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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER .
*
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* under the terms of the GNU General Public License version 2 only , as
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*
* 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 ) .
*
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* 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 6782574
* @ summary Test verifies that incorrect sample masks are correctly handled
* by the constructor of the SinglePixelPackedSampleModel class
* and do not cause internal error in the medialib glue code .
*
* @ run main IncorrectSampleMaskTest
*/
import java.awt.geom.AffineTransform;
import java.awt.image.AffineTransformOp;
import java.awt.image.BufferedImageOp;
import java.awt.image.DataBuffer;
import java.awt.image.DataBufferByte;
import java.awt.image.DataBufferInt;
import java.awt.image.DataBufferUShort;
import java.awt.image.Raster;
import java.awt.image.RasterOp;
import java.awt.image.WritableRaster;
import java.awt.image.SinglePixelPackedSampleModel;
public class IncorrectSampleMaskTest {
public static void main(String[] args) {
int [] dataTypes = new int [] {
DataBuffer.TYPE_BYTE,
DataBuffer.TYPE_USHORT,
DataBuffer.TYPE_INT };
for (int type : dataTypes) {
doTest(type);
}
}
private static final int w = 100 ;
private static final int h = 100 ;
private static AffineTransform at =
AffineTransform.getScaleInstance(0 .5 , 0 .5 );
private static RasterOp op =
new AffineTransformOp(at, AffineTransformOp.TYPE_NEAREST_NEIGHBOR);
private static void doTest(int dataType) {
int maxSize = DataBuffer.getDataTypeSize(dataType);
System.out.println("Type size: " + maxSize);
int theMask = (int )(1 L << (maxSize + 2 )) - 1 ;
System.out.printf("theMask=%x\n" , theMask);
SinglePixelPackedSampleModel sm =
new SinglePixelPackedSampleModel(dataType, w, h,
new int [] { theMask });
int [] sampleSize = sm.getSampleSize();
for (int s : sampleSize) {
if (s > maxSize) {
throw new RuntimeException("Test failed: sample size is too big:" + s);
}
}
System.out.println("Test medialib..." );
DataBuffer buf = createDataBuffer(dataType);
WritableRaster wr = Raster.createWritableRaster(sm, buf, null );
op.filter(wr, null );
System.out.println("Test PASSED." );
}
private static DataBuffer createDataBuffer(int type) {
switch (type) {
case DataBuffer.TYPE_BYTE: {
byte [] buf = new byte [w * h];
return new DataBufferByte(buf, buf.length);
}
case DataBuffer.TYPE_USHORT: {
short [] buf = new short [w * h];
return new DataBufferUShort(buf, buf.length);
}
case DataBuffer.TYPE_INT: {
int [] buf = new int [w * h];
return new DataBufferInt(buf, buf.length);
}
default :
throw new RuntimeException("Unsupported data type." );
}
}
}
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