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/*
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* Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Sun designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Sun in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*/
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package sun.awt.image;
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import java.awt.image.Raster;
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import java.awt.image.WritableRaster;
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import java.awt.image.RasterFormatException;
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import java.awt.image.SampleModel;
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import java.awt.image.BandedSampleModel;
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import java.awt.image.DataBuffer;
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import java.awt.image.DataBufferByte;
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import java.awt.Rectangle;
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import java.awt.Point;
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/**
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* This class defines a Raster with pixels consisting of multiple
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* 8-bit samples stored in possibly separate arrays for each band.
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* Operations on sets of pixels are performed on a given band in the
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* Raster before moving on to the next band. The arrays used for
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* storage may be distinct or shared between some or all of the bands.
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* Each band additionally has an offset that is added to determine the
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* DataBuffer location of each pixel.
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*
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* There is only one scanline stride for all bands. The pixel stride
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* is always equal to one. This type of raster can be used with a
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* ComponentColorModel. This class requires a BandedSampleModel.
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*
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*/
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public class ByteBandedRaster extends SunWritableRaster {
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/** Data offsets for each band of image data. */
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int[] dataOffsets;
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/** Scanline stride of the image data contained in this Raster. */
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int scanlineStride;
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/** The image data array. */
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byte[][] data;
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/** A cached copy of minX + width for use in bounds checks. */
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private int maxX;
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/** A cached copy of minY + height for use in bounds checks. */
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private int maxY;
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/**
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* Constructs a ByteBandedRaster with the given sampleModel. The
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* Raster's upper left corner is origin and it is the same
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* size as the SampleModel. A dataBuffer large
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* enough to describe the Raster is automatically created. SampleModel
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* must be of type BandedSampleModel.
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* @param sampleModel The SampleModel that specifies the layout.
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* @param origin The Point that specifies the origin.
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*/
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public ByteBandedRaster(SampleModel sampleModel,
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Point origin) {
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this(sampleModel,
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sampleModel.createDataBuffer(),
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new Rectangle(origin.x,
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origin.y,
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sampleModel.getWidth(),
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sampleModel.getHeight()),
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origin,
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null);
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}
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/**
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* Constructs a ByteBanded Raster with the given sampleModel
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* and DataBuffer. The Raster's upper left corner is origin and
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* it is the same size as the SampleModel. The DataBuffer is not
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* initialized and must be a DataBufferShort compatible with SampleModel.
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* SampleModel must be of type BandedSampleModel.
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* @param sampleModel The SampleModel that specifies the layout.
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* @param dataBuffer The DataBufferShort that contains the image data.
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* @param origin The Point that specifies the origin.
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*/
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public ByteBandedRaster(SampleModel sampleModel,
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DataBuffer dataBuffer,
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Point origin) {
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this(sampleModel, dataBuffer,
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new Rectangle(origin.x , origin.y,
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sampleModel.getWidth(),
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sampleModel.getHeight()),
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origin, null);
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}
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/**
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* Constructs a ByteBandedRaster with the given sampleModel,
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* DataBuffer, and parent. DataBuffer must be a DataBufferShort and
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* SampleModel must be of type BandedSampleModel.
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* When translated into the base Raster's
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* coordinate system, aRegion must be contained by the base Raster.
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* Origin is the coordinate in the new Raster's coordinate system of
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* the origin of the base Raster. (The base Raster is the Raster's
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* ancestor which has no parent.)
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*
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* Note that this constructor should generally be called by other
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* constructors or create methods, it should not be used directly.
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* @param sampleModel The SampleModel that specifies the layout.
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* @param dataBuffer The DataBufferShort that contains the image data.
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* @param aRegion The Rectangle that specifies the image area.
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* @param origin The Point that specifies the origin.
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* @param parent The parent (if any) of this raster.
