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1775 lines
77 KiB
1775 lines
77 KiB
/*
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* Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
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* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*/
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/* ****************************************************************
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******************************************************************
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******************************************************************
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*** COPYRIGHT (c) Eastman Kodak Company, 1997
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*** As an unpublished work pursuant to Title 17 of the United
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*** States Code. All rights reserved.
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******************************************************************
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******************************************************************
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******************************************************************/
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package java.awt.image;
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import java.awt.Rectangle;
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import java.awt.Point;
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import sun.awt.image.ByteInterleavedRaster;
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import sun.awt.image.ShortInterleavedRaster;
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import sun.awt.image.IntegerInterleavedRaster;
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import sun.awt.image.ByteBandedRaster;
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import sun.awt.image.ShortBandedRaster;
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import sun.awt.image.BytePackedRaster;
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import sun.awt.image.SunWritableRaster;
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/**
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* A class representing a rectangular array of pixels. A Raster
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* encapsulates a DataBuffer that stores the sample values and a
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* SampleModel that describes how to locate a given sample value in a
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* DataBuffer.
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* <p>
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* A Raster defines values for pixels occupying a particular
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* rectangular area of the plane, not necessarily including (0, 0).
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* The rectangle, known as the Raster's bounding rectangle and
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* available by means of the getBounds method, is defined by minX,
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* minY, width, and height values. The minX and minY values define
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* the coordinate of the upper left corner of the Raster. References
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* to pixels outside of the bounding rectangle may result in an
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* exception being thrown, or may result in references to unintended
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* elements of the Raster's associated DataBuffer. It is the user's
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* responsibility to avoid accessing such pixels.
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* <p>
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* A SampleModel describes how samples of a Raster
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* are stored in the primitive array elements of a DataBuffer.
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* Samples may be stored one per data element, as in a
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* PixelInterleavedSampleModel or BandedSampleModel, or packed several to
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* an element, as in a SinglePixelPackedSampleModel or
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* MultiPixelPackedSampleModel. The SampleModel is also
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* controls whether samples are sign extended, allowing unsigned
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* data to be stored in signed Java data types such as byte, short, and
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* int.
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* <p>
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* Although a Raster may live anywhere in the plane, a SampleModel
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* makes use of a simple coordinate system that starts at (0, 0). A
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* Raster therefore contains a translation factor that allows pixel
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* locations to be mapped between the Raster's coordinate system and
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* that of the SampleModel. The translation from the SampleModel
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* coordinate system to that of the Raster may be obtained by the
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* getSampleModelTranslateX and getSampleModelTranslateY methods.
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* <p>
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* A Raster may share a DataBuffer with another Raster either by
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* explicit construction or by the use of the createChild and
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* createTranslatedChild methods. Rasters created by these methods
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* can return a reference to the Raster they were created from by
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* means of the getParent method. For a Raster that was not
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* constructed by means of a call to createTranslatedChild or
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* createChild, getParent will return null.
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* <p>
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* The createTranslatedChild method returns a new Raster that
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* shares all of the data of the current Raster, but occupies a
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* bounding rectangle of the same width and height but with a
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* different starting point. For example, if the parent Raster
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* occupied the region (10, 10) to (100, 100), and the translated
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* Raster was defined to start at (50, 50), then pixel (20, 20) of the
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* parent and pixel (60, 60) of the child occupy the same location in
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* the DataBuffer shared by the two Rasters. In the first case, (-10,
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* -10) should be added to a pixel coordinate to obtain the
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* corresponding SampleModel coordinate, and in the second case (-50,
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* -50) should be added.
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* <p>
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* The translation between a parent and child Raster may be
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* determined by subtracting the child's sampleModelTranslateX and
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* sampleModelTranslateY values from those of the parent.
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* <p>
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* The createChild method may be used to create a new Raster
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* occupying only a subset of its parent's bounding rectangle
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* (with the same or a translated coordinate system) or
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* with a subset of the bands of its parent.
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* <p>
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* All constructors are protected. The correct way to create a
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* Raster is to use one of the static create methods defined in this
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* class. These methods create instances of Raster that use the
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* standard Interleaved, Banded, and Packed SampleModels and that may
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* be processed more efficiently than a Raster created by combining
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* an externally generated SampleModel and DataBuffer.
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* @see java.awt.image.DataBuffer
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* @see java.awt.image.SampleModel
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* @see java.awt.image.PixelInterleavedSampleModel
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* @see java.awt.image.BandedSampleModel
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* @see java.awt.image.SinglePixelPackedSampleModel
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* @see java.awt.image.MultiPixelPackedSampleModel
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*/
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public class Raster {
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/**
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* The SampleModel that describes how pixels from this Raster
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* are stored in the DataBuffer.
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*/
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protected SampleModel sampleModel;
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/** The DataBuffer that stores the image data. */
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protected DataBuffer dataBuffer;
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/** The X coordinate of the upper-left pixel of this Raster. */
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protected int minX;
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/** The Y coordinate of the upper-left pixel of this Raster. */
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protected int minY;
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/** The width of this Raster. */
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protected int width;
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/** The height of this Raster. */
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protected int height;
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/**
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* The X translation from the coordinate space of the
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* Raster's SampleModel to that of the Raster.
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*/
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protected int sampleModelTranslateX;
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/**
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* The Y translation from the coordinate space of the
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* Raster's SampleModel to that of the Raster.
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*/
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protected int sampleModelTranslateY;
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/** The number of bands in the Raster. */
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protected int numBands;
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/** The number of DataBuffer data elements per pixel. */
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protected int numDataElements;
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/** The parent of this Raster, or null. */
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protected Raster parent;
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static private native void initIDs();
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static {
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ColorModel.loadLibraries();
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initIDs();
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}
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/**
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* Creates a Raster based on a PixelInterleavedSampleModel with the
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* specified data type, width, height, and number of bands.
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*
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* <p> The upper left corner of the Raster is given by the
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* location argument. If location is null, (0, 0) will be used.
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* The dataType parameter should be one of the enumerated values
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* defined in the DataBuffer class.
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*
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* <p> Note that interleaved <code>DataBuffer.TYPE_INT</code>
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* Rasters are not supported. To create a 1-band Raster of type
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* <code>DataBuffer.TYPE_INT</code>, use
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* Raster.createPackedRaster().
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* <p> The only dataTypes supported currently are TYPE_BYTE
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* and TYPE_USHORT.
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* @param dataType the data type for storing samples
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* @param w the width in pixels of the image data
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* @param h the height in pixels of the image data
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* @param bands the number of bands
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* @param location the upper-left corner of the <code>Raster</code>
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* @return a WritableRaster object with the specified data type,
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* width, height and number of bands.
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* @throws RasterFormatException if <code>w</code> or <code>h</code>
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* is less than or equal to zero, or computing either
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* <code>location.x + w</code> or
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* <code>location.y + h</code> results in integer
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* overflow
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*/
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public static WritableRaster createInterleavedRaster(int dataType,
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int w, int h,
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int bands,
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Point location) {
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int[] bandOffsets = new int[bands];
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for (int i = 0; i < bands; i++) {
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bandOffsets[i] = i;
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}
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return createInterleavedRaster(dataType, w, h, w*bands, bands,
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bandOffsets, location);
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}
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/**
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* Creates a Raster based on a PixelInterleavedSampleModel with the
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* specified data type, width, height, scanline stride, pixel
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* stride, and band offsets. The number of bands is inferred from
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* bandOffsets.length.
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*
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* <p> The upper left corner of the Raster is given by the
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* location argument. If location is null, (0, 0) will be used.
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* The dataType parameter should be one of the enumerated values
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* defined in the DataBuffer class.
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*
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* <p> Note that interleaved <code>DataBuffer.TYPE_INT</code>
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* Rasters are not supported. To create a 1-band Raster of type
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* <code>DataBuffer.TYPE_INT</code>, use
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* Raster.createPackedRaster().
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* <p> The only dataTypes supported currently are TYPE_BYTE
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* and TYPE_USHORT.
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* @param dataType the data type for storing samples
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* @param w the width in pixels of the image data
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* @param h the height in pixels of the image data
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* @param scanlineStride the line stride of the image data
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* @param pixelStride the pixel stride of the image data
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* @param bandOffsets the offsets of all bands
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* @param location the upper-left corner of the <code>Raster</code>
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* @return a WritableRaster object with the specified data type,
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* width, height, scanline stride, pixel stride and band
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* offsets.
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* @throws RasterFormatException if <code>w</code> or <code>h</code>
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* is less than or equal to zero, or computing either
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* <code>location.x + w</code> or
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* <code>location.y + h</code> results in integer
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* overflow
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* @throws IllegalArgumentException if <code>dataType</code> is not
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* one of the supported data types, which are
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* <code>DataBuffer.TYPE_BYTE</code>, or
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* <code>DataBuffer.TYPE_USHORT</code>.
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*/
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public static WritableRaster createInterleavedRaster(int dataType,
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int w, int h,
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int scanlineStride,
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int pixelStride,
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int bandOffsets[],
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Point location) {
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DataBuffer d;
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int size = scanlineStride * (h - 1) + // fisrt (h - 1) scans
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pixelStride * w; // last scan
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switch(dataType) {
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case DataBuffer.TYPE_BYTE:
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d = new DataBufferByte(size);
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break;
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case DataBuffer.TYPE_USHORT:
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d = new DataBufferUShort(size);
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break;
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default:
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throw new IllegalArgumentException("Unsupported data type " +
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dataType);
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}
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return createInterleavedRaster(d, w, h, scanlineStride,
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pixelStride, bandOffsets, location);
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}
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/**
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* Creates a Raster based on a BandedSampleModel with the
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* specified data type, width, height, and number of bands.
