init

detector.py

@@ -0,0 +1,43 @@
+#!/usr/bin/python
+import pyaudio
+import array
+import time
+import sys
+
+CHUNK = 1024
+
+p = pyaudio.PyAudio()
+
+stream = p.open(format = pyaudio.paInt16,
+                channels = 1,
+                rate = 48000,
+                input = True,
+                frames_per_buffer = CHUNK,
+                input_device_index = 0)
+
+last = time.time()
+
+print 'pause'
+sys.stdout.flush()
+
+while True:
+    try:
+        data = stream.read(CHUNK)
+    except:
+        stream.stop_stream()
+        stream.start_stream()
+        continue
+    data = array.array("h", data)
+    if last < time.time() - 1:
+        if max(data) < -32000:
+            last = time.time()
+            print 'pause'
+            sys.stdout.flush()
+        if min(data) > 32000:
+            last = time.time()
+            print 'pause'
+            sys.stdout.flush()
+
+stream.stop_stream()
+stream.close()
+p.terminate()