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*/
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public ByteBandedRaster(SampleModel sampleModel,
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DataBuffer dataBuffer,
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Rectangle aRegion,
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Point origin,
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ByteBandedRaster parent) {
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super(sampleModel, dataBuffer, aRegion, origin, parent);
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this.maxX = minX + width;
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this.maxY = minY + height;
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if (!(dataBuffer instanceof DataBufferByte)) {
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throw new RasterFormatException("ByteBandedRaster must have" +
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"byte DataBuffers");
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}
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DataBufferByte dbb = (DataBufferByte)dataBuffer;
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if (sampleModel instanceof BandedSampleModel) {
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BandedSampleModel bsm = (BandedSampleModel)sampleModel;
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this.scanlineStride = bsm.getScanlineStride();
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int bankIndices[] = bsm.getBankIndices();
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int bandOffsets[] = bsm.getBandOffsets();
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int dOffsets[] = dbb.getOffsets();
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dataOffsets = new int[bankIndices.length];
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data = new byte[bankIndices.length][];
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int xOffset = aRegion.x - origin.x;
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int yOffset = aRegion.y - origin.y;
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for (int i = 0; i < bankIndices.length; i++) {
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data[i] = stealData(dbb, bankIndices[i]);
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dataOffsets[i] = dOffsets[bankIndices[i]] +
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xOffset + yOffset*scanlineStride + bandOffsets[i];
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}
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} else {
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throw new RasterFormatException("ByteBandedRasters must have"+
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"BandedSampleModels");
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}
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verify(false);
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}
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/**
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* Returns a copy of the data offsets array. For each band the data
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* offset is the index into the band's data array, of the first sample
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* of the band.
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*/
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public int[] getDataOffsets() {
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return (int[])dataOffsets.clone();
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}
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/**
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* Returns data offset for the specified band. The data offset
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* is the index into the band's data array
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* in which the first sample of the first scanline is stored.
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* @param The band whose offset is returned.
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*/
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public int getDataOffset(int band) {
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return dataOffsets[band];
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}
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/**
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* Returns the scanline stride -- the number of data array elements
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* between a given sample and the sample in the same column
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* of the next row in the same band.
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*/
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public int getScanlineStride() {
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return scanlineStride;
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}
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/**
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* Returns the pixel stride, which is always equal to one for
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* a Raster with a BandedSampleModel.
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*/
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public int getPixelStride() {
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return 1;
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}
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/**
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* Returns a reference to the entire data array.
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*/
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public byte[][] getDataStorage() {
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return data;
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}
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/**
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* Returns a reference to the specific band data array.
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*/
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public byte[] getDataStorage(int band) {
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return data[band];
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}
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/**
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* Returns the data elements for all bands at the specified
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* location.
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* An ArrayIndexOutOfBounds exception will be thrown at runtime
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* if the pixel coordinate is out of bounds.
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* A ClassCastException will be thrown if the input object is non null
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* and references anything other than an array of transferType.
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* @param x The X coordinate of the pixel location.
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* @param y The Y coordinate of the pixel location.
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* @param outData An object reference to an array of type defined by
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* getTransferType() and length getNumDataElements().
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* If null an array of appropriate type and size will be
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* allocated.
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* @return An object reference to an array of type defined by
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* getTransferType() with the request pixel data.
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*/
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public Object getDataElements(int x, int y, Object obj) {
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if ((x < this.minX) || (y < this.minY) ||
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(x >= this.maxX) || (y >= this.maxY)) {
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throw new ArrayIndexOutOfBoundsException
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("Coordinate out of bounds!");
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}
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byte outData[];
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if (obj == null) {
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outData = new byte[numDataElements];
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} else {
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outData = (byte[])obj;
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}
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int off = (y-minY)*scanlineStride + (x-minX);
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for (int band = 0; band < numDataElements; band++) {
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outData[band] = data[band][dataOffsets[band] + off];
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}
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return outData;
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}
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/**
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* Returns an array of data elements from the specified
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* rectangular region.
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* An ArrayIndexOutOfBounds exception will be thrown at runtime
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* if the pixel coordinates are out of bounds.
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* A ClassCastException will be thrown if the input object is non null
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* and references anything other than an array of transferType.
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* <pre>
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* byte[] bandData = (byte[])raster.getDataElement(x, y, w, h, null);
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* int numDataElements = raster.getNumDataElements();
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* byte[] pixel = new byte[numDataElements];
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* // To find a data element at location (x2, y2)
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* System.arraycopy(bandData, ((y2-y)*w + (x2-x))*numDataElements,
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* pixel, 0, numDataElements);
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* </pre>
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* @param x The X coordinate of the upper left pixel location.
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* @param y The Y coordinate of the upper left pixel location.