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*
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* <p> The upper left corner of the Raster is given by the
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* location argument. If location is null, (0, 0) will be used.
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* The dataType parameter should be one of the enumerated values
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* defined in the DataBuffer class.
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*
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* <p> The only dataTypes supported currently are TYPE_BYTE, TYPE_USHORT,
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* and TYPE_INT.
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* @param dataType the data type for storing samples
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* @param w the width in pixels of the image data
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* @param h the height in pixels of the image data
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* @param bands the number of bands
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* @param location the upper-left corner of the <code>Raster</code>
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* @return a WritableRaster object with the specified data type,
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* width, height and number of bands.
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* @throws RasterFormatException if <code>w</code> or <code>h</code>
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* is less than or equal to zero, or computing either
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* <code>location.x + w</code> or
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* <code>location.y + h</code> results in integer
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* overflow
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* @throws ArrayIndexOutOfBoundsException if <code>bands</code>
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* is less than 1
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*/
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public static WritableRaster createBandedRaster(int dataType,
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int w, int h,
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int bands,
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Point location) {
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if (bands < 1) {
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throw new ArrayIndexOutOfBoundsException("Number of bands ("+
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bands+") must"+
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" be greater than 0");
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}
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int[] bankIndices = new int[bands];
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int[] bandOffsets = new int[bands];
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for (int i = 0; i < bands; i++) {
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bankIndices[i] = i;
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bandOffsets[i] = 0;
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}
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return createBandedRaster(dataType, w, h, w,
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bankIndices, bandOffsets,
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location);
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}
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/**
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* Creates a Raster based on a BandedSampleModel with the
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* specified data type, width, height, scanline stride, bank
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* indices and band offsets. The number of bands is inferred from
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* bankIndices.length and bandOffsets.length, which must be the
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* same.
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*
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* <p> The upper left corner of the Raster is given by the
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* location argument. The dataType parameter should be one of the
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* enumerated values defined in the DataBuffer class.
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*
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* <p> The only dataTypes supported currently are TYPE_BYTE, TYPE_USHORT,
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* and TYPE_INT.
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* @param dataType the data type for storing samples
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* @param w the width in pixels of the image data
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* @param h the height in pixels of the image data
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* @param scanlineStride the line stride of the image data
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* @param bankIndices the bank indices for each band
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* @param bandOffsets the offsets of all bands
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* @param location the upper-left corner of the <code>Raster</code>
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* @return a WritableRaster object with the specified data type,
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* width, height, scanline stride, bank indices and band
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* offsets.
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* @throws RasterFormatException if <code>w</code> or <code>h</code>
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* is less than or equal to zero, or computing either
|
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* <code>location.x + w</code> or
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* <code>location.y + h</code> results in integer
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* overflow
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* @throws IllegalArgumentException if <code>dataType</code> is not
|
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* one of the supported data types, which are
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* <code>DataBuffer.TYPE_BYTE</code>,
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* <code>DataBuffer.TYPE_USHORT</code>
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* or <code>DataBuffer.TYPE_INT</code>
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* @throws ArrayIndexOutOfBoundsException if <code>bankIndices</code>
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* or <code>bandOffsets</code> is <code>null</code>
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*/
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public static WritableRaster createBandedRaster(int dataType,
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int w, int h,
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int scanlineStride,
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int bankIndices[],
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int bandOffsets[],
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Point location) {
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DataBuffer d;
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int bands = bandOffsets.length;
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if (bankIndices == null) {
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throw new
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ArrayIndexOutOfBoundsException("Bank indices array is null");
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}
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if (bandOffsets == null) {
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throw new
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ArrayIndexOutOfBoundsException("Band offsets array is null");
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}
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// Figure out the #banks and the largest band offset
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int maxBank = bankIndices[0];
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int maxBandOff = bandOffsets[0];
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for (int i = 1; i < bands; i++) {
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if (bankIndices[i] > maxBank) {
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maxBank = bankIndices[i];
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}
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if (bandOffsets[i] > maxBandOff) {
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maxBandOff = bandOffsets[i];
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}
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}
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int banks = maxBank + 1;
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int size = maxBandOff +
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scanlineStride * (h - 1) + // fisrt (h - 1) scans
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w; // last scan
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switch(dataType) {
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case DataBuffer.TYPE_BYTE:
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d = new DataBufferByte(size, banks);
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break;
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case DataBuffer.TYPE_USHORT:
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d = new DataBufferUShort(size, banks);
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break;
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case DataBuffer.TYPE_INT:
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d = new DataBufferInt(size, banks);
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break;
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default:
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throw new IllegalArgumentException("Unsupported data type " +
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dataType);
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}
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return createBandedRaster(d, w, h, scanlineStride,
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bankIndices, bandOffsets, location);
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}
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/**
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* Creates a Raster based on a SinglePixelPackedSampleModel with
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* the specified data type, width, height, and band masks.
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* The number of bands is inferred from bandMasks.length.
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*
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|
* <p> The upper left corner of the Raster is given by the
|
|
* location argument. If location is null, (0, 0) will be used.
|
|
* The dataType parameter should be one of the enumerated values
|
|
* defined in the DataBuffer class.
|
|
*
|
|
* <p> The only dataTypes supported currently are TYPE_BYTE, TYPE_USHORT,
|
|
* and TYPE_INT.
|
|
* @param dataType the data type for storing samples
|
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* @param w the width in pixels of the image data
|
|
* @param h the height in pixels of the image data
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* @param bandMasks an array containing an entry for each band
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* @param location the upper-left corner of the <code>Raster</code>
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* @return a WritableRaster object with the specified data type,
|
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* width, height, and band masks.
|
|
* @throws RasterFormatException if <code>w</code> or <code>h</code>
|
|
* is less than or equal to zero, or computing either
|
|
* <code>location.x + w</code> or
|
|
* <code>location.y + h</code> results in integer
|
|
* overflow
|
|
* @throws IllegalArgumentException if <code>dataType</code> is not
|
|
* one of the supported data types, which are
|
|
* <code>DataBuffer.TYPE_BYTE</code>,
|
|
* <code>DataBuffer.TYPE_USHORT</code>
|
|
* or <code>DataBuffer.TYPE_INT</code>
|
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*/
|
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public static WritableRaster createPackedRaster(int dataType,
|
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int w, int h,
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int bandMasks[],
|
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Point location) {
|
|
DataBuffer d;
|
|
|
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switch(dataType) {
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case DataBuffer.TYPE_BYTE:
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d = new DataBufferByte(w*h);
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break;
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|
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case DataBuffer.TYPE_USHORT:
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d = new DataBufferUShort(w*h);
|
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break;
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|
|
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case DataBuffer.TYPE_INT:
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d = new DataBufferInt(w*h);
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break;
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default:
|
|
throw new IllegalArgumentException("Unsupported data type " +
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dataType);
|
|
}
|
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|
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return createPackedRaster(d, w, h, w, bandMasks, location);
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|
}
|
|
|
|
/**
|
|
* Creates a Raster based on a packed SampleModel with the
|
|
* specified data type, width, height, number of bands, and bits
|
|
* per band. If the number of bands is one, the SampleModel will
|
|
* be a MultiPixelPackedSampleModel.
|
|
*
|
|
* <p> If the number of bands is more than one, the SampleModel
|
|
* will be a SinglePixelPackedSampleModel, with each band having
|
|
* bitsPerBand bits. In either case, the requirements on dataType
|
|
* and bitsPerBand imposed by the corresponding SampleModel must
|
|
* be met.
|
|
*
|
|
* <p> The upper left corner of the Raster is given by the
|
|
* location argument. If location is null, (0, 0) will be used.
|
|
* The dataType parameter should be one of the enumerated values
|
|
* defined in the DataBuffer class.
|
|
*
|
|
* <p> The only dataTypes supported currently are TYPE_BYTE, TYPE_USHORT,
|
|
* and TYPE_INT.
|
|
* @param dataType the data type for storing samples
|
|
* @param w the width in pixels of the image data
|
|
* @param h the height in pixels of the image data
|
|
* @param bands the number of bands
|
|
* @param bitsPerBand the number of bits per band
|
|
* @param location the upper-left corner of the <code>Raster</code>
|
|
* @return a WritableRaster object with the specified data type,
|
|
* width, height, number of bands, and bits per band.
