1 /*
2 * Copyright (c) 2007, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 /**
25 * @test
26 * @bug 4413109 4418221 6607198
27 * @run main BitDepth
28 * @summary Checks that the PNG and JPEG writers can handle various
29 * BufferedImage types. An optional list of arguments may be used to
30 * test a different format writer or writers.
31 */
32
33 import java.awt.Color;
34 import java.awt.Graphics2D;
35 import java.awt.image.BufferedImage;
36 import java.io.File;
37 import java.io.IOException;
38 import javax.imageio.ImageIO;
39
40 public class BitDepth {
41
42 public static void main(String[] args) throws IOException {
43 new BitDepth(args);
44 }
45
46 // Check that the PNG writer can write an all-white image correctly
47 private static boolean testPNGByteBinary() throws IOException {
48 int width = 10;
49 int height = 10;
50
51 File f = new File("BlackStripe.png");
52 BufferedImage bi = new BufferedImage(width, height,
53 BufferedImage.TYPE_BYTE_BINARY);
54 Graphics2D g = bi.createGraphics();
55 g.setColor(new Color(255, 255, 255));
56 g.fillRect(0, 0, width, height);
57
58 ImageIO.write(bi, "png", f);
59 BufferedImage bi2 = ImageIO.read(f);
60 if (bi2.getWidth() != width || bi2.getHeight() != height) {
61 System.out.println("Dimensions changed!");
62 return false;
63 }
64
65 for (int y = 0; y < height; y++) {
66 for (int x = 0; x < width; x++) {
67 int rgb = bi2.getRGB(x, y);
68 if (rgb != 0xffffffff) {
69 System.out.println("Found a non-white pixel!");
70 return false;
71 }
72 }
73 }
74
75 f.delete();
76 return true;
77 }
78
79 private static final int[] biRGBTypes = {
80 BufferedImage.TYPE_INT_RGB,
81 BufferedImage.TYPE_INT_BGR,
82 BufferedImage.TYPE_3BYTE_BGR,
83 BufferedImage.TYPE_USHORT_565_RGB,
84 BufferedImage.TYPE_USHORT_555_RGB
85 };
86
87 private static final int[] biRGBATypes = {
88 BufferedImage.TYPE_INT_ARGB,
89 BufferedImage.TYPE_INT_ARGB_PRE,
90 BufferedImage.TYPE_4BYTE_ABGR,
91 BufferedImage.TYPE_4BYTE_ABGR_PRE
92 };
93
94 private static final int[] biGrayTypes = {
95 BufferedImage.TYPE_BYTE_GRAY,
96 BufferedImage.TYPE_USHORT_GRAY,
97 BufferedImage.TYPE_BYTE_BINARY
98 };
99
100 private static final String[] biTypeNames = {
101 "CUSTOM",
102 "INT_RGB",
103 "INT_ARGB",
104 "INT_ARGB_PRE",
105 "INT_BGR",
106 "3BYTE_BGR",
107 "4BYTE_ABGR",
108 "4BYTE_ABGR_PRE",
109 "USHORT_565_RGB",
110 "USHORT_555_RGB",
111 "BYTE_GRAY",
112 "USHORT_GRAY",
113 "BYTE_BINARY",
114 "BYTE_INDEXED"
115 };
116
117 private int width = 80;
118 private int height = 80;
119 private String[] format = { "png", "jpeg", "tif" };
120
121 public BitDepth(String[] args) throws IOException {
122 if (args.length > 0) {
123 format = args;
124 }
125
126 for (int i = 0; i < format.length; i++) {
127 testFormat(format[i]);
128 }
129 }
130
131 private void testFormat(String format) throws IOException {
132 boolean allOK = true;
133
134 for (int i = 0; i < biRGBTypes.length; i++) {
135 int type = biRGBTypes[i];
136 System.out.println("Testing " + format +
137 " writer for type " + biTypeNames[type]);
138 File f = testWriteRGB(format, type);
139 boolean ok = testReadRGB(f);
140 if (ok) {
141 f.delete();
142 }
143 allOK = allOK && ok;
144 }
145
146 if (format.equals("png")) {
147 System.out.println("Testing png writer for black stripe");
148 boolean ok = testPNGByteBinary();
149 allOK = allOK && ok;
150 }
151
152 if (!allOK) {
153 throw new RuntimeException("Test failed");
154 }
155 }
156
157 private File testWriteRGB(String format, int type)
158 throws IOException {
159 BufferedImage bi = new BufferedImage(width, height, type);
160 Graphics2D g = bi.createGraphics();
161
162 Color white = new Color(255, 255, 255);
163 Color red = new Color(255, 0, 0);
164 Color green = new Color(0, 255, 0);
165 Color blue = new Color(0, 0, 255);
166
167 g.setColor(white);
168 g.fillRect(0, 0, width, height);
169 g.setColor(red);
170 g.fillRect(10, 10, 20, 20);
171 g.setColor(green);
172 g.fillRect(30, 30, 20, 20);
173 g.setColor(blue);
174 g.fillRect(50, 50, 20, 20);
175
176 File file = new File("BitDepth_" + biTypeNames[type] + "." + format);
177 try {
178 ImageIO.write(bi, format, file);
179 } catch (RuntimeException re) {
180 System.out.println("Can't write a type "
181 + biTypeNames[type] +
182 " BufferedImage!");
183 }
184
185 return file;
186 }
187
188 private int colorDistance(int color, int r, int g, int b) {
189 int r0 = ((color >> 16) & 0xff) - r;
190 int g0 = ((color >> 8) & 0xff) - g;
191 int b0 = (color & 0xff) - b;
192 return r0*r0 + g0*g0 + b0*b0;
193 }
194
195 private boolean testReadRGB(File file) throws IOException {
196 int[] rgb = new int[3];
197
198 BufferedImage bi = ImageIO.read(file);
199 if (bi == null) {
200 System.out.println("Couldn't read image!");
201 return false;
202 }
203 int r = bi.getRGB(15, 15);
204 if (colorDistance(r, 255, 0, 0) > 20) {
205 System.out.println("Red was distorted!");
206 return false;
207 }
208 int g = bi.getRGB(35, 35);
209 if (colorDistance(g, 0, 255, 0) > 20) {
210 System.out.println("Green was distorted!");
211 return false;
212 }
213 int b = bi.getRGB(55, 55);
214 if (colorDistance(b, 0, 0, 255) > 20) {
215 System.out.println("Blue was distorted!");
216 return false;
217 }
218 int w = bi.getRGB(55, 15);
219 if (colorDistance(w, 255, 255, 255) > 20) {
220 System.out.println("White was distorted!");
221 return false;
222 }
223
224 return true;
225 }
226 }