001 /* PixelInterleavedSampleModel.java
002 Copyright (C) 2004, 2005 Free Software Foundation, Inc.
003
004 This file is part of GNU Classpath.
005
006 GNU Classpath is free software; you can redistribute it and/or modify
007 it under the terms of the GNU General Public License as published by
008 the Free Software Foundation; either version 2, or (at your option)
009 any later version.
010
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012 WITHOUT ANY WARRANTY; without even the implied warranty of
013 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
014 General Public License for more details.
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017 along with GNU Classpath; see the file COPYING. If not, write to the
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019 02110-1301 USA.
020
021 Linking this library statically or dynamically with other modules is
022 making a combined work based on this library. Thus, the terms and
023 conditions of the GNU General Public License cover the whole
024 combination.
025
026 As a special exception, the copyright holders of this library give you
027 permission to link this library with independent modules to produce an
028 executable, regardless of the license terms of these independent
029 modules, and to copy and distribute the resulting executable under
030 terms of your choice, provided that you also meet, for each linked
031 independent module, the terms and conditions of the license of that
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033 or based on this library. If you modify this library, you may extend
034 this exception to your version of the library, but you are not
035 obligated to do so. If you do not wish to do so, delete this
036 exception statement from your version. */
037
038 package java.awt.image;
039
040
041 /**
042 * A <code>SampleModel</code> that uses exactly one element of the
043 * raster’s {@link DataBuffer} per pixel, holds all bands in a
044 * single bank, and stores band data in pixel-interleaved manner.
045 *
046 * @since 1.2
047 *
048 * @author Sascha Brawer (brawer@dandelis.ch)
049 */
050 public class PixelInterleavedSampleModel
051 extends ComponentSampleModel
052 {
053 public PixelInterleavedSampleModel(int dataType, int width, int height,
054 int pixelStride, int scanlineStride,
055 int[] bandOffsets)
056 {
057 super(dataType, width, height, pixelStride, scanlineStride,
058 bandOffsets);
059 }
060
061
062 /**
063 * Creates a new <code>SampleModel</code> that is like this one, but
064 * uses the specified width and height.
065 *
066 * @param width the number of pixels in the horizontal direction.
067 *
068 * @param height the number of pixels in the vertical direction.
069 */
070 public SampleModel createCompatibleSampleModel(int width, int height)
071 {
072 return new PixelInterleavedSampleModel(dataType, width, height,
073 pixelStride, scanlineStride,
074 bandOffsets);
075 }
076
077
078 /**
079 * Creates a new <code>SampleModel</code> that is like this one, but
080 * uses only a subset of its bands.
081 *
082 * @param bands an array whose elements indicate which bands shall
083 * be part of the subset. For example, <code>[0, 2, 3]</code> would
084 * create a SampleModel containing bands #0, #2 and #3.
085 */
086 public SampleModel createSubsetSampleModel(int[] bands)
087 {
088 int[] subOffsets;
089
090 subOffsets = new int[bands.length];
091 for (int i = 0; i < bands.length; i++)
092 subOffsets[i] = bandOffsets[bands[i]];
093
094 return new PixelInterleavedSampleModel(dataType, width, height,
095 pixelStride, scanlineStride,
096 subOffsets);
097 }
098 }