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 +1,100 @@
+package org.opencv.test.imgcodecs;
+
+import org.opencv.core.Mat;
+import org.opencv.core.MatOfByte;
+import org.opencv.core.MatOfInt;
+import org.opencv.imgproc.Imgproc;
+import org.opencv.imgcodecs.Imgcodecs;
+import org.opencv.imgcodecs.Animation;
+import org.opencv.test.OpenCVTestCase;
+import org.opencv.test.OpenCVTestRunner;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class ImgcodecsTest extends OpenCVTestCase {
+
+    public void testAnimation() {
+        if (!Imgcodecs.haveImageWriter("*.apng")) {
+           return;
+        }
+
+        Mat src = Imgcodecs.imread(OpenCVTestRunner.LENA_PATH, Imgcodecs.IMREAD_REDUCED_COLOR_4);
+        assertFalse(src.empty());
+
+        Mat rgb = new Mat();
+        Imgproc.cvtColor(src, rgb, Imgproc.COLOR_BGR2RGB);
+
+        Animation animation = new Animation();
+        List<Mat> frames = new ArrayList<>();
+        MatOfInt durations = new MatOfInt(100, 100);
+
+        frames.add(src);
+        frames.add(rgb);
+
+        animation.set_frames(frames);
+        animation.set_durations(durations);
+
+        String filename = OpenCVTestRunner.getTempFileName("png");
+        assertTrue(Imgcodecs.imwriteanimation(filename, animation));
+
+        Animation readAnimation = new Animation();
+        assertTrue(Imgcodecs.imreadanimation(filename, readAnimation));
+
+        List<Mat> readFrames = readAnimation.get_frames();
+        assertTrue(readFrames.size() == 2);
+    }
+
+    public void testImdecode() {
+        fail("Not yet implemented");
+    }
+
+    public void testImencodeStringMatListOfByte() {
+        MatOfByte buff = new MatOfByte();
+        assertEquals(0, buff.total());
+        assertTrue( Imgcodecs.imencode(".jpg", gray127, buff) );
+        assertFalse(0 == buff.total());
+    }
+
+    public void testImencodeStringMatListOfByteListOfInteger() {
+        MatOfInt  params40 = new MatOfInt(Imgcodecs.IMWRITE_JPEG_QUALITY, 40);
+        MatOfInt  params90 = new MatOfInt(Imgcodecs.IMWRITE_JPEG_QUALITY, 90);
+        /* or
+        MatOfInt  params = new MatOfInt();
+        params.fromArray(Imgcodecs.IMWRITE_JPEG_QUALITY, 40);
+        */
+        MatOfByte buff40 = new MatOfByte();
+        MatOfByte buff90 = new MatOfByte();
+
+        assertTrue( Imgcodecs.imencode(".jpg", rgbLena, buff40, params40) );
+        assertTrue( Imgcodecs.imencode(".jpg", rgbLena, buff90, params90) );
+
+        assertTrue(buff40.total() > 0);
+        assertTrue(buff40.total() < buff90.total());
+    }
+
+    public void testImreadString() {
+        dst = Imgcodecs.imread(OpenCVTestRunner.LENA_PATH);
+        assertFalse(dst.empty());
+        assertEquals(3, dst.channels());
+        assertTrue(512 == dst.cols());
+        assertTrue(512 == dst.rows());
+    }
+
+    public void testImreadStringInt() {
+        dst = Imgcodecs.imread(OpenCVTestRunner.LENA_PATH, Imgcodecs.IMREAD_GRAYSCALE);
+        assertFalse(dst.empty());
+        assertEquals(1, dst.channels());
+        assertTrue(512 == dst.cols());
+        assertTrue(512 == dst.rows());
+    }
+
+    public void testImwriteStringMat() {
+        fail("Not yet implemented");
+    }
+
+    public void testImwriteStringMatListOfInteger() {
+        fail("Not yet implemented");
+    }
+
+}