audio.py 文件源码

def Listen(self, milliseconds=None, dialogid=None):
        success, state_micpipeline, pending = self._mic_pipeline.get_state(Gst.CLOCK_TIME_NONE)
        if state_micpipeline == Gst.State.PLAYING:
            self._log.info("Was already listening")
            aplay(TIMEOUT_BEEP, _bg=True)
            return False
        self._log.info("Starting listening, timeout milliseconds=%s, dialog=%s", milliseconds, dialogid)
        self.audio_pipeline.set_state(Gst.State.READY)
        self.audio_player.set_state(Gst.State.READY)        
        self._waitForNothingPlaying()
        if milliseconds:
            self._listening_timeout_timer = GObject.timeout_add(milliseconds, self.cancelListen)
        aplay(LISTENING_BEEP, _bg=True)
        self._mic_pipeline.dialogid = dialogid
        self.speaking_started = False
        self.silence_count = 0
        self._mic_pipeline.set_state(Gst.State.PLAYING)