547 lines
14 KiB
Java
547 lines
14 KiB
Java
/* Copyright (C) 2000, 2002, 2003 Free Software Foundation
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package java.awt.image;
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import java.awt.Point;
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import java.awt.Rectangle;
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/**
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* @author Rolf W. Rasmussen (rolfwr@ii.uib.no)
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*/
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public class Raster
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{
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protected SampleModel sampleModel;
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protected DataBuffer dataBuffer;
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protected int minX;
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protected int minY;
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protected int width;
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protected int height;
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protected int sampleModelTranslateX;
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protected int sampleModelTranslateY;
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protected int numBands;
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protected int numDataElements;
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protected Raster parent;
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protected Raster(SampleModel sampleModel, Point origin)
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{
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this(sampleModel, sampleModel.createDataBuffer(), origin);
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}
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protected Raster(SampleModel sampleModel, DataBuffer dataBuffer,
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Point origin)
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{
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this(sampleModel, dataBuffer,
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new Rectangle(origin.x, origin.y,
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sampleModel.getWidth(), sampleModel.getHeight()),
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origin, null);
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}
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protected Raster(SampleModel sampleModel, DataBuffer dataBuffer,
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Rectangle aRegion,
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Point sampleModelTranslate, Raster parent)
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{
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this.sampleModel = sampleModel;
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this.dataBuffer = dataBuffer;
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this.minX = aRegion.x;
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this.minY = aRegion.y;
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this.width = aRegion.width;
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this.height = aRegion.height;
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// If sampleModelTranslate is null, use (0,0). Methods such as
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// Raster.createRaster are specified to allow for a null argument.
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if (sampleModelTranslate != null)
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{
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this.sampleModelTranslateX = sampleModelTranslate.x;
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this.sampleModelTranslateY = sampleModelTranslate.y;
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}
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this.numBands = sampleModel.getNumBands();
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this.numDataElements = sampleModel.getNumDataElements();
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this.parent = parent;
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}
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public static WritableRaster createInterleavedRaster(int dataType,
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int w, int h,
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int bands,
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Point location)
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{
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int[] bandOffsets = new int[bands];
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// TODO: Maybe not generate this every time.
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for (int b=0; b<bands; b++) bandOffsets[b] = b;
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int scanlineStride = bands*w;
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return createInterleavedRaster(dataType, w, h, scanlineStride, bands,
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bandOffsets, location);
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}
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public static WritableRaster createInterleavedRaster(int dataType,
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int w, int h,
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int scanlineStride,
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int pixelStride,
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int[] bandOffsets,
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Point location)
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{
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SampleModel sm = new ComponentSampleModel(dataType,
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w, h,
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pixelStride,
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scanlineStride,
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bandOffsets);
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return createWritableRaster(sm, location);
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}
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public static WritableRaster createBandedRaster(int dataType,
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int w, int h, int bands,
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Point location)
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{
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SampleModel sm = new BandedSampleModel(dataType, w, h, bands);
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return createWritableRaster(sm, location);
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}
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public static WritableRaster createBandedRaster(int dataType,
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int w, int h,
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int scanlineStride,
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int[] bankIndices,
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int[] bandOffsets,
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Point location)
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{
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SampleModel sm = new BandedSampleModel(dataType, w, h, scanlineStride,
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bankIndices, bandOffsets);
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return createWritableRaster(sm, location);
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}
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public static WritableRaster createPackedRaster(int dataType,
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int w, int h,
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int[] bandMasks,
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Point location)
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{
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SampleModel sm = new SinglePixelPackedSampleModel(dataType,
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w, h,
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bandMasks);
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return createWritableRaster(sm, location);
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}
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public static WritableRaster createPackedRaster(int dataType,
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int w, int h,
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int bands, int bitsPerBand,
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Point location)
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{
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if (bands <= 0 || (bands * bitsPerBand > getTypeBits(dataType)))
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throw new IllegalArgumentException();
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SampleModel sm;
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if (bands == 1)
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sm = new MultiPixelPackedSampleModel(dataType, w, h, bitsPerBand);
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else
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{
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int[] bandMasks = new int[bands];
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int mask = 0x1;
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for (int bits = bitsPerBand; --bits != 0;)
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mask = (mask << 1) | 0x1;
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for (int i = 0; i < bands; i++)
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{
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bandMasks[i] = mask;
