Examples with DecodingFailedException jp.sourceforge.qrcode.exception.DecodingFailedException used on opensource projects

Example 6 with DecodingFailedException

use of jp.sourceforge.qrcode.exception.DecodingFailedException in project qrcode by yanbe.

the class QRCodeDecoder method decode.

public byte[] decode(QRCodeImage qrCodeImage) throws DecodingFailedException {
    Point[] adjusts = getAdjustPoints();
    Vector results = new Vector();
    numTryDecode = 0;
    while (numTryDecode < adjusts.length) {
        try {
            DecodeResult result = decode(qrCodeImage, adjusts[numTryDecode]);
            if (result.isCorrectionSucceeded()) {
                return result.getDecodedBytes();
            } else {
                results.addElement(result);
                canvas.println("Decoding succeeded but could not correct");
                canvas.println("all errors. Retrying..");
            }
        } catch (DecodingFailedException dfe) {
            if (dfe.getMessage().indexOf("Finder Pattern") >= 0)
                throw dfe;
        } finally {
            numTryDecode += 1;
        }
    }
    if (results.size() == 0)
        throw new DecodingFailedException("Give up decoding");
    int minErrorIndex = -1;
    int minError = Integer.MAX_VALUE;
    for (int i = 0; i < results.size(); i++) {
        DecodeResult result = (DecodeResult) results.elementAt(i);
        if (result.getNumCorrectuionFailures() < minError) {
            minError = result.getNumCorrectuionFailures();
            minErrorIndex = i;
        }
    }
    canvas.println("All trials need for correct error");
    canvas.println("Reporting #" + (minErrorIndex) + " that,");
    canvas.println("corrected minimum errors (" + minError + ")");
    canvas.println("Decoding finished.");
    return ((DecodeResult) results.elementAt(minErrorIndex)).getDecodedBytes();
}