VoiceRecognition

VoiceRecognitionLoopFunction.swift

// Tells the delegate when the recognition of all requested utterances is finished.
// @see https://developer.apple.com/reference/speech/sfspeechrecognitiontaskdelegate/1649215-speechrecognitiontask
open func speechRecognitionTask(_ task: SFSpeechRecognitionTask, didFinishSuccessfully successfully: Bool) {
    resetSRMethod()
}

func resetSRMethod() {
    stopNoAudioDurationTimer()
    stopTimer()
    InterruptEvent()
    chickenStatus = .ChickenReady
    recordButtonTapped()
}

fileprivate func recordButtonTapped() {
    var ret = ""
    self.localeIdentifier = locale

    if audioEngine.isRunning {
        audioEngine.stop()
        recognitionRequest?.endAudio()
        ret = self.recognizedText
        let inputNode = self.getInputNode()
        inputNode.removeTap(onBus: 0)
        self.stopTimer()
    } else {
        self.delegate?.ChickenVRManagerStart(self)
        self.recognizedText = ""
        try! startRecording()
        self.startTimer()
        ret = "recognizeNow"
    }
    return ret
}

func startTimer() {
    recognitionLimiter = Timer.scheduledTimer(
        timeInterval: TimeInterval(self.recognitionLimitSec),
        target: self,
        selector:#selector(InterruptEvent),
        userInfo: nil,
        repeats: false
    )
}

@objc func InterruptEvent() {
    var ret = ""
    if audioEngine.isRunning {
        audioEngine.stop()
        recognitionRequest?.endAudio()
        ret = self.recognizedText
    }
    let inputNode = self.getInputNode()
    inputNode.removeTap(onBus: 0)
    self.recognitionRequest = nil
    self.recognitionTask = nil
    recognitionLimiter = nil
    noAudioDurationTimer = nil
    self.resetAVAudioSession()
    delegate?.ChickenVRManagerTimeout(self, ret)
}