|
|
* @throws RasterFormatException if <code>w</code> or <code>h</code>
|
|
* is less than or equal to zero, or computing either
|
|
* <code>location.x + w</code> or
|
|
* <code>location.y + h</code> results in integer
|
|
* overflow
|
|
* @throws IllegalArgumentException if the product of
|
|
* <code>bitsPerBand</code> and <code>bands</code> is
|
|
* greater than the number of bits held by
|
|
* <code>dataType</code>
|
|
* @throws IllegalArgumentException if <code>bitsPerBand</code> or
|
|
* <code>bands</code> is not greater than zero
|
|
* @throws IllegalArgumentException if <code>dataType</code> is not
|
|
* one of the supported data types, which are
|
|
* <code>DataBuffer.TYPE_BYTE</code>,
|
|
* <code>DataBuffer.TYPE_USHORT</code>
|
|
* or <code>DataBuffer.TYPE_INT</code>
|
|
*/
|
|
public static WritableRaster createPackedRaster(int dataType,
|
|
int w, int h,
|
|
int bands,
|
|
int bitsPerBand,
|
|
Point location) {
|
|
DataBuffer d;
|
|
|
|
if (bands <= 0) {
|
|
throw new IllegalArgumentException("Number of bands ("+bands+
|
|
") must be greater than 0");
|
|
}
|
|
|
|
if (bitsPerBand <= 0) {
|
|
throw new IllegalArgumentException("Bits per band ("+bitsPerBand+
|
|
") must be greater than 0");
|
|
}
|
|
|
|
if (bands != 1) {
|
|
int[] masks = new int[bands];
|
|
int mask = (1 << bitsPerBand) - 1;
|
|
int shift = (bands-1)*bitsPerBand;
|
|
|
|
/* Make sure the total mask size will fit in the data type */
|
|
if (shift+bitsPerBand > DataBuffer.getDataTypeSize(dataType)) {
|
|
throw new IllegalArgumentException("bitsPerBand("+
|
|
bitsPerBand+") * bands is "+
|
|
" greater than data type "+
|
|
"size.");
|
|
}
|
|
switch(dataType) {
|
|
case DataBuffer.TYPE_BYTE:
|
|
case DataBuffer.TYPE_USHORT:
|
|
case DataBuffer.TYPE_INT:
|
|
break;
|
|
default:
|
|
throw new IllegalArgumentException("Unsupported data type " +
|
|
dataType);
|
|
}
|
|
|
|
for (int i = 0; i < bands; i++) {
|
|
masks[i] = mask << shift;
|
|
shift = shift - bitsPerBand;
|
|
}
|
|
|
|
return createPackedRaster(dataType, w, h, masks, location);
|
|
}
|
|
else {
|
|
double fw = w;
|
|
switch(dataType) {
|
|
case DataBuffer.TYPE_BYTE:
|
|
d = new DataBufferByte((int)(Math.ceil(fw/(8/bitsPerBand)))*h);
|
|
break;
|
|
|
|
case DataBuffer.TYPE_USHORT:
|
|
d = new DataBufferUShort((int)(Math.ceil(fw/(16/bitsPerBand)))*h);
|
|
break;
|
|
|
|
case DataBuffer.TYPE_INT:
|
|
d = new DataBufferInt((int)(Math.ceil(fw/(32/bitsPerBand)))*h);
|
|
break;
|
|
|
|
default:
|
|
throw new IllegalArgumentException("Unsupported data type " +
|
|
dataType);
|
|
}
|
|
|
|
return createPackedRaster(d, w, h, bitsPerBand, location);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Creates a Raster based on a PixelInterleavedSampleModel with the
|
|
* specified DataBuffer, width, height, scanline stride, pixel
|
|
* stride, and band offsets. The number of bands is inferred from
|
|
* bandOffsets.length. The upper left corner of the Raster
|
|
* is given by the location argument. If location is null, (0, 0)
|
|
* will be used.
|
|
* <p> Note that interleaved <code>DataBuffer.TYPE_INT</code>
|
|
* Rasters are not supported. To create a 1-band Raster of type
|
|
* <code>DataBuffer.TYPE_INT</code>, use
|
|
* Raster.createPackedRaster().
|
|
* @param dataBuffer the <code>DataBuffer</code> that contains the
|
|
* image data
|
|
* @param w the width in pixels of the image data
|
|
* @param h the height in pixels of the image data
|
|
* @param scanlineStride the line stride of the image data
|
|
* @param pixelStride the pixel stride of the image data
|
|
* @param bandOffsets the offsets of all bands
|
|
* @param location the upper-left corner of the <code>Raster</code>
|
|
* @return a WritableRaster object with the specified
|
|
* <code>DataBuffer</code>, width, height, scanline stride,
|
|
* pixel stride and band offsets.
|
|
* @throws RasterFormatException if <code>w</code> or <code>h</code>
|
|
* is less than or equal to zero, or computing either
|
|
* <code>location.x + w</code> or
|
|
* <code>location.y + h</code> results in integer
|
|
* overflow
|
|
* @throws IllegalArgumentException if <code>dataType</code> is not
|
|
* one of the supported data types, which are
|
|
* <code>DataBuffer.TYPE_BYTE</code>,
|
|
* <code>DataBuffer.TYPE_USHORT</code>
|
|
* @throws RasterFormatException if <code>dataBuffer</code> has more
|
|
* than one bank.
|
|
* @throws NullPointerException if <code>dataBuffer</code> is null
|
|
*/
|
|
public static WritableRaster createInterleavedRaster(DataBuffer dataBuffer,
|
|
int w, int h,
|
|
int scanlineStride,
|
|
int pixelStride,
|
|
int bandOffsets[],
|
|
Point location) {
|
|
if (dataBuffer == null) {
|
|
throw new NullPointerException("DataBuffer cannot be null");
|
|
}
|
|
if (location == null) {
|
|
location = new Point(0, 0);
|
|
}
|
|
int dataType = dataBuffer.getDataType();
|
|
|
|
PixelInterleavedSampleModel csm =
|
|
new PixelInterleavedSampleModel(dataType, w, h,
|
|
pixelStride,
|
|
scanlineStride,
|
|
bandOffsets);
|
|
switch(dataType) {
|
|
case DataBuffer.TYPE_BYTE:
|
|
return new ByteInterleavedRaster(csm, dataBuffer, location);
|
|
|
|
case DataBuffer.TYPE_USHORT:
|
|
return new ShortInterleavedRaster(csm, dataBuffer, location);
|
|
|
|
default:
|
|
throw new IllegalArgumentException("Unsupported data type " +
|
|
dataType);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Creates a Raster based on a BandedSampleModel with the
|
|
* specified DataBuffer, width, height, scanline stride, bank
|
|
* indices, and band offsets. The number of bands is inferred
|
|
* from bankIndices.length and bandOffsets.length, which must be
|
|
* the same. The upper left corner of the Raster is given by the
|
|
* location argument. If location is null, (0, 0) will be used.
|
|
* @param dataBuffer the <code>DataBuffer</code> that contains the
|
|
* image data
|
|
* @param w the width in pixels of the image data
|
|
* @param h the height in pixels of the image data
|
|
* @param scanlineStride the line stride of the image data
|
|
* @param bankIndices the bank indices for each band
|
|
* @param bandOffsets the offsets of all bands
|
|
* @param location the upper-left corner of the <code>Raster</code>
|
|
* @return a WritableRaster object with the specified
|
|
* <code>DataBuffer</code>, width, height, scanline stride,
|
|
* bank indices and band offsets.
|
|
* @throws RasterFormatException if <code>w</code> or <code>h</code>
|
|
* is less than or equal to zero, or computing either
|
|
* <code>location.x + w</code> or
|
|
* <code>location.y + h</code> results in integer
|
|
* overflow
|
|
* @throws IllegalArgumentException if <code>dataType</code> is not
|
|
* one of the supported data types, which are
|
|
* <code>DataBuffer.TYPE_BYTE</code>,
|
|
* <code>DataBuffer.TYPE_USHORT</code>
|
|
* or <code>DataBuffer.TYPE_INT</code>
|
|
* @throws NullPointerException if <code>dataBuffer</code> is null
|
|
*/
|
|
public static WritableRaster createBandedRaster(DataBuffer dataBuffer,
|
|
int w, int h,
|
|
int scanlineStride,
|
|
int bankIndices[],
|
|
int bandOffsets[],
|
|
Point location) {
|
|
if (dataBuffer == null) {
|
|
throw new NullPointerException("DataBuffer cannot be null");
|
|
}
|
|
if (location == null) {
|
|
location = new Point(0,0);
|
|
}
|
|
int dataType = dataBuffer.getDataType();
|
|
|
|
int bands = bankIndices.length;
|
|
if (bandOffsets.length != bands) {
|
|
throw new IllegalArgumentException(
|
|
"bankIndices.length != bandOffsets.length");
|
|
}
|
|
|
|
BandedSampleModel bsm =
|
|
new BandedSampleModel(dataType, w, h,
|
|
scanlineStride,
|
|
bankIndices, bandOffsets);
|
|
|
|
switch(dataType) {
|
|
case DataBuffer.TYPE_BYTE:
|
|
return new ByteBandedRaster(bsm, dataBuffer, location);
|
|
|
|
case DataBuffer.TYPE_USHORT:
|
|
return new ShortBandedRaster(bsm, dataBuffer, location);
|
|
|
|
case DataBuffer.TYPE_INT:
|
|
return new SunWritableRaster(bsm, dataBuffer, location);
|
|
|
|
default:
|
|
throw new IllegalArgumentException("Unsupported data type " +
|
|
dataType);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Creates a Raster based on a SinglePixelPackedSampleModel with
|
|
* the specified DataBuffer, width, height, scanline stride, and
|
|
* band masks. The number of bands is inferred from bandMasks.length.
|
|
* The upper left corner of the Raster is given by
|
|
* the location argument. If location is null, (0, 0) will be used.
|
|
* @param dataBuffer the <code>DataBuffer</code> that contains the
|
|
* image data
|
|
* @param w the width in pixels of the image data
|
|
* @param h the height in pixels of the image data
|
|
* @param scanlineStride the line stride of the image data
|
|
* @param bandMasks an array containing an entry for each band
|
|
* @param location the upper-left corner of the <code>Raster</code>
|
|
* @return a WritableRaster object with the specified
|
|
* <code>DataBuffer</code>, width, height, scanline stride,
|
|
* and band masks.
