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Example 31 with Result

use of com.google.zxing.Result in project zxing by zxing.

the class UPCEANReader method decodeRow.

/**
   * <p>Like {@link #decodeRow(int, BitArray, Map)}, but
   * allows caller to inform method about where the UPC/EAN start pattern is
   * found. This allows this to be computed once and reused across many implementations.</p>
   *
   * @param rowNumber row index into the image
   * @param row encoding of the row of the barcode image
   * @param startGuardRange start/end column where the opening start pattern was found
   * @param hints optional hints that influence decoding
   * @return {@link Result} encapsulating the result of decoding a barcode in the row
   * @throws NotFoundException if no potential barcode is found
   * @throws ChecksumException if a potential barcode is found but does not pass its checksum
   * @throws FormatException if a potential barcode is found but format is invalid
   */
public Result decodeRow(int rowNumber, BitArray row, int[] startGuardRange, Map<DecodeHintType, ?> hints) throws NotFoundException, ChecksumException, FormatException {
    ResultPointCallback resultPointCallback = hints == null ? null : (ResultPointCallback) hints.get(DecodeHintType.NEED_RESULT_POINT_CALLBACK);
    if (resultPointCallback != null) {
        resultPointCallback.foundPossibleResultPoint(new ResultPoint((startGuardRange[0] + startGuardRange[1]) / 2.0f, rowNumber));
    }
    StringBuilder result = decodeRowStringBuffer;
    result.setLength(0);
    int endStart = decodeMiddle(row, startGuardRange, result);
    if (resultPointCallback != null) {
        resultPointCallback.foundPossibleResultPoint(new ResultPoint(endStart, rowNumber));
    }
    int[] endRange = decodeEnd(row, endStart);
    if (resultPointCallback != null) {
        resultPointCallback.foundPossibleResultPoint(new ResultPoint((endRange[0] + endRange[1]) / 2.0f, rowNumber));
    }
    // Make sure there is a quiet zone at least as big as the end pattern after the barcode. The
    // spec might want more whitespace, but in practice this is the maximum we can count on.
    int end = endRange[1];
    int quietEnd = end + (end - endRange[0]);
    if (quietEnd >= row.getSize() || !row.isRange(end, quietEnd, false)) {
        throw NotFoundException.getNotFoundInstance();
    }
    String resultString = result.toString();
    // UPC/EAN should never be less than 8 chars anyway
    if (resultString.length() < 8) {
        throw FormatException.getFormatInstance();
    }
    if (!checkChecksum(resultString)) {
        throw ChecksumException.getChecksumInstance();
    }
    float left = (startGuardRange[1] + startGuardRange[0]) / 2.0f;
    float right = (endRange[1] + endRange[0]) / 2.0f;
    BarcodeFormat format = getBarcodeFormat();
    Result decodeResult = new Result(resultString, // no natural byte representation for these barcodes
    null, new ResultPoint[] { new ResultPoint(left, rowNumber), new ResultPoint(right, rowNumber) }, format);
    int extensionLength = 0;
    try {
        Result extensionResult = extensionReader.decodeRow(rowNumber, row, endRange[1]);
        decodeResult.putMetadata(ResultMetadataType.UPC_EAN_EXTENSION, extensionResult.getText());
        decodeResult.putAllMetadata(extensionResult.getResultMetadata());
        decodeResult.addResultPoints(extensionResult.getResultPoints());
        extensionLength = extensionResult.getText().length();
    } catch (ReaderException re) {
    // continue
    }
    int[] allowedExtensions = hints == null ? null : (int[]) hints.get(DecodeHintType.ALLOWED_EAN_EXTENSIONS);
    if (allowedExtensions != null) {
        boolean valid = false;
        for (int length : allowedExtensions) {
            if (extensionLength == length) {
                valid = true;
                break;
            }
        }
        if (!valid) {
            throw NotFoundException.getNotFoundInstance();
        }
    }
    if (format == BarcodeFormat.EAN_13 || format == BarcodeFormat.UPC_A) {
        String countryID = eanManSupport.lookupCountryIdentifier(resultString);
        if (countryID != null) {
            decodeResult.putMetadata(ResultMetadataType.POSSIBLE_COUNTRY, countryID);
        }
    }
    return decodeResult;
}
Also used : ResultPointCallback(com.google.zxing.ResultPointCallback) ResultPoint(com.google.zxing.ResultPoint) BarcodeFormat(com.google.zxing.BarcodeFormat) ResultPoint(com.google.zxing.ResultPoint) Result(com.google.zxing.Result) ReaderException(com.google.zxing.ReaderException)

Example 32 with Result

use of com.google.zxing.Result in project zxing by zxing.

the class ITFReader method decodeRow.

