| /* |
| * Copyright (c) 1997, 2008, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* **************************************************************** |
| ****************************************************************** |
| ****************************************************************** |
| *** COPYRIGHT (c) Eastman Kodak Company, 1997 |
| *** As an unpublished work pursuant to Title 17 of the United |
| *** States Code. All rights reserved. |
| ****************************************************************** |
| ****************************************************************** |
| ******************************************************************/ |
| |
| |
| package java.awt.image; |
| import java.awt.Rectangle; |
| import java.awt.Point; |
| |
| import sun.awt.image.ByteInterleavedRaster; |
| import sun.awt.image.ShortInterleavedRaster; |
| import sun.awt.image.IntegerInterleavedRaster; |
| import sun.awt.image.ByteBandedRaster; |
| import sun.awt.image.ShortBandedRaster; |
| import sun.awt.image.BytePackedRaster; |
| import sun.awt.image.SunWritableRaster; |
| |
| /** |
| * A class representing a rectangular array of pixels. A Raster |
| * encapsulates a DataBuffer that stores the sample values and a |
| * SampleModel that describes how to locate a given sample value in a |
| * DataBuffer. |
| * <p> |
| * A Raster defines values for pixels occupying a particular |
| * rectangular area of the plane, not necessarily including (0, 0). |
| * The rectangle, known as the Raster's bounding rectangle and |
| * available by means of the getBounds method, is defined by minX, |
| * minY, width, and height values. The minX and minY values define |
| * the coordinate of the upper left corner of the Raster. References |
| * to pixels outside of the bounding rectangle may result in an |
| * exception being thrown, or may result in references to unintended |
| * elements of the Raster's associated DataBuffer. It is the user's |
| * responsibility to avoid accessing such pixels. |
| * <p> |
| * A SampleModel describes how samples of a Raster |
| * are stored in the primitive array elements of a DataBuffer. |
| * Samples may be stored one per data element, as in a |
| * PixelInterleavedSampleModel or BandedSampleModel, or packed several to |
| * an element, as in a SinglePixelPackedSampleModel or |
| * MultiPixelPackedSampleModel. The SampleModel is also |
| * controls whether samples are sign extended, allowing unsigned |
| * data to be stored in signed Java data types such as byte, short, and |
| * int. |
| * <p> |
| * Although a Raster may live anywhere in the plane, a SampleModel |
| * makes use of a simple coordinate system that starts at (0, 0). A |
| * Raster therefore contains a translation factor that allows pixel |
| * locations to be mapped between the Raster's coordinate system and |
| * that of the SampleModel. The translation from the SampleModel |
| * coordinate system to that of the Raster may be obtained by the |
| * getSampleModelTranslateX and getSampleModelTranslateY methods. |
| * <p> |
| * A Raster may share a DataBuffer with another Raster either by |
| * explicit construction or by the use of the createChild and |
| * createTranslatedChild methods. Rasters created by these methods |
| * can return a reference to the Raster they were created from by |
| * means of the getParent method. For a Raster that was not |
| * constructed by means of a call to createTranslatedChild or |
| * createChild, getParent will return null. |
| * <p> |
| * The createTranslatedChild method returns a new Raster that |
| * shares all of the data of the current Raster, but occupies a |
| * bounding rectangle of the same width and height but with a |
| * different starting point. For example, if the parent Raster |
| * occupied the region (10, 10) to (100, 100), and the translated |
| * Raster was defined to start at (50, 50), then pixel (20, 20) of the |
| * parent and pixel (60, 60) of the child occupy the same location in |
| * the DataBuffer shared by the two Rasters. In the first case, (-10, |
| * -10) should be added to a pixel coordinate to obtain the |
| * corresponding SampleModel coordinate, and in the second case (-50, |
| * -50) should be added. |
| * <p> |
| * The translation between a parent and child Raster may be |
| * determined by subtracting the child's sampleModelTranslateX and |
