chore: import upstream snapshot with attribution

2026-07-13 12:06:04 +08:00
commit 86c9b1c39f
7743 changed files with 3316339 additions and 0 deletions
@@ -0,0 +1,81 @@
+package org.opencv.test.objdetect;
+
+import java.util.List;
+import org.opencv.core.Mat;
+import org.opencv.core.Size;
+import org.opencv.objdetect.QRCodeDetector;
+import org.opencv.objdetect.QRCodeEncoder;
+import org.opencv.objdetect.QRCodeEncoder_Params;
+import org.opencv.imgcodecs.Imgcodecs;
+import org.opencv.imgproc.Imgproc;
+import org.opencv.test.OpenCVTestCase;
+import java.util.Arrays;
+import java.util.ArrayList;
+import java.util.HashSet;
+import java.util.List;
+import java.io.UnsupportedEncodingException;
+import java.nio.charset.Charset;
+
+public class QRCodeDetectorTest extends OpenCVTestCase {
+
+    private final static String ENV_OPENCV_TEST_DATA_PATH = "OPENCV_TEST_DATA_PATH";
+    private String testDataPath;
+
+    @Override
+    protected void setUp() throws Exception {
+        super.setUp();
+
+        // relys on https://developer.android.com/reference/java/lang/System
+        isTestCaseEnabled = System.getProperties().getProperty("java.vm.name") != "Dalvik";
+
+        if (isTestCaseEnabled) {
+            testDataPath = System.getenv(ENV_OPENCV_TEST_DATA_PATH);
+            if (testDataPath == null)
+                throw new Exception(ENV_OPENCV_TEST_DATA_PATH + " has to be defined!");
+        }
+    }
+
+    public void testDetectAndDecode() {
+        Mat img = Imgcodecs.imread(testDataPath + "/cv/qrcode/link_ocv.jpg");
+        assertFalse(img.empty());
+        QRCodeDetector detector = new QRCodeDetector();
+        assertNotNull(detector);
+        String output = detector.detectAndDecode(img);
+        assertEquals(output, "https://opencv.org/");
+    }
+
+    public void testDetectAndDecodeMulti() {
+        Mat img = Imgcodecs.imread(testDataPath + "/cv/qrcode/multiple/6_qrcodes.png");
+        assertFalse(img.empty());
+        QRCodeDetector detector = new QRCodeDetector();
+        assertNotNull(detector);
+        List < String > output = new ArrayList< String >();
+        boolean result = detector.detectAndDecodeMulti(img, output);
+        assertTrue(result);
+        assertEquals(output.size(), 6);
+        List < String > expectedResults = Arrays.asList("SKIP", "EXTRA", "TWO STEPS FORWARD", "STEP BACK", "QUESTION", "STEP FORWARD");
+        assertEquals(new HashSet<String>(output), new HashSet<String>(expectedResults));
+    }
+
+    public void testKanji() {
+        byte[] inp = new byte[]{(byte)0x82, (byte)0xb1, (byte)0x82, (byte)0xf1, (byte)0x82, (byte)0xc9, (byte)0x82,
+                                (byte)0xbf, (byte)0x82, (byte)0xcd, (byte)0x90, (byte)0xa2, (byte)0x8a, (byte)0x45};
+        QRCodeEncoder_Params params = new QRCodeEncoder_Params();
+        params.set_mode(QRCodeEncoder.MODE_KANJI);
+        QRCodeEncoder encoder = QRCodeEncoder.create(params);
+
+        Mat qrcode = new Mat();
+        encoder.encode(inp, qrcode);
+        Imgproc.resize(qrcode, qrcode, new Size(0, 0), 2, 2, Imgproc.INTER_NEAREST);
+
+        QRCodeDetector detector = new QRCodeDetector();
+        byte[] output = detector.detectAndDecodeBytes(qrcode);
+        assertEquals(detector.getEncoding(), QRCodeEncoder.ECI_SHIFT_JIS);
+        assertArrayEquals(inp, output);
+
+        List < byte[] > outputs = new ArrayList< byte[] >();
+        assertTrue(detector.detectAndDecodeBytesMulti(qrcode, outputs));
+        assertEquals(detector.getEncoding(0), QRCodeEncoder.ECI_SHIFT_JIS);
+        assertArrayEquals(inp, outputs.get(0));
+    }
+}