|
|
* @throws RasterFormatException if <code>w</code> or <code>h</code>
|
|
* is less than or equal to zero, or computing either
|
|
* <code>location.x + w</code> or
|
|
* <code>location.y + h</code> results in integer
|
|
* overflow
|
|
* @throws IllegalArgumentException if <code>dataType</code> is not
|
|
* one of the supported data types, which are
|
|
* <code>DataBuffer.TYPE_BYTE</code>,
|
|
* <code>DataBuffer.TYPE_USHORT</code>
|
|
* or <code>DataBuffer.TYPE_INT</code>
|
|
* @throws RasterFormatException if <code>dataBuffer</code> has more
|
|
* than one bank.
|
|
* @throws NullPointerException if <code>dataBuffer</code> is null
|
|
*/
|
|
public static WritableRaster createPackedRaster(DataBuffer dataBuffer,
|
|
int w, int h,
|
|
int scanlineStride,
|
|
int bandMasks[],
|
|
Point location) {
|
|
if (dataBuffer == null) {
|
|
throw new NullPointerException("DataBuffer cannot be null");
|
|
}
|
|
if (location == null) {
|
|
location = new Point(0,0);
|
|
}
|
|
int dataType = dataBuffer.getDataType();
|
|
|
|
SinglePixelPackedSampleModel sppsm =
|
|
new SinglePixelPackedSampleModel(dataType, w, h, scanlineStride,
|
|
bandMasks);
|
|
|
|
switch(dataType) {
|
|
case DataBuffer.TYPE_BYTE:
|
|
return new ByteInterleavedRaster(sppsm, dataBuffer, location);
|
|
|
|
case DataBuffer.TYPE_USHORT:
|
|
return new ShortInterleavedRaster(sppsm, dataBuffer, location);
|
|
|
|
case DataBuffer.TYPE_INT:
|
|
return new IntegerInterleavedRaster(sppsm, dataBuffer, location);
|
|
|
|
default:
|
|
throw new IllegalArgumentException("Unsupported data type " +
|
|
dataType);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Creates a Raster based on a MultiPixelPackedSampleModel with the
|
|
* specified DataBuffer, width, height, and bits per pixel. The upper
|
|
* left corner of the Raster is given by the location argument. If
|
|
* location is null, (0, 0) will be used.
|
|
* @param dataBuffer the <code>DataBuffer</code> that contains the
|
|
* image data
|
|
* @param w the width in pixels of the image data
|
|
* @param h the height in pixels of the image data
|
|
* @param bitsPerPixel the number of bits for each pixel
|
|
* @param location the upper-left corner of the <code>Raster</code>
|
|
* @return a WritableRaster object with the specified
|
|
* <code>DataBuffer</code>, width, height, and
|
|
* bits per pixel.
|
|
* @throws RasterFormatException if <code>w</code> or <code>h</code>
|
|
* is less than or equal to zero, or computing either
|
|
* <code>location.x + w</code> or
|
|
* <code>location.y + h</code> results in integer
|
|
* overflow
|
|
* @throws IllegalArgumentException if <code>dataType</code> is not
|
|
* one of the supported data types, which are
|
|
* <code>DataBuffer.TYPE_BYTE</code>,
|
|
* <code>DataBuffer.TYPE_USHORT</code>
|
|
* or <code>DataBuffer.TYPE_INT</code>
|
|
* @throws RasterFormatException if <code>dataBuffer</code> has more
|
|
* than one bank.
|
|
* @throws NullPointerException if <code>dataBuffer</code> is null
|
|
*/
|
|
public static WritableRaster createPackedRaster(DataBuffer dataBuffer,
|
|
int w, int h,
|
|
int bitsPerPixel,
|
|
Point location) {
|
|
if (dataBuffer == null) {
|
|
throw new NullPointerException("DataBuffer cannot be null");
|
|
}
|
|
if (location == null) {
|
|
location = new Point(0,0);
|
|
}
|
|
int dataType = dataBuffer.getDataType();
|
|
|
|
if (dataType != DataBuffer.TYPE_BYTE &&
|
|
dataType != DataBuffer.TYPE_USHORT &&
|
|
dataType != DataBuffer.TYPE_INT) {
|
|
throw new IllegalArgumentException("Unsupported data type " +
|
|
dataType);
|
|
}
|
|
|
|
if (dataBuffer.getNumBanks() != 1) {
|
|
throw new
|
|
RasterFormatException("DataBuffer for packed Rasters"+
|
|
" must only have 1 bank.");
|
|
}
|
|
|
|
MultiPixelPackedSampleModel mppsm =
|
|
new MultiPixelPackedSampleModel(dataType, w, h, bitsPerPixel);
|
|
|
|
if (dataType == DataBuffer.TYPE_BYTE &&
|
|
(bitsPerPixel == 1 || bitsPerPixel == 2 || bitsPerPixel == 4)) {
|
|
return new BytePackedRaster(mppsm, dataBuffer, location);
|
|
} else {
|
|
return new SunWritableRaster(mppsm, dataBuffer, location);
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Creates a Raster with the specified SampleModel and DataBuffer.
|
|
* The upper left corner of the Raster is given by the location argument.
|
|
* If location is null, (0, 0) will be used.
|
|
* @param sm the specified <code>SampleModel</code>
|
|
* @param db the specified <code>DataBuffer</code>
|
|
* @param location the upper-left corner of the <code>Raster</code>
|
|
* @return a <code>Raster</code> with the specified
|
|
* <code>SampleModel</code>, <code>DataBuffer</code>, and
|
|
* location.
|
|
* @throws RasterFormatException if computing either
|
|
* <code>location.x + sm.getWidth()</code> or
|
|
* <code>location.y + sm.getHeight()</code> results in integer
|
|
* overflow
|
|
* @throws RasterFormatException if <code>db</code> has more
|
|
* than one bank and <code>sm</code> is a
|
|
* PixelInterleavedSampleModel, SinglePixelPackedSampleModel,
|
|
* or MultiPixelPackedSampleModel.
|
|
* @throws NullPointerException if either SampleModel or DataBuffer is
|
|
* null
|
|
*/
|
|
public static Raster createRaster(SampleModel sm,
|
|
DataBuffer db,
|
|
Point location) {
|
|
if ((sm == null) || (db == null)) {
|
|
throw new NullPointerException("SampleModel and DataBuffer cannot be null");
|
|
}
|
|
|
|
if (location == null) {
|
|
location = new Point(0,0);
|
|
}
|
|
int dataType = sm.getDataType();
|
|
|
|
if (sm instanceof PixelInterleavedSampleModel) {
|
|
switch(dataType) {
|
|
case DataBuffer.TYPE_BYTE:
|
|
return new ByteInterleavedRaster(sm, db, location);
|
|
|
|
case DataBuffer.TYPE_USHORT:
|
|
return new ShortInterleavedRaster(sm, db, location);
|
|
}
|
|
} else if (sm instanceof SinglePixelPackedSampleModel) {
|
|
switch(dataType) {
|
|
case DataBuffer.TYPE_BYTE:
|
|
return new ByteInterleavedRaster(sm, db, location);
|
|
|
|
case DataBuffer.TYPE_USHORT:
|
|
return new ShortInterleavedRaster(sm, db, location);
|
|
|
|
case DataBuffer.TYPE_INT:
|
|
return new IntegerInterleavedRaster(sm, db, location);
|
|
}
|
|
} else if (sm instanceof MultiPixelPackedSampleModel &&
|
|
dataType == DataBuffer.TYPE_BYTE &&
|
|
sm.getSampleSize(0) < 8) {
|
|
return new BytePackedRaster(sm, db, location);
|
|
}
|
|
|
|
// we couldn't do anything special - do the generic thing
|
|
|
|
return new Raster(sm,db,location);
|
|
}
|
|
|
|
/**
|
|
* Creates a WritableRaster with the specified SampleModel.
|
|
* The upper left corner of the Raster is given by the location argument.
|
|
* If location is null, (0, 0) will be used.
|
|
* @param sm the specified <code>SampleModel</code>
|
|
* @param location the upper-left corner of the
|
|
* <code>WritableRaster</code>
|
|
* @return a <code>WritableRaster</code> with the specified
|
|
* <code>SampleModel</code> and location.
|
|
* @throws RasterFormatException if computing either
|
|
* <code>location.x + sm.getWidth()</code> or
|
|
* <code>location.y + sm.getHeight()</code> results in integer
|
|
* overflow
|
|
*/
|
|
public static WritableRaster createWritableRaster(SampleModel sm,
|
|
Point location) {
|
|
if (location == null) {
|
|
location = new Point(0,0);
|
|
}
|
|
|
|
return createWritableRaster(sm, sm.createDataBuffer(), location);
|
|
}
|
|
|
|
/**
|
|
* Creates a WritableRaster with the specified SampleModel and DataBuffer.
|
|
* The upper left corner of the Raster is given by the location argument.
|
|
* If location is null, (0, 0) will be used.
|
|
* @param sm the specified <code>SampleModel</code>
|
|
* @param db the specified <code>DataBuffer</code>
|
|
* @param location the upper-left corner of the
|
|
* <code>WritableRaster</code>
|
|
* @return a <code>WritableRaster</code> with the specified
|
|
* <code>SampleModel</code>, <code>DataBuffer</code>, and
|
|
* location.
