| /* |
| * Copyright (c) 2017, 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. |
| */ |
| |
| /* |
| * @test |
| * @bug 8177393 |
| * @summary Verify RescaleOp applied to BufferedImages. |
| * @run main ImageRescaleOpTest |
| */ |
| |
| import java.awt.Graphics2D; |
| import java.awt.image.BufferedImage; |
| import static java.awt.image.BufferedImage.*; |
| import java.awt.image.RescaleOp; |
| import java.awt.Color; |
| import java.io.File; |
| import java.io.IOException; |
| import javax.imageio.ImageIO; |
| |
| public class ImageRescaleOpTest { |
| |
| int w = 10, h = 10; |
| float scaleFactor = 0.5f; |
| float offset = 0.0f; |
| static boolean saveImage = false; |
| |
| public static void main(String[] args) throws Exception { |
| saveImage = args.length > 0; |
| ImageRescaleOpTest test = new ImageRescaleOpTest(); |
| test.startTest(); |
| } |
| |
| String getFileName(int s, int d) { |
| return textFor(s)+"_to_"+textFor(d)+".png"; |
| } |
| |
| String getMsgText(int s, int d) { |
| return textFor(s)+"->"+textFor(d)+": "; |
| } |
| |
| String textFor(int t) { |
| switch (t) { |
| case TYPE_INT_ARGB : return "ARGB"; |
| case TYPE_INT_RGB : return "RGB"; |
| case TYPE_4BYTE_ABGR : return "4BYTEABGR"; |
| case TYPE_3BYTE_BGR : return "3BYTEBGR"; |
| case TYPE_USHORT_555_RGB : return "USHORT_555_RGB"; |
| case TYPE_USHORT_565_RGB : return "USHORT_565_RGB"; |
| case TYPE_USHORT_GRAY : return "USHORT_GRAY"; |
| default : return "OTHER"; |
| } |
| } |
| |
| private void startTest() throws Exception { |
| |
| int expect = 0xff7f7f7f; |
| runTest(TYPE_INT_RGB, TYPE_INT_RGB, expect); |
| runTest(TYPE_INT_ARGB, TYPE_INT_ARGB, expect); |
| runTest(TYPE_INT_ARGB, TYPE_INT_RGB, expect); |
| runTest(TYPE_INT_RGB, TYPE_INT_ARGB, expect); |
| |
| runTest(TYPE_3BYTE_BGR, TYPE_3BYTE_BGR, expect); |
| runTest(TYPE_3BYTE_BGR, TYPE_4BYTE_ABGR, expect); |
| runTest(TYPE_4BYTE_ABGR, TYPE_3BYTE_BGR, expect); |
| runTest(TYPE_4BYTE_ABGR, TYPE_4BYTE_ABGR, expect); |
| |
| /* Slightly different values here due to limited precision */ |
| runTest(TYPE_USHORT_555_RGB, TYPE_USHORT_555_RGB, 0xff7b7b7b); |
| runTest(TYPE_USHORT_565_RGB, TYPE_USHORT_565_RGB, 0xff7b7d7b); |
| |
| /* 565->555 and 555->565 results are wrong as the slow code |
| * path used is not accounting for the difference in the range. |
| */ |
| //runTest(TYPE_USHORT_555_RGB, TYPE_USHORT_565_RGB, expect); |
| //runTest(TYPE_USHORT_565_RGB, TYPE_USHORT_555_RGB, expect); |
| |
| runTest(TYPE_USHORT_GRAY, TYPE_USHORT_GRAY, 0xffbcbcbc); |
| |
| } |
| |
| private void check(BufferedImage bi, int expect, String msg) { |
| int argb = bi.getRGB(w-1, h-1); |
| System.out.println(msg + Integer.toHexString(argb)); |
| if (argb != expect) { |
| throw new RuntimeException(msg + |
| " expected " + Integer.toHexString(expect) + |
| " but got " + Integer.toHexString(argb)); |
| } |
| } |
| |
| private void runTest(int sType, int dType, int expect) { |
| |
| BufferedImage src = new BufferedImage(w, h, sType); |
| BufferedImage dst = new BufferedImage(w, h, dType); |
| String msg = getMsgText(sType, dType); |
| |
| Graphics2D g2d = src.createGraphics(); |
| g2d.setColor(Color.WHITE); |
| g2d.fillRect(0, 0, w, h); |
| RescaleOp res = new RescaleOp(scaleFactor, offset, null); |
| res.filter(src, dst); |
| if (saveImage) { |
| try { |
| String fname = getFileName(sType, dType); |
| ImageIO.write(dst, "png", new File(fname)); |
| } catch (IOException e) { |
| } |
| } |
| check(dst, expect, msg); |
| } |
| } |