+        decimation, fraction = self._getDecimation(self.outputRate)
+        transition = 0.15 * (self.outputRate / float(self.inputRate))
+        cutoff = 0.5 * decimation / (self.inputRate / self.outputRate)
+        return "{0}(decimation {1} * {2}, transition {3}, cutoff {4})".format(
+            type(self).__name__, decimation, fraction, transition, cutoff
+        )
+
 
 class Selector(Chain):
     def __init__(self, inputRate: int, outputRate: int, withSquelch: bool = True):
@@ -177,10 +185,21 @@ class Selector(Chain):
         self.decimation.setInputRate(inputRate)
         self._updateShift()
 
+    def __str__(self):
+        return "{0}({1} => offset {2} => bandpass {3}..{4} => {5})".format(
+            type(self).__name__,
+            self.inputRate,
+            self.frequencyOffset,
+            self.bandpassCutoffs[0],
+            self.bandpassCutoffs[1],
+            self.outputRate
+        )
+
 
 class SecondarySelector(Chain):
     def __init__(self, sampleRate: int, bandwidth: float):
         self.sampleRate = sampleRate
+        self.bandwidth = bandwidth
         self.frequencyOffset = 0
         self.shift = Shift(0.0)
         cutoffRate = bandwidth / sampleRate
@@ -196,6 +215,16 @@ class SecondarySelector(Chain):
             return
         self.shift.setRate(-offset / self.sampleRate)
 
+    def __str__(self):
+        return "{0}({1} => offset {2} => bandpass {3}..{4} => {5})".format(
+            type(self).__name__,
+            self.sampleRate,
+            self.frequencyOffset,
+            -self.bandwidth,
+            self.bandwidth,
+            self.sampleRate
+        )
+
 
 class SelectorError(Exception):
     pass

owrx/version.py

@@ -1,5 +1,5 @@
 from distutils.version import LooseVersion
 
-_versionstring = "1.2.57"
+_versionstring = "1.2.58"
 looseversion = LooseVersion(_versionstring)
 openwebrx_version = "v{0}".format(looseversion)