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* @param width Width of the pixel rectangle.
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* @param height Height of the pixel rectangle.
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* @param outData An object reference to an array of type defined by
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* getTransferType() and length w*h*getNumDataElements().
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* If null an array of appropriate type and size will be
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* allocated.
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* @return An object reference to an array of type defined by
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* getTransferType() with the request pixel data.
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*/
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public Object getDataElements(int x, int y, int w, int h, Object obj) {
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if ((x < this.minX) || (y < this.minY) ||
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(x + w > this.maxX) || (y + h > this.maxY)) {
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throw new ArrayIndexOutOfBoundsException
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("Coordinate out of bounds!");
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}
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byte outData[];
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if (obj == null) {
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outData = new byte[numDataElements*w*h];
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} else {
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outData = (byte[])obj;
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}
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int yoff = (y-minY)*scanlineStride + (x-minX);
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for (int c = 0; c < numDataElements; c++) {
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int off = c;
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byte[] bank = data[c];
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int dataOffset = dataOffsets[c];
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int yoff2 = yoff;
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for (int ystart=0; ystart < h; ystart++, yoff2 += scanlineStride) {
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int xoff = dataOffset + yoff2;
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for (int xstart=0; xstart < w; xstart++) {
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outData[off] = bank[xoff++];
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off += numDataElements;
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}
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}
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}
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return outData;
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}
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/**
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* Returns a byte array of data elements from the specified rectangular
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* region for the specified band.
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* An ArrayIndexOutOfBounds exception will be thrown at runtime
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* if the pixel coordinates are out of bounds.
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* <pre>
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* byte[] bandData = raster.getByteData(x, y, w, h, null);
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* // To find the data element at location (x2, y2)
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* byte bandElement = bandData[((y2-y)*w + (x2-x))];
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* </pre>
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* @param x The X coordinate of the upper left pixel location.
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* @param y The Y coordinate of the upper left pixel location.
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* @param width Width of the pixel rectangle.
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* @param height Height of the pixel rectangle.
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* @param band The band to return.
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* @param outData If non-null, data elements for all bands
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* at the specified location are returned in this array.
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* @return Data array with data elements for all bands.
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*/
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public byte[] getByteData(int x, int y, int w, int h,
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int band, byte[] outData) {
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// Bounds check for 'band' will be performed automatically
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if ((x < this.minX) || (y < this.minY) ||
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(x + w > this.maxX) || (y + h > this.maxY)) {
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throw new ArrayIndexOutOfBoundsException
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("Coordinate out of bounds!");
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}
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if (outData == null) {
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outData = new byte[scanlineStride*h];
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}
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int yoff = (y-minY)*scanlineStride + (x-minX) + dataOffsets[band];
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if (scanlineStride == w) {
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System.arraycopy(data[band], yoff, outData, 0, w*h);
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} else {
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int off = 0;
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for (int ystart=0; ystart < h; ystart++, yoff += scanlineStride) {
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System.arraycopy(data[band], yoff, outData, off, w);
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off += w;
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}
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}
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return outData;
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}
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/**
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* Returns a byte array of data elements from the specified rectangular
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* region.
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* An ArrayIndexOutOfBounds exception will be thrown at runtime
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* if the pixel coordinates are out of bounds.
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* <pre>
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* byte[] bandData = raster.getByteData(x, y, w, h, null);
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* int numDataElements = raster.getNumDataElements();
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* byte[] pixel = new byte[numDataElements];
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* // To find a data element at location (x2, y2)
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* System.arraycopy(bandData, ((y2-y)*w + (x2-x))*numDataElements,
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* pixel, 0, numDataElements);
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* </pre>
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* @param x The X coordinate of the upper left pixel location.
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* @param y The Y coordinate of the upper left pixel location.
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* @param width Width of the pixel rectangle.
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* @param height Height of the pixel rectangle.
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* @param outData If non-null, data elements for all bands
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* at the specified location are returned in this array.
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* @return Data array with data elements for all bands.
