gt:         if ((x < this.minX) || (y < this.minY) ||
context: /*
   * 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.ComponentSampleModel;
  import java.awt.image.SinglePixelPackedSampleModel;
  import java.awt.image.DataBuffer;
  import java.awt.image.DataBufferUShort;
  import java.awt.Rectangle;
  import java.awt.Point;
  
  /**
   * This class defines a Raster with pixels consisting of one or more 16-bit
   * data elements stored in close proximity to each other in a short integer
   * array.  The bit precision per data element is that
   * of the data type (that is, the bit precision for this Raster is 16).
   * There is only one pixel stride and one scanline stride for all
   * bands.  This type of Raster can be used with a
   * ComponentColorModel if there are multiple bands, or a
   * IndexColorModel if there is only one band.
   * <p>
   * For example, 5-6-5 RGB image data can be represented by a
   * ShortComponentRaster using a SinglePixelPackedSampleModel and
   * a ComponentColorModel.
   *
   *
   */
  public class ShortComponentRaster extends SunWritableRaster {
  
      /** 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 short[]       data;
  
      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 ShortComponentRaster 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
       *  ComponentSampleModel or SinglePixelPackedSampleModel.
       *  @param sampleModel     The SampleModel that specifies the layout.
       *  @param origin          The Point that specified the origin.
       */
      public ShortComponentRaster(SampleModel sampleModel, Point origin) {
          this(sampleModel,
               sampleModel.createDataBuffer(),
               new Rectangle(origin.x,
                             origin.y,
                             sampleModel.getWidth(),
                             sampleModel.getHeight()),
               origin,
               null);
      }
  
      /**
       * Constructs a ShortComponentRaster 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 DataBufferUShort compatible with SampleModel.
       * SampleModel must be of type ComponentSampleModel or
       * SinglePixelPackedSampleModel.
       * @param sampleModel     The SampleModel that specifies the layout.
       * @param dataBuffer      The DataBufferUShort that contains the image data.
       * @param origin          The Point that specifies the origin.
       */
      public ShortComponentRaster(SampleModel sampleModel,
                                     DataBuffer dataBuffer,
                                     Point origin) {
          this(sampleModel,
               dataBuffer,
               new Rectangle(origin.x,
                             origin.y,
                             sampleModel.getWidth(),
                             sampleModel.getHeight()),
               origin,
               null);
      }
  
      /**
       * Constructs a ShortComponentRaster with the given SampleModel,
       * DataBuffer, and parent.  DataBuffer must be a DataBufferUShort and
       * SampleModel must be of type ComponentSampleModel or
       * 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 DataBufferUShort 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 ShortComponentRaster(SampleModel sampleModel,
                                     DataBuffer dataBuffer,
                                     Rectangle aRegion,
                                     Point origin,
                                     ShortComponentRaster parent) {
  
          super(sampleModel, dataBuffer, aRegion, origin, parent);
          this.maxX = minX + width;
          this.maxY = minY + height;
  
          if(!(dataBuffer instanceof DataBufferUShort)) {
              throw new RasterFormatException("ShortComponentRasters must have "+
                                              "short DataBuffers");
          }
  
          DataBufferUShort dbus = (DataBufferUShort)dataBuffer;
          this.data = stealData(dbus, 0);
          if (dbus.getNumBanks() != 1) {
              throw new
                  RasterFormatException("DataBuffer for ShortComponentRasters"+
                                        " must only have 1 bank.");
          }
          int dbOffset = dbus.getOffset();
  
          if (sampleModel instanceof ComponentSampleModel) {
              ComponentSampleModel csm = (ComponentSampleModel)sampleModel;
              this.type = IntegerComponentRaster.TYPE_USHORT_SAMPLES;
              this.scanlineStride = csm.getScanlineStride();
              this.pixelStride = csm.getPixelStride();
              this.dataOffsets = csm.getBandOffsets();
              int xOffset = aRegion.x - origin.x;
              int yOffset = aRegion.y - origin.y;
              for (int i = 0; i < getNumDataElements(); i++) {
                  dataOffsets[i] += dbOffset +
                      xOffset*pixelStride+yOffset*scanlineStride;
              }
          } else if (sampleModel instanceof SinglePixelPackedSampleModel) {
              SinglePixelPackedSampleModel sppsm =
                      (SinglePixelPackedSampleModel)sampleModel;
              