# getMouthOpenThreshold method

int getMouthOpenThreshold()

Gets the mouth opening threshold. If the mouth opening score is above this value, the mouth of detected face is definitely open. Hint: Default value is 35.

return Mouth opening threshold. throws FaceException An error has occurred during Face Library execution.

## Implementation

    int getMouthOpenThreshold() {
      Pointer<Int> pMouthOpenThreshold = calloc();
      try {
        var err = faceSDK.id3FacePortraitProcessor_GetMouthOpenThreshold(_pHandle.value, pMouthOpenThreshold);
        if (err != FaceError.success.value) {
          throw FaceException(err);
        }
        final vMouthOpenThreshold = pMouthOpenThreshold.value;
        return vMouthOpenThreshold;
      } finally {
        calloc.free(pMouthOpenThreshold);
      }
    }