package com.google.zxing.qrcode.decoder;
-import com.google.zxing.ReaderException;
-
/**
* <p>See ISO 18004:2006, 6.5.1. This enum encapsulates the four error correction levels
* defined by the QR code standard.</p>
*
* @author Sean Owen
*/
-final class ErrorCorrectionLevel {
+public final class ErrorCorrectionLevel {
// No, we can't use an enum here. J2ME doesn't support it.
/**
* L = ~7% correction
*/
- static final ErrorCorrectionLevel L = new ErrorCorrectionLevel(0);
+ public static final ErrorCorrectionLevel L = new ErrorCorrectionLevel(0, 0x01, "L");
/**
* M = ~15% correction
*/
- static final ErrorCorrectionLevel M = new ErrorCorrectionLevel(1);
+ public static final ErrorCorrectionLevel M = new ErrorCorrectionLevel(1, 0x00, "M");
/**
* Q = ~25% correction
*/
- static final ErrorCorrectionLevel Q = new ErrorCorrectionLevel(2);
+ public static final ErrorCorrectionLevel Q = new ErrorCorrectionLevel(2, 0x03, "Q");
/**
* H = ~30% correction
*/
- static final ErrorCorrectionLevel H = new ErrorCorrectionLevel(3);
+ public static final ErrorCorrectionLevel H = new ErrorCorrectionLevel(3, 0x02, "H");
private static final ErrorCorrectionLevel[] FOR_BITS = {M, L, H, Q};
private final int ordinal;
+ private final int bits;
+ private final String name;
- private ErrorCorrectionLevel(int ordinal) {
+ private ErrorCorrectionLevel(int ordinal, int bits, String name) {
this.ordinal = ordinal;
+ this.bits = bits;
+ this.name = name;
}
- int ordinal() {
+ public int ordinal() {
return ordinal;
}
+ public int getBits() {
+ return bits;
+ }
+
+ public String getName() {
+ return name;
+ }
+
+ public String toString() {
+ return name;
+ }
+
/**
* @param bits int containing the two bits encoding a QR Code's error correction level
* @return {@link ErrorCorrectionLevel} representing the encoded error correction level
*/
- static ErrorCorrectionLevel forBits(int bits) throws ReaderException {
+ public static ErrorCorrectionLevel forBits(int bits) {
if (bits < 0 || bits >= FOR_BITS.length) {
- throw ReaderException.getInstance();
+ throw new IllegalArgumentException();
}
return FOR_BITS[bits];
}