| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.commons.imaging.roundtrip; |
| |
| import java.awt.image.BufferedImage; |
| import java.io.File; |
| import java.io.IOException; |
| |
| import org.apache.commons.imaging.util.Debug; |
| import org.apache.commons.io.FileUtils; |
| import org.junit.Assert; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| |
| final class ImageAsserts { |
| |
| private ImageAsserts() { |
| } |
| |
| static void assertEquals(final BufferedImage a, final BufferedImage b) { |
| assertEquals(a, b, 0); |
| } |
| |
| static void assertEquals(final BufferedImage a, final BufferedImage b, final int tolerance) { |
| Assert.assertEquals(a.getWidth(), b.getWidth()); |
| Assert.assertEquals(a.getHeight(), b.getHeight()); |
| |
| for (int x = 0; x < a.getWidth(); x++) { |
| for (int y = 0; y < a.getHeight(); y++) { |
| final int a_argb = a.getRGB(x, y); |
| final int b_argb = b.getRGB(x, y); |
| if (a_argb != b_argb) { |
| if (calculateARGBDistance(a_argb, b_argb) <= tolerance) { |
| continue; // ignore. |
| } |
| } |
| if (a_argb != b_argb) { |
| Debug.debug("width: " + a.getWidth()); |
| Debug.debug("height: " + a.getHeight()); |
| Debug.debug("distance: " + calculateARGBDistance(a_argb, b_argb)); |
| Debug.debug("x: " + x); |
| Debug.debug("y: " + y); |
| Debug.debug("a_argb: " + a_argb + " (0x" + Integer.toHexString(a_argb) + ")"); |
| Debug.debug("b_argb: " + b_argb + " (0x" + Integer.toHexString(b_argb) + ")"); |
| } |
| Assert.assertEquals(a_argb, b_argb); |
| } |
| } |
| } |
| |
| static int calculateARGBDistance(final int a, final int b) { |
| final int aAlpha = 0xff & (a >> 24); |
| final int aRed = 0xff & (a >> 16); |
| final int aGreen = 0xff & (a >> 8); |
| final int aBlue = 0xff & (a >> 0); |
| final int bAlpha = 0xff & (b >> 24); |
| final int bRed = 0xff & (b >> 16); |
| final int bGreen = 0xff & (b >> 8); |
| final int bBlue = 0xff & (b >> 0); |
| final int diff = Math.abs(aAlpha - bAlpha) + Math.abs(aRed - bRed) |
| + Math.abs(aGreen - bGreen) + Math.abs(aBlue - bBlue); |
| return diff; |
| |
| } |
| |
| static void assertEquals(final File a, final File b) throws IOException { |
| assertTrue(a.exists() && a.isFile()); |
| assertTrue(b.exists() && b.isFile()); |
| Assert.assertEquals(a.length(), b.length()); |
| |
| final byte aData[] = FileUtils.readFileToByteArray(a); |
| final byte bData[] = FileUtils.readFileToByteArray(b); |
| |
| for (int i = 0; i < a.length(); i++) { |
| final int aByte = 0xff & aData[i]; |
| final int bByte = 0xff & bData[i]; |
| |
| if (aByte != bByte) { |
| Debug.debug("a: " + a); |
| Debug.debug("b: " + b); |
| Debug.debug("i: " + i); |
| Debug.debug("aByte: " + aByte + " (0x" + Integer.toHexString(aByte) + ")"); |
| Debug.debug("bByte: " + bByte + " (0x" + Integer.toHexString(bByte) + ")"); |
| } |
| Assert.assertEquals(aByte, bByte); |
| } |
| } |
| } |