add zbar qr reader for all qr scans

src/main/java/com/sparrowwallet/sparrow/control/WebcamService.java

@@ -14,6 +14,7 @@ import javafx.concurrent.ScheduledService;
 import javafx.concurrent.Task;
 import javafx.embed.swing.SwingFXUtils;
 import javafx.scene.image.Image;
+import net.sourceforge.zbar.ZBar;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -155,6 +156,13 @@ public class WebcamService extends ScheduledService<Image> {
         LuminanceSource source = new BufferedImageLuminanceSource(bufferedImage);
         BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
 
+        if(ZBar.isEnabled()) {
+            ZBar.Scan scan = ZBar.scan(bufferedImage);
+            if(scan != null) {
+                return new Result(scan.stringData(), scan.rawData(), new ResultPoint[0], BarcodeFormat.QR_CODE);
+            }
+        }
+
         try {
             return qrReader.decode(bitmap, Map.of(DecodeHintType.TRY_HARDER, Boolean.TRUE));
         } catch(ReaderException e) {

src/main/java/net/sourceforge/zbar/Config.java

@@ -0,0 +1,76 @@
+/*------------------------------------------------------------------------
+ *  Config
+ *
+ *  Copyright 2010 (c) Jeff Brown <spadix@users.sourceforge.net>
+ *
+ *  This file is part of the ZBar Bar Code Reader.
+ *
+ *  The ZBar Bar Code Reader is free software; you can redistribute it
+ *  and/or modify it under the terms of the GNU Lesser Public License as
+ *  published by the Free Software Foundation; either version 2.1 of
+ *  the License, or (at your option) any later version.
+ *
+ *  The ZBar Bar Code Reader is distributed in the hope that it will be
+ *  useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ *  of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Lesser Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser Public License
+ *  along with the ZBar Bar Code Reader; if not, write to the Free
+ *  Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ *  Boston, MA  02110-1301  USA
+ *
+ *  http://sourceforge.net/projects/zbar
+ *------------------------------------------------------------------------*/
+
+package net.sourceforge.zbar;
+
+/**
+ * Decoder configuration options.
+ */
+public class Config {
+    /**
+     * Enable symbology/feature.
+     */
+    public static final int ENABLE = 0;
+    /**
+     * Enable check digit when optional.
+     */
+    public static final int ADD_CHECK = 1;
+    /**
+     * Return check digit when present.
+     */
+    public static final int EMIT_CHECK = 2;
+    /**
+     * Enable full ASCII character set.
+     */
+    public static final int ASCII = 3;
+
+    /**
+     * Minimum data length for valid decode.
+     */
+    public static final int MIN_LEN = 0x20;
+    /**
+     * Maximum data length for valid decode.
+     */
+    public static final int MAX_LEN = 0x21;
+
+    /**
+     * Required video consistency frames.
+     */
+    public static final int UNCERTAINTY = 0x40;
+
+    /**
+     * Enable scanner to collect position data.
+     */
+    public static final int POSITION = 0x80;
+
+    /**
+     * Image scanner vertical scan density.
+     */
+    public static final int X_DENSITY = 0x100;
+    /**
+     * Image scanner horizontal scan density.
+     */
+    public static final int Y_DENSITY = 0x101;
+}