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*/
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public byte[] getByteData(int x, int y, int w, int h, byte[] outData) {
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if ((x < this.minX) || (y < this.minY) ||
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(x + w > this.maxX) || (y + h > this.maxY)) {
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throw new ArrayIndexOutOfBoundsException
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("Coordinate out of bounds!");
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}
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if (outData == null) {
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outData = new byte[numDataElements*scanlineStride*h];
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}
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int yoff = (y-minY)*scanlineStride + (x-minX);
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for (int c = 0; c < numDataElements; c++) {
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int off = c;
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byte[] bank = data[c];
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int dataOffset = dataOffsets[c];
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// REMIND: Should keep track if dataoffsets are in a nice order
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int yoff2 = yoff;
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|
395 |
for (int ystart=0; ystart < h; ystart++, yoff2 += scanlineStride) {
|
|
396 |
int xoff = dataOffset + yoff2;
|
|
397 |
for (int xstart=0; xstart < w; xstart++) {
|
|
398 |
outData[off] = bank[xoff++];
|
|
399 |
off += numDataElements;
|
|
400 |
}
|
|
401 |
}
|
|
402 |
}
|
|
403 |
|
|
404 |
return outData;
|
|
405 |
}
|
|
406 |
|
|
407 |
/**
|
|
408 |
* Stores the data elements for all bands at the specified location.
|
|
409 |
* An ArrayIndexOutOfBounds exception will be thrown at runtime
|
|
410 |
* if the pixel coordinate is out of bounds.
|
|
411 |
* A ClassCastException will be thrown if the input object is non null
|
|
412 |
* and references anything other than an array of transferType.
|
|
413 |
* @param x The X coordinate of the pixel location.
|
|
414 |
* @param y The Y coordinate of the pixel location.
|
|
415 |
* @param inData An object reference to an array of type defined by
|
|
416 |
* getTransferType() and length getNumDataElements()
|
|
417 |
* containing the pixel data to place at x,y.
|
|
418 |
*/
|
|
419 |
public void setDataElements(int x, int y, Object obj) {
|
|
420 |
if ((x < this.minX) || (y < this.minY) ||
|
|
421 |
(x >= this.maxX) || (y >= this.maxY)) {
|
|
422 |
throw new ArrayIndexOutOfBoundsException
|
|
423 |
("Coordinate out of bounds!");
|
|
424 |
}
|
|
425 |
byte inData[] = (byte[])obj;
|
|
426 |
int off = (y-minY)*scanlineStride + (x-minX);
|
|
427 |
for (int i = 0; i < numDataElements; i++) {
|
|
428 |
data[i][dataOffsets[i] + off] = inData[i];
|
|
429 |
}
|
|
430 |
markDirty();
|
|
431 |
}
|
|
432 |
|
|
433 |
/**
|
|
434 |
* Stores the Raster data at the specified location.
|
|
435 |
* An ArrayIndexOutOfBounds exception will be thrown at runtime
|
|
436 |
* if the pixel coordinate is out of bounds.
|
|
437 |
* @param x The X coordinate of the pixel location.
|
|
438 |
* @param y The Y coordinate of the pixel location.
|
|
439 |
* @param inRaster Raster of data to place at x,y location.
|
|
440 |
*/
|
|
441 |
public void setDataElements(int x, int y, Raster inRaster) {
|
|
442 |
int dstOffX = inRaster.getMinX() + x;
|
|
443 |
int dstOffY = inRaster.getMinY() + y;
|
|
444 |
int width = inRaster.getWidth();
|
|
445 |
int height = inRaster.getHeight();
|
|
446 |
if ((dstOffX < this.minX) || (dstOffY < this.minY) ||
|
|
447 |
(dstOffX + width > this.maxX) || (dstOffY + height > this.maxY)) {
|
|
448 |
throw new ArrayIndexOutOfBoundsException
|
|
449 |
("Coordinate out of bounds!");
|
|
450 |
}
|
|
451 |
|
|
452 |
setDataElements(dstOffX, dstOffY, width, height, inRaster);
|
|
453 |
}
|
|
454 |
|
|
455 |
/**
|
|
456 |
* Stores the Raster data at the specified location.
|
|
457 |
* @param dstX The absolute X coordinate of the destination pixel
|
|
458 |
* that will receive a copy of the upper-left pixel of the
|
|
459 |
* inRaster
|
|
460 |
* @param dstY The absolute Y coordinate of the destination pixel
|
|
461 |
* that will receive a copy of the upper-left pixel of the
|
|
462 |
* inRaster
|
|
463 |
* @param width The number of pixels to store horizontally
|
|
464 |
* @param height The number of pixels to store vertically
|
|
465 |
* @param inRaster Raster of data to place at x,y location.
