public void setCameraSettings(CameraSettings cameraSettings) {
        if (!open) {
            this.cameraSettings = cameraSettings;
            this.cameraManager.setCameraSettings(cameraSettings);
        }
    }
This only has an effect if the camera is not opened yet.

@param cameraSettings the new camera settings
zxing-android-embedded/src/com/journeyapps/barcodescanner/camera/CameraInstance.java