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830 lines
33 KiB
Java
830 lines
33 KiB
Java
/*
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* Copyright (c) 1997, 2021, Oracle and/or its affiliates. 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. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* 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.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, Point origin) {
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this(sampleModel,
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(DataBufferByte) 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 DataBufferByte 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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DataBufferByte 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(),
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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 DataBufferByte 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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DataBufferByte dataBuffer,
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Rectangle aRegion,
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Point origin,
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ByteBandedRaster parent)
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{
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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 (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 = dataBuffer.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(dataBuffer, 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();
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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 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 band 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 obj 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 w Width of the pixel rectangle.
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* @param h Height of the pixel rectangle.
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* @param obj 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 w Width of the pixel rectangle.
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* @param h 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 w Width of the pixel rectangle.
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* @param h 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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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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* Stores the data elements for all bands at the specified 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 obj An object reference to an array of type defined by
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* getTransferType() and length getNumDataElements()
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* containing the pixel data to place at x,y.
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*/
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public void setDataElements(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[] inData = (byte[])obj;
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int off = (y-minY)*scanlineStride + (x-minX);
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for (int i = 0; i < numDataElements; i++) {
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data[i][dataOffsets[i] + off] = inData[i];
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}
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markDirty();
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}
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/**
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* Stores the Raster data at the specified 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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* @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 inRaster Raster of data to place at x,y location.
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*/
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public void setDataElements(int x, int y, Raster inRaster) {
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int dstOffX = inRaster.getMinX() + x;
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int dstOffY = inRaster.getMinY() + y;
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int width = inRaster.getWidth();
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int height = inRaster.getHeight();
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if ((dstOffX < this.minX) || (dstOffY < this.minY) ||
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(dstOffX + width > this.maxX) || (dstOffY + height > 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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setDataElements(dstOffX, dstOffY, width, height, inRaster);
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}
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/**
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* Stores the Raster data at the specified location.
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* @param dstX The absolute X coordinate of the destination pixel
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* that will receive a copy of the upper-left pixel of the
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* inRaster
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* @param dstY The absolute Y coordinate of the destination pixel
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* that will receive a copy of the upper-left pixel of the
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* inRaster
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* @param width The number of pixels to store horizontally
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* @param height The number of pixels to store vertically
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* @param inRaster Raster of data to place at x,y location.
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*/
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private void setDataElements(int dstX, int dstY,
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int width, int height,
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Raster inRaster) {
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// Assume bounds checking has been performed previously
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if (width <= 0 || height <= 0) {
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return;
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}
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int srcOffX = inRaster.getMinX();
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int srcOffY = inRaster.getMinY();
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Object tdata = null;
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// // REMIND: Do something faster!
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// if (inRaster instanceof ByteBandedRaster) {
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// }
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for (int startY=0; startY < height; startY++) {
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// Grab one scanline at a time
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tdata = inRaster.getDataElements(srcOffX, srcOffY+startY,
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width, 1, tdata);
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setDataElements(dstX, dstY+startY, width, 1, tdata);
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}
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}
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/**
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* Stores an array of data elements into 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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* 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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* The data elements in the
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* data array are assumed to be packed. That is, a data element
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* for the nth band at location (x2, y2) would be found at:
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* <pre>
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* inData[((y2-y)*w + (x2-x))*numDataElements + n]
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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 w Width of the pixel rectangle.
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* @param h Height of the pixel rectangle.
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* @param obj An object reference to an array of type defined by
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* getTransferType() and length w*h*getNumDataElements()
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* containing the pixel data to place between x,y and
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* x+h, y+h.
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*/
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public void setDataElements(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[] inData = (byte[])obj;
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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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bank[xoff++] = inData[off];
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off += numDataElements;
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}
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}
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}
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markDirty();
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}
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/**
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* Stores a byte array of data elements into 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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* The data elements in the
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* data array are assumed to be packed. That is, a data element
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* for the nth band at location (x2, y2) would be found at:
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* <pre>
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* inData[((y2-y)*w + (x2-x))*numDataElements + n]
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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 w Width of the pixel rectangle.
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* @param h Height of the pixel rectangle.
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* @param band The band to set.
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* @param inData The data elements to be stored.
