8316497 : ColorConvertOp - typo for non-ICC conversions needs one-line fix

src/java.desktop/share/classes/java/awt/image/ColorConvertOp.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2023, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2024, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -768,7 +768,7 @@ private BufferedImage nonICCBIFilter(BufferedImage src,
             }
             float[] srcMinVal = new float[iccSrcNumComp];
             float[] srcInvDiffMinMax = new float[iccSrcNumComp];
-            for (int i = 0; i < srcNumComp; i++) {
+            for (int i = 0; i < iccSrcNumComp; i++) {
                 srcMinVal[i] = cs.getMinValue(i);
                 srcInvDiffMinMax[i] = maxNum / (cs.getMaxValue(i) - srcMinVal[i]);
             }
@@ -782,7 +782,7 @@ private BufferedImage nonICCBIFilter(BufferedImage src,
             }
             float[] dstMinVal = new float[iccDstNumComp];
             float[] dstDiffMinMax = new float[iccDstNumComp];
-            for (int i = 0; i < dstNumComp; i++) {
+            for (int i = 0; i < iccDstNumComp; i++) {
                 dstMinVal[i] = cs.getMinValue(i);
                 dstDiffMinMax[i] = (cs.getMaxValue(i) - dstMinVal[i]) / maxNum;
             }
@@ -835,7 +835,7 @@ private BufferedImage nonICCBIFilter(BufferedImage src,
                                       dstDiffMinMax[i] + dstMinVal[i];
                     }
                     if (nonICCDst) {
-                        color = srcColorSpace.fromCIEXYZ(dstColor);
+                        color = dstColorSpace.fromCIEXYZ(dstColor);
                         for (int i = 0; i < dstNumComp; i++) {
                             dstColor[i] = color[i];
                         }

test/jdk/java/awt/color/NonICCFilterTest.java

@@ -0,0 +1,151 @@
+/*
+ * Copyright (c) 2024, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code 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 General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+import java.awt.Color;
+import java.awt.GradientPaint;
+import java.awt.Graphics2D;
+import java.awt.Transparency;
+import java.awt.color.ColorSpace;
+import java.awt.image.BufferedImage;
+import java.awt.image.ColorConvertOp;
+import java.awt.image.ComponentColorModel;
+import java.awt.image.DataBuffer;
+import java.awt.image.WritableRaster;
+
+/*
+ * @test
+ * @bug 8316497
+ * @summary Verifies Color filter on non-ICC profile
+ */
+public final class NonICCFilterTest {
+    private static final int WIDTH = 100;
+    private static final int HEIGHT = 100;
+
+    private enum ColorSpaceSelector {
+        GRAY,
+        RGB,
+        PYCC,
+        WRAPPED_GRAY,
+        WRAPPED_RGB,
+        WRAPPED_PYCC
+    }
+
+    private static final class TestColorSpace extends ColorSpace {
+
+        private final ColorSpace cs;
+
+        TestColorSpace(ColorSpace cs) {
+            super(cs.getType(), cs.getNumComponents());
+            this.cs = cs;
+        }
+
+        @Override
+        public float[] toRGB(float[] colorvalue) {
+            return cs.toRGB(colorvalue);
+        }
+
+        @Override
+        public float[] fromRGB(float[] rgbvalue) {
+            return cs.fromRGB(rgbvalue);
+        }
+
+        @Override
+        public float[] toCIEXYZ(float[] colorvalue) {
+            return cs.toCIEXYZ(colorvalue);
+        }
+
+        @Override
+        public float[] fromCIEXYZ(float[] xyzvalue) {
+            return cs.fromCIEXYZ(xyzvalue);
+        }
+    }
+
+    private static BufferedImage createTestImage(final ColorSpace cs) {
+        ComponentColorModel cm = new ComponentColorModel(cs, false, false,
+                Transparency.OPAQUE, DataBuffer.TYPE_BYTE);
+        WritableRaster raster = cm.createCompatibleWritableRaster(WIDTH, HEIGHT);
+        BufferedImage img = new BufferedImage(cm, raster, false, null);
+
+        Graphics2D g = img.createGraphics();
+        GradientPaint gp = new GradientPaint(0, 0, Color.GREEN,
+                raster.getWidth(), raster.getHeight(), Color.BLUE);
+        g.setPaint(gp);
+        g.fillRect(0, 0, raster.getWidth(), raster.getHeight());
+        g.dispose();
+
+        return img;
+    }
+
+    private static ColorSpace createCS(ColorSpaceSelector selector) {
+        return switch (selector) {
+            case GRAY -> ColorSpace.getInstance(ColorSpace.CS_GRAY);
+            case WRAPPED_GRAY -> new TestColorSpace(ColorSpace.getInstance(ColorSpace.CS_GRAY));
+
+            case RGB -> ColorSpace.getInstance(ColorSpace.CS_sRGB);
+            case WRAPPED_RGB -> new TestColorSpace(ColorSpace.getInstance(ColorSpace.CS_sRGB));
+
+            case PYCC -> ColorSpace.getInstance(ColorSpace.CS_PYCC);
+            case WRAPPED_PYCC -> new TestColorSpace(ColorSpace.getInstance(ColorSpace.CS_PYCC));
+        };
+    }
+
+    private static boolean areImagesEqual(BufferedImage destTest, BufferedImage destGold) {
+        for (int x = 0; x < destTest.getWidth(); x++) {
+            for (int y = 0; y < destTest.getHeight(); y++) {
+                int rgb1 = destTest.getRGB(x, y);
+                int rgb2 = destGold.getRGB(x, y);
+                if (rgb1 != rgb2) {
+                    System.err.println("x = " + x + ", y = " + y);
+                    System.err.println("rgb1 = " + Integer.toHexString(rgb1));
+                    System.err.println("rgb2 = " + Integer.toHexString(rgb2));
+                    return false;
+                }
+            }
+        }
+        return true;
+    }
+
+    public static void main(String[] args) {
+        BufferedImage srcTest = createTestImage(createCS(ColorSpaceSelector.WRAPPED_GRAY));
+        BufferedImage destTest = createTestImage(createCS(ColorSpaceSelector.WRAPPED_RGB));
+
+        BufferedImage srcGold = createTestImage(createCS(ColorSpaceSelector.GRAY));
+        BufferedImage destGold = createTestImage(createCS(ColorSpaceSelector.RGB));
+
+        ColorConvertOp gold = new ColorConvertOp(createCS(ColorSpaceSelector.PYCC), null);
+        gold.filter(srcTest, destTest);
+        gold.filter(srcGold, destGold);
+
+        if (!areImagesEqual(destTest, destGold)) {
+            throw new RuntimeException("ICC test failed");
+        }
+
+        ColorConvertOp test = new ColorConvertOp(createCS(ColorSpaceSelector.WRAPPED_PYCC), null);
+        test.filter(srcTest, destTest);
+        test.filter(srcGold, destGold);
+
+        if (!areImagesEqual(destTest, destGold)) {
+            throw new RuntimeException("Wrapper test failed");
+        }
+    }
+}