/*
* Copyright ( c ) 2001 , 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 .
*
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*/
/*
* @ test
* @ bug 4450319
* @ summary Checks that ImageReader . readAll ( int , ImageReadParam ) makes use of
* the ImageReadParam object
*/
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.util.Iterator;
import java.util.Objects;
import java.util.Vector;
import javax.imageio.IIOImage;
import javax.imageio.ImageReadParam;
import javax.imageio.ImageReader;
import javax.imageio.ImageTypeSpecifier;
import javax.imageio.metadata.IIOMetadata;
import javax.imageio.spi.ImageReaderSpi;
import javax.imageio.stream.MemoryCacheImageInputStream;
public class ImageReaderReadAll {
private final static byte [] ba = {};
public static void main(String argv[]) {
ImageReader ireader;
ImageReadParam irp;
IIOImage image;
BufferedImage bi;
BufferedImage bi_1;
BufferedImage bi_2;
ireader = new DummyImageReaderImpl(null );
MemoryCacheImageInputStream mciis = new MemoryCacheImageInputStream
(new ByteArrayInputStream(ba));
ireader.setInput(mciis);
irp = new ImageReadParam();
irp.setDestination(new BufferedImage(10 , 10 ,
BufferedImage.TYPE_3BYTE_BGR));
try {
image = ireader.readAll(0 , irp);
bi_1 = ireader.read(0 , irp);
bi_2 = ireader.read(0 );
} catch (java.io.IOException ee) {
throw new RuntimeException("Unexpected exception: " + ee);
}
bi = (BufferedImage)image.getRenderedImage();
if (bi.getType() != bi_1.getType()) {
throw new RuntimeException("Images have different type!" );
}
}
public static class DummyImageReaderImpl extends ImageReader {
public DummyImageReaderImpl(ImageReaderSpi originatingProvider) {
super (originatingProvider);
}
public BufferedImage read(int imageIndex, ImageReadParam param)
throws IOException {
if (input == null )
throw new IllegalStateException();
Objects.checkIndex(imageIndex, 1 );
if (seekForwardOnly) {
if (imageIndex < minIndex)
throw new IndexOutOfBoundsException();
minIndex = imageIndex;
}
return getDestination(param, getImageTypes(imageIndex), 10 , 15 );
}
public Iterator getImageTypes(int imageIndex) throws IOException {
if (input == null )
throw new IllegalStateException();
Objects.checkIndex(imageIndex, 1 );
Vector imageTypes = new Vector();
imageTypes.add(ImageTypeSpecifier.createFromBufferedImageType
(BufferedImage.TYPE_BYTE_GRAY ));
return imageTypes.iterator();
}
public int getNumImages(boolean allowSearch) throws IOException {return 1 ;}
public int getWidth(int imageIndex) throws IOException {return 1 ;}
public int getHeight(int imageIndex) throws IOException {return 1 ;}
public IIOMetadata getStreamMetadata() throws IOException {return null ;}
public IIOMetadata getImageMetadata(int imageIndex)
throws IOException {return null ;}
}
}
Messung V0.5 in Prozent C=97 H=97 G=96
¤ Dauer der Verarbeitung: 0.3 Sekunden
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