plugin.py 文件源码

def mp3_to_wave(self, filename):
        mf = mad.MadFile(filename)
        with tempfile.SpooledTemporaryFile() as f:
            wav = wave.open(f, mode='wb')
            wav.setframerate(mf.samplerate())
            wav.setnchannels(1 if mf.mode() == mad.MODE_SINGLE_CHANNEL else 2)
            # 4L is the sample width of 32 bit audio
            wav.setsampwidth(4)
            frame = mf.read()
            while frame is not None:
                wav.writeframes(frame)
                frame = mf.read()
            wav.close()
            f.seek(0)
            data = f.read()
        return data