1 /*
   2  * Copyright (c) 2009, 2011, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22 */
  23 
  24 /*
  25  * @test
  26  * @bug     6782574
  27  * @summary Test verifies that incorrect sample masks are correctly handled
  28  *          by the constructor of the SinglePixelPackedSampleModel class
  29  *          and do not cause internal error in the medialib glue code.
  30  *
  31  * @run     main IncorrectSampleMaskTest
  32  */
  33 
  34 import java.awt.geom.AffineTransform;
  35 import java.awt.image.AffineTransformOp;
  36 import java.awt.image.BufferedImageOp;
  37 import java.awt.image.DataBuffer;
  38 import java.awt.image.DataBufferByte;
  39 import java.awt.image.DataBufferInt;
  40 import java.awt.image.DataBufferUShort;
  41 import java.awt.image.Raster;
  42 import java.awt.image.RasterOp;
  43 import java.awt.image.WritableRaster;
  44 import java.awt.image.SinglePixelPackedSampleModel;
  45 
  46 public class IncorrectSampleMaskTest {
  47     public static void main(String[] args) {
  48         int[] dataTypes = new int[] {
  49             DataBuffer.TYPE_BYTE,
  50             DataBuffer.TYPE_USHORT,
  51             DataBuffer.TYPE_INT };
  52 
  53         for (int type : dataTypes) {
  54             doTest(type);
  55         }
  56     }
  57 
  58     private static final int w = 100;
  59     private static final int h = 100;
  60 
  61     private static AffineTransform at =
  62         AffineTransform.getScaleInstance(0.5, 0.5);
  63 
  64     private static RasterOp op =
  65         new AffineTransformOp(at, AffineTransformOp.TYPE_NEAREST_NEIGHBOR);
  66 
  67     private static void doTest(int dataType) {
  68         int maxSize = DataBuffer.getDataTypeSize(dataType);
  69         System.out.println("Type size: " + maxSize);
  70 
  71         int theMask = (int)(1L << (maxSize + 2)) - 1;
  72         System.out.printf("theMask=%x\n", theMask);
  73 
  74         SinglePixelPackedSampleModel sm =
  75             new SinglePixelPackedSampleModel(dataType, w, h,
  76                                              new int[] { theMask });
  77 
  78 
  79         int[] sampleSize = sm.getSampleSize();
  80         for (int s : sampleSize) {
  81             if (s > maxSize) {
  82                 throw new RuntimeException("Test failed: sample size is too big:" + s);
  83             }
  84         }
  85 
  86         System.out.println("Test medialib...");
  87         DataBuffer buf = createDataBuffer(dataType);
  88 
  89         WritableRaster wr = Raster.createWritableRaster(sm, buf, null);
  90 
  91         op.filter(wr, null);
  92         System.out.println("Test PASSED.");
  93     }
  94 
  95     private static DataBuffer createDataBuffer(int type) {
  96         switch (type) {
  97         case DataBuffer.TYPE_BYTE: {
  98             byte[] buf = new byte[w * h];
  99             return new DataBufferByte(buf, buf.length);
 100         }
 101         case DataBuffer.TYPE_USHORT: {
 102             short[] buf = new short[w * h];
 103             return new DataBufferUShort(buf, buf.length);
 104         }
 105         case DataBuffer.TYPE_INT: {
 106             int[] buf = new int[w * h];
 107             return new DataBufferInt(buf, buf.length);
 108         }
 109         default :
 110             throw new RuntimeException("Unsupported data type.");
 111         }
 112     }
 113 }