| * sampleModelTranslateY values from those of the parent. |
| * <p> |
| * The createChild method may be used to create a new Raster |
| * occupying only a subset of its parent's bounding rectangle |
| * (with the same or a translated coordinate system) or |
| * with a subset of the bands of its parent. |
| * <p> |
| * All constructors are protected. The correct way to create a |
| * Raster is to use one of the static create methods defined in this |
| * class. These methods create instances of Raster that use the |
| * standard Interleaved, Banded, and Packed SampleModels and that may |
| * be processed more efficiently than a Raster created by combining |
| * an externally generated SampleModel and DataBuffer. |
| * @see java.awt.image.DataBuffer |
| * @see java.awt.image.SampleModel |
| * @see java.awt.image.PixelInterleavedSampleModel |
| * @see java.awt.image.BandedSampleModel |
| * @see java.awt.image.SinglePixelPackedSampleModel |
| * @see java.awt.image.MultiPixelPackedSampleModel |
| */ |
| public class Raster { |
| |
| /** |
| * The SampleModel that describes how pixels from this Raster |
| * are stored in the DataBuffer. |
| */ |
| protected SampleModel sampleModel; |
| |
| /** The DataBuffer that stores the image data. */ |
| protected DataBuffer dataBuffer; |
| |
| /** The X coordinate of the upper-left pixel of this Raster. */ |
| protected int minX; |
| |
| /** The Y coordinate of the upper-left pixel of this Raster. */ |
| protected int minY; |
| |
| /** The width of this Raster. */ |
| protected int width; |
| |
| /** The height of this Raster. */ |
| protected int height; |
| |
| /** |
| * The X translation from the coordinate space of the |
| * Raster's SampleModel to that of the Raster. |
| */ |
| protected int sampleModelTranslateX; |
| |
| /** |
| * The Y translation from the coordinate space of the |
| * Raster's SampleModel to that of the Raster. |
| */ |
| protected int sampleModelTranslateY; |
| |
| /** The number of bands in the Raster. */ |
| protected int numBands; |
| |
| /** The number of DataBuffer data elements per pixel. */ |
| protected int numDataElements; |
| |
| /** The parent of this Raster, or null. */ |
| protected Raster parent; |
| |
| static private native void initIDs(); |
| static { |
| ColorModel.loadLibraries(); |
| initIDs(); |
| } |
| |
| /** |
| * Creates a Raster based on a PixelInterleavedSampleModel with the |
| * specified data type, width, height, and number of bands. |
| * |
| * <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> 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(). |
| * <p> The only dataTypes supported currently are TYPE_BYTE |
| * and TYPE_USHORT. |
| * @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 location the upper-left corner of the <code>Raster</code> |
| * @return a WritableRaster object with the specified data type, |
| * width, height and number of bands. |
| * @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 |
| */ |
| public static WritableRaster createInterleavedRaster(int dataType, |
| int w, int h, |
| int bands, |
| Point location) { |
| int[] bandOffsets = new int[bands]; |
| for (int i = 0; i < bands; i++) { |
| bandOffsets[i] = i; |
| } |
| return createInterleavedRaster(dataType, w, h, w*bands, bands, |
| bandOffsets, location); |
| } |
| |
| /** |
| * Creates a Raster based on a PixelInterleavedSampleModel with the |
| * specified data type, width, height, scanline stride, pixel |
| * stride, and band offsets. The number of bands is inferred from |
| * bandOffsets.length. |
| * |
| * <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> 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(). |
| * <p> The only dataTypes supported currently are TYPE_BYTE |
| * and TYPE_USHORT. |
| * @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 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 data type, |
| * 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>, or |
| * <code>DataBuffer.TYPE_USHORT</code>. |
| */ |
| public static WritableRaster createInterleavedRaster(int dataType, |
| int w, int h, |
| int scanlineStride, |
| int pixelStride, |
| int bandOffsets[], |
| Point location) { |
| DataBuffer d; |
| |
| int size = scanlineStride * (h - 1) + // fisrt (h - 1) scans |
| pixelStride * w; // last scan |
| |
| switch(dataType) { |
| case DataBuffer.TYPE_BYTE: |
| d = new DataBufferByte(size); |
| break; |