src/main/java/net/sourceforge/zbar/Image.java

@@ -0,0 +1,197 @@
+/*------------------------------------------------------------------------
+ *  Image
+ *
+ *  Copyright 2007-2010 (c) Jeff Brown <spadix@users.sourceforge.net>
+ *
+ *  This file is part of the ZBar Bar Code Reader.
+ *
+ *  The ZBar Bar Code Reader is free software; you can redistribute it
+ *  and/or modify it under the terms of the GNU Lesser Public License as
+ *  published by the Free Software Foundation; either version 2.1 of
+ *  the License, or (at your option) any later version.
+ *
+ *  The ZBar Bar Code Reader is distributed in the hope that it will be
+ *  useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ *  of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Lesser Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser Public License
+ *  along with the ZBar Bar Code Reader; if not, write to the Free
+ *  Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ *  Boston, MA  02110-1301  USA
+ *
+ *  http://sourceforge.net/projects/zbar
+ *------------------------------------------------------------------------*/
+
+package net.sourceforge.zbar;
+
+import java.io.Closeable;
+
+/**
+ * stores image data samples along with associated format and size
+ * metadata.
+ */
+public class Image implements Closeable {
+    static {
+        init();
+    }
+
+    /**
+     * C pointer to a zbar_symbol_t.
+     */
+    private long peer;
+    private Object data;
+
+    public Image() {
+        peer = create();
+    }
+
+    public Image(int width, int height) {
+        this();
+        setSize(width, height);
+    }
+
+    public Image(int width, int height, String format) {
+        this();
+        setSize(width, height);
+        setFormat(format);
+    }
+
+    public Image(String format) {
+        this();
+        setFormat(format);
+    }
+
+    Image(long peer) {
+        this.peer = peer;
+    }
+
+    private static native void init();
+
+    /**
+     * Create an associated peer instance.
+     */
+    private native long create();
+
+    public void close() {
+        destroy();
+    }
+
+    /**
+     * Clean up native data associated with an instance.
+     */
+    public synchronized void destroy() {
+        if(peer != 0) {
+            destroy(peer);
+            peer = 0;
+        }
+    }
+
+    /**
+     * Destroy the associated peer instance.
+     */
+    private native void destroy(long peer);
+
+    /**
+     * Image format conversion.
+     *
+     * @returns a @em new image with the sample data from the original
+     * image converted to the requested format fourcc.  the original
+     * image is unaffected.
+     */
+    public Image convert(String format) {
+        long newpeer = convert(peer, format);
+        if(newpeer == 0) {
+            return (null);
+        }
+        return (new Image(newpeer));
+    }
+
+    private native long convert(long peer, String format);
+
+    /**
+     * Retrieve the image format fourcc.
+     */
+    public native String getFormat();
+
+    /**
+     * Specify the fourcc image format code for image sample data.
+     */
+    public native void setFormat(String format);
+
+    /**
+     * Retrieve a "sequence" (page/frame) number associated with this
+     * image.
+     */
+    public native int getSequence();
+
+    /**
+     * Associate a "sequence" (page/frame) number with this image.
+     */
+    public native void setSequence(int seq);
+
+    /**
+     * Retrieve the width of the image.
+     */
+    public native int getWidth();
+
+    /**
+     * Retrieve the height of the image.
+     */
+    public native int getHeight();
+
+    /**
+     * Retrieve the size of the image.
+     */
+    public native int[] getSize();
+
+    /**
+     * Specify the pixel size of the image.
+     */
+    public native void setSize(int[] size);
+
+    /**
+     * Specify the pixel size of the image.
+     */
+    public native void setSize(int width, int height);
+
+    /**
+     * Retrieve the crop region of the image.
+     */
+    public native int[] getCrop();
+
+    /**
+     * Specify the crop region of the image.
+     */
+    public native void setCrop(int[] crop);
+
+    /**
+     * Specify the crop region of the image.
+     */
+    public native void setCrop(int x, int y, int width, int height);
+
+    /**
+     * Retrieve the image sample data.
+     */
+    public native byte[] getData();
+
+    /**
+     * Specify image sample data.
+     */
+    public native void setData(byte[] data);
+
+    /**
+     * Specify image sample data.
+     */
+    public native void setData(int[] data);
+
+    /**
+     * Retrieve the decoded results associated with this image.
+     */
+    public SymbolSet getSymbols() {
+        return (new SymbolSet(getSymbols(peer)));
+    }
+
+    private native long getSymbols(long peer);
+
+}

src/main/java/net/sourceforge/zbar/ImageScanner.java

@@ -0,0 +1,110 @@
+/*------------------------------------------------------------------------
+ *  ImageScanner
+ *
+ *  Copyright 2007-2010 (c) Jeff Brown <spadix@users.sourceforge.net>
+ *
+ *  This file is part of the ZBar Bar Code Reader.
+ *
+ *  The ZBar Bar Code Reader is free software; you can redistribute it
+ *  and/or modify it under the terms of the GNU Lesser Public License as
+ *  published by the Free Software Foundation; either version 2.1 of
+ *  the License, or (at your option) any later version.
+ *
+ *  The ZBar Bar Code Reader is distributed in the hope that it will be
+ *  useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ *  of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Lesser Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser Public License
+ *  along with the ZBar Bar Code Reader; if not, write to the Free
+ *  Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ *  Boston, MA  02110-1301  USA
+ *
+ *  http://sourceforge.net/projects/zbar
+ *------------------------------------------------------------------------*/
+
+package net.sourceforge.zbar;
+
+import java.io.Closeable;
+
+/**
+ * Read barcodes from 2-D images.
+ */
+public class ImageScanner implements Closeable {
+    static {
+        init();
+    }
+
+    /**
+     * C pointer to a zbar_image_scanner_t.
+     */
+    private long peer;
+
+    public ImageScanner() {
+        peer = create();
+    }
+
+    private static native void init();
+
+    /**
+     * Create an associated peer instance.
+     */
+    private native long create();
+
+    public void close() {
+        destroy();
+    }
+
+    /**
+     * Clean up native data associated with an instance.
+     */
+    public synchronized void destroy() {
+        if(peer != 0) {
+            destroy(peer);
+            peer = 0;
+        }
+    }
+
+    /**
+     * Destroy the associated peer instance.
+     */
+    private native void destroy(long peer);
+
+    /**
+     * Set config for indicated symbology (0 for all) to specified value.
+     */
+    public native void setConfig(int symbology, int config, int value) throws IllegalArgumentException;
+
+    /**
+     * Parse configuration string and apply to image scanner.
+     */
+    public native void parseConfig(String config);
+
+    /**
+     * Enable or disable the inter-image result cache (default disabled).
+     * Mostly useful for scanning video frames, the cache filters duplicate
+     * results from consecutive images, while adding some consistency
+     * checking and hysteresis to the results.  Invoking this method also
+     * clears the cache.
+     */
+    public native void enableCache(boolean enable);
+
+    /**
+     * Retrieve decode results for last scanned image.
+     *
+     * @returns the SymbolSet result container
+     */
+    public SymbolSet getResults() {
+        return (new SymbolSet(getResults(peer)));
+    }
+
+    private native long getResults(long peer);
+
+    /**
+     * Scan for symbols in provided Image.
+     * The image format must currently be "Y800" or "GRAY".
+     *
+     * @returns the number of symbols successfully decoded from the image.
+     */
+    public native int scanImage(Image image);
+}

src/main/java/net/sourceforge/zbar/Modifier.java

@@ -0,0 +1,44 @@
+/*------------------------------------------------------------------------
+ *  Modifier
+ *
+ *  Copyright 2010 (c) Jeff Brown <spadix@users.sourceforge.net>
+ *
+ *  This file is part of the ZBar Bar Code Reader.
+ *
+ *  The ZBar Bar Code Reader is free software; you can redistribute it
+ *  and/or modify it under the terms of the GNU Lesser Public License as
+ *  published by the Free Software Foundation; either version 2.1 of
+ *  the License, or (at your option) any later version.
+ *
+ *  The ZBar Bar Code Reader is distributed in the hope that it will be
+ *  useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ *  of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Lesser Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser Public License
+ *  along with the ZBar Bar Code Reader; if not, write to the Free
+ *  Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ *  Boston, MA  02110-1301  USA
+ *
+ *  http://sourceforge.net/projects/zbar
+ *------------------------------------------------------------------------*/
+
+package net.sourceforge.zbar;
+
+/**
+ * Decoder symbology modifiers.
+ */
+public class Modifier {
+    /**
+     * barcode tagged as GS1 (EAN.UCC) reserved
+     * (eg, FNC1 before first data character).
+     * data may be parsed as a sequence of GS1 AIs
+     */
+    public static final int GS1 = 0;
+
+    /**
+     * barcode tagged as AIM reserved
+     * (eg, FNC1 after first character or digit pair)
+     */
+    public static final int AIM = 1;
+}