|
|
* @throws RasterFormatException if computing either
|
|
* <code>location.x + sm.getWidth()</code> or
|
|
* <code>location.y + sm.getHeight()</code> results in integer
|
|
* overflow
|
|
* @throws RasterFormatException if <code>db</code> has more
|
|
* than one bank and <code>sm</code> is a
|
|
* PixelInterleavedSampleModel, SinglePixelPackedSampleModel,
|
|
* or MultiPixelPackedSampleModel.
|
|
* @throws NullPointerException if either SampleModel or DataBuffer is null
|
|
*/
|
|
public static WritableRaster createWritableRaster(SampleModel sm,
|
|
DataBuffer db,
|
|
Point location) {
|
|
if ((sm == null) || (db == null)) {
|
|
throw new NullPointerException("SampleModel and DataBuffer cannot be null");
|
|
}
|
|
if (location == null) {
|
|
location = new Point(0,0);
|
|
}
|
|
|
|
int dataType = sm.getDataType();
|
|
|
|
if (sm instanceof PixelInterleavedSampleModel) {
|
|
switch(dataType) {
|
|
case DataBuffer.TYPE_BYTE:
|
|
return new ByteInterleavedRaster(sm, db, location);
|
|
|
|
case DataBuffer.TYPE_USHORT:
|
|
return new ShortInterleavedRaster(sm, db, location);
|
|
}
|
|
} else if (sm instanceof SinglePixelPackedSampleModel) {
|
|
switch(dataType) {
|
|
case DataBuffer.TYPE_BYTE:
|
|
return new ByteInterleavedRaster(sm, db, location);
|
|
|
|
case DataBuffer.TYPE_USHORT:
|
|
return new ShortInterleavedRaster(sm, db, location);
|
|
|
|
case DataBuffer.TYPE_INT:
|
|
return new IntegerInterleavedRaster(sm, db, location);
|
|
}
|
|
} else if (sm instanceof MultiPixelPackedSampleModel &&
|
|
dataType == DataBuffer.TYPE_BYTE &&
|
|
sm.getSampleSize(0) < 8) {
|
|
return new BytePackedRaster(sm, db, location);
|
|
}
|
|
|
|
// we couldn't do anything special - do the generic thing
|
|
|
|
return new SunWritableRaster(sm,db,location);
|
|
}
|
|
|
|
/**
|
|
* Constructs a Raster with the given SampleModel. The Raster's
|
|
* upper left corner is origin and it is the same size as the
|
|
* SampleModel. A DataBuffer large enough to describe the
|
|
* Raster is automatically created.
|
|
* @param sampleModel The SampleModel that specifies the layout
|
|
* @param origin The Point that specified the origin
|
|
* @throws RasterFormatException if computing either
|
|
* <code>origin.x + sampleModel.getWidth()</code> or
|
|
* <code>origin.y + sampleModel.getHeight()</code> results in
|
|
* integer overflow
|
|
* @throws NullPointerException either <code>sampleModel</code> or
|
|
* <code>origin</code> is null
|
|
*/
|
|
protected Raster(SampleModel sampleModel,
|
|
Point origin) {
|
|
this(sampleModel,
|
|
sampleModel.createDataBuffer(),
|
|
new Rectangle(origin.x,
|
|
origin.y,
|
|
sampleModel.getWidth(),
|
|
sampleModel.getHeight()),
|
|
origin,
|
|
null);
|
|
}
|
|
|
|
/**
|
|
* Constructs a Raster with the given SampleModel and DataBuffer.
|
|
* The Raster's upper left corner is origin and it is the same size
|
|
* as the SampleModel. The DataBuffer is not initialized and must
|
|
* be compatible with SampleModel.
|
|
* @param sampleModel The SampleModel that specifies the layout
|
|
* @param dataBuffer The DataBuffer that contains the image data
|
|
* @param origin The Point that specifies the origin
|
|
* @throws RasterFormatException if computing either
|
|
* <code>origin.x + sampleModel.getWidth()</code> or
|
|
* <code>origin.y + sampleModel.getHeight()</code> results in
|
|
* integer overflow
|
|
* @throws NullPointerException either <code>sampleModel</code> or
|
|
* <code>origin</code> is null
|
|
*/
|
|
protected Raster(SampleModel sampleModel,
|
|
DataBuffer dataBuffer,
|
|
Point origin) {
|
|
this(sampleModel,
|
|
dataBuffer,
|
|
new Rectangle(origin.x,
|
|
origin.y,
|
|
sampleModel.getWidth(),
|
|
sampleModel.getHeight()),
|
|
origin,
|
|
null);
|
|
}
|
|
|
|
/**
|
|
* Constructs a Raster with the given SampleModel, DataBuffer, and
|
|
* parent. aRegion specifies the bounding rectangle of the new
|
|
* Raster. When translated into the base Raster's coordinate
|
|
* system, aRegion must be contained by the base Raster.
|
|
* (The base Raster is the Raster's ancestor which has no parent.)
|
|
* sampleModelTranslate specifies the sampleModelTranslateX and
|
|
* sampleModelTranslateY values of the new Raster.
|
|
*
|
|
* Note that this constructor should generally be called by other
|
|
* constructors or create methods, it should not be used directly.
|
|
* @param sampleModel The SampleModel that specifies the layout
|
|
* @param dataBuffer The DataBuffer that contains the image data
|
|
* @param aRegion The Rectangle that specifies the image area
|
|
* @param sampleModelTranslate The Point that specifies the translation
|
|
* from SampleModel to Raster coordinates
|
|
* @param parent The parent (if any) of this raster
|
|
* @throws NullPointerException if any of <code>sampleModel</code>,
|
|
* <code>dataBuffer</code>, <code>aRegion</code> or
|
|
* <code>sampleModelTranslate</code> is null
|
|
* @throws RasterFormatException if <code>aRegion</code> has width
|
|
* or height less than or equal to zero, or computing either
|
|
* <code>aRegion.x + aRegion.width</code> or
|
|
* <code>aRegion.y + aRegion.height</code> results in integer
|
|
* overflow
|
|
*/
|
|
protected Raster(SampleModel sampleModel,
|
|
DataBuffer dataBuffer,
|
|
Rectangle aRegion,
|
|
Point sampleModelTranslate,
|
|
Raster parent) {
|
|
|
|
if ((sampleModel == null) || (dataBuffer == null) ||
|
|
(aRegion == null) || (sampleModelTranslate == null)) {
|
|
throw new NullPointerException("SampleModel, dataBuffer, aRegion and " +
|
|
"sampleModelTranslate cannot be null");
|
|
}
|
|
this.sampleModel = sampleModel;
|
|
this.dataBuffer = dataBuffer;
|
|
minX = aRegion.x;
|
|
minY = aRegion.y;
|
|
width = aRegion.width;
|
|
height = aRegion.height;
|
|
if (width <= 0 || height <= 0) {
|
|
throw new RasterFormatException("negative or zero " +
|
|
((width <= 0) ? "width" : "height"));
|
|
}
|
|
if ((minX + width) < minX) {
|
|
throw new RasterFormatException(
|
|
"overflow condition for X coordinates of Raster");
|
|
}
|
|
if ((minY + height) < minY) {
|
|
throw new RasterFormatException(
|
|
"overflow condition for Y coordinates of Raster");
|
|
}
|
|
|
|
sampleModelTranslateX = sampleModelTranslate.x;
|
|
sampleModelTranslateY = sampleModelTranslate.y;
|
|
|
|
numBands = sampleModel.getNumBands();
|
|
numDataElements = sampleModel.getNumDataElements();
|
|
this.parent = parent;
|
|
}
|
|
|
|
|
|
/**
|
|
* Returns the parent Raster (if any) of this Raster or null.
|
|
* @return the parent Raster or <code>null</code>.
|
|
*/
|
|
public Raster getParent() {
|
|
return parent;
|
|
}
|
|
|
|
/**
|
|
* Returns the X translation from the coordinate system of the
|
|
* SampleModel to that of the Raster. To convert a pixel's X
|
|
* coordinate from the Raster coordinate system to the SampleModel
|
|
* coordinate system, this value must be subtracted.
|
|
* @return the X translation from the coordinate space of the
|
|
* Raster's SampleModel to that of the Raster.
|
|
*/
|
|
final public int getSampleModelTranslateX() {
|
|
return sampleModelTranslateX;
|
|
}
|
|
|
|
/**
|
|
* Returns the Y translation from the coordinate system of the
|
|
* SampleModel to that of the Raster. To convert a pixel's Y
|
|
* coordinate from the Raster coordinate system to the SampleModel
|
|
* coordinate system, this value must be subtracted.
|
|
* @return the Y translation from the coordinate space of the
|
|
* Raster's SampleModel to that of the Raster.
|
|
*/
|
|
final public int getSampleModelTranslateY() {
|
|
return sampleModelTranslateY;
|
|
}
|
|
|
|
/**
|
|
* Create a compatible WritableRaster the same size as this Raster with
|
|
* the same SampleModel and a new initialized DataBuffer.
|
|
* @return a compatible <code>WritableRaster</code> with the same sample
|
|
* model and a new data buffer.
