portaudio.py 文件源码

def __init__(self, name, chunks, chunksize=1024, channels=2, rate="auto"):
        self.elements_per_ringbuffer = chunks
        self.frames_per_element = chunksize
        self.samples_per_frame = channels
        self.bytes_per_sample = 2  # int16
        self.name = name
        self.channels = channels
        self._ringbuffer = collections.deque(
            [b"0"*self.bytes_per_sample*channels*chunksize]*chunks,
            maxlen=self.elements_per_ringbuffer)

        self.p = pyaudio.PyAudio()  # pylint: disable=invalid-name
        default_output = self.p.get_default_output_device_info()
        self.deviceindex = default_output['index']
        if rate == "auto":
            self.rate = default_output['defaultSampleRate']
        else:
            self.rate = rate
        self.has_new_audio = False