src/main/java/net/sourceforge/zbar/Orientation.java

@@ -0,0 +1,52 @@
+/*------------------------------------------------------------------------
+ *  Orientation
+ *
+ *  Copyright 2010 (c) Jeff Brown <spadix@users.sourceforge.net>
+ *
+ *  This file is part of the ZBar Bar Code Reader.
+ *
+ *  The ZBar Bar Code Reader is free software; you can redistribute it
+ *  and/or modify it under the terms of the GNU Lesser Public License as
+ *  published by the Free Software Foundation; either version 2.1 of
+ *  the License, or (at your option) any later version.
+ *
+ *  The ZBar Bar Code Reader is distributed in the hope that it will be
+ *  useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ *  of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Lesser Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser Public License
+ *  along with the ZBar Bar Code Reader; if not, write to the Free
+ *  Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ *  Boston, MA  02110-1301  USA
+ *
+ *  http://sourceforge.net/projects/zbar
+ *------------------------------------------------------------------------*/
+
+package net.sourceforge.zbar;
+
+/**
+ * Decoded symbol coarse orientation.
+ */
+public class Orientation {
+    /**
+     * Unable to determine orientation.
+     */
+    public static final int UNKNOWN = -1;
+    /**
+     * Upright, read left to right.
+     */
+    public static final int UP = 0;
+    /**
+     * sideways, read top to bottom
+     */
+    public static final int RIGHT = 1;
+    /**
+     * upside-down, read right to left
+     */
+    public static final int DOWN = 2;
+    /**
+     * sideways, read bottom to top
+     */
+    public static final int LEFT = 3;
+}

src/main/java/net/sourceforge/zbar/Symbol.java

@@ -0,0 +1,265 @@
+/*------------------------------------------------------------------------
+ *  Symbol
+ *
+ *  Copyright 2007-2010 (c) Jeff Brown <spadix@users.sourceforge.net>
+ *
+ *  This file is part of the ZBar Bar Code Reader.
+ *
+ *  The ZBar Bar Code Reader is free software; you can redistribute it
+ *  and/or modify it under the terms of the GNU Lesser Public License as
+ *  published by the Free Software Foundation; either version 2.1 of
+ *  the License, or (at your option) any later version.
+ *
+ *  The ZBar Bar Code Reader is distributed in the hope that it will be
+ *  useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ *  of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Lesser Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser Public License
+ *  along with the ZBar Bar Code Reader; if not, write to the Free
+ *  Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ *  Boston, MA  02110-1301  USA
+ *
+ *  http://sourceforge.net/projects/zbar
+ *------------------------------------------------------------------------*/
+
+package net.sourceforge.zbar;
+
+import java.io.Closeable;
+
+/**
+ * Immutable container for decoded result symbols associated with an image
+ * or a composite symbol.
+ */
+public class Symbol implements Closeable {
+    /**
+     * No symbol decoded.
+     */
+    public static final int NONE = 0;
+    /**
+     * Symbol detected but not decoded.
+     */
+    public static final int PARTIAL = 1;
+
+    /**
+     * EAN-8.
+     */
+    public static final int EAN8 = 8;
+    /**
+     * UPC-E.
+     */
+    public static final int UPCE = 9;
+    /**
+     * ISBN-10 (from EAN-13).
+     */
+    public static final int ISBN10 = 10;
+    /**
+     * UPC-A.
+     */
+    public static final int UPCA = 12;
+    /**
+     * EAN-13.
+     */
+    public static final int EAN13 = 13;
+    /**
+     * ISBN-13 (from EAN-13).
+     */
+    public static final int ISBN13 = 14;
+    /**
+     * Interleaved 2 of 5.
+     */
+    public static final int I25 = 25;
+    /**
+     * DataBar (RSS-14).
+     */
+    public static final int DATABAR = 34;
+    /**
+     * DataBar Expanded.
+     */
+    public static final int DATABAR_EXP = 35;
+    /**
+     * Codabar.
+     */
+    public static final int CODABAR = 38;
+    /**
+     * Code 39.
+     */
+    public static final int CODE39 = 39;
+    /**
+     * PDF417.
+     */
+    public static final int PDF417 = 57;
+    /**
+     * QR Code.
+     */
+    public static final int QRCODE = 64;
+    /**
+     * Code 93.
+     */
+    public static final int CODE93 = 93;
+    /**
+     * Code 128.
+     */
+    public static final int CODE128 = 128;
+
+    static {
+        init();
+    }
+
+    /**
+     * C pointer to a zbar_symbol_t.
+     */
+    private long peer;
+    /**
+     * Cached attributes.
+     */
+    private int type;
+
+    /**
+     * Symbols are only created by other package methods.
+     */
+    Symbol(long peer) {
+        this.peer = peer;
+    }
+
+    private static native void init();
+
+    public void close() {
+        destroy();
+    }
+
+    /**
+     * Clean up native data associated with an instance.
+     */
+    public synchronized void destroy() {
+        if(peer != 0) {
+            destroy(peer);
+            peer = 0;
+        }
+    }
+
+    /**
+     * Release the associated peer instance.
+     */
+    private native void destroy(long peer);
+
+    /**
+     * Retrieve type of decoded symbol.
+     */
+    public int getType() {
+        if(type == 0) {
+            type = getType(peer);
+        }
+        return (type);
+    }
+
+    private native int getType(long peer);
+
+    /**
+     * Retrieve symbology boolean configs settings used during decode.
+     */
+    public native int getConfigMask();
+
+    /**
+     * Retrieve symbology characteristics detected during decode.
+     */
+    public native int getModifierMask();
+
+    /**
+     * Retrieve data decoded from symbol as a String.
+     */
+    public native String getData();
+
+    /**
+     * Retrieve raw data bytes decoded from symbol.
+     */
+    public native byte[] getDataBytes();
+
+    /**
+     * Retrieve a symbol confidence metric.  Quality is an unscaled,
+     * relative quantity: larger values are better than smaller
+     * values, where "large" and "small" are application dependent.
+     */
+    public native int getQuality();
+
+    /**
+     * Retrieve current cache count.  When the cache is enabled for
+     * the image_scanner this provides inter-frame reliability and
+     * redundancy information for video streams.
+     *
+     * @returns < 0 if symbol is still uncertain
+     * @returns 0 if symbol is newly verified
+     * @returns > 0 for duplicate symbols
+     */
+    public native int getCount();
+
+    /**
+     * Retrieve an approximate, axis-aligned bounding box for the
+     * symbol.
+     */
+    public int[] getBounds() {
+        int n = getLocationSize(peer);
+        if(n <= 0) {
+            return (null);
+        }
+
+        int[] bounds = new int[4];
+        int xmin = Integer.MAX_VALUE;
+        int xmax = Integer.MIN_VALUE;
+        int ymin = Integer.MAX_VALUE;
+        int ymax = Integer.MIN_VALUE;
+
+        for(int i = 0; i < n; i++) {
+            int x = getLocationX(peer, i);
+            if(xmin > x) {
+                xmin = x;
+            }
+            if(xmax < x) {
+                xmax = x;
+            }
+
+            int y = getLocationY(peer, i);
+            if(ymin > y) {
+                ymin = y;
+            }
+            if(ymax < y) {
+                ymax = y;
+            }
+        }
+        bounds[0] = xmin;
+        bounds[1] = ymin;
+        bounds[2] = xmax - xmin;
+        bounds[3] = ymax - ymin;
+        return (bounds);
+    }
+
+    private native int getLocationSize(long peer);
+
+    private native int getLocationX(long peer, int idx);
+
+    private native int getLocationY(long peer, int idx);
+
+    public int[] getLocationPoint(int idx) {
+        int[] p = new int[2];
+        p[0] = getLocationX(peer, idx);
+        p[1] = getLocationY(peer, idx);
+        return (p);
+    }
+
+    /**
+     * Retrieve general axis-aligned, orientation of decoded
+     * symbol.
+     */
+    public native int getOrientation();
+
+    /**
+     * Retrieve components of a composite result.
+     */
+    public SymbolSet getComponents() {
+        return (new SymbolSet(getComponents(peer)));
+    }
+
+    private native long getComponents(long peer);
+
+    native long next();
+}

