src/share/classes/sun/awt/image/ByteBandedRaster.java

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   1 /*
   2  * Copyright (c) 1997, 2007, 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.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any


 152             int yOffset = aRegion.y - origin.y;
 153             for (int i = 0; i < bankIndices.length; i++) {
 154                data[i] = stealData(dbb, bankIndices[i]);
 155                dataOffsets[i] = dOffsets[bankIndices[i]] +
 156                    xOffset + yOffset*scanlineStride + bandOffsets[i];
 157             }
 158         } else {
 159             throw new RasterFormatException("ByteBandedRasters must have"+
 160                 "BandedSampleModels");
 161         }
 162         verify();
 163     }
 164 
 165 
 166     /**
 167      * Returns a copy of the data offsets array. For each band the data
 168      * offset is the index into the band's data array, of the first sample
 169      * of the band.
 170      */
 171     public int[] getDataOffsets() {
 172         return (int[])dataOffsets.clone();
 173     }
 174 
 175     /**
 176      * Returns data offset for the specified band.  The data offset
 177      * is the index into the band's data array
 178      * in which the first sample of the first scanline is stored.
 179      * @param The band whose offset is returned.
 180      */
 181     public int getDataOffset(int band) {
 182         return dataOffsets[band];
 183     }
 184 
 185     /**
 186      * Returns the scanline stride -- the number of data array elements
 187      * between a given sample and the sample in the same column
 188      * of the next row in the same band.
 189      */
 190     public int getScanlineStride() {
 191         return scanlineStride;
 192     }


   1 /*
   2  * Copyright (c) 1997, 2014, 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.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any


 152             int yOffset = aRegion.y - origin.y;
 153             for (int i = 0; i < bankIndices.length; i++) {
 154                data[i] = stealData(dbb, bankIndices[i]);
 155                dataOffsets[i] = dOffsets[bankIndices[i]] +
 156                    xOffset + yOffset*scanlineStride + bandOffsets[i];
 157             }
 158         } else {
 159             throw new RasterFormatException("ByteBandedRasters must have"+
 160                 "BandedSampleModels");
 161         }
 162         verify();
 163     }
 164 
 165 
 166     /**
 167      * Returns a copy of the data offsets array. For each band the data
 168      * offset is the index into the band's data array, of the first sample
 169      * of the band.
 170      */
 171     public int[] getDataOffsets() {
 172         return dataOffsets.clone();
 173     }
 174 
 175     /**
 176      * Returns data offset for the specified band.  The data offset
 177      * is the index into the band's data array
 178      * in which the first sample of the first scanline is stored.
 179      * @param The band whose offset is returned.
 180      */
 181     public int getDataOffset(int band) {
 182         return dataOffsets[band];
 183     }
 184 
 185     /**
 186      * Returns the scanline stride -- the number of data array elements
 187      * between a given sample and the sample in the same column
 188      * of the next row in the same band.
 189      */
 190     public int getScanlineStride() {
 191         return scanlineStride;
 192     }