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mask <<= bitsPerBand;
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}
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sm = new SinglePixelPackedSampleModel(dataType, w, h, bandMasks);
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}
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return createWritableRaster(sm, location);
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}
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public static WritableRaster
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createInterleavedRaster(DataBuffer dataBuffer, int w, int h,
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int scanlineStride, int pixelStride,
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int[] bandOffsets, Point location)
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{
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SampleModel sm = new ComponentSampleModel(dataBuffer.getDataType(),
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w, h,
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scanlineStride,
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pixelStride,
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bandOffsets);
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return createWritableRaster(sm, dataBuffer, location);
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}
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public static
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WritableRaster createBandedRaster(DataBuffer dataBuffer,
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int w, int h,
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int scanlineStride,
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int[] bankIndices,
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int[] bandOffsets,
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Point location)
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{
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SampleModel sm = new BandedSampleModel(dataBuffer.getDataType(),
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w, h, scanlineStride,
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bankIndices, bandOffsets);
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return createWritableRaster(sm, dataBuffer, location);
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}
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public static WritableRaster
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createPackedRaster(DataBuffer dataBuffer,
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int w, int h,
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int scanlineStride,
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int[] bandMasks,
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Point location)
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{
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SampleModel sm =
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new SinglePixelPackedSampleModel(dataBuffer.getDataType(),
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w, h,
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scanlineStride,
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bandMasks);
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return createWritableRaster(sm, dataBuffer, location);
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}
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public static WritableRaster
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createPackedRaster(DataBuffer dataBuffer,
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int w, int h,
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int bitsPerPixel,
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Point location)
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{
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SampleModel sm =
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new MultiPixelPackedSampleModel(dataBuffer.getDataType(),
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w, h,
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bitsPerPixel);
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return createWritableRaster(sm, dataBuffer, location);
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}
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public static Raster createRaster(SampleModel sm, DataBuffer db,
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Point location)
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{
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return new Raster(sm, db, location);
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}
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public static WritableRaster createWritableRaster(SampleModel sm,
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Point location)
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{
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return new WritableRaster(sm, location);
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}
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public static WritableRaster createWritableRaster(SampleModel sm,
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DataBuffer db,
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Point location)
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{
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return new WritableRaster(sm, db, location);
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}
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public Raster getParent()
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{
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return parent;
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}
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public final int getSampleModelTranslateX()
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{
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return sampleModelTranslateX;
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}
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public final int getSampleModelTranslateY()
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{
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return sampleModelTranslateY;
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}
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public WritableRaster createCompatibleWritableRaster()
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{
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return new WritableRaster(getSampleModel(), new Point(minX, minY));
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}
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public WritableRaster createCompatibleWritableRaster(int w, int h)
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{
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return createCompatibleWritableRaster(minX, minY, w, h);
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}
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public WritableRaster createCompatibleWritableRaster(Rectangle rect)
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{
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return createCompatibleWritableRaster(rect.x, rect.y,
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rect.width, rect.height);
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}
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public WritableRaster createCompatibleWritableRaster(int x, int y,
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int w, int h)
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{
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SampleModel sm = getSampleModel().createCompatibleSampleModel(w, h);
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return new WritableRaster(sm, sm.createDataBuffer(),
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new Point(x, y));
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}
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public Raster createTranslatedChild(int childMinX, int childMinY) {
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int tcx = sampleModelTranslateX - minX + childMinX;
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int tcy = sampleModelTranslateY - minY + childMinY;
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return new Raster(sampleModel, dataBuffer,
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new Rectangle(childMinX, childMinY,
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width, height),
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new Point(tcx, tcy),
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this);
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}
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public Raster createChild(int parentX, int parentY, int width,
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int height, int childMinX, int childMinY,
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int[] bandList)
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{
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/* FIXME: Throw RasterFormatException if child bounds extends
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beyond the bounds of this raster. */
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SampleModel sm = (bandList == null) ?
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sampleModel :
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sampleModel.createSubsetSampleModel(bandList);
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/*
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data origin
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/
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+-------------------------
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|\. __ parent trans
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| \`.