@Override
public Result decodeRow(int rowNumber, BitArray row, Map<DecodeHintType, ?> hints) throws FormatException, NotFoundException {
    // Find out where the Middle section (payload) starts & ends
    int[] startRange = decodeStart(row);
    int[] endRange = decodeEnd(row);
    StringBuilder result = new StringBuilder(20);
    decodeMiddle(row, startRange[1], endRange[0], result);
    String resultString = result.toString();
    int[] allowedLengths = null;
    if (hints != null) {
        allowedLengths = (int[]) hints.get(DecodeHintType.ALLOWED_LENGTHS);
    }
    if (allowedLengths == null) {
        allowedLengths = DEFAULT_ALLOWED_LENGTHS;
    }
    // To avoid false positives with 2D barcodes (and other patterns), make
    // an assumption that the decoded string must be a 'standard' length if it's short
    int length = resultString.length();
    boolean lengthOK = false;
    int maxAllowedLength = 0;
    for (int allowedLength : allowedLengths) {
        if (length == allowedLength) {
            lengthOK = true;
            break;
        }
        if (allowedLength > maxAllowedLength) {
            maxAllowedLength = allowedLength;
        }
    }
    if (!lengthOK && length > maxAllowedLength) {
        lengthOK = true;
    }
    if (!lengthOK) {
        throw FormatException.getFormatInstance();
    }
    return new Result(resultString, // no natural byte representation for these barcodes
    null, new ResultPoint[] { new ResultPoint(startRange[1], rowNumber), new ResultPoint(endRange[0], rowNumber) }, BarcodeFormat.ITF);
}
Also used : ResultPoint(com.google.zxing.ResultPoint) ResultPoint(com.google.zxing.ResultPoint) Result(com.google.zxing.Result)

Example 33 with Result

use of com.google.zxing.Result in project android-zxingLibrary by yipianfengye.

the class CodeUtils method analyzeBitmap.

/**
     * 解析二维码图片工具类
     * @param analyzeCallback
     */
public static void analyzeBitmap(String path, AnalyzeCallback analyzeCallback) {
    /**
         * 首先判断图片的大小,若图片过大,则执行图片的裁剪操作,防止OOM
         */
    BitmapFactory.Options options = new BitmapFactory.Options();
    // 先获取原大小
    options.inJustDecodeBounds = true;
    Bitmap mBitmap = BitmapFactory.decodeFile(path, options);
    // 获取新的大小
    options.inJustDecodeBounds = false;
    int sampleSize = (int) (options.outHeight / (float) 400);
    if (sampleSize <= 0)
        sampleSize = 1;
    options.inSampleSize = sampleSize;
    mBitmap = BitmapFactory.decodeFile(path, options);
    MultiFormatReader multiFormatReader = new MultiFormatReader();
    // 解码的参数
    Hashtable<DecodeHintType, Object> hints = new Hashtable<DecodeHintType, Object>(2);
    // 可以解析的编码类型
    Vector<BarcodeFormat> decodeFormats = new Vector<BarcodeFormat>();
    if (decodeFormats == null || decodeFormats.isEmpty()) {
        decodeFormats = new Vector<BarcodeFormat>();
        // 这里设置可扫描的类型,我这里选择了都支持
        decodeFormats.addAll(DecodeFormatManager.ONE_D_FORMATS);
        decodeFormats.addAll(DecodeFormatManager.QR_CODE_FORMATS);
        decodeFormats.addAll(DecodeFormatManager.DATA_MATRIX_FORMATS);
    }
    hints.put(DecodeHintType.POSSIBLE_FORMATS, decodeFormats);
    // 设置继续的字符编码格式为UTF8
    // hints.put(DecodeHintType.CHARACTER_SET, "UTF8");
    // 设置解析配置参数
    multiFormatReader.setHints(hints);
    // 开始对图像资源解码
    Result rawResult = null;
    try {
        rawResult = multiFormatReader.decodeWithState(new BinaryBitmap(new HybridBinarizer(new BitmapLuminanceSource(mBitmap))));
    } catch (Exception e) {
        e.printStackTrace();
    }
    if (rawResult != null) {
        if (analyzeCallback != null) {
            analyzeCallback.onAnalyzeSuccess(mBitmap, rawResult.getText());
        }
    } else {
        if (analyzeCallback != null) {
            analyzeCallback.onAnalyzeFailed();
        }
    }
}
Also used : MultiFormatReader(com.google.zxing.MultiFormatReader) DecodeHintType(com.google.zxing.DecodeHintType) Hashtable(java.util.Hashtable) BarcodeFormat(com.google.zxing.BarcodeFormat) HybridBinarizer(com.google.zxing.common.HybridBinarizer) WriterException(com.google.zxing.WriterException) Result(com.google.zxing.Result) Bitmap(android.graphics.Bitmap) BinaryBitmap(com.google.zxing.BinaryBitmap) BitmapLuminanceSource(com.uuzuche.lib_zxing.camera.BitmapLuminanceSource) BitmapFactory(android.graphics.BitmapFactory) BinaryBitmap(com.google.zxing.BinaryBitmap) Vector(java.util.Vector)

Example 34 with Result

use of com.google.zxing.Result in project android-zxingLibrary by yipianfengye.

the class DecodeHandler method decode.

