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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 4893446
* @summary Tests that we get IOException if we try to encode the incompatible
* image with RLE compression
*/
import java.awt.Color;
import java.awt.Graphics;
import java.awt.image.BufferedImage;
import java.awt.image.IndexColorModel;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import javax.imageio.IIOImage;
import javax.imageio.ImageIO;
import javax.imageio.ImageWriteParam;
import javax.imageio.ImageWriter;
import javax.imageio.stream.ImageInputStream;
import javax.imageio.stream.ImageOutputStream;
public class RleEncodingTest {
private static int testIdx = 1;
public static void main(String args[]) throws Exception {
try {
int mode = ImageWriteParam.MODE_EXPLICIT;
String type = "BI_RLE4";
doTest(type, mode);
type = "BI_RLE8";
doTest(type, mode);
mode = ImageWriteParam.MODE_DEFAULT;
type = "BI_RLE4";
doTest(type, mode);
type = "BI_RLE8";
doTest(type, mode);
System.out.println("Test 4bpp image.");
encodeRLE4Test();
System.out.println("Test 8bpp image.");
encodeRLE8Test();
} catch (IOException e) {
e.printStackTrace();
throw new RuntimeException("Unexpected exception. Test failed");
}
}
private static void doTest(String compressionType,
int compressionMode) throws IOException
{
BufferedImage bimg = new BufferedImage(100, 100,
BufferedImage.TYPE_INT_RGB);
Graphics g = bimg.getGraphics();
g.setColor(Color.green);
g.fillRect(0, 0, 100, 100);
doTest(bimg, compressionType, compressionMode);
}
private static void encodeRLE4Test() throws IOException {
// create 4bpp image
byte[] r = new byte[16];
r[0] = (byte)0xff;
byte[] g = new byte[16];
g[1] = (byte)0xff;
byte[] b = new byte[16];
b[2] = (byte)0xff;
IndexColorModel icm = new IndexColorModel(4, 16, r, g, b);
BufferedImage bimg = new BufferedImage(100, 100,
BufferedImage.TYPE_BYTE_BINARY,
icm);
Graphics gr = bimg.getGraphics();
gr.setColor(Color.green);
gr.fillRect(0, 0, 100, 100);
doTest(bimg, "BI_RLE4", ImageWriteParam.MODE_EXPLICIT);
}
private static void encodeRLE8Test() throws IOException {
// create 8bpp image
byte[] r = new byte[256];
r[0] = (byte)0xff;
byte[] g = new byte[256];
g[1] = (byte)0xff;
byte[] b = new byte[256];
b[2] = (byte)0xff;
IndexColorModel icm = new IndexColorModel(8, 256, r, g, b);
BufferedImage bimg = new BufferedImage(100, 100,
BufferedImage.TYPE_BYTE_INDEXED,
icm);
Graphics gr = bimg.getGraphics();
gr.setColor(Color.green);
gr.fillRect(0, 0, 100, 100);
doTest(bimg, "BI_RLE8", ImageWriteParam.MODE_EXPLICIT);
}
private static void doTest(BufferedImage src,
String compressionType,
int compressionMode) throws IOException
{
ImageWriter iw = (ImageWriter)ImageIO.getImageWritersBySuffix("bmp").next();
if (iw == null) {
throw new RuntimeException("No available writer. Test failed.");
}
IIOImage iioImg = new IIOImage(src, null, null);
ImageWriteParam param = iw.getDefaultWriteParam();
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ImageOutputStream ios = ImageIO.createImageOutputStream(baos);
iw.setOutput(ios);
System.out.println("Compression Type is " + compressionType);
System.out.println("Compression Mode is " + compressionMode);
param.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
param.setCompressionType(compressionType);
if (compressionMode != ImageWriteParam.MODE_EXPLICIT) {
param.setCompressionMode(compressionMode);
}
try {
iw.write(null, iioImg, param);
} catch (IOException e) {
int bpp = src.getColorModel().getPixelSize();
if (compressionMode == ImageWriteParam.MODE_EXPLICIT) {
if ((compressionType.equals("BI_RLE4") && bpp != 4)
|| (compressionType.equals("BI_RLE8") && bpp != 8))
{
System.out.println("Can not encode "+ bpp+ "bpp image as"
+ compressionType);
return;
} else {
throw new RuntimeException("Unable to encode "
+ bpp + "bpp image as "
+ compressionType
+ ". Test failed");
}
}
}
baos.close();
ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
ImageInputStream iis = ImageIO.createImageInputStream(bais);
BufferedImage dst = ImageIO.read(iis);
int w = src.getWidth();
int h = src.getHeight();
Object dstPixel = dst.getRaster().getDataElements(w/2, h/2, null);
Object srcPixel = src.getRaster().getDataElements(w/2, h/2, null);
if ( (src.getColorModel().getRed(srcPixel)
!= dst.getColorModel().getRed(dstPixel))
|| (src.getColorModel().getGreen(srcPixel)
!= dst.getColorModel().getGreen(dstPixel))
|| (src.getColorModel().getBlue(srcPixel)
!= dst.getColorModel().getBlue(dstPixel))
|| (src.getColorModel().getAlpha(srcPixel)
!= dst.getColorModel().getAlpha(dstPixel)) ) {
showPixel(src, w/2, h/2);
showPixel(dst, w/2, h/2);
throw new RuntimeException(
"Colors are different: " +
Integer.toHexString(src.getColorModel().getRGB(srcPixel))
+ " and " +
Integer.toHexString(dst.getColorModel().getRGB(dstPixel)));
}
}
private static void showPixel(BufferedImage src, int x, int y) {
System.out.println("Img is " + src);
Object p = src.getRaster().getDataElements(x, y, null);
System.out.println("RGB: " +
Integer.toHexString(src.getColorModel().getRGB(p)));
System.out.println("Red: " +
Integer.toHexString(src.getColorModel().getRed(p)));
System.out.println("Green: " +
Integer.toHexString(src.getColorModel().getGreen(p)));
System.out.println("Blue: " +
Integer.toHexString(src.getColorModel().getBlue(p)));
System.out.println("Alpha: " +
Integer.toHexString(src.getColorModel().getAlpha(p)));
}
}
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