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*/
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public void putByteData(int x, int y, int w, int h,
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int band, byte[] inData) {
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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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int yoff = (y-minY)*scanlineStride + (x-minX) + dataOffsets[band];
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int xoff;
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int off = 0;
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int xstart;
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int ystart;
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if (scanlineStride == w) {
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System.arraycopy(inData, 0, data[band], yoff, w*h);
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} else {
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for (ystart=0; ystart < h; ystart++, yoff += scanlineStride) {
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System.arraycopy(inData, off, data[band], yoff, w);
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off += w;
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}
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}
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markDirty();
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}
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/**
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* Stores a byte array of data elements into 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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* The data elements in the
|
|
* data array are assumed to be packed. That is, a data element
|
|
* for the nth band at location (x2, y2) would be found at:
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* <pre>
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* inData[((y2-y)*w + (x2-x))*numDataElements + n]
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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 w Width of the pixel rectangle.
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* @param h Height of the pixel rectangle.
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* @param inData The data elements to be stored.
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*/
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public void putByteData(int x, int y, int w, int h, byte[] inData) {
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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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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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bank[xoff++] = inData[off];
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off += numDataElements;
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}
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}
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}
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markDirty();
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}
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/**
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* Creates a Writable subraster given a region of the raster. The x and y
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* coordinates specify the horizontal and vertical offsets
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* from the upper-left corner of this raster to the upper-left corner
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* of the subraster. A subset of the bands of the parent Raster may
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* be specified. If this is null, then all the bands are present in the
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* subRaster. A translation to the subRaster may also be specified.
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* Note that the subraster will reference the same
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* DataBuffers as the parent raster, but using different offsets.
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* @param x X offset.
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* @param y Y offset.
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* @param width Width of the subraster.
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* @param height Height of the subraster.
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* @param x0 Translated X origin of the subraster.
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* @param y0 Translated Y origin of the subraster.
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* @param bandList Array of band indices.
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* @throws RasterFormatException
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* if the specified bounding box is outside of the parent raster.
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*/
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public WritableRaster createWritableChild (int x, int y,
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int width, int height,
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int x0, int y0,
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int[] bandList) {
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if (x < this.minX) {
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throw new RasterFormatException("x lies outside raster");
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}
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if (y < this.minY) {
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throw new RasterFormatException("y lies outside raster");
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}
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if ((x+width < x) || (x+width > this.width + this.minX)) {
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throw new RasterFormatException("(x + width) is outside raster") ;
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}
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if ((y+height < y) || (y+height > this.height + this.minY)) {
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throw new RasterFormatException("(y + height) is outside raster");
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}
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SampleModel sm;
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if (bandList != null)
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sm = sampleModel.createSubsetSampleModel(bandList);
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else
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sm = sampleModel;
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int deltaX = x0 - x;
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int deltaY = y0 - y;
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return new ByteBandedRaster(sm,
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(DataBufferByte) dataBuffer,
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new Rectangle(x0,y0,width,height),
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new Point(sampleModelTranslateX+deltaX,
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sampleModelTranslateY+deltaY),
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this);
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}
|
|
|
|
/**
|
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* Creates a subraster given a region of the raster. The x and y
|
|
* coordinates specify the horizontal and vertical offsets
|
|
* from the upper-left corner of this raster to the upper-left corner
|
|
* of the subraster. A subset of the bands of the parent Raster may
|
|
* be specified. If this is null, then all the bands are present in the
|
|
* subRaster. A translation to the subRaster may also be specified.
|
|
* Note that the subraster will reference the same
|
|
* DataBuffers as the parent raster, but using different offsets.
|
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* @param x X offset.
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* @param y Y offset.
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* @param width Width (in pixels) of the subraster.
|
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* @param height Height (in pixels) of the subraster.
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* @param x0 Translated X origin of the subraster.
|
|
* @param y0 Translated Y origin of the subraster.
|
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* @param bandList Array of band indices.
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* @throws RasterFormatException
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* if the specified bounding box is outside of the parent raster.
