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/*
* Copyright (c) 2003, 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 4641872
* @summary Tests writing compression modes of BMP plugin
*/
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import java.awt.image.BufferedImage;
import java.awt.image.ColorModel;
import java.awt.image.Raster;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.Iterator;
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 BMPWriteParamTest {
static final String format = "BMP";
public static void main(String[] args) {
ImageWriter iw = null;
Iterator writers = ImageIO.getImageWritersByFormatName(format);
if (!writers.hasNext()) {
throw new RuntimeException("No available Image writer for "+format);
}
iw = (ImageWriter)writers.next();
try {
BufferedImage img = createTestImage();
BufferedImage bmp_res = getWriteResult(img, "BMP");
BufferedImage png_res = getWriteResult(img, "PNG");
compare(bmp_res, png_res);
} catch (Exception ex) {
ex.printStackTrace();
throw new RuntimeException("Unexpected exception: " + ex);
}
}
private static BufferedImage getWriteResult(BufferedImage img,
String format
) throws IOException {
ImageWriter iw = null;
Iterator writers = ImageIO.getImageWritersByFormatName(format);
while (writers.hasNext()) {
iw = (ImageWriter)writers.next();
System.out.println(format + " -> " + iw.toString());
}
if (iw==null) {
throw new RuntimeException("No available Image writer for "+format);
}
ImageWriteParam param = iw.getDefaultWriteParam();
param.setSourceRegion(new Rectangle(10, 10, 31, 31));
param.setSourceSubsampling(3, 3, 0, 0);
IIOMetadata meta = iw.getDefaultImageMetadata(new ImageTypeSpecifier(img), param);
IIOImage iio_img = new IIOImage(img, null, meta);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ImageOutputStream ios = ImageIO.createImageOutputStream(baos);
iw.setOutput(ios);
iw.write(meta, iio_img, param);
ios.flush();
byte[] ba_image = baos.toByteArray();
ByteArrayInputStream bais = new ByteArrayInputStream(ba_image);
ImageReader ir = null;
Iterator readers = ImageIO.getImageReadersByFormatName(format);
while (readers.hasNext()) {
ir = (ImageReader)readers.next();
System.out.println(format + " -> " + ir.toString());
}
if (ir==null) {
throw new RuntimeException("No available Image reader for "+format);
}
ir.setInput(ImageIO.createImageInputStream(bais));
BufferedImage res = ir.read(0);
return res;
}
private static BufferedImage createTestImage()
throws IOException {
int w = 50;
int h = 50;
BufferedImage b = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
Graphics2D g = b.createGraphics();
g.setColor(Color.red);
g.fillRect(0,0, w, h);
g.setColor(Color.white);
for (int i=10; i<=10+30; i+= 3) {
g.drawLine(i, 10, i, 40);
g.drawLine(10, i, 40, i);
}
return b;
}
private static boolean compare(final BufferedImage in,
final BufferedImage out)
{
final int width = in.getWidth();
int height = in.getHeight();
if (out.getWidth() != width || out.getHeight() != height) {
throw new RuntimeException("Dimensions changed!");
}
Raster oldras = in.getRaster();
ColorModel oldcm = in.getColorModel();
Raster newras = out.getRaster();
ColorModel newcm = out.getColorModel();
for (int j = 0; j < height; j++) {
for (int i = 0; i < width; i++) {
Object oldpixel = oldras.getDataElements(i, j, null);
int oldrgb = oldcm.getRGB(oldpixel);
int oldalpha = oldcm.getAlpha(oldpixel);
Object newpixel = newras.getDataElements(i, j, null);
int newrgb = newcm.getRGB(newpixel);
int newalpha = newcm.getAlpha(newpixel);
if (newrgb != oldrgb ||
newalpha != oldalpha) {
// showDiff(in, out);
throw new RuntimeException("Pixels differ at " + i +
", " + j + " new = " + Integer.toHexString(newrgb) + " old = " + Integer.toHexString(oldrgb));
}
}
}
return true;
}
}
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