| |
| case DataBuffer.TYPE_USHORT: |
| d = new DataBufferUShort(size); |
| break; |
| |
| default: |
| throw new IllegalArgumentException("Unsupported data type " + |
| dataType); |
| } |
| |
| return createInterleavedRaster(d, w, h, scanlineStride, |
| pixelStride, bandOffsets, location); |
| } |
| |
| /** |
| * Creates a Raster based on a BandedSampleModel with the |
| * specified data type, width, height, and number of bands. |
| * |
| * <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 location the upper-left corner of the <code>Raster</code> |
| * @return a WritableRaster object with the specified data type, |
| * width, height and number of bands. |
| * @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 ArrayIndexOutOfBoundsException if <code>bands</code> |
| * is less than 1 |
| */ |
| public static WritableRaster createBandedRaster(int dataType, |
| int w, int h, |
| int bands, |
| Point location) { |
| if (bands < 1) { |
| throw new ArrayIndexOutOfBoundsException("Number of bands ("+ |
| bands+") must"+ |
| " be greater than 0"); |
| } |
| int[] bankIndices = new int[bands]; |
| int[] bandOffsets = new int[bands]; |
| for (int i = 0; i < bands; i++) { |
| bankIndices[i] = i; |
| bandOffsets[i] = 0; |
| } |
| |
| return createBandedRaster(dataType, w, h, w, |
| bankIndices, bandOffsets, |
| location); |
| } |
| |
| /** |
| * Creates a Raster based on a BandedSampleModel with the |
| * specified data type, 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. |
| * |
| * <p> The upper left corner of the Raster is given by the |
| * location argument. 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 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 data type, |
| * 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 ArrayIndexOutOfBoundsException if <code>bankIndices</code> |
| * or <code>bandOffsets</code> is <code>null</code> |
| */ |
| public static WritableRaster createBandedRaster(int dataType, |
| int w, int h, |
| int scanlineStride, |
| int bankIndices[], |
| int bandOffsets[], |
| Point location) { |
| DataBuffer d; |
| int bands = bandOffsets.length; |
| |
| if (bankIndices == null) { |
| throw new |
| ArrayIndexOutOfBoundsException("Bank indices array is null"); |
| } |
| if (bandOffsets == null) { |
| throw new |
| ArrayIndexOutOfBoundsException("Band offsets array is null"); |
| } |
| |
| // Figure out the #banks and the largest band offset |
| int maxBank = bankIndices[0]; |
| int maxBandOff = bandOffsets[0]; |
| for (int i = 1; i < bands; i++) { |
| if (bankIndices[i] > maxBank) { |
| maxBank = bankIndices[i]; |
| } |
| if (bandOffsets[i] > maxBandOff) { |
| maxBandOff = bandOffsets[i]; |
| } |
| } |
| int banks = maxBank + 1; |
| int size = maxBandOff + |
| scanlineStride * (h - 1) + // fisrt (h - 1) scans |
| w; // last scan |
| |
| switch(dataType) { |
| case DataBuffer.TYPE_BYTE: |
| d = new DataBufferByte(size, banks); |
| break; |
| |
| case DataBuffer.TYPE_USHORT: |
| d = new DataBufferUShort(size, banks); |
| break; |
| |
| case DataBuffer.TYPE_INT: |
| d = new DataBufferInt(size, banks); |
| break; |
| |
| default: |
| throw new IllegalArgumentException("Unsupported data type " + |
| dataType); |
| } |
| |
| return createBandedRaster(d, w, h, scanlineStride, |
| bankIndices, bandOffsets, location); |
| } |
| |
| /** |
| * Creates a Raster based on a SinglePixelPackedSampleModel with |
| * the specified data type, width, height, and band masks. |
| * The number of bands is inferred from bandMasks.length. |
| * |
| * <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 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 data type, |
| * 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> |
| */ |
| public static WritableRaster createPackedRaster(int dataType, |
| int w, int h, |
| int bandMasks[], |
| Point location) { |
| DataBuffer d; |
| |
| switch(dataType) { |
| case DataBuffer.TYPE_BYTE: |
| d = new DataBufferByte(w*h); |
| break; |
| |
| case DataBuffer.TYPE_USHORT: |
| d = new DataBufferUShort(w*h); |
| break; |
| |
| case DataBuffer.TYPE_INT: |
| d = new DataBufferInt(w*h); |
| break; |
| |
| default: |
| throw new IllegalArgumentException("Unsupported data type " + |
| dataType); |
| } |
| |
| return createPackedRaster(d, w, h, w, bandMasks, location); |
| } |
| |
| /** |
| * 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); |
| } |
| |
| } |
