ZXing Code128 helper

public class Code128WriterPreprocessor {
    private static final char ESCAPE_FNC_1 = '\u00f1';
    private static final char ESCAPE_FNC_2 = '\u00f2';
    private static final char ESCAPE_FNC_3 = '\u00f3';
    private static final char ESCAPE_FNC_4 = '\u00f4';
    private static final String ENCODING_LATIN_1 = "latin1";

    public static String process(String data) {
        Byte[] dataBytes;

        try {
            dataBytes = convertBytesFromPrimitive(data.getBytes(ENCODING_LATIN_1));
        } catch (UnsupportedEncodingException e) {
            Timber.e("Can't read bytes from data", e);
            return data;
        }

        for (int i = 0; i < dataBytes.length; i++) {
            if (dataBytes[0] == (byte) ESCAPE_FNC_1 || dataBytes[0] == (byte) ESCAPE_FNC_2 ||
                    dataBytes[0] == (byte) ESCAPE_FNC_3 || dataBytes[0] == (byte) ESCAPE_FNC_4) {
                continue;
            }

            if (dataBytes[i] < 0) { // Byte is out of range
                dataBytes[i] = (byte) (dataBytes[i] + 128); // Set in range
                dataBytes = addEscapeFunc4OnPosition(dataBytes, i); // Add escape char
            }
        }

        try {
            return new String(convertBytesToPrimitive(dataBytes), ENCODING_LATIN_1);
        } catch (UnsupportedEncodingException e) {
            Timber.e("Encoding error", e);
            return data;
        }
    }

    private static Byte[] convertBytesFromPrimitive(byte[] data) {
        Byte[] byteArray = new Byte[data.length];

        for (int i = 0; i < byteArray.length; i++) {
            byteArray[i] = data[i];
        }

        return byteArray;
    }

    private static byte[] convertBytesToPrimitive(Byte[] data) {
        byte[] byteArray = new byte[data.length];

        for (int i = 0; i < byteArray.length; i++) {
            byteArray[i] = data[i];
        }

        return byteArray;
    }

    private static Byte[] addEscapeFunc4OnPosition(Byte[] data, int position) {
        Byte[] result = new Byte[data.length];
        List<Byte> list = new ArrayList<>(Arrays.asList(data));
        list.add(position, (byte) ESCAPE_FNC_4);
        return list.toArray(result);
    }