|
|
*/
|
|
public WritableRaster createCompatibleWritableRaster() {
|
|
return new SunWritableRaster(sampleModel, new Point(0,0));
|
|
}
|
|
|
|
/**
|
|
* Create a compatible WritableRaster with the specified size, a new
|
|
* SampleModel, and a new initialized DataBuffer.
|
|
* @param w the specified width of the new <code>WritableRaster</code>
|
|
* @param h the specified height of the new <code>WritableRaster</code>
|
|
* @return a compatible <code>WritableRaster</code> with the specified
|
|
* size and a new sample model and data buffer.
|
|
* @exception RasterFormatException if the width or height is less than
|
|
* or equal to zero.
|
|
*/
|
|
public WritableRaster createCompatibleWritableRaster(int w, int h) {
|
|
if (w <= 0 || h <=0) {
|
|
throw new RasterFormatException("negative " +
|
|
((w <= 0) ? "width" : "height"));
|
|
}
|
|
|
|
SampleModel sm = sampleModel.createCompatibleSampleModel(w,h);
|
|
|
|
return new SunWritableRaster(sm, new Point(0,0));
|
|
}
|
|
|
|
/**
|
|
* Create a compatible WritableRaster with location (minX, minY)
|
|
* and size (width, height) specified by rect, a
|
|
* new SampleModel, and a new initialized DataBuffer.
|
|
* @param rect a <code>Rectangle</code> that specifies the size and
|
|
* location of the <code>WritableRaster</code>
|
|
* @return a compatible <code>WritableRaster</code> with the specified
|
|
* size and location and a new sample model and data buffer.
|
|
* @throws RasterFormatException if <code>rect</code> has width
|
|
* or height less than or equal to zero, or computing either
|
|
* <code>rect.x + rect.width</code> or
|
|
* <code>rect.y + rect.height</code> results in integer
|
|
* overflow
|
|
* @throws NullPointerException if <code>rect</code> is null
|
|
*/
|
|
public WritableRaster createCompatibleWritableRaster(Rectangle rect) {
|
|
if (rect == null) {
|
|
throw new NullPointerException("Rect cannot be null");
|
|
}
|
|
return createCompatibleWritableRaster(rect.x, rect.y,
|
|
rect.width, rect.height);
|
|
}
|
|
|
|
/**
|
|
* Create a compatible WritableRaster with the specified
|
|
* location (minX, minY) and size (width, height), a
|
|
* new SampleModel, and a new initialized DataBuffer.
|
|
* @param x the X coordinate of the upper-left corner of
|
|
* the <code>WritableRaster</code>
|
|
* @param y the Y coordinate of the upper-left corner of
|
|
* the <code>WritableRaster</code>
|
|
* @param w the specified width of the <code>WritableRaster</code>
|
|
* @param h the specified height of the <code>WritableRaster</code>
|
|
* @return a compatible <code>WritableRaster</code> with the specified
|
|
* size and location and a new sample model and data buffer.
|
|
* @throws RasterFormatException if <code>w</code> or <code>h</code>
|
|
* is less than or equal to zero, or computing either
|
|
* <code>x + w</code> or
|
|
* <code>y + h</code> results in integer
|
|
* overflow
|
|
*/
|
|
public WritableRaster createCompatibleWritableRaster(int x, int y,
|
|
int w, int h) {
|
|
WritableRaster ret = createCompatibleWritableRaster(w, h);
|
|
return ret.createWritableChild(0,0,w,h,x,y,null);
|
|
}
|
|
|
|
/**
|
|
* Create a Raster with the same size, SampleModel and DataBuffer
|
|
* as this one, but with a different location. The new Raster
|
|
* will possess a reference to the current Raster, accessible
|
|
* through its getParent() method.
|
|
*
|
|
* @param childMinX the X coordinate of the upper-left
|
|
* corner of the new <code>Raster</code>
|
|
* @param childMinY the Y coordinate of the upper-left
|
|
* corner of the new <code>Raster</code>
|
|
* @return a new <code>Raster</code> with the same size, SampleModel,
|
|
* and DataBuffer as this <code>Raster</code>, but with the
|
|
* specified location.
|
|
* @throws RasterFormatException if computing either
|
|
* <code>childMinX + this.getWidth()</code> or
|
|
* <code>childMinY + this.getHeight()</code> results in integer
|
|
* overflow
|
|
*/
|
|
public Raster createTranslatedChild(int childMinX, int childMinY) {
|
|
return createChild(minX,minY,width,height,
|
|
childMinX,childMinY,null);
|
|
}
|
|
|
|
/**
|
|
* Returns a new Raster which shares all or part of this Raster's
|
|
* DataBuffer. The new Raster will possess a reference to the
|
|
* current Raster, accessible through its getParent() method.
|
|
*
|
|
* <p> The parentX, parentY, width and height parameters
|
|
* form a Rectangle in this Raster's coordinate space,
|
|
* indicating the area of pixels to be shared. An error will
|
|
* be thrown if this Rectangle is not contained with the bounds
|
|
* of the current Raster.
|
|
*
|
|
* <p> The new Raster may additionally be translated to a
|
|
* different coordinate system for the plane than that used by the current
|
|
* Raster. The childMinX and childMinY parameters give the new
|
|
* (x, y) coordinate of the upper-left pixel of the returned
|
|
* Raster; the coordinate (childMinX, childMinY) in the new Raster
|
|
* will map to the same pixel as the coordinate (parentX, parentY)
|
|
* in the current Raster.
|
|
*
|
|
* <p> The new Raster may be defined to contain only a subset of
|
|
* the bands of the current Raster, possibly reordered, by means
|
|
* of the bandList parameter. If bandList is null, it is taken to
|
|
* include all of the bands of the current Raster in their current
|
|
* order.
|
|
*
|
|
* <p> To create a new Raster that contains a subregion of the current
|
|
* Raster, but shares its coordinate system and bands,
|
|
* this method should be called with childMinX equal to parentX,
|
|
* childMinY equal to parentY, and bandList equal to null.
|
|
*
|
|
* @param parentX The X coordinate of the upper-left corner
|
|
* in this Raster's coordinates
|
|
* @param parentY The Y coordinate of the upper-left corner
|
|
* in this Raster's coordinates
|
|
* @param width Width of the region starting at (parentX, parentY)
|
|
* @param height Height of the region starting at (parentX, parentY).
|
|
* @param childMinX The X coordinate of the upper-left corner
|
|
* of the returned Raster
|
|
* @param childMinY The Y coordinate of the upper-left corner
|
|
* of the returned Raster
|
|
* @param bandList Array of band indices, or null to use all bands
|
|
* @return a new <code>Raster</code>.
|
|
* @exception RasterFormatException if the specified subregion is outside
|
|
* of the raster bounds.
|
|
* @throws RasterFormatException if <code>width</code> or
|
|
* <code>height</code>
|
|
* is less than or equal to zero, or computing any of
|
|
* <code>parentX + width</code>, <code>parentY + height</code>,
|
|
* <code>childMinX + width</code>, or
|
|
* <code>childMinY + height</code> results in integer
|
|
* overflow
|
|
*/
|
|
public Raster createChild(int parentX, int parentY,
|
|
int width, int height,
|
|
int childMinX, int childMinY,
|
|
int bandList[]) {
|
|
if (parentX < this.minX) {
|
|
throw new RasterFormatException("parentX lies outside raster");
|
|
}
|
|
if (parentY < this.minY) {
|
|
throw new RasterFormatException("parentY lies outside raster");
|
|
}
|
|
if ((parentX + width < parentX) ||
|
|
(parentX + width > this.width + this.minX)) {
|
|
throw new RasterFormatException("(parentX + width) is outside raster");
|
|
}
|
|
if ((parentY + height < parentY) ||
|
|
(parentY + height > this.height + this.minY)) {
|
|
throw new RasterFormatException("(parentY + height) is outside raster");
|
|
}
|
|
|
|
SampleModel subSampleModel;
|
|
// Note: the SampleModel for the child Raster should have the same
|
|
// width and height as that for the parent, since it represents
|
|
// the physical layout of the pixel data. The child Raster's width
|
|
// and height represent a "virtual" view of the pixel data, so
|
|
// they may be different than those of the SampleModel.
|
|
if (bandList == null) {
|
|
subSampleModel = sampleModel;
|
|
} else {
|
|
subSampleModel = sampleModel.createSubsetSampleModel(bandList);
|
|
}
|
|
|
|
int deltaX = childMinX - parentX;
|
|
int deltaY = childMinY - parentY;
|
|
|
|
return new Raster(subSampleModel, getDataBuffer(),
|
|
new Rectangle(childMinX, childMinY, width, height),
|
|
new Point(sampleModelTranslateX + deltaX,
|
|
sampleModelTranslateY + deltaY), this);
|
|
}
|
|
|
|
/**
|
|
* Returns the bounding Rectangle of this Raster. This function returns
|
|
* the same information as getMinX/MinY/Width/Height.
|
|
* @return the bounding box of this <code>Raster</code>.
|
|
*/
|
|
public Rectangle getBounds() {
|
|
return new Rectangle(minX, minY, width, height);
|
|
}
|
|
|
|
/** Returns the minimum valid X coordinate of the Raster.
|
|
* @return the minimum x coordinate of this <code>Raster</code>.
|
|
*/
|
|
final public int getMinX() {
|
|
return minX;
|
|
}
|
|
|
|
/** Returns the minimum valid Y coordinate of the Raster.
|
|
* @return the minimum y coordinate of this <code>Raster</code>.
