py_error_handler.py

from ctypes import *
from contextlib import contextmanager
import pyaudio

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


c_error_handler = ERROR_HANDLER_FUNC(py_error_handler)


@contextmanager
def noalsaerr():
    asound = cdll.LoadLibrary('libasound.so')
    asound.snd_lib_error_set_handler(c_error_handler)
    yield
    asound.snd_lib_error_set_handler(None)


# usage example
# with noalsaerr():
#     p = pyaudio.PyAudio()
# stream = p.open(format=pyaudio.paFloat32, channels=1, rate=44100, output=1)