Examples with DecodeHintType com.google.zxing.DecodeHintType used on opensource projects

Example 11 with DecodeHintType

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

the class AbstractNegativeBlackBoxTestCase method checkForFalsePositives.

/**
   * Make sure ZXing does NOT find a barcode in the image.
   *
   * @param image The image to test
   * @param rotationInDegrees The amount of rotation to apply
   * @return true if nothing found, false if a non-existent barcode was detected
   */
private boolean checkForFalsePositives(BufferedImage image, float rotationInDegrees) {
    BufferedImage rotatedImage = rotateImage(image, rotationInDegrees);
    LuminanceSource source = new BufferedImageLuminanceSource(rotatedImage);
    BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
    Result result;
    try {
        result = getReader().decode(bitmap);
        log.info(String.format("Found false positive: '%s' with format '%s' (rotation: %d)", result.getText(), result.getBarcodeFormat(), (int) rotationInDegrees));
        return false;
    } catch (ReaderException re) {
    // continue
    }
    // Try "try harder" getMode
    Map<DecodeHintType, Object> hints = new EnumMap<>(DecodeHintType.class);
    hints.put(DecodeHintType.TRY_HARDER, Boolean.TRUE);
    try {
        result = getReader().decode(bitmap, hints);
        log.info(String.format("Try harder found false positive: '%s' with format '%s' (rotation: %d)", result.getText(), result.getBarcodeFormat(), (int) rotationInDegrees));
        return false;
    } catch (ReaderException re) {
    // continue
    }
    return true;
}

Example 12 with DecodeHintType

use of com.google.zxing.DecodeHintType in project zxing-android-embedded by journeyapps.

the class DecoratedBarcodeView method initializeFromIntent.

/**
     * Convenience method to initialize camera id, decode formats and prompt message from an intent.
     *
     * @param intent the intent, as generated by IntentIntegrator
     */
public void initializeFromIntent(Intent intent) {
    // Scan the formats the intent requested, and return the result to the calling activity.
    Set<BarcodeFormat> decodeFormats = DecodeFormatManager.parseDecodeFormats(intent);
    Map<DecodeHintType, Object> decodeHints = DecodeHintManager.parseDecodeHints(intent);
    CameraSettings settings = new CameraSettings();
    if (intent.hasExtra(Intents.Scan.CAMERA_ID)) {
        int cameraId = intent.getIntExtra(Intents.Scan.CAMERA_ID, -1);
        if (cameraId >= 0) {
            settings.setRequestedCameraId(cameraId);
        }
    }
    String customPromptMessage = intent.getStringExtra(Intents.Scan.PROMPT_MESSAGE);
    if (customPromptMessage != null) {
        setStatusText(customPromptMessage);
    }
    // Check to see if the scan should be inverted.
    boolean inverted = intent.getBooleanExtra(Intents.Scan.INVERTED_SCAN, false);
    String characterSet = intent.getStringExtra(Intents.Scan.CHARACTER_SET);
    MultiFormatReader reader = new MultiFormatReader();
    reader.setHints(decodeHints);
    barcodeView.setCameraSettings(settings);
    barcodeView.setDecoderFactory(new DefaultDecoderFactory(decodeFormats, decodeHints, characterSet, inverted));
}

Example 13 with DecodeHintType

use of com.google.zxing.DecodeHintType in project zxing-android-embedded by journeyapps.

the class DefaultDecoderFactory method createDecoder.

@Override
public Decoder createDecoder(Map<DecodeHintType, ?> baseHints) {
    Map<DecodeHintType, Object> hints = new EnumMap<>(DecodeHintType.class);
    hints.putAll(baseHints);
    if (this.hints != null) {
        hints.putAll(this.hints);
    }
    if (this.decodeFormats != null) {
        hints.put(DecodeHintType.POSSIBLE_FORMATS, decodeFormats);
    }
    if (characterSet != null) {
        hints.put(DecodeHintType.CHARACTER_SET, characterSet);
    }
    MultiFormatReader reader = new MultiFormatReader();
    reader.setHints(hints);
    return inverted ? new InvertedDecoder(reader) : new Decoder(reader);
}

Example 14 with DecodeHintType

use of com.google.zxing.DecodeHintType in project zxing-android-embedded by journeyapps.

the class DecodeHintManager method parseDecodeHints.

public static Map<DecodeHintType, Object> parseDecodeHints(Intent intent) {
    Bundle extras = intent.getExtras();
    if (extras == null || extras.isEmpty()) {
        return null;
    }
    Map<DecodeHintType, Object> hints = new EnumMap<>(DecodeHintType.class);
    for (DecodeHintType hintType : DecodeHintType.values()) {
        if (hintType == DecodeHintType.CHARACTER_SET || hintType == DecodeHintType.NEED_RESULT_POINT_CALLBACK || hintType == DecodeHintType.POSSIBLE_FORMATS) {
            // This hint is specified in another way
            continue;
        }
        String hintName = hintType.name();
        if (extras.containsKey(hintName)) {
            if (hintType.getValueType().equals(Void.class)) {
                // Void hints are just flags: use the constant specified by the DecodeHintType
                hints.put(hintType, Boolean.TRUE);
            } else {
                Object hintData = extras.get(hintName);
                if (hintType.getValueType().isInstance(hintData)) {
                    hints.put(hintType, hintData);
                } else {
                    Log.w(TAG, "Ignoring hint " + hintType + " because it is not assignable from " + hintData);
                }
            }
        }
    }
    Log.i(TAG, "Hints from the Intent: " + hints);
    return hints;
}

Example 15 with DecodeHintType

use of com.google.zxing.DecodeHintType in project react-native-camera by lwansbrough.

the class RCTCameraViewFinder method initBarcodeReader.

/**
     * Initialize the barcode decoder.
     */
private void initBarcodeReader(List<String> barCodeTypes) {
    EnumMap<DecodeHintType, Object> hints = new EnumMap<>(DecodeHintType.class);
    EnumSet<BarcodeFormat> decodeFormats = EnumSet.noneOf(BarcodeFormat.class);
    if (barCodeTypes != null) {
        for (String code : barCodeTypes) {
            BarcodeFormat format = parseBarCodeString(code);
            if (format != null) {
                decodeFormats.add(format);
            }
        }
    }
    hints.put(DecodeHintType.POSSIBLE_FORMATS, decodeFormats);
    _multiFormatReader.setHints(hints);
}