weakaudio.py 文件源码

def x_pya_input_rate(card, rate):
    import pyaudio
    rates = [ rate, 8000, 11025, 12000, 16000, 22050, 44100, 48000 ]
    for r in rates:
        if r >= rate:
            ok = False
            try:
                ok = pya().is_format_supported(r,
                                               input_device=card,
                                               input_format=pyaudio.paInt16,
                                               input_channels=1)
            except:
                pass
            if ok:
                return r
    sys.stderr.write("weakaudio: no input rate >= %d\n" % (rate))
    sys.exit(1)

# sub-process to avoid initializing pyaudio in main
# process, since that makes subsequent forks and
# multiprocessing not work.