/* * 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.SinglePixelPackedSampleModel;import java.awt.image.DataBuffer;import java.awt.image.DataBufferInt;import java.awt.Rectangle;import java.awt.Point; /** * This class defines a Raster with pixels consisting of one or more 32-bit * data elements stored in close proximity to each other in a integer array. * The bit precision per data element is that * of the data type (that is, the bit precision for this raster is 32). * There is only one pixel stride and one scanline stride for all * bands.  For a given pixel, all samples fit in N data elements and these * N data elements hold samples for only one pixel.  This type of Raster * can be used with a PackedColorModel. * <p> * For example, if there is only one data element per pixel, a * SinglePixelPackedSampleModel can be used to represent multiple * bands with a PackedColorModel (including a DirectColorModel) for * color interpretation. * */public class IntegerComponentRaster extends SunWritableRaster {     static final int TYPE_CUSTOM                = 0;    static final int TYPE_BYTE_SAMPLES          = 1;    static final int TYPE_USHORT_SAMPLES        = 2;    static final int TYPE_INT_SAMPLES           = 3;    static final int TYPE_BYTE_BANDED_SAMPLES   = 4;    static final int TYPE_USHORT_BANDED_SAMPLES = 5;    static final int TYPE_INT_BANDED_SAMPLES    = 6;    static final int TYPE_BYTE_PACKED_SAMPLES   = 7;    static final int TYPE_USHORT_PACKED_SAMPLES = 8;    static final int TYPE_INT_PACKED_SAMPLES    = 9;    static final int TYPE_INT_8BIT_SAMPLES      = 10;    static final int TYPE_BYTE_BINARY_SAMPLES   = 11;     /** private band offset for use by native code */    protected int bandOffset;     /** Data offsets for each band of image data. */    protected int[]         dataOffsets;     /** Scanline stride of the image data contained in this Raster. */    protected int           scanlineStride;     /** Pixel stride of the image data contained in this Raster. */    protected int           pixelStride;     /** The image data array. */    protected int[]         data;     /** The number of data elements required to store a pixel. */    protected int           numDataElems;     int type;     /** 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;     static private native void initIDs();    static {        /* ensure that the necessary native libraries are loaded */        NativeLibLoader.loadLibraries();        initIDs();    }     /**     *  Constructs a IntegerComponentRaster 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     *  SinglePixelPackedSampleModel.     *  @param sampleModel     The SampleModel that specifies the layout.     *  @param origin          The Point that specified the origin.     */    public IntegerComponentRaster(SampleModel sampleModel,                                     Point origin) {        this(sampleModel,             sampleModel.createDataBuffer(),             new Rectangle(origin.x,                           origin.y,                           sampleModel.getWidth(),                           sampleModel.getHeight()),             origin,             null);    }     /**     * Constructs a IntegerComponentRaster with the given SampleModel     * and DataBuffer.  The Raster's upper left corner is origin and     * it is the same sizes the SampleModel.  The DataBuffer is not     * initialized and must be a DataBufferInt compatible with SampleModel.     * SampleModel must be of type SinglePixelPackedSampleModel.     * @param sampleModel     The SampleModel that specifies the layout.     * @param dataBuffer      The DataBufferInt that contains the image data.     * @param origin          The Point that specifies the origin.     */    public IntegerComponentRaster(SampleModel sampleModel,                                     DataBuffer dataBuffer,                                     Point origin) {        this(sampleModel,             dataBuffer,             new Rectangle(origin.x,                           origin.y,                           sampleModel.getWidth(),                           sampleModel.getHeight()),             origin,             null);    }    /**     * Constructs a IntegerComponentRaster with the given SampleModel,     * DataBuffer, and parent.  DataBuffer must be a DataBufferInt and     * SampleModel must be of type SinglePixelPackedSampleModel.     * When translated into the base Raster's     * coordinate system, aRegion must be contained by the base Raster.     * Origin is the coodinate 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 DataBufferInt 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 IntegerComponentRaster(SampleModel sampleModel,                                     DataBuffer dataBuffer,                                     Rectangle aRegion,                                     Point origin,                                     IntegerComponentRaster parent){        super(sampleModel,dataBuffer,aRegion,origin,parent);        this.maxX = minX + width;        this.maxY = minY + height;        if (!(dataBuffer instanceof DataBufferInt)) {           throw new RasterFormatException("IntegerComponentRasters must have" +                "integer DataBuffers");        }        DataBufferInt dbi = (DataBufferInt)dataBuffer;        if (dbi.getNumBanks() != 1) {            throw new                RasterFormatException("DataBuffer for IntegerComponentRasters"+                                      " must only have 1 bank.");        }        this.data = stealData(dbi, 0);         if (sampleModel instanceof SinglePixelPackedSampleModel) {            SinglePixelPackedSampleModel sppsm =                    (SinglePixelPackedSampleModel)sampleModel;            int[] boffsets = sppsm.getBitOffsets();            boolean notByteBoundary = false;            for (int i=1; i < boffsets.length; i++) {                if ((boffsets[i]%8) != 0) {                    notByteBoundary = true;                }            }            this.type = (notByteBoundary                         ? IntegerComponentRaster.TYPE_INT_PACKED_SAMPLES                         : IntegerComponentRaster.TYPE_INT_8BIT_SAMPLES);             this.scanlineStride = sppsm.getScanlineStride();            this.pixelStride    = 1;            this.dataOffsets = new int[1];            this.dataOffsets[0] = dbi.getOffset();            this.bandOffset = this.dataOffsets[0];            int xOffset = aRegion.x - origin.x;            int yOffset = aRegion.y - origin.y;            dataOffsets[0] += xOffset+yOffset*scanlineStride;            this.numDataElems = sppsm.getNumDataElements();        } else {            throw new RasterFormatException("IntegerComponentRasters must have"+                                            " SinglePixelPackedSampleModel");        }         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 data array in which the first sample     * of the first scanline is stored.     */    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.     */    public int getScanlineStride() {        return scanlineStride;    }     /**     * Returns pixel stride -- the number of data array elements  between two     * samples for the same band on the same scanline.     */    public int getPixelStride() {        return pixelStride;    }     /**     * Returns a reference to the data array.     */    public int[] getDataStorage() {        return data;    }     /**     * 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!");        }        int outData[];        if (obj == null) {            outData = new int[numDataElements];        } else {            outData = (int[])obj;        }        int off = (y-minY)*scanlineStride +                  (x-minX)*pixelStride;        for (int band = 0; band < numDataElements; band++) {            outData[band] = data[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>     *       int[] bandData = (int[])raster.getDataElements(x, y, w, h, null);     *       int numDataElements = raster.getNumDataElements();     *       int[] pixel = new int[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!");        }        int outData[];        if (obj instanceof int[]) {            outData = (int[])obj;        } else {            outData = new int[numDataElements*w*h];        }        int yoff = (y-minY)*scanlineStride +                   (x-minX)*pixelStride;        int xoff;        int off = 0;        int xstart;        int ystart;         for (ystart=0; ystart < h; ystart++, yoff += scanlineStride) {            xoff = yoff;            for (xstart=0; xstart < w; xstart++, xoff += pixelStride) {                for (int c = 0; c < numDataElements; c++) {                    outData[off++] = data[dataOffsets[c] + xoff];                }            }        }         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!");        }        int inData[] = (int[])obj;         int off = (y-minY)*scanlineStride +                  (x-minX)*pixelStride;         for (int i = 0; i < numDataElements; i++) {            data[dataOffsets[i] + off] = inData[i];        }         markDirty();    }      /**     * Stores the Raster data at the specified location.     * The transferType of the inputRaster must match this raster.     * An ArrayIndexOutOfBoundsException will be thrown at runtime     * if the pixel coordinates are 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 = x + inRaster.getMinX();        int dstOffY = y + inRaster.getMinY();        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;        }         // Write inRaster (minX, minY) to (dstX, dstY)         int srcOffX = inRaster.getMinX();        int srcOffY = inRaster.getMinY();        int tdata[] = null;         if (inRaster instanceof IntegerComponentRaster &&            (pixelStride == 1) && (numDataElements == 1)) {            IntegerComponentRaster ict = (IntegerComponentRaster) inRaster;            if (ict.getNumDataElements() != 1) {                throw new ArrayIndexOutOfBoundsException("Number of bands"+                                                         " does not match");            }             // Extract the raster parameters            tdata    = ict.getDataStorage();            int tss  = ict.getScanlineStride();            int toff = ict.getDataOffset(0);             int srcOffset = toff;             int dstOffset = dataOffsets[0]+(dstY-minY)*scanlineStride+                                           (dstX-minX);              // Fastest case.  We can copy scanlines            if (ict.getPixelStride() == pixelStride) {                width *= pixelStride;                 // Loop through all of the scanlines and copy the data                for (int startY=0; startY < height; startY++) {                    System.arraycopy(tdata, srcOffset, data, dstOffset, width);                    srcOffset += tss;                    dstOffset += scanlineStride;                }                markDirty();                return;            }        }         Object odata = null;        for (int startY=0; startY < height; startY++) {            odata = inRaster.getDataElements(srcOffX, srcOffY+startY,                                             width, 1, odata);            setDataElements(dstX, dstY+startY,                            width, 1, odata);        }    }     /**     * 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:     * <pre>     *      inData[((y2-y)*w + (x2-x))*numDataElements + n]     * </pre>     * @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 inData   An object reference to an array of type defined by     *                 getTransferType() and length w*h*getNumDataElements()     *                 containing the pixel data to place between x,y and     *                 x+h, y+h.     */    public void setDataElements(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

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