/**
     * Decode the data within the viewfinder rectangle, and time how long it took. For efficiency,
     * reuse the same reader objects from one decode to the next.
     *
     * @param data   The YUV preview frame.
     * @param width  The width of the preview frame.
     * @param height The height of the preview frame.
     */
private void decode(byte[] data, int width, int height) {
    long start = System.currentTimeMillis();
    Result rawResult = null;
    //modify here
    byte[] rotatedData = new byte[data.length];
    for (int y = 0; y < height; y++) {
        for (int x = 0; x < width; x++) rotatedData[x * height + height - y - 1] = data[x + y * width];
    }
    // Here we are swapping, that's the difference to #11
    int tmp = width;
    width = height;
    height = tmp;
    PlanarYUVLuminanceSource source = CameraManager.get().buildLuminanceSource(rotatedData, width, height);
    BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
    try {
        rawResult = multiFormatReader.decodeWithState(bitmap);
    } catch (ReaderException re) {
    // continue
    } finally {
        multiFormatReader.reset();
    }
    if (rawResult != null) {
        long end = System.currentTimeMillis();
        Log.d(TAG, "Found barcode (" + (end - start) + " ms):\n" + rawResult.toString());
        Message message = Message.obtain(fragment.getHandler(), R.id.decode_succeeded, rawResult);
        Bundle bundle = new Bundle();
        bundle.putParcelable(DecodeThread.BARCODE_BITMAP, source.renderCroppedGreyscaleBitmap());
        message.setData(bundle);
        //Log.d(TAG, "Sending decode succeeded message...");
        message.sendToTarget();
    } else {
        Message message = Message.obtain(fragment.getHandler(), R.id.decode_failed);
        message.sendToTarget();
    }
}
Also used : Message(android.os.Message) PlanarYUVLuminanceSource(com.uuzuche.lib_zxing.camera.PlanarYUVLuminanceSource) Bundle(android.os.Bundle) BinaryBitmap(com.google.zxing.BinaryBitmap) HybridBinarizer(com.google.zxing.common.HybridBinarizer) Result(com.google.zxing.Result) ReaderException(com.google.zxing.ReaderException)

Example 35 with Result

use of com.google.zxing.Result in project weex-example by KalicyZhou.

the class ByQuadrantReader method decode.

@Override
public Result decode(BinaryBitmap image, Map<DecodeHintType, ?> hints) throws NotFoundException, ChecksumException, FormatException {
    int width = image.getWidth();
    int height = image.getHeight();
    int halfWidth = width / 2;
    int halfHeight = height / 2;
    try {
        // No need to call makeAbsolute as results will be relative to original top left here
        return delegate.decode(image.crop(0, 0, halfWidth, halfHeight), hints);
    } catch (NotFoundException re) {
    // continue
    }
    try {
        Result result = delegate.decode(image.crop(halfWidth, 0, halfWidth, halfHeight), hints);
        makeAbsolute(result.getResultPoints(), halfWidth, 0);
        return result;
    } catch (NotFoundException re) {
    // continue
    }
    try {
        Result result = delegate.decode(image.crop(0, halfHeight, halfWidth, halfHeight), hints);
        makeAbsolute(result.getResultPoints(), 0, halfHeight);
        return result;
    } catch (NotFoundException re) {
    // continue
    }
    try {
        Result result = delegate.decode(image.crop(halfWidth, halfHeight, halfWidth, halfHeight), hints);
        makeAbsolute(result.getResultPoints(), halfWidth, halfHeight);
        return result;
    } catch (NotFoundException re) {
    // continue
    }
    int quarterWidth = halfWidth / 2;
    int quarterHeight = halfHeight / 2;
    BinaryBitmap center = image.crop(quarterWidth, quarterHeight, halfWidth, halfHeight);
    Result result = delegate.decode(center, hints);
    makeAbsolute(result.getResultPoints(), quarterWidth, quarterHeight);
    return result;
}
Also used : NotFoundException(com.google.zxing.NotFoundException) BinaryBitmap(com.google.zxing.BinaryBitmap) ResultPoint(com.google.zxing.ResultPoint) Result(com.google.zxing.Result)

Aggregations

Result (com.google.zxing.Result)117 ResultPoint (com.google.zxing.ResultPoint)43 BinaryBitmap (com.google.zxing.BinaryBitmap)37 ReaderException (com.google.zxing.ReaderException)35 HybridBinarizer (com.google.zxing.common.HybridBinarizer)30 Bundle (android.os.Bundle)19 Message (android.os.Message)17 DecoderResult (com.google.zxing.common.DecoderResult)14 ArrayList (java.util.ArrayList)14 MultiFormatReader (com.google.zxing.MultiFormatReader)11 NotFoundException (com.google.zxing.NotFoundException)11 PlanarYUVLuminanceSource (com.google.zxing.PlanarYUVLuminanceSource)11 Cursor (android.database.Cursor)9 LuminanceSource (com.google.zxing.LuminanceSource)9 BitArray (com.google.zxing.common.BitArray)8 DetectorResult (com.google.zxing.common.DetectorResult)8 BufferedImage (java.awt.image.BufferedImage)8 Test (org.junit.Test)8 Bitmap (android.graphics.Bitmap)7 Handler (android.os.Handler)7