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| \ `. parent origin
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| \ `. /
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| /\ +-------- - -
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|trans\ /<\-- deltaTrans
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|child +-+-\---- - -
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| /|`| \__ parent [x, y]
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|child | |`. \
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|origin| : `.\
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| | / `\
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| : / +
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| child [x, y]
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parent_xy - parent_trans = child_xy - child_trans
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child_trans = parent_trans + child_xy - parent_xy
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*/
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return new Raster(sm, dataBuffer,
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new Rectangle(childMinX, childMinY,
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width, height),
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new Point(sampleModelTranslateX+childMinX-parentX,
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sampleModelTranslateY+childMinY-parentY),
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this);
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}
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public Rectangle getBounds()
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{
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return new Rectangle(minX, minY, width, height);
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}
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public final int getMinX()
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{
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return minX;
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}
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public final int getMinY()
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{
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return minY;
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}
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public final int getWidth()
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{
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return width;
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}
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public final int getHeight()
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{
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return height;
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}
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public final int getNumBands()
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{
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return numBands;
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}
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public final int getNumDataElements()
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{
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return numDataElements;
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}
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public final int getTransferType()
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{
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return sampleModel.getTransferType();
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}
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public DataBuffer getDataBuffer()
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{
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return dataBuffer;
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}
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public SampleModel getSampleModel()
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{
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return sampleModel;
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}
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public Object getDataElements(int x, int y, Object outData)
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{
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return sampleModel.getDataElements(x-sampleModelTranslateX,
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y-sampleModelTranslateY,
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outData, dataBuffer);
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}
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public Object getDataElements(int x, int y, int w, int h,
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Object outData)
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{
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return sampleModel.getDataElements(x-sampleModelTranslateX,
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y-sampleModelTranslateY,
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w, h, outData, dataBuffer);
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}
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public int[] getPixel(int x, int y, int[] iArray)
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{
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return sampleModel.getPixel(x-sampleModelTranslateX,
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y-sampleModelTranslateY,
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iArray, dataBuffer);
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}
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public float[] getPixel(int x, int y, float[] fArray)
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{
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return sampleModel.getPixel(x-sampleModelTranslateX,
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y-sampleModelTranslateY,
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fArray, dataBuffer);
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}
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public double[] getPixel(int x, int y, double[] dArray)
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{
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return sampleModel.getPixel(x-sampleModelTranslateX,
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y-sampleModelTranslateY,
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dArray, dataBuffer);
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}
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public int[] getPixels(int x, int y, int w, int h, int[] iArray)
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{
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return sampleModel.getPixels(x-sampleModelTranslateX,
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y-sampleModelTranslateY,
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w, h, iArray, dataBuffer);
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}
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public float[] getPixels(int x, int y, int w, int h,
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float[] fArray)
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{
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return sampleModel.getPixels(x-sampleModelTranslateX,
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y-sampleModelTranslateY,
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w, h, fArray, dataBuffer);
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}
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public double[] getPixels(int x, int y, int w, int h,
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double[] dArray)
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{
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return sampleModel.getPixels(x-sampleModelTranslateX,
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y-sampleModelTranslateY,
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w, h, dArray, dataBuffer);
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}
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public int getSample(int x, int y, int b)
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{
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return sampleModel.getSample(x-sampleModelTranslateX,
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y-sampleModelTranslateY,
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b, dataBuffer);
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}
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public float getSampleFloat(int x, int y, int b)
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{
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return sampleModel.getSampleFloat(x-sampleModelTranslateX,
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y-sampleModelTranslateY,
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b, dataBuffer);
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}
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public double getSampleDouble(int x, int y, int b)
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{
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return sampleModel.getSampleDouble(x-sampleModelTranslateX,
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y-sampleModelTranslateY,
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b, dataBuffer);
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}
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public int[] getSamples(int x, int y, int w, int h, int b,
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int[] iArray)
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{
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return sampleModel.getSamples(x-sampleModelTranslateX,
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y-sampleModelTranslateY,
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w, h, b, iArray, dataBuffer);
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}
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public float[] getSamples(int x, int y, int w, int h, int b,
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float[] fArray)
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{
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return sampleModel.getSamples(x-sampleModelTranslateX,
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y-sampleModelTranslateY,
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w, h, b, fArray, dataBuffer);
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}
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public double[] getSamples(int x, int y, int w, int h, int b,
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double[] dArray)
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{
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return sampleModel.getSamples(x-sampleModelTranslateX,
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y-sampleModelTranslateY,
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w, h, b, dArray, dataBuffer);
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}
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/**
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* Create a String representing the stat of this Raster.
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* @return A String representing the stat of this Raster.
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* @see java.lang.Object#toString()
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*/
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public String toString()
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{
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StringBuffer result = new StringBuffer();
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result.append(getClass().getName());
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result.append("[(");
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result.append(minX).append(",").append(minY).append("), ");
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result.append(width).append(" x ").append(height).append(",");
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result.append(sampleModel).append(",");
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result.append(dataBuffer);
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result.append("]");
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return result.toString();
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}
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// Map from datatype to bits
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private static int getTypeBits(int dataType)
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{
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switch (dataType)
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{
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case DataBuffer.TYPE_BYTE:
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return 8;
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case DataBuffer.TYPE_USHORT:
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case DataBuffer.TYPE_SHORT:
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return 16;
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case DataBuffer.TYPE_INT:
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case DataBuffer.TYPE_FLOAT:
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return 32;
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case DataBuffer.TYPE_DOUBLE:
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return 64;
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default:
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return 0;
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}
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}
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}
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