Merge pull request Kitt-AI#417 from Kitt-AI/devel

Fixed asound issue on OSX for the Python demo

Author: chenguoguo

examples/Python/snowboydecoder.py

@@ -19,19 +19,23 @@
 DETECT_DING = os.path.join(TOP_DIR, "resources/ding.wav")
 DETECT_DONG = os.path.join(TOP_DIR, "resources/dong.wav")
 
-ERROR_HANDLER_FUNC = CFUNCTYPE(None, c_char_p, c_int, c_char_p, c_int, c_char_p)
-
 def py_error_handler(filename, line, function, err, fmt):
     pass
 
+ERROR_HANDLER_FUNC = CFUNCTYPE(None, c_char_p, c_int, c_char_p, c_int, c_char_p)
+
 c_error_handler = ERROR_HANDLER_FUNC(py_error_handler)
 
 @contextmanager
 def no_alsa_error():
-    asound = cdll.LoadLibrary('libasound.so')
-    asound.snd_lib_error_set_handler(c_error_handler)
-    yield
-    asound.snd_lib_error_set_handler(None)
+    try:
+        asound = cdll.LoadLibrary('libasound.so')
+        asound.snd_lib_error_set_handler(c_error_handler)
+        yield
+        asound.snd_lib_error_set_handler(None)
+    except:
+        yield
+        pass
 
 class RingBuffer(object):
     """Ring buffer to hold audio from PortAudio"""

examples/Python3/snowboydecoder.py

@@ -19,19 +19,23 @@
 DETECT_DING = os.path.join(TOP_DIR, "resources/ding.wav")
 DETECT_DONG = os.path.join(TOP_DIR, "resources/dong.wav")
 
-ERROR_HANDLER_FUNC = CFUNCTYPE(None, c_char_p, c_int, c_char_p, c_int, c_char_p)
-
 def py_error_handler(filename, line, function, err, fmt):
     pass
 
+ERROR_HANDLER_FUNC = CFUNCTYPE(None, c_char_p, c_int, c_char_p, c_int, c_char_p)
+
 c_error_handler = ERROR_HANDLER_FUNC(py_error_handler)
 
 @contextmanager
 def no_alsa_error():
-    asound = cdll.LoadLibrary('libasound.so')
-    asound.snd_lib_error_set_handler(c_error_handler)
-    yield
-    asound.snd_lib_error_set_handler(None)
+    try:
+        asound = cdll.LoadLibrary('libasound.so')
+        asound.snd_lib_error_set_handler(c_error_handler)
+        yield
+        asound.snd_lib_error_set_handler(None)
+    except:
+        yield
+        pass
 
 class RingBuffer(object):
     """Ring buffer to hold audio from PortAudio"""