|
|
*/
|
|
final public int getMinY() {
|
|
return minY;
|
|
}
|
|
|
|
/** Returns the width in pixels of the Raster.
|
|
* @return the width of this <code>Raster</code>.
|
|
*/
|
|
final public int getWidth() {
|
|
return width;
|
|
}
|
|
|
|
/** Returns the height in pixels of the Raster.
|
|
* @return the height of this <code>Raster</code>.
|
|
*/
|
|
final public int getHeight() {
|
|
return height;
|
|
}
|
|
|
|
/** Returns the number of bands (samples per pixel) in this Raster.
|
|
* @return the number of bands of this <code>Raster</code>.
|
|
*/
|
|
final public int getNumBands() {
|
|
return numBands;
|
|
}
|
|
|
|
/**
|
|
* Returns the number of data elements needed to transfer one pixel
|
|
* via the getDataElements and setDataElements methods. When pixels
|
|
* are transferred via these methods, they may be transferred in a
|
|
* packed or unpacked format, depending on the implementation of the
|
|
* underlying SampleModel. Using these methods, pixels are transferred
|
|
* as an array of getNumDataElements() elements of a primitive type given
|
|
* by getTransferType(). The TransferType may or may not be the same
|
|
* as the storage data type of the DataBuffer.
|
|
* @return the number of data elements.
|
|
*/
|
|
final public int getNumDataElements() {
|
|
return sampleModel.getNumDataElements();
|
|
}
|
|
|
|
/**
|
|
* Returns the TransferType used to transfer pixels via the
|
|
* getDataElements and setDataElements methods. When pixels
|
|
* are transferred via these methods, they may be transferred in a
|
|
* packed or unpacked format, depending on the implementation of the
|
|
* underlying SampleModel. Using these methods, pixels are transferred
|
|
* as an array of getNumDataElements() elements of a primitive type given
|
|
* by getTransferType(). The TransferType may or may not be the same
|
|
* as the storage data type of the DataBuffer. The TransferType will
|
|
* be one of the types defined in DataBuffer.
|
|
* @return this transfer type.
|
|
*/
|
|
final public int getTransferType() {
|
|
return sampleModel.getTransferType();
|
|
}
|
|
|
|
/** Returns the DataBuffer associated with this Raster.
|
|
* @return the <code>DataBuffer</code> of this <code>Raster</code>.
|
|
*/
|
|
public DataBuffer getDataBuffer() {
|
|
return dataBuffer;
|
|
}
|
|
|
|
/** Returns the SampleModel that describes the layout of the image data.
|
|
* @return the <code>SampleModel</code> of this <code>Raster</code>.
|
|
*/
|
|
public SampleModel getSampleModel() {
|
|
return sampleModel;
|
|
}
|
|
|
|
/**
|
|
* Returns data for a single pixel in a primitive array of type
|
|
* TransferType. For image data supported by the Java 2D(tm) API,
|
|
* this will be one of DataBuffer.TYPE_BYTE, DataBuffer.TYPE_USHORT,
|
|
* DataBuffer.TYPE_INT, DataBuffer.TYPE_SHORT, DataBuffer.TYPE_FLOAT,
|
|
* or DataBuffer.TYPE_DOUBLE. Data may be returned in a packed format,
|
|
* thus increasing efficiency for data transfers.
|
|
* An ArrayIndexOutOfBoundsException may be thrown
|
|
* if the coordinates are not in bounds. However, explicit bounds
|
|
* checking is not guaranteed.
|
|
* A ClassCastException will be thrown if the input object is non null
|
|
* and references anything other than an array of TransferType.
|
|
* @see java.awt.image.SampleModel#getDataElements(int, int, Object, DataBuffer)
|
|
* @param x The X coordinate of the pixel location
|
|
* @param y The Y coordinate of the pixel location
|
|
* @param outData An object reference to an array of type defined by
|
|
* getTransferType() and length getNumDataElements().
|
|
* If null, an array of appropriate type and size will be
|
|
* allocated
|
|
* @return An object reference to an array of type defined by
|
|
* getTransferType() with the requested pixel data.
|
|
*
|
|
* @throws ArrayIndexOutOfBoundsException if the coordinates are not
|
|
* in bounds, or if outData is too small to hold the output.
|
|
*/
|
|
public Object getDataElements(int x, int y, Object outData) {
|
|
return sampleModel.getDataElements(x - sampleModelTranslateX,
|
|
y - sampleModelTranslateY,
|
|
outData, dataBuffer);
|
|
}
|
|
|
|
/**
|
|
* Returns the pixel data for the specified rectangle of pixels in a
|
|
* primitive array of type TransferType.
|
|
* For image data supported by the Java 2D API, this
|
|
* will be one of DataBuffer.TYPE_BYTE, DataBuffer.TYPE_USHORT,
|
|
* DataBuffer.TYPE_INT, DataBuffer.TYPE_SHORT, DataBuffer.TYPE_FLOAT,
|
|
* or DataBuffer.TYPE_DOUBLE. Data may be returned in a packed format,
|
|
* thus increasing efficiency for data transfers.
|
|
* An ArrayIndexOutOfBoundsException may be thrown
|
|
* if the coordinates are not in bounds. However, explicit bounds
|
|
* checking is not guaranteed.
|
|
* A ClassCastException will be thrown if the input object is non null
|
|
* and references anything other than an array of TransferType.
|
|
* @see java.awt.image.SampleModel#getDataElements(int, int, int, int, Object, DataBuffer)
|
|
* @param x The X coordinate of the upper-left pixel location
|
|
* @param y The Y coordinate of the upper-left pixel location
|
|
* @param w Width of the pixel rectangle
|
|
* @param h Height of the pixel rectangle
|
|
* @param outData An object reference to an array of type defined by
|
|
* getTransferType() and length w*h*getNumDataElements().
|
|
* If null, an array of appropriate type and size will be
|
|
* allocated.
|
|
* @return An object reference to an array of type defined by
|
|
* getTransferType() with the requested pixel data.
|
|
*
|
|
* @throws ArrayIndexOutOfBoundsException if the coordinates are not
|
|
* in bounds, or if outData is too small to hold the output.
|
|
*/
|
|
public Object getDataElements(int x, int y, int w, int h, Object outData) {
|
|
return sampleModel.getDataElements(x - sampleModelTranslateX,
|
|
y - sampleModelTranslateY,
|
|
w, h, outData, dataBuffer);
|
|
}
|
|
|
|
/**
|
|
* Returns the samples in an array of int for the specified pixel.
|
|
* An ArrayIndexOutOfBoundsException may be thrown
|
|
* if the coordinates are not in bounds. However, explicit bounds
|
|
* checking is not guaranteed.
|
|
* @param x The X coordinate of the pixel location
|
|
* @param y The Y coordinate of the pixel location
|
|
* @param iArray An optionally preallocated int array
|
|
* @return the samples for the specified pixel.
|
|
*
|
|
* @throws ArrayIndexOutOfBoundsException if the coordinates are not
|
|
* in bounds, or if iArray is too small to hold the output.
|
|
*/
|
|
public int[] getPixel(int x, int y, int iArray[]) {
|
|
return sampleModel.getPixel(x - sampleModelTranslateX,
|
|
y - sampleModelTranslateY,
|
|
iArray, dataBuffer);
|
|
}
|
|
|
|
/**
|
|
* Returns the samples in an array of float for the
|
|
* specified pixel.
|
|
* An ArrayIndexOutOfBoundsException may be thrown
|
|
* if the coordinates are not in bounds. However, explicit bounds
|
|
* checking is not guaranteed.
|
|
* @param x The X coordinate of the pixel location
|
|
* @param y The Y coordinate of the pixel location
|
|
* @param fArray An optionally preallocated float array
|
|
* @return the samples for the specified pixel.
|
|
*
|
|
* @throws ArrayIndexOutOfBoundsException if the coordinates are not
|
|
* in bounds, or if fArray is too small to hold the output.
|
|
*/
|
|
public float[] getPixel(int x, int y, float fArray[]) {
|
|
return sampleModel.getPixel(x - sampleModelTranslateX,
|
|
y - sampleModelTranslateY,
|
|
fArray, dataBuffer);
|
|
}
|
|
|
|
/**
|
|
* Returns the samples in an array of double for the specified pixel.
|
|
* An ArrayIndexOutOfBoundsException may be thrown
|
|
* if the coordinates are not in bounds. However, explicit bounds
|
|
* checking is not guaranteed.
|
|
* @param x The X coordinate of the pixel location
|
|
* @param y The Y coordinate of the pixel location
|
|
* @param dArray An optionally preallocated double array
|
|
* @return the samples for the specified pixel.
|
|
*
|
|
* @throws ArrayIndexOutOfBoundsException if the coordinates are not
|
|
* in bounds, or if dArray is too small to hold the output.
|
|
*/
|
|
public double[] getPixel(int x, int y, double dArray[]) {
|
|
return sampleModel.getPixel(x - sampleModelTranslateX,
|
|
y - sampleModelTranslateY,
|
|
dArray, dataBuffer);
|
|
}
|
|
|
|
/**
|
|
* Returns an int array containing all samples for a rectangle of pixels,
|
|
* one sample per array element.
|
|
* An ArrayIndexOutOfBoundsException may be thrown
|
|
* if the coordinates are not in bounds. However, explicit bounds
|
|
* checking is not guaranteed.
