/* * Copyright (c) 1997, 2007, 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. */ package sun.awt.image;import java.awt.image.Raster;import java.awt.image.WritableRaster;import java.awt.image.RasterFormatException;import java.awt.image.SampleModel;import java.awt.image.BandedSampleModel;import java.awt.image.DataBuffer;import java.awt.image.DataBufferByte;import java.awt.Rectangle;import java.awt.Point; /** * This class defines a Raster with pixels consisting of multiple * 8-bit samples stored in possibly separate arrays for each band. * Operations on sets of pixels are performed on a given band in the * Raster before moving on to the next band. The arrays used for * storage may be distinct or shared between some or all of the bands. * Each band additionally has an offset that is added to determine the * DataBuffer location of each pixel. * * There is only one scanline stride for all bands. The pixel stride * is always equal to one. This type of raster can be used with a * ComponentColorModel. This class requires a BandedSampleModel. * */public class ByteBandedRaster extends SunWritableRaster { /** Data offsets for each band of image data. */ int[] dataOffsets; /** Scanline stride of the image data contained in this Raster. */ int scanlineStride; /** The image data array. */ byte[][] data; /** A cached copy of minX + width for use in bounds checks. */ private int maxX; /** A cached copy of minY + height for use in bounds checks. */ private int maxY; /** * Constructs a ByteBandedRaster 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. SampleModel * must be of type BandedSampleModel. * @param sampleModel The SampleModel that specifies the layout. * @param origin The Point that specifies the origin. */ public ByteBandedRaster(SampleModel sampleModel, Point origin) { this(sampleModel, sampleModel.createDataBuffer(), new Rectangle(origin.x, origin.y, sampleModel.getWidth(), sampleModel.getHeight()), origin, null); } /** * Constructs a ByteBanded 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 a DataBufferShort compatible with SampleModel. * SampleModel must be of type BandedSampleModel. * @param sampleModel The SampleModel that specifies the layout. * @param dataBuffer The DataBufferShort that contains the image data. * @param origin The Point that specifies the origin. */ public ByteBandedRaster(SampleModel sampleModel, DataBuffer dataBuffer, Point origin) { this(sampleModel, dataBuffer, new Rectangle(origin.x , origin.y, sampleModel.getWidth(), sampleModel.getHeight()), origin, null); } /** * Constructs a ByteBandedRaster with the given sampleModel, * DataBuffer, and parent. DataBuffer must be a DataBufferShort and * SampleModel must be of type BandedSampleModel. * When translated into the base Raster's * coordinate system, aRegion must be contained by the base Raster. * Origin is the coordinate in the new Raster's coordinate system of * the origin of the base Raster. (The base Raster is the Raster's * ancestor which has no parent.) * * 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 DataBufferShort that contains the image data. * @param aRegion The Rectangle that specifies the image area. * @param origin The Point that specifies the origin. * @param parent The parent (if any) of this raster. */ public ByteBandedRaster(SampleModel sampleModel, DataBuffer dataBuffer, Rectangle aRegion, Point origin, ByteBandedRaster parent) { super(sampleModel, dataBuffer, aRegion, origin, parent); this.maxX = minX + width; this.maxY = minY + height; if (!(dataBuffer instanceof DataBufferByte)) { throw new RasterFormatException("ByteBandedRaster must have" + "byte DataBuffers"); } DataBufferByte dbb = (DataBufferByte)dataBuffer; if (sampleModel instanceof BandedSampleModel) { BandedSampleModel bsm = (BandedSampleModel)sampleModel; this.scanlineStride = bsm.getScanlineStride(); int bankIndices[] = bsm.getBankIndices(); int bandOffsets[] = bsm.getBandOffsets(); int dOffsets[] = dbb.getOffsets(); dataOffsets = new int[bankIndices.length]; data = new byte[bankIndices.length][]; int xOffset = aRegion.x - origin.x; int yOffset = aRegion.y - origin.y; for (int i = 0; i < bankIndices.length; i++) { data[i] = stealData(dbb, bankIndices[i]); dataOffsets[i] = dOffsets[bankIndices[i]] + xOffset + yOffset*scanlineStride + bandOffsets[i]; } } else { throw new RasterFormatException("ByteBandedRasters must have"+ "BandedSampleModels"); } verify(false); } /** * Returns a copy of the data offsets array. For each band the data * offset is the index into the band's data array, of the first sample * of the band. */ public int[] getDataOffsets() { return (int[])dataOffsets.clone(); } /** * Returns data offset for the specified band. The data offset * is the index into the band's data array * in which the first sample of the first scanline is stored. * @param The band whose offset is returned. */ public int getDataOffset(int band) { return dataOffsets[band]; } /** * Returns the scanline stride -- the number of data array elements * between a given sample and the sample in the same column * of the next row in the same band. */ public int getScanlineStride() { return scanlineStride; } /** * Returns the pixel stride, which is always equal to one for * a Raster with a BandedSampleModel. */ public int getPixelStride() { return 1; } /** * Returns a reference to the entire data array. */ public byte[][] getDataStorage() { return data; } /** * Returns a reference to the specific band data array. */ public byte[] getDataStorage(int band) { return data[band]; } /** * Returns the data elements for all bands at the specified * location. * An ArrayIndexOutOfBounds exception will be thrown at runtime * if the pixel coordinate is out of bounds. * A ClassCastException will be thrown if the input object is non null * and references anything other than an array of transferType. * @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 request pixel data. */ public Object getDataElements(int x, int y, Object obj) { if ((x < this.minX) || (y < this.minY) || (x >= this.maxX) || (y >= this.maxY)) { throw new ArrayIndexOutOfBoundsException ("Coordinate out of bounds!"); } byte outData[]; if (obj == null) { outData = new byte[numDataElements]; } else { outData = (byte[])obj; } int off = (y-minY)*scanlineStride + (x-minX); for (int band = 0; band < numDataElements; band++) { outData[band] = data[band][dataOffsets[band] + off]; } return outData; } /** * Returns an array of data elements from the specified * rectangular region. * An ArrayIndexOutOfBounds exception will be thrown at runtime * if the pixel coordinates are out of bounds. * A ClassCastException will be thrown if the input object is non null * and references anything other than an array of transferType. * <pre> * byte[] bandData = (byte[])raster.getDataElement(x, y, w, h, null); * int numDataElements = raster.getNumDataElements(); * byte[] pixel = new byte[numDataElements]; * // To find a data element at location (x2, y2) * System.arraycopy(bandData, ((y2-y)*w + (x2-x))*numDataElements, * pixel, 0, numDataElements); * </pre> * @param x The X coordinate of the upper left pixel location. * @param y The Y coordinate of the upper left pixel location. * @param width Width of the pixel rectangle. * @param height 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 request pixel data. */ public Object getDataElements(int x, int y, int w, int h, Object obj) { if ((x < this.minX) || (y < this.minY) || (x + w > this.maxX) || (y + h > this.maxY)) { throw new ArrayIndexOutOfBoundsException ("Coordinate out of bounds!"); } byte outData[]; if (obj == null) { outData = new byte[numDataElements*w*h]; } else { outData = (byte[])obj; } int yoff = (y-minY)*scanlineStride + (x-minX); for (int c = 0; c < numDataElements; c++) { int off = c; byte[] bank = data[c]; int dataOffset = dataOffsets[c]; int yoff2 = yoff; for (int ystart=0; ystart < h; ystart++, yoff2 += scanlineStride) { int xoff = dataOffset + yoff2; for (int xstart=0; xstart < w; xstart++) { outData[off] = bank[xoff++]; off += numDataElements; } } } return outData; } /** * Returns a byte array of data elements from the specified rectangular * region for the specified band. * An ArrayIndexOutOfBounds exception will be thrown at runtime * if the pixel coordinates are out of bounds. * <pre> * byte[] bandData = raster.getByteData(x, y, w, h, null); * // To find the data element at location (x2, y2) * byte bandElement = bandData[((y2-y)*w + (x2-x))]; * </pre> * @param x The X coordinate of the upper left pixel location. * @param y The Y coordinate of the upper left pixel location. * @param width Width of the pixel rectangle. * @param height Height of the pixel rectangle. * @param band The band to return. * @param outData If non-null, data elements for all bands * at the specified location are returned in this array. * @return Data array with data elements for all bands. */ public byte[] getByteData(int x, int y, int w, int h, int band, byte[] outData) { // Bounds check for 'band' will be performed automatically if ((x < this.minX) || (y < this.minY) || (x + w > this.maxX) || (y + h > this.maxY)) { throw new ArrayIndexOutOfBoundsException ("Coordinate out of bounds!"); } if (outData == null) { outData = new byte[scanlineStride*h]; } int yoff = (y-minY)*scanlineStride + (x-minX) + dataOffsets[band]; if (scanlineStride == w) { System.arraycopy(data[band], yoff, outData, 0, w*h); } else { int off = 0; for (int ystart=0; ystart < h; ystart++, yoff += scanlineStride) { System.arraycopy(data[band], yoff, outData, off, w); off += w; } } return outData; } /** * Returns a byte array of data elements from the specified rectangular * region. * An ArrayIndexOutOfBounds exception will be thrown at runtime * if the pixel coordinates are out of bounds. * <pre> * byte[] bandData = raster.getByteData(x, y, w, h, null); * int numDataElements = raster.getNumDataElements(); * byte[] pixel = new byte[numDataElements]; * // To find a data element at location (x2, y2) * System.arraycopy(bandData, ((y2-y)*w + (x2-x))*numDataElements, * pixel, 0, numDataElements); * </pre> * @param x The X coordinate of the upper left pixel location. * @param y The Y coordinate of the upper left pixel location. * @param width Width of the pixel rectangle. * @param height Height of the pixel rectangle. * @param outData If non-null, data elements for all bands * at the specified location are returned in this array. * @return Data array with data elements for all bands. */ public byte[] getByteData(int x, int y, int w, int h, byte[] outData) { if ((x < this.minX) || (y < this.minY) || (x + w > this.maxX) || (y + h > this.maxY)) { throw new ArrayIndexOutOfBoundsException ("Coordinate out of bounds!"); } if (outData == null) { outData = new byte[numDataElements*scanlineStride*h]; } int yoff = (y-minY)*scanlineStride + (x-minX); for (int c = 0; c < numDataElements; c++) { int off = c; byte[] bank = data[c]; int dataOffset = dataOffsets[c]; // REMIND: Should keep track if dataoffsets are in a nice order int yoff2 = yoff; for (int ystart=0; ystart < h; ystart++, yoff2 += scanlineStride) { int xoff = dataOffset + yoff2; for (int xstart=0; xstart < w; xstart++) { outData[off] = bank[xoff++]; off += numDataElements; } } } return outData; } /** * Stores the data elements for all bands at the specified location. * An ArrayIndexOutOfBounds exception will be thrown at runtime * if the pixel coordinate is out of bounds. * A ClassCastException will be thrown if the input object is non null * and references anything other than an array of transferType. * @param x The X coordinate of the pixel location. * @param y The Y coordinate of the pixel location. * @param inData An object reference to an array of type defined by * getTransferType() and length getNumDataElements() * containing the pixel data to place at x,y. */ public void setDataElements(int x, int y, Object obj) { if ((x < this.minX) || (y < this.minY) || (x >= this.maxX) || (y >= this.maxY)) { throw new ArrayIndexOutOfBoundsException ("Coordinate out of bounds!"); } byte inData[] = (byte[])obj; int off = (y-minY)*scanlineStride + (x-minX); for (int i = 0; i < numDataElements; i++) { data[i][dataOffsets[i] + off] = inData[i]; } markDirty(); } /** * Stores the Raster data at the specified location. * An ArrayIndexOutOfBounds exception will be thrown at runtime * if the pixel coordinate is out of bounds. * @param x The X coordinate of the pixel location. * @param y The Y coordinate of the pixel location. * @param inRaster Raster of data to place at x,y location. */ public void setDataElements(int x, int y, Raster inRaster) { int dstOffX = inRaster.getMinX() + x; int dstOffY = inRaster.getMinY() + y; int width = inRaster.getWidth(); int height = inRaster.getHeight(); if ((dstOffX < this.minX) || (dstOffY < this.minY) || (dstOffX + width > this.maxX) || (dstOffY + height > this.maxY)) { throw new ArrayIndexOutOfBoundsException ("Coordinate out of bounds!"); } setDataElements(dstOffX, dstOffY, width, height, inRaster); } /** * Stores the Raster data at the specified location. * @param dstX The absolute X coordinate of the destination pixel * that will receive a copy of the upper-left pixel of the * inRaster * @param dstY The absolute Y coordinate of the destination pixel * that will receive a copy of the upper-left pixel of the * inRaster * @param width The number of pixels to store horizontally * @param height The number of pixels to store vertically * @param inRaster Raster of data to place at x,y location. */ private void setDataElements(int dstX, int dstY, int width, int height, Raster inRaster) { // Assume bounds checking has been performed previously if (width <= 0 || height <= 0) { return; } int srcOffX = inRaster.getMinX(); int srcOffY = inRaster.getMinY(); Object tdata = null; // // REMIND: Do something faster!// if (inRaster instanceof ByteBandedRaster) {// } for (int startY=0; startY < height; startY++) { // Grab one scanline at a time tdata = inRaster.getDataElements(srcOffX, srcOffY+startY, width, 1, tdata); setDataElements(dstX, dstY+startY, width, 1, tdata); } } /** * Stores an array of data elements into the specified rectangular * region. * An ArrayIndexOutOfBounds exception will be thrown at runtime * if the pixel coordinates are out of bounds. * A ClassCastException will be thrown if the input object is non null * and references anything other than an array of transferType. * The data elements in the * data array are assumed to be packed. That is, a data element * for the nth band at location (x2, y2) would be found at:Lines 1–500 of 791. Load more
/* * Copyright (c) 1997, 2007, 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. */ package sun.awt.image; import java.awt.image.Raster; import java.awt.image.WritableRaster; import java.awt.image.RasterFormatException; import java.awt.image.SampleModel; import java.awt.image.BandedSampleModel; import java.awt.image.DataBuffer; import java.awt.image.DataBufferByte; import java.awt.Rectangle; import java.awt.Point; /** * This class defines a Raster with pixels consisting of multiple * 8-bit samples stored in possibly separate arrays for each band. * Operations on sets of pixels are performed on a given band in the * Raster before moving on to the next band. The arrays used for * storage may be distinct or shared between some or all of the bands. * Each band additionally has an offset that is added to determine the * DataBuffer location of each pixel. * * There is only one scanline stride for all bands. The pixel stride * is always equal to one. This type of raster can be used with a * ComponentColorModel. This class requires a BandedSampleModel. * */ public class ByteBandedRaster extends SunWritableRaster { /** Data offsets for each band of image data. */ int[] dataOffsets; /** Scanline stride of the image data contained in this Raster. */ int scanlineStride; /** The image data array. */ byte[][] data; /** A cached copy of minX + width for use in bounds checks. */ private int maxX; /** A cached copy of minY + height for use in bounds checks. */ private int maxY; /** * Constructs a ByteBandedRaster 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. SampleModel * must be of type BandedSampleModel. * @param sampleModel The SampleModel that specifies the layout. * @param origin The Point that specifies the origin. */ public ByteBandedRaster(SampleModel sampleModel, Point origin) { this(sampleModel, sampleModel.createDataBuffer(), new Rectangle(origin.x, origin.y, sampleModel.getWidth(), sampleModel.getHeight()), origin, null); } /** * Constructs a ByteBanded 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 a DataBufferShort compatible with SampleModel. * SampleModel must be of type BandedSampleModel. * @param sampleModel The SampleModel that specifies the layout. * @param dataBuffer The DataBufferShort that contains the image data. * @param origin The Point that specifies the origin. */ public ByteBandedRaster(SampleModel sampleModel, DataBuffer dataBuffer, Point origin) { this(sampleModel, dataBuffer, new Rectangle(origin.x , origin.y, sampleModel.getWidth(), sampleModel.getHeight()), origin, null); } /** * Constructs a ByteBandedRaster with the given sampleModel, * DataBuffer, and parent. DataBuffer must be a DataBufferShort and * SampleModel must be of type BandedSampleModel. * When translated into the base Raster's * coordinate system, aRegion must be contained by the base Raster. * Origin is the coordinate in the new Raster's coordinate system of * the origin of the base Raster. (The base Raster is the Raster's * ancestor which has no parent.) * * 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 DataBufferShort that contains the image data. * @param aRegion The Rectangle that specifies the image area. * @param origin The Point that specifies the origin. * @param parent The parent (if any) of this raster. */ public ByteBandedRaster(SampleModel sampleModel, DataBuffer dataBuffer, Rectangle aRegion, Point origin, ByteBandedRaster parent) { super(sampleModel, dataBuffer, aRegion, origin, parent); this.maxX = minX + width; this.maxY = minY + height; if (!(dataBuffer instanceof DataBufferByte)) { throw new RasterFormatException("ByteBandedRaster must have" + "byte DataBuffers"); } DataBufferByte dbb = (DataBufferByte)dataBuffer; if (sampleModel instanceof BandedSampleModel) { BandedSampleModel bsm = (BandedSampleModel)sampleModel; this.scanlineStride = bsm.getScanlineStride(); int bankIndices[] = bsm.getBankIndices(); int bandOffsets[] = bsm.getBandOffsets(); int dOffsets[] = dbb.getOffsets(); dataOffsets = new int[bankIndices.length]; data = new byte[bankIndices.length][]; int xOffset = aRegion.x - origin.x; int yOffset = aRegion.y - origin.y; for (int i = 0; i < bankIndices.length; i++) { data[i] = stealData(dbb, bankIndices[i]); dataOffsets[i] = dOffsets[bankIndices[i]] + xOffset + yOffset*scanlineStride + bandOffsets[i]; } } else { throw new RasterFormatException("ByteBandedRasters must have"+ "BandedSampleModels"); } verify(false); } /** * Returns a copy of the data offsets array. For each band the data * offset is the index into the band's data array, of the first sample * of the band. */ public int[] getDataOffsets() { return (int[])dataOffsets.clone(); } /** * Returns data offset for the specified band. The data offset * is the index into the band's data array * in which the first sample of the first scanline is stored. * @param The band whose offset is returned. */ public int getDataOffset(int band) { return dataOffsets[band]; } /** * Returns the scanline stride -- the number of data array elements * between a given sample and the sample in the same column * of the next row in the same band. */ public int getScanlineStride() { return scanlineStride; } /** * Returns the pixel stride, which is always equal to one for * a Raster with a BandedSampleModel. */ public int getPixelStride() { return 1; } /** * Returns a reference to the entire data array. */ public byte[][] getDataStorage() { return data; } /** * Returns a reference to the specific band data array. */ public byte[] getDataStorage(int band) { return data[band]; } /** * Returns the data elements for all bands at the specified * location. * An ArrayIndexOutOfBounds exception will be thrown at runtime * if the pixel coordinate is out of bounds. * A ClassCastException will be thrown if the input object is non null * and references anything other than an array of transferType. * @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 request pixel data. */ public Object getDataElements(int x, int y, Object obj) { if ((x < this.minX) || (y < this.minY) || (x >= this.maxX) || (y >= this.maxY)) { throw new ArrayIndexOutOfBoundsException ("Coordinate out of bounds!"); } byte outData[]; if (obj == null) { outData = new byte[numDataElements]; } else { outData = (byte[])obj; } int off = (y-minY)*scanlineStride + (x-minX); for (int band = 0; band < numDataElements; band++) { outData[band] = data[band][dataOffsets[band] + off]; } return outData; } /** * Returns an array of data elements from the specified * rectangular region. * An ArrayIndexOutOfBounds exception will be thrown at runtime * if the pixel coordinates are out of bounds. * A ClassCastException will be thrown if the input object is non null * and references anything other than an array of transferType. * <pre> * byte[] bandData = (byte[])raster.getDataElement(x, y, w, h, null); * int numDataElements = raster.getNumDataElements(); * byte[] pixel = new byte[numDataElements]; * // To find a data element at location (x2, y2) * System.arraycopy(bandData, ((y2-y)*w + (x2-x))*numDataElements, * pixel, 0, numDataElements); * </pre> * @param x The X coordinate of the upper left pixel location. * @param y The Y coordinate of the upper left pixel location. * @param width Width of the pixel rectangle. * @param height 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 request pixel data. */ public Object getDataElements(int x, int y, int w, int h, Object obj) { if ((x < this.minX) || (y < this.minY) || (x + w > this.maxX) || (y + h > this.maxY)) { throw new ArrayIndexOutOfBoundsException ("Coordinate out of bounds!"); } byte outData[]; if (obj == null) { outData = new byte[numDataElements*w*h]; } else { outData = (byte[])obj; } int yoff = (y-minY)*scanlineStride + (x-minX); for (int c = 0; c < numDataElements; c++) { int off = c; byte[] bank = data[c]; int dataOffset = dataOffsets[c]; int yoff2 = yoff; for (int ystart=0; ystart < h; ystart++, yoff2 += scanlineStride) { int xoff = dataOffset + yoff2; for (int xstart=0; xstart < w; xstart++) { outData[off] = bank[xoff++]; off += numDataElements; } } } return outData; } /** * Returns a byte array of data elements from the specified rectangular * region for the specified band. * An ArrayIndexOutOfBounds exception will be thrown at runtime * if the pixel coordinates are out of bounds. * <pre> * byte[] bandData = raster.getByteData(x, y, w, h, null); * // To find the data element at location (x2, y2) * byte bandElement = bandData[((y2-y)*w + (x2-x))]; * </pre> * @param x The X coordinate of the upper left pixel location. * @param y The Y coordinate of the upper left pixel location. * @param width Width of the pixel rectangle. * @param height Height of the pixel rectangle. * @param band The band to return. * @param outData If non-null, data elements for all bands * at the specified location are returned in this array. * @return Data array with data elements for all bands. */ public byte[] getByteData(int x, int y, int w, int h, int band, byte[] outData) { // Bounds check for 'band' will be performed automatically if ((x < this.minX) || (y < this.minY) || (x + w > this.maxX) || (y + h > this.maxY)) { throw new ArrayIndexOutOfBoundsException ("Coordinate out of bounds!"); } if (outData == null) { outData = new byte[scanlineStride*h]; } int yoff = (y-minY)*scanlineStride + (x-minX) + dataOffsets[band]; if (scanlineStride == w) { System.arraycopy(data[band], yoff, outData, 0, w*h); } else { int off = 0; for (int ystart=0; ystart < h; ystart++, yoff += scanlineStride) { System.arraycopy(data[band], yoff, outData, off, w); off += w; } } return outData; } /** * Returns a byte array of data elements from the specified rectangular * region. * An ArrayIndexOutOfBounds exception will be thrown at runtime * if the pixel coordinates are out of bounds. * <pre> * byte[] bandData = raster.getByteData(x, y, w, h, null); * int numDataElements = raster.getNumDataElements(); * byte[] pixel = new byte[numDataElements]; * // To find a data element at location (x2, y2) * System.arraycopy(bandData, ((y2-y)*w + (x2-x))*numDataElements, * pixel, 0, numDataElements); * </pre> * @param x The X coordinate of the upper left pixel location. * @param y The Y coordinate of the upper left pixel location. * @param width Width of the pixel rectangle. * @param height Height of the pixel rectangle. * @param outData If non-null, data elements for all bands * at the specified location are returned in this array. * @return Data array with data elements for all bands. */ public byte[] getByteData(int x, int y, int w, int h, byte[] outData) { if ((x < this.minX) || (y < this.minY) || (x + w > this.maxX) || (y + h > this.maxY)) { throw new ArrayIndexOutOfBoundsException ("Coordinate out of bounds!"); } if (outData == null) { outData = new byte[numDataElements*scanlineStride*h]; } int yoff = (y-minY)*scanlineStride + (x-minX); for (int c = 0; c < numDataElements; c++) { int off = c; byte[] bank = data[c]; int dataOffset = dataOffsets[c]; // REMIND: Should keep track if dataoffsets are in a nice order int yoff2 = yoff; for (int ystart=0; ystart < h; ystart++, yoff2 += scanlineStride) { int xoff = dataOffset + yoff2; for (int xstart=0; xstart < w; xstart++) { outData[off] = bank[xoff++]; off += numDataElements; } } } return outData; } /** * Stores the data elements for all bands at the specified location. * An ArrayIndexOutOfBounds exception will be thrown at runtime * if the pixel coordinate is out of bounds. * A ClassCastException will be thrown if the input object is non null * and references anything other than an array of transferType. * @param x The X coordinate of the pixel location. * @param y The Y coordinate of the pixel location. * @param inData An object reference to an array of type defined by * getTransferType() and length getNumDataElements() * containing the pixel data to place at x,y. */ public void setDataElements(int x, int y, Object obj) { if ((x < this.minX) || (y < this.minY) || (x >= this.maxX) || (y >= this.maxY)) { throw new ArrayIndexOutOfBoundsException ("Coordinate out of bounds!"); } byte inData[] = (byte[])obj; int off = (y-minY)*scanlineStride + (x-minX); for (int i = 0; i < numDataElements; i++) { data[i][dataOffsets[i] + off] = inData[i]; } markDirty(); } /** * Stores the Raster data at the specified location. * An ArrayIndexOutOfBounds exception will be thrown at runtime * if the pixel coordinate is out of bounds. * @param x The X coordinate of the pixel location. * @param y The Y coordinate of the pixel location. * @param inRaster Raster of data to place at x,y location. */ public void setDataElements(int x, int y, Raster inRaster) { int dstOffX = inRaster.getMinX() + x; int dstOffY = inRaster.getMinY() + y; int width = inRaster.getWidth(); int height = inRaster.getHeight(); if ((dstOffX < this.minX) || (dstOffY < this.minY) || (dstOffX + width > this.maxX) || (dstOffY + height > this.maxY)) { throw new ArrayIndexOutOfBoundsException ("Coordinate out of bounds!"); } setDataElements(dstOffX, dstOffY, width, height, inRaster); } /** * Stores the Raster data at the specified location. * @param dstX The absolute X coordinate of the destination pixel * that will receive a copy of the upper-left pixel of the * inRaster * @param dstY The absolute Y coordinate of the destination pixel * that will receive a copy of the upper-left pixel of the * inRaster * @param width The number of pixels to store horizontally * @param height The number of pixels to store vertically * @param inRaster Raster of data to place at x,y location. */ private void setDataElements(int dstX, int dstY, int width, int height, Raster inRaster) { // Assume bounds checking has been performed previously if (width <= 0 || height <= 0) { return; } int srcOffX = inRaster.getMinX(); int srcOffY = inRaster.getMinY(); Object tdata = null; // // REMIND: Do something faster! // if (inRaster instanceof ByteBandedRaster) { // } for (int startY=0; startY < height; startY++) { // Grab one scanline at a time tdata = inRaster.getDataElements(srcOffX, srcOffY+startY, width, 1, tdata); setDataElements(dstX, dstY+startY, width, 1, tdata); } } /** * Stores an array of data elements into the specified rectangular * region. * An ArrayIndexOutOfBounds exception will be thrown at runtime * if the pixel coordinates are out of bounds. * A ClassCastException will be thrown if the input object is non null * and references anything other than an array of transferType. * The data elements in the * data array are assumed to be packed. That is, a data element * for the nth band at location (x2, y2) would be found at: