first steps at rewiring the dsp stuff

csdr/chain/clientaudio.py

@@ -6,6 +6,8 @@ from pycsdr.types import Format
 class ClientAudioChain(Chain):
     def __init__(self, format: Format, inputRate: int, clientRate: int, compression: str):
         workers = []
+        self.inputRate = inputRate
+        self.clientRate = clientRate
         if inputRate != clientRate:
             # we only have an audio resampler for float ATM so if we need to resample, we need to convert
             if format != Format.FLOAT:
@@ -15,4 +17,24 @@ class ClientAudioChain(Chain):
             workers += [Convert(format, Format.SHORT)]
         if compression == "adpcm":
             workers += [AdpcmEncoder(sync=True)]
-        super().__init__(*workers)
+        super().__init__(workers)
+
+    def setFormat(self, format: Format) -> None:
+        pass
+
+    def setInputRate(self, inputRate: int) -> None:
+        if inputRate == self.inputRate:
+            return
+
+    def setClientRate(self, clientRate: int) -> None:
+        if clientRate == self.clientRate:
+            return
+
+    def setAudioCompression(self, compression: str) -> None:
+        index = self.indexOf(lambda x: isinstance(x, AdpcmEncoder))
+        if compression == "adpcm":
+            if index < 0:
+                self.append(AdpcmEncoder(sync=True))
+        else:
+            if index >= 0:
+                self.remove(index)