|
|
466 |
*/
|
|
467 |
private void setDataElements(int dstX, int dstY,
|
|
468 |
int width, int height,
|
|
469 |
Raster inRaster) {
|
|
470 |
// Assume bounds checking has been performed previously
|
|
471 |
if (width <= 0 || height <= 0) {
|
|
472 |
return;
|
|
473 |
}
|
|
474 |
|
|
475 |
int srcOffX = inRaster.getMinX();
|
|
476 |
int srcOffY = inRaster.getMinY();
|
|
477 |
Object tdata = null;
|
|
478 |
|
|
479 |
// // REMIND: Do something faster!
|
|
480 |
// if (inRaster instanceof ByteBandedRaster) {
|
|
481 |
// }
|
|
482 |
|
|
483 |
for (int startY=0; startY < height; startY++) {
|
|
484 |
// Grab one scanline at a time
|
|
485 |
tdata = inRaster.getDataElements(srcOffX, srcOffY+startY,
|
|
486 |
width, 1, tdata);
|
|
487 |
setDataElements(dstX, dstY+startY, width, 1, tdata);
|
|
488 |
}
|
|
489 |
}
|
|
490 |
|
|
491 |
/**
|
|
492 |
* Stores an array of data elements into the specified rectangular
|
|
493 |
* region.
|
|
494 |
* An ArrayIndexOutOfBounds exception will be thrown at runtime
|
|
495 |
* if the pixel coordinates are out of bounds.
|
|
496 |
* A ClassCastException will be thrown if the input object is non null
|
|
497 |
* and references anything other than an array of transferType.
|
|
498 |
* The data elements in the
|
|
499 |
* data array are assumed to be packed. That is, a data element
|
|
500 |
* for the nth band at location (x2, y2) would be found at:
|
|
501 |
* <pre>
|
|
502 |
* inData[((y2-y)*w + (x2-x))*numDataElements + n]
|
|
503 |
* </pre>
|
|
504 |
* @param x The X coordinate of the upper left pixel location.
|
|
505 |
* @param y The Y coordinate of the upper left pixel location.
|
|
506 |
* @param w Width of the pixel rectangle.
|
|
507 |
* @param h Height of the pixel rectangle.
|
|
508 |
* @param inData An object reference to an array of type defined by
|
|
509 |
* getTransferType() and length w*h*getNumDataElements()
|
|
510 |
* containing the pixel data to place between x,y and
|
|
511 |
* x+h, y+h.
|
|
512 |
*/
|
|
513 |
public void setDataElements(int x, int y, int w, int h, Object obj) {
|
|
514 |
if ((x < this.minX) || (y < this.minY) ||
|
|
515 |
(x + w > this.maxX) || (y + h > this.maxY)) {
|
|
516 |
throw new ArrayIndexOutOfBoundsException
|
|
517 |
("Coordinate out of bounds!");
|
|
518 |
}
|
|
519 |
byte inData[] = (byte[])obj;
|
|
520 |
int yoff = (y-minY)*scanlineStride + (x-minX);
|
|
521 |
|
|
522 |
for (int c = 0; c < numDataElements; c++) {
|
|
523 |
int off = c;
|
|
524 |
byte[] bank = data[c];
|
|
525 |
int dataOffset = dataOffsets[c];
|
|
526 |
|
|
527 |
int yoff2 = yoff;
|
|
528 |
for (int ystart=0; ystart < h; ystart++, yoff2 += scanlineStride) {
|
|
529 |
int xoff = dataOffset + yoff2;
|
|
530 |
for (int xstart=0; xstart < w; xstart++) {
|
|
531 |
bank[xoff++] = inData[off];
|
|
532 |
off += numDataElements;
|
|
533 |
}
|
|
534 |
}
|
|
535 |
}
|
|
536 |
|
|
537 |
markDirty();
|
|
538 |
}
|
|
539 |
|
|
540 |
/**
|
|
541 |
* Stores a byte array of data elements into the specified rectangular
|
|
542 |
* region.