|
|
* @param x The X coordinate of the upper-left pixel location
|
|
* @param y The Y coordinate of the upper-left pixel location
|
|
* @param w Width of the pixel rectangle
|
|
* @param h Height of the pixel rectangle
|
|
* @param iArray An optionally pre-allocated int array
|
|
* @return the samples for the specified rectangle of pixels.
|
|
*
|
|
* @throws ArrayIndexOutOfBoundsException if the coordinates are not
|
|
* in bounds, or if iArray is too small to hold the output.
|
|
*/
|
|
public int[] getPixels(int x, int y, int w, int h, int iArray[]) {
|
|
return sampleModel.getPixels(x - sampleModelTranslateX,
|
|
y - sampleModelTranslateY, w, h,
|
|
iArray, dataBuffer);
|
|
}
|
|
|
|
/**
|
|
* Returns a float array containing all samples for a rectangle of pixels,
|
|
* one sample per array element.
|
|
* An ArrayIndexOutOfBoundsException may be thrown
|
|
* if the coordinates are not in bounds. However, explicit bounds
|
|
* checking is not guaranteed.
|
|
* @param x The X coordinate of the pixel location
|
|
* @param y The Y coordinate of the pixel location
|
|
* @param w Width of the pixel rectangle
|
|
* @param h Height of the pixel rectangle
|
|
* @param fArray An optionally pre-allocated float array
|
|
* @return the samples for the specified rectangle of pixels.
|
|
*
|
|
* @throws ArrayIndexOutOfBoundsException if the coordinates are not
|
|
* in bounds, or if fArray is too small to hold the output.
|
|
*/
|
|
public float[] getPixels(int x, int y, int w, int h,
|
|
float fArray[]) {
|
|
return sampleModel.getPixels(x - sampleModelTranslateX,
|
|
y - sampleModelTranslateY, w, h,
|
|
fArray, dataBuffer);
|
|
}
|
|
|
|
/**
|
|
* Returns a double array containing all samples for a rectangle of pixels,
|
|
* one sample per array element.
|
|
* An ArrayIndexOutOfBoundsException may be thrown
|
|
* if the coordinates are not in bounds. However, explicit bounds
|
|
* checking is not guaranteed.
|
|
* @param x The X coordinate of the upper-left pixel location
|
|
* @param y The Y coordinate of the upper-left pixel location
|
|
* @param w Width of the pixel rectangle
|
|
* @param h Height of the pixel rectangle
|
|
* @param dArray An optionally pre-allocated double array
|
|
* @return the samples for the specified rectangle of pixels.
|
|
*
|
|
* @throws ArrayIndexOutOfBoundsException if the coordinates are not
|
|
* in bounds, or if dArray is too small to hold the output.
|
|
*/
|
|
public double[] getPixels(int x, int y, int w, int h,
|
|
double dArray[]) {
|
|
return sampleModel.getPixels(x - sampleModelTranslateX,
|
|
y - sampleModelTranslateY,
|
|
w, h, dArray, dataBuffer);
|
|
}
|
|
|
|
|
|
/**
|
|
* Returns the sample in a specified band for the pixel located
|
|
* at (x,y) as an int.
|
|
* An ArrayIndexOutOfBoundsException may be thrown
|
|
* if the coordinates are not in bounds. However, explicit bounds
|
|
* checking is not guaranteed.
|
|
* @param x The X coordinate of the pixel location
|
|
* @param y The Y coordinate of the pixel location
|
|
* @param b The band to return
|
|
* @return the sample in the specified band for the pixel at the
|
|
* specified coordinate.
|
|
*
|
|
* @throws ArrayIndexOutOfBoundsException if the coordinates or
|
|
* the band index are not in bounds.
|
|
*/
|
|
public int getSample(int x, int y, int b) {
|
|
return sampleModel.getSample(x - sampleModelTranslateX,
|
|
y - sampleModelTranslateY, b,
|
|
dataBuffer);
|
|
}
|
|
|
|
/**
|
|
* Returns the sample in a specified band
|
|
* for the pixel located at (x,y) as a float.
|
|
* An ArrayIndexOutOfBoundsException may be thrown
|
|
* if the coordinates are not in bounds. However, explicit bounds
|
|
* checking is not guaranteed.
|
|
* @param x The X coordinate of the pixel location
|
|
* @param y The Y coordinate of the pixel location
|
|
* @param b The band to return
|
|
* @return the sample in the specified band for the pixel at the
|
|
* specified coordinate.
|
|
*
|
|
* @throws ArrayIndexOutOfBoundsException if the coordinates or
|
|
* the band index are not in bounds.
|
|
*/
|
|
public float getSampleFloat(int x, int y, int b) {
|
|
return sampleModel.getSampleFloat(x - sampleModelTranslateX,
|
|
y - sampleModelTranslateY, b,
|
|
dataBuffer);
|
|
}
|
|
|
|
/**
|
|
* Returns the sample in a specified band
|
|
* for a pixel located at (x,y) as a double.
|
|
* An ArrayIndexOutOfBoundsException may be thrown
|
|
* if the coordinates are not in bounds. However, explicit bounds
|
|
* checking is not guaranteed.
|
|
* @param x The X coordinate of the pixel location
|
|
* @param y The Y coordinate of the pixel location
|
|
* @param b The band to return
|
|
* @return the sample in the specified band for the pixel at the
|
|
* specified coordinate.
|
|
*
|
|
* @throws ArrayIndexOutOfBoundsException if the coordinates or
|
|
* the band index are not in bounds.
|
|
*/
|
|
public double getSampleDouble(int x, int y, int b) {
|
|
return sampleModel.getSampleDouble(x - sampleModelTranslateX,
|
|
y - sampleModelTranslateY,
|
|
b, dataBuffer);
|
|
}
|
|
|
|
/**
|
|
* Returns the samples for a specified band for the specified rectangle
|
|
* of pixels in an int array, one sample per array element.
|
|
* An ArrayIndexOutOfBoundsException may be thrown
|
|
* if the coordinates are not in bounds. However, explicit bounds
|
|
* checking is not guaranteed.
|
|
* @param x The X coordinate of the upper-left pixel location
|
|
* @param y The Y coordinate of the upper-left pixel location
|
|
* @param w Width of the pixel rectangle
|
|
* @param h Height of the pixel rectangle
|
|
* @param b The band to return
|
|
* @param iArray An optionally pre-allocated int array
|
|
* @return the samples for the specified band for the specified
|
|
* rectangle of pixels.
|
|
*
|
|
* @throws ArrayIndexOutOfBoundsException if the coordinates or
|
|
* the band index are not in bounds, or if iArray is too small to
|
|
* hold the output.
|
|
*/
|
|
public int[] getSamples(int x, int y, int w, int h, int b,
|
|
int iArray[]) {
|
|
return sampleModel.getSamples(x - sampleModelTranslateX,
|
|
y - sampleModelTranslateY,
|
|
w, h, b, iArray,
|
|
dataBuffer);
|
|
}
|
|
|
|
/**
|
|
* Returns the samples for a specified band for the specified rectangle
|
|
* of pixels in a float array, one sample per array element.
|
|
* An ArrayIndexOutOfBoundsException may be thrown
|
|
* if the coordinates are not in bounds. However, explicit bounds
|
|
* checking is not guaranteed.
|
|
* @param x The X coordinate of the upper-left pixel location
|
|
* @param y The Y coordinate of the upper-left pixel location
|
|
* @param w Width of the pixel rectangle
|
|
* @param h Height of the pixel rectangle
|
|
* @param b The band to return
|
|
* @param fArray An optionally pre-allocated float array
|
|
* @return the samples for the specified band for the specified
|
|
* rectangle of pixels.
|
|
*
|
|
* @throws ArrayIndexOutOfBoundsException if the coordinates or
|
|
* the band index are not in bounds, or if fArray is too small to
|
|
* hold the output.
|
|
*/
|
|
public float[] getSamples(int x, int y, int w, int h, int b,
|
|
float fArray[]) {
|
|
return sampleModel.getSamples(x - sampleModelTranslateX,
|
|
y - sampleModelTranslateY,
|
|
w, h, b, fArray, dataBuffer);
|
|
}
|
|
|
|
/**
|
|
* Returns the samples for a specified band for a specified rectangle
|
|
* of pixels in a double array, one sample per array element.
|
|
* An ArrayIndexOutOfBoundsException may be thrown
|
|
* if the coordinates are not in bounds. However, explicit bounds
|
|
* checking is not guaranteed.
|
|
* @param x The X coordinate of the upper-left pixel location
|
|
* @param y The Y coordinate of the upper-left pixel location
|
|
* @param w Width of the pixel rectangle
|
|
* @param h Height of the pixel rectangle
|
|
* @param b The band to return
|
|
* @param dArray An optionally pre-allocated double array
|
|
* @return the samples for the specified band for the specified
|
|
* rectangle of pixels.
|
|
*
|
|
* @throws ArrayIndexOutOfBoundsException if the coordinates or
|
|
* the band index are not in bounds, or if dArray is too small to
|
|
* hold the output.
|
|
*/
|
|
public double[] getSamples(int x, int y, int w, int h, int b,
|
|
double dArray[]) {
|
|
return sampleModel.getSamples(x - sampleModelTranslateX,
|
|
y - sampleModelTranslateY,
|
|
w, h, b, dArray, dataBuffer);
|
|
}
|
|
|
|
}
|