SWHear.py 文件源码

def valid_test(self,device,rate=44100):
        """given a device ID and a rate, return TRUE/False if it's valid."""
        try:
            self.info=self.p.get_device_info_by_index(device)
            if not self.info["maxInputChannels"]>0:
                return False
            stream=self.p.open(format=pyaudio.paInt16,channels=1,
               input_device_index=device,frames_per_buffer=self.chunk,
               rate=int(self.info["defaultSampleRate"]),input=True)
            stream.close()
            return True
        except:
            return False