|
|
543 |
* An ArrayIndexOutOfBounds exception will be thrown at runtime
|
|
544 |
* if the pixel coordinates are out of bounds.
|
|
545 |
* The data elements in the
|
|
546 |
* data array are assumed to be packed. That is, a data element
|
|
547 |
* for the nth band at location (x2, y2) would be found at:
|
|
548 |
* <pre>
|
|
549 |
* inData[((y2-y)*w + (x2-x))*numDataElements + n]
|
|
550 |
* </pre>
|
|
551 |
* @param x The X coordinate of the upper left pixel location.
|
|
552 |
* @param y The Y coordinate of the upper left pixel location.
|
|
553 |
* @param w Width of the pixel rectangle.
|
|
554 |
* @param h Height of the pixel rectangle.
|
|
555 |
* @param band The band to set.
|
|
556 |
* @param inData The data elements to be stored.
|
|
557 |
*/
|
|
558 |
public void putByteData(int x, int y, int w, int h,
|
|
559 |
int band, byte[] inData) {
|
|
560 |
// Bounds check for 'band' will be performed automatically
|
|
561 |
if ((x < this.minX) || (y < this.minY) ||
|
|
562 |
(x + w > this.maxX) || (y + h > this.maxY)) {
|
|
563 |
throw new ArrayIndexOutOfBoundsException
|
|
564 |
("Coordinate out of bounds!");
|
|
565 |
}
|
|
566 |
int yoff = (y-minY)*scanlineStride + (x-minX) + dataOffsets[band];
|
|
567 |
int xoff;
|
|
568 |
int off = 0;
|
|
569 |
int xstart;
|
|
570 |
int ystart;
|
|
571 |
|
|
572 |
if (scanlineStride == w) {
|
|
573 |
System.arraycopy(inData, 0, data[band], yoff, w*h);
|
|
574 |
} else {
|
|
575 |
for (ystart=0; ystart < h; ystart++, yoff += scanlineStride) {
|
|
576 |
System.arraycopy(inData, off, data[band], yoff, w);
|
|
577 |
off += w;
|
|
578 |
}
|
|
579 |
}
|
|
580 |
|
|
581 |
markDirty();
|
|
582 |
}
|
|
583 |
|
|
584 |
/**
|
|
585 |
* Stores a byte array of data elements into the specified rectangular
|
|
586 |
* region.
|
|
587 |
* An ArrayIndexOutOfBounds exception will be thrown at runtime
|
|
588 |
* if the pixel coordinates are out of bounds.
|
|
589 |
* The data elements in the
|
|
590 |
* data array are assumed to be packed. That is, a data element
|
|
591 |
* for the nth band at location (x2, y2) would be found at:
|
|
592 |
* <pre>
|
|
593 |
* inData[((y2-y)*w + (x2-x))*numDataElements + n]
|
|
594 |
* </pre>
|
|
595 |
* @param x The X coordinate of the upper left pixel location.
|
|
596 |
* @param y The Y coordinate of the upper left pixel location.
|
|
597 |
* @param w Width of the pixel rectangle.
|
|
598 |
* @param h Height of the pixel rectangle.
|
|
599 |
* @param inData The data elements to be stored.
|
|
600 |
*/
|
|
601 |
public void putByteData(int x, int y, int w, int h, byte[] inData) {
|
|
602 |
if ((x < this.minX) || (y < this.minY) ||
|
|
603 |
(x + w > this.maxX) || (y + h > this.maxY)) {
|
|
604 |
throw new ArrayIndexOutOfBoundsException
|
|
605 |
("Coordinate out of bounds!");
|
|
606 |
}
|
|
607 |
int yoff = (y-minY)*scanlineStride + (x-minX);
|
|
608 |
|
|
609 |
for (int c = 0; c < numDataElements; c++) {
|
|
610 |
int off = c;
|
|
611 |
byte[] bank = data[c];
|
|
612 |
int dataOffset = dataOffsets[c];
|
|
613 |
|
|
614 |
int yoff2 = yoff;
|
|
615 |
for (int ystart=0; ystart < h; ystart++, yoff2 += scanlineStride) {
|
|
616 |
int xoff = dataOffset + yoff2;
|
|
617 |
for (int xstart=0; xstart < w; xstart++) {
|
|
618 |
bank[xoff++] = inData[off];
|
|
619 |
off += numDataElements;
|
|
620 |
}
|
|
621 |
}
|
|
622 |
}
|
|
623 |
|
|
624 |
markDirty();
|
|
625 |
}
|
|
626 |
|
|
627 |
/**
|
|
628 |
* Creates a Writable subraster given a region of the raster. The x and y
|
|
629 |
* coordinates specify the horizontal and vertical offsets
|
|
630 |
* from the upper-left corner of this raster to the upper-left corner
|
|
631 |
* of the subraster. A subset of the bands of the parent Raster may
|
|
632 |
* be specified. If this is null, then all the bands are present in the
|
|
633 |
* subRaster. A translation to the subRaster may also be specified.
