Question

每次我用PyAudio播放声音时我都会收到错误消息，并且在压制它们时遇到了麻烦。

ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave                                                                                     
ALSA lib pcm.c:2217:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear
ALSA lib pcm.c:2217:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe
ALSA lib pcm.c:2217:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side
bt_audio_service_open: connect() failed: Connection refused (111)
bt_audio_service_open: connect() failed: Connection refused (111)
bt_audio_service_open: connect() failed: Connection refused (111)
bt_audio_service_open: connect() failed: Connection refused (111)
ALSA lib pcm_dmix.c:957:(snd_pcm_dmix_open) The dmix plugin supports only playback stream
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
jack server is not running or cannot be started

我已尝试过来自PyAudio working, but spits out error messages each time的解决方案，但我不断收到错误消息

OSError：libasound.so：无法打开共享对象文件：没有这样的文件或目录

我尝试将其更改为libasound.so.2，但在尝试播放声音而不是执行任何操作时会冻结程序。

我包含了我如何使用PyAudio的源代码。在类的初始化中调用alsaMessageSuppress函数。

def alsaMessageSuppress(self):
    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):
        print 'Debug Message Suppressed'
    c_error_handler = ERROR_HANDLER_FUNC(py_error_handler)
    asound = cdll.LoadLibrary('libasound.so.2')
    # Set error handler
    asound.snd_lib_error_set_handler(c_error_handler)

def soundThread(self, sound):

    p = pyaudio.PyAudio()

    duplicated_sound = wave.open(StringIO.StringIO(self.loaded_sounds[sound]), 'rb')

    def callback(in_data, frame_count, time_info, status):
        data = duplicated_sound.readframes(frame_count)
        return (data, pyaudio.paContinue)

    stream = p.open(format=p.get_format_from_width(duplicated_sound.getsampwidth()),
                    channels=duplicated_sound.getnchannels(),
                    rate=duplicated_sound.getframerate(),
                    output=True,
                    stream_callback=callback)

    while stream.is_active():
        sleep(.1)

    stream.stop_stream()
    stream.close()

    #print "%s Finished" % sound

    p.terminate()

    duplicated_sound = None

PyAudio alsa错误消息

0 个答案: