start method

Future<void> start()

Opens audio input stream and sends audio frames to Porcupine Throws a PvAudioException if there was a problem starting the audio engine

Implementation

Future<void> start() async {
  if (_porcupine == null || _voiceProcessor == null) {
    throw new PvStateError(
        "Cannot start Porcupine - resources have already been released");
  }

  if (await _voiceProcessor?.hasRecordAudioPermission() ?? false) {
    try {
      await _voiceProcessor?.start();
    } on PlatformException {
      throw new PvAudioException(
          "Audio engine failed to start. Hardware may not be supported.");
    }
  } else {
    throw new PvAudioException(
        "User did not give permission to record audio.");
  }
}