adding in callback for reading chunks

audio/audio.py

@@ -23,7 +23,15 @@ class Audio:
             channels=RESPEAKER_CHANNELS,
             input=True,
             input_device_index=RESPEAKER_INDEX,
-            start=False,)
+            start=False,
+            stream_callback=self.readCallback,)
+
+    def readCallback(self, out_data, frame_count, time_info, status):
+        print("reading chunk")
+        self.frames.append(out_data)
+        # If len(data) is less than requested frame_count, PyAudio automatically
+        # assumes the stream is finished, and the stream stops.
+        return (out_data, pyaudio.paContinue)
 
     def isRecording(self):
         return self.recordStream.is_active()
@@ -33,11 +41,6 @@ class Audio:
         self.recordStream.start_stream()
         self.frames = []
 
-    def readChunk(self):
-        print("reading chunk")
-        data = self.recordStream.read(CHUNK)
-        self.frames.append(data)
-
     def stopRecord(self, play=True, save=False):
         print("* done recording")
         self.recordStream.stop_stream()

push_to_record_and_play.py

@@ -18,15 +18,12 @@ GPIO.setup(BUTTON, GPIO.IN)
 audioInstance = audio.Audio()
 
 while True:
-    if audioInstance.isRecording():
-        audioInstance.readChunk()
-
     state = GPIO.input(BUTTON)
 
     if state:
         print("button: OFF")
         if audioInstance.isRecording():
-            audioInstance.stopRecord()
+            audioInstance.stopRecord(play=False)
     else:
         print("button: ON")
         if not audioInstance.isRecording():