|
|
634 |
* Note that the subraster will reference the same
|
|
635 |
* DataBuffers as the parent raster, but using different offsets.
|
|
636 |
* @param x X offset.
|
|
637 |
* @param y Y offset.
|
|
638 |
* @param width Width of the subraster.
|
|
639 |
* @param height Height of the subraster.
|
|
640 |
* @param x0 Translated X origin of the subraster.
|
|
641 |
* @param y0 Translated Y origin of the subraster.
|
|
642 |
* @param bandList Array of band indices.
|
|
643 |
* @exception RasterFormatException
|
|
644 |
* if the specified bounding box is outside of the parent raster.
|
|
645 |
*/
|
|
646 |
public WritableRaster createWritableChild (int x, int y,
|
|
647 |
int width, int height,
|
|
648 |
int x0, int y0,
|
|
649 |
int bandList[]) {
|
|
650 |
|
|
651 |
if (x < this.minX) {
|
|
652 |
throw new RasterFormatException("x lies outside raster");
|
|
653 |
}
|
|
654 |
if (y < this.minY) {
|
|
655 |
throw new RasterFormatException("y lies outside raster");
|
|
656 |
}
|
|
657 |
if ((x+width < x) || (x+width > this.width + this.minX)) {
|
|
658 |
throw new RasterFormatException("(x + width) is outside raster") ;
|
|
659 |
}
|
|
660 |
if ((y+height < y) || (y+height > this.height + this.minY)) {
|
|
661 |
throw new RasterFormatException("(y + height) is outside raster");
|
|
662 |
}
|
|
663 |
|
|
664 |
SampleModel sm;
|
|
665 |
|
|
666 |
if (bandList != null)
|
|
667 |
sm = sampleModel.createSubsetSampleModel(bandList);
|
|
668 |
else
|
|
669 |
sm = sampleModel;
|
|
670 |
|
|
671 |
int deltaX = x0 - x;
|
|
672 |
int deltaY = y0 - y;
|
|
673 |
|
|
674 |
return new ByteBandedRaster(sm,
|
|
675 |
dataBuffer,
|
|
676 |
new Rectangle(x0,y0,width,height),
|
|
677 |
new Point(sampleModelTranslateX+deltaX,
|
|
678 |
sampleModelTranslateY+deltaY),
|
|
679 |
this);
|
|
680 |
}
|
|
681 |
|
|
682 |
/**
|
|
683 |
* Creates a subraster given a region of the raster. The x and y
|
|
684 |
* coordinates specify the horizontal and vertical offsets
|
|
685 |
* from the upper-left corner of this raster to the upper-left corner
|
|
686 |
* of the subraster. A subset of the bands of the parent Raster may
|
|
687 |
* be specified. If this is null, then all the bands are present in the
|
|
688 |
* subRaster. A translation to the subRaster may also be specified.
|
|
689 |
* Note that the subraster will reference the same
|
|
690 |
* DataBuffers as the parent raster, but using different offsets.
|
|
691 |
* @param x X offset.
|
|
692 |
* @param y Y offset.
|
|
693 |
* @param width Width (in pixels) of the subraster.
|
|
694 |
* @param height Height (in pixels) of the subraster.
|
|
695 |
* @param x0 Translated X origin of the subraster.
|
|
696 |
* @param y0 Translated Y origin of the subraster.
|
|
697 |
* @param bandList Array of band indices.
|
|
698 |
* @exception RasterFormatException
|
|
699 |
* if the specified bounding box is outside of the parent raster.