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*/
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public Raster createChild (int x, int y,
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int width, int height,
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int x0, int y0,
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int[] bandList) {
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return createWritableChild(x, y, width, height, x0, y0, bandList);
|
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}
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/**
|
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* Creates a Raster with the same layout but using a different
|
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* width and height, and with new zeroed data arrays.
|
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*/
|
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public WritableRaster createCompatibleWritableRaster(int w, int h) {
|
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if (w <= 0 || h <=0) {
|
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throw new RasterFormatException("negative "+
|
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((w <= 0) ? "width" : "height"));
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}
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SampleModel sm = sampleModel.createCompatibleSampleModel(w,h);
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return new ByteBandedRaster(sm, new Point(0,0));
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}
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|
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/**
|
|
* Creates a Raster with the same layout and the same
|
|
* width and height, and with new zeroed data arrays. If
|
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* the Raster is a subRaster, this will call
|
|
* createCompatibleRaster(width, height).
|
|
*/
|
|
public WritableRaster createCompatibleWritableRaster() {
|
|
return createCompatibleWritableRaster(width, height);
|
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}
|
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|
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/**
|
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* Verify that the layout parameters are consistent with the data.
|
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* Verifies whether the data buffer has enough data for the raster,
|
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* taking into account offsets, after ensuring all offsets are >=0.
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* @throws RasterFormatException if a problem is detected.
|
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*/
|
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private void verify() {
|
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|
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/* Need to re-verify the dimensions since a sample model may be
|
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* specified to the constructor
|
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*/
|
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if (width <= 0 || height <= 0 ||
|
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height > (Integer.MAX_VALUE / width))
|
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{
|
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throw new RasterFormatException("Invalid raster dimension");
|
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}
|
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|
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if (scanlineStride < 0 ||
|
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scanlineStride > (Integer.MAX_VALUE / height))
|
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{
|
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// integer overflow
|
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throw new RasterFormatException("Incorrect scanline stride: "
|
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+ scanlineStride);
|
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}
|
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|
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if ((long)minX - sampleModelTranslateX < 0 ||
|
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(long)minY - sampleModelTranslateY < 0) {
|
|
|
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throw new RasterFormatException("Incorrect origin/translate: (" +
|
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minX + ", " + minY + ") / (" +
|
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sampleModelTranslateX + ", " + sampleModelTranslateY + ")");
|
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}
|
|
|
|
|
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if (height > 1 || minY - sampleModelTranslateY > 0) {
|
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// buffer should contain at least one scanline
|
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for (int i = 0; i < data.length; i++) {
|
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if (scanlineStride > data[i].length) {
|
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throw new RasterFormatException("Incorrect scanline stride: "
|
|
+ scanlineStride);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Make sure data for Raster is in a legal range
|
|
for (int i=0; i < dataOffsets.length; i++) {
|
|
if (dataOffsets[i] < 0) {
|
|
throw new RasterFormatException("Data offsets for band "+i+
|
|
"("+dataOffsets[i]+
|
|
") must be >= 0");
|
|
}
|
|
}
|
|
|
|
int lastScanOffset = (height - 1) * scanlineStride;
|
|
|
|
if ((width - 1) > (Integer.MAX_VALUE - lastScanOffset)) {
|
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throw new RasterFormatException("Invalid raster dimension");
|
|
}
|
|
int lastPixelOffset = lastScanOffset + (width-1);
|
|
|
|
int maxIndex = 0;
|
|
int index;
|
|
|
|
for (int i=0; i < numDataElements; i++) {
|
|
if (dataOffsets[i] > (Integer.MAX_VALUE - lastPixelOffset)) {
|
|
throw new RasterFormatException("Invalid raster dimension");
|
|
}
|
|
index = lastPixelOffset + dataOffsets[i];
|
|
if (index > maxIndex) {
|
|
maxIndex = index;
|
|
}
|
|
}
|
|
|
|
if (data.length == 1) {
|
|
if (data[0].length <= maxIndex*numDataElements) {
|
|
throw new RasterFormatException("Data array too small "+
|
|
"(it is "+data[0].length+
|
|
" and should be > "+
|
|
(maxIndex*numDataElements)+
|
|
" )");
|
|
}
|
|
}
|
|
else {
|
|
for (int i=0; i < numDataElements; i++) {
|
|
if (data[i].length <= maxIndex) {
|
|
throw new RasterFormatException("Data array too small "+
|
|
"(it is "+data[i].length+
|
|
" and should be > "+
|
|
maxIndex+" )");
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
public String toString() {
|
|
return "ByteBandedRaster: width = " + width
|
|
+ " height = " + height
|
|
+ " #bands " + numDataElements
|
|
+ " minX = " + minX
|
|
+ " minY = " + minY;
|
|
}
|
|
|
|
}
|