src/main/java/net/sourceforge/zbar/SymbolIterator.java

@@ -0,0 +1,75 @@
+/*------------------------------------------------------------------------
+ *  SymbolIterator
+ *
+ *  Copyright 2007-2010 (c) Jeff Brown <spadix@users.sourceforge.net>
+ *
+ *  This file is part of the ZBar Bar Code Reader.
+ *
+ *  The ZBar Bar Code Reader is free software; you can redistribute it
+ *  and/or modify it under the terms of the GNU Lesser Public License as
+ *  published by the Free Software Foundation; either version 2.1 of
+ *  the License, or (at your option) any later version.
+ *
+ *  The ZBar Bar Code Reader is distributed in the hope that it will be
+ *  useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ *  of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Lesser Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser Public License
+ *  along with the ZBar Bar Code Reader; if not, write to the Free
+ *  Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ *  Boston, MA  02110-1301  USA
+ *
+ *  http://sourceforge.net/projects/zbar
+ *------------------------------------------------------------------------*/
+
+package net.sourceforge.zbar;
+
+/**
+ * Iterator over a SymbolSet.
+ */
+public class SymbolIterator implements java.util.Iterator<Symbol> {
+    /**
+     * Next symbol to be returned by the iterator.
+     */
+    private Symbol current;
+
+    /**
+     * SymbolIterators are only created by internal interface methods.
+     */
+    SymbolIterator(Symbol first) {
+        current = first;
+    }
+
+    /**
+     * Returns true if the iteration has more elements.
+     */
+    public boolean hasNext() {
+        return (current != null);
+    }
+
+    /**
+     * Retrieves the next element in the iteration.
+     */
+    public Symbol next() {
+        if(current == null) {
+            throw (new java.util.NoSuchElementException("access past end of SymbolIterator"));
+        }
+
+        Symbol result = current;
+        long sym = current.next();
+        if(sym != 0) {
+            current = new Symbol(sym);
+        } else {
+            current = null;
+        }
+        return (result);
+    }
+
+    /**
+     * Raises UnsupportedOperationException.
+     */
+    public void remove() {
+        throw (new UnsupportedOperationException("SymbolIterator is immutable"));
+    }
+}

src/main/java/net/sourceforge/zbar/SymbolSet.java

@@ -0,0 +1,93 @@
+/*------------------------------------------------------------------------
+ *  SymbolSet
+ *
+ *  Copyright 2007-2010 (c) Jeff Brown <spadix@users.sourceforge.net>
+ *
+ *  This file is part of the ZBar Bar Code Reader.
+ *
+ *  The ZBar Bar Code Reader is free software; you can redistribute it
+ *  and/or modify it under the terms of the GNU Lesser Public License as
+ *  published by the Free Software Foundation; either version 2.1 of
+ *  the License, or (at your option) any later version.
+ *
+ *  The ZBar Bar Code Reader is distributed in the hope that it will be
+ *  useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ *  of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Lesser Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser Public License
+ *  along with the ZBar Bar Code Reader; if not, write to the Free
+ *  Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ *  Boston, MA  02110-1301  USA
+ *
+ *  http://sourceforge.net/projects/zbar
+ *------------------------------------------------------------------------*/
+
+package net.sourceforge.zbar;
+
+import java.io.Closeable;
+
+/**
+ * Immutable container for decoded result symbols associated with an image
+ * or a composite symbol.
+ */
+public class SymbolSet extends java.util.AbstractCollection<Symbol> implements Closeable {
+    static {
+        init();
+    }
+
+    /**
+     * C pointer to a zbar_symbol_set_t.
+     */
+    private long peer;
+
+    /**
+     * SymbolSets are only created by other package methods.
+     */
+    SymbolSet(long peer) {
+        this.peer = peer;
+    }
+
+    private static native void init();
+
+    public void close() {
+        destroy();
+    }
+
+    /**
+     * Clean up native data associated with an instance.
+     */
+    public synchronized void destroy() {
+        if(peer != 0) {
+            destroy(peer);
+            peer = 0;
+        }
+    }
+
+    /**
+     * Release the associated peer instance.
+     */
+    private native void destroy(long peer);
+
+    /**
+     * Retrieve an iterator over the Symbol elements in this collection.
+     */
+    public java.util.Iterator<Symbol> iterator() {
+        long sym = firstSymbol(peer);
+        if(sym == 0) {
+            return (new SymbolIterator(null));
+        }
+
+        return (new SymbolIterator(new Symbol(sym)));
+    }
+
+    /**
+     * Retrieve the number of elements in the collection.
+     */
+    public native int size();
+
+    /**
+     * Retrieve C pointer to first symbol in the set.
+     */
+    private native long firstSymbol(long peer);
+}