|
|
700 |
*/
|
|
701 |
public Raster createChild (int x, int y,
|
|
702 |
int width, int height,
|
|
703 |
int x0, int y0,
|
|
704 |
int bandList[]) {
|
|
705 |
return createWritableChild(x, y, width, height, x0, y0, bandList);
|
|
706 |
}
|
|
707 |
|
|
708 |
/**
|
|
709 |
* Creates a Raster with the same layout but using a different
|
|
710 |
* width and height, and with new zeroed data arrays.
|
|
711 |
*/
|
|
712 |
public WritableRaster createCompatibleWritableRaster(int w, int h) {
|
|
713 |
if (w <= 0 || h <=0) {
|
|
714 |
throw new RasterFormatException("negative "+
|
|
715 |
((w <= 0) ? "width" : "height"));
|
|
716 |
}
|
|
717 |
|
|
718 |
SampleModel sm = sampleModel.createCompatibleSampleModel(w,h);
|
|
719 |
|
|
720 |
return new ByteBandedRaster(sm, new Point(0,0));
|
|
721 |
}
|
|
722 |
|
|
723 |
/**
|
|
724 |
* Creates a Raster with the same layout and the same
|
|
725 |
* width and height, and with new zeroed data arrays. If
|
|
726 |
* the Raster is a subRaster, this will call
|
|
727 |
* createCompatibleRaster(width, height).
|
|
728 |
*/
|
|
729 |
public WritableRaster createCompatibleWritableRaster() {
|
|
730 |
return createCompatibleWritableRaster(width, height);
|
|
731 |
}
|
|
732 |
|
|
733 |
/**
|
|
734 |
* Verify that the layout parameters are consistent with
|
|
735 |
* the data. If strictCheck
|
|
736 |
* is false, this method will check for ArrayIndexOutOfBounds conditions. If
|
|
737 |
* strictCheck is true, this method will check for additional error
|
|
738 |
* conditions such as line wraparound (width of a line greater than
|
|
739 |
* the scanline stride).
|
|
740 |
* @return String Error string, if the layout is incompatible with
|
|
741 |
* the data. Otherwise returns null.
|
|
742 |
*/
|
|
743 |
private void verify (boolean strictCheck) {
|
|
744 |
// Make sure data for Raster is in a legal range
|
|
745 |
for (int i=0; i < dataOffsets.length; i++) {
|
|
746 |
if (dataOffsets[i] < 0) {
|
|
747 |
throw new RasterFormatException("Data offsets for band "+i+
|
|
748 |
"("+dataOffsets[i]+
|
|
749 |
") must be >= 0");
|
|
750 |
}
|
|
751 |
}
|
|
752 |
|
|
753 |
int maxSize = 0;
|
|
754 |
int size;
|
|
755 |
|
|
756 |
for (int i=0; i < numDataElements; i++) {
|
|
757 |
size = (height-1)*scanlineStride + (width-1) + dataOffsets[i];
|
|
758 |
if (size > maxSize) {
|
|
759 |
maxSize = size;
|
|
760 |
}
|
|
761 |
}
|
|
762 |
|
|
763 |
if (data.length == 1) {
|
|
764 |
if (data[0].length < maxSize*numDataElements) {
|
|
765 |
throw new RasterFormatException("Data array too small "+
|
|
766 |
"(it is "+data[0].length+
|
|
767 |
" and should be "+
|
|
768 |
(maxSize*numDataElements)+
|
|
769 |
" )");
|
|
770 |
}
|
|
771 |
}
|
|
772 |
else {
|
|
773 |
for (int i=0; i < numDataElements; i++) {
|
|
774 |
if (data[i].length < maxSize) {
|
|
775 |
throw new RasterFormatException("Data array too small "+
|
|
776 |
"(it is "+data[i].length+
|
|
777 |
" and should be "+
|
|
778 |
maxSize+" )");
|
|
779 |
}
|
|
780 |
}
|
|
781 |
}
|
|
782 |
}
|
|
783 |
|
|
784 |
public String toString() {
|
|
785 |
return new String ("ByteBandedRaster: width = "+width+" height = "
|
|
786 |
+ height
|
|
787 |
+" #bands "+numDataElements
|
|
788 |
+" minX = "+minX+" minY = "+minY);
|
|
789 |
}
|
|
790 |
|
|
791 |
}
|