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/*
* Copyright (c) 2005, 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 4339415
* @summary Tests that GIF writer plugin writes image sequences correctly
*/
import java.awt.Color;
import java.awt.Graphics;
import java.awt.image.BufferedImage;
import java.awt.image.IndexColorModel;
import java.io.File;
import java.io.IOException;
import javax.imageio.IIOImage;
import javax.imageio.ImageIO;
import javax.imageio.ImageReader;
import javax.imageio.ImageTypeSpecifier;
import javax.imageio.ImageWriteParam;
import javax.imageio.ImageWriter;
import javax.imageio.metadata.IIOMetadata;
import javax.imageio.stream.ImageOutputStream;
public class AnimationTest {
BufferedImage img = null;
int x, y;
int w, h;
protected static String fname = "animtest.gif";
public AnimationTest() {
w = h = 100;
}
private void initFrame() {
if (img != null) {
return;
}
byte r[] = new byte[256];
byte g[] = new byte[256];
byte b[] = new byte[256];
for (int i = 0; i < 256; i++) {
r[i] = g[i] = b[i] = (byte)0x00;
}
r[0] = (byte)0x00; g[0] = (byte)0x00; b[0] = (byte)0x00;
r[1] = (byte)0xFF; g[1] = (byte)0xFF; b[1] = (byte)0xFF;
r[2] = (byte)0xFF; g[3] = (byte)0xFF; b[4] = (byte)0xFF;
IndexColorModel icm = new IndexColorModel(8, 256,
r, g, b);
img = new BufferedImage(w, h,
BufferedImage.TYPE_BYTE_INDEXED,
icm);
}
private BufferedImage createNextFrame() {
Graphics g = img.createGraphics();
g.setColor(Color.white);
g.fillRect(0, 0, w, h);
g.setColor(Color.red);
g.drawLine(x, 0, x, h);
g.setColor(Color.blue);
g.drawLine(0, y, w, y);
x += 2;
y += 2;
x %= w;
y %= h;
return img;
}
ImageWriter writer = null;
private ImageWriter initWriter() throws IOException {
ImageOutputStream ios =
ImageIO.createImageOutputStream(new File(fname));
writer = ImageIO.getImageWritersByFormatName("GIF").next();
writer.setOutput(ios);
return writer;
}
public static void main(String[] args) {
try {
AnimationTest t = new AnimationTest();
t.initFrame();
ImageWriter w = t.initWriter();
ImageWriteParam p = w.getDefaultWriteParam();
IIOMetadata streamMetadata = w.getDefaultStreamMetadata(p);
w.prepareWriteSequence(streamMetadata);
for (int i = 0; i < 50; i++) {
BufferedImage f = t.createNextFrame();
ImageTypeSpecifier type = new ImageTypeSpecifier(f);
IIOMetadata m = w.getDefaultImageMetadata(type, p);
w.writeToSequence(new IIOImage(f, null, m), p);
}
w.endWriteSequence();
t.checkAnimation();
} catch (Exception e) {
throw new RuntimeException("Test failed.", e);
}
}
protected void checkAnimation() throws IOException {
ImageReader r = ImageIO.getImageReadersByFormatName("GIF").next();
r.setInput(ImageIO.createImageInputStream(new File(fname)));
int n = r.getNumImages(true);
for (int i = 0; i < n; i++) {
BufferedImage f = r.read(i);
checkFrame(i, f);
}
System.out.println("Test passed.");
}
protected void checkFrame(int i, BufferedImage f) {
int x = 2 * i + 1;
for (int y = 0; y < h; y++) {
int argb = f.getRGB(x, y);
if (argb != 0xffffffff && !(argb == 0xff0000ff && y == 2 * i)) {
throw new RuntimeException("Test failed - bad frame");
}
argb = f.getRGB(y, x);
if (argb != 0xffffffff && !(argb == 0xffff0000 && y == 2 * i)) {
throw new RuntimeException("Test failed - bad frame");
}
}
}
}
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