src/main/java/net/sourceforge/zbar/ZBar.java

@@ -0,0 +1,118 @@
+package net.sourceforge.zbar;
+
+import com.sparrowwallet.sparrow.net.NativeUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.awt.*;
+import java.awt.image.BufferedImage;
+import java.awt.image.DataBufferByte;
+import java.util.Iterator;
+
+public class ZBar {
+    private static final Logger log = LoggerFactory.getLogger(ZBar.class);
+
+    private final static boolean enabled;
+
+    static { // static initializer
+        enabled = loadLibrary();
+    }
+
+    public static boolean isEnabled() {
+        return enabled;
+    }
+
+    public static Scan scan(BufferedImage bufferedImage) {
+        BufferedImage grayscale = new BufferedImage(bufferedImage.getWidth(), bufferedImage.getHeight(), BufferedImage.TYPE_BYTE_GRAY);
+        Graphics2D g2d = (Graphics2D)grayscale.getGraphics();
+        g2d.drawImage(bufferedImage, 0, 0, null);
+        g2d.dispose();
+
+        byte[] data = convertToY800(grayscale);
+
+        try(Image image = new Image()) {
+            image.setSize(grayscale.getWidth(), grayscale.getHeight());
+            image.setFormat("Y800");
+            image.setData(data);
+
+            try(ImageScanner scanner = new ImageScanner()) {
+                scanner.setConfig(Symbol.NONE, Config.ENABLE, 0);
+                scanner.setConfig(Symbol.QRCODE, Config.ENABLE, 1);
+                int result = scanner.scanImage(image);
+                if(result != 0) {
+                    try(SymbolSet results = scanner.getResults()) {
+                        Scan scan = null;
+                        for(Iterator<Symbol> iter = results.iterator(); iter.hasNext(); ) {
+                            try(Symbol symbol = iter.next()) {
+                                scan = new Scan(symbol.getDataBytes(), symbol.getData());
+                            }
+                        }
+                        return scan;
+                    }
+                }
+            }
+        }
+
+        return null;
+    }
+
+    private static byte[] convertToY800(BufferedImage image) {
+        // Ensure the image is grayscale
+        if (image.getType() != BufferedImage.TYPE_BYTE_GRAY) {
+            throw new IllegalArgumentException("Input image must be grayscale");
+        }
+
+        // Get the underlying byte array of the image data
+        byte[] imageData = ((DataBufferByte) image.getRaster().getDataBuffer()).getData();
+
+        // Check if the image size is even
+        int width = image.getWidth();
+        int height = image.getHeight();
+        if (width % 2 != 0 || height % 2 != 0) {
+            throw new IllegalArgumentException("Image dimensions must be even");
+        }
+
+        // Prepare the output byte array in Y800 format
+        byte[] outputData = new byte[width * height];
+        int outputIndex = 0;
+
+        // Convert the grayscale image data to Y800 format
+        for (int y = 0; y < height; y++) {
+            for (int x = 0; x < width; x++) {
+                int pixel = imageData[y * width + x] & 0xFF; // Extract the grayscale value
+
+                // Write the grayscale value to the output byte array
+                outputData[outputIndex++] = (byte) pixel;
+            }
+        }
+
+        return outputData;
+    }
+
+    private static boolean loadLibrary() {
+        try {
+            String osName = System.getProperty("os.name");
+            String osArch = System.getProperty("os.arch");
+            if(osName.startsWith("Mac") && osArch.equals("aarch64")) {
+                NativeUtils.loadLibraryFromJar("/native/osx/aarch64/libzbar.dylib");
+            } else if(osName.startsWith("Mac")) {
+                NativeUtils.loadLibraryFromJar("/native/osx/x64/libzbar.dylib");
+            } else if(osName.startsWith("Windows")) {
+                NativeUtils.loadLibraryFromJar("/native/windows/x64/iconv-2.dll");
+                NativeUtils.loadLibraryFromJar("/native/windows/x64/zbar.dll");
+            } else if(osArch.equals("aarch64")) {
+                NativeUtils.loadLibraryFromJar("/native/linux/aarch64/libzbar.so");
+            } else {
+                NativeUtils.loadLibraryFromJar("/native/linux/x64/libzbar.so");
+            }
+
+            return true;
+        } catch(Exception e) {
+            log.warn("Could not load ZBar native libraries, disabling. " + e.getMessage());
+        }
+
+        return false;
+    }
+
+    public record Scan(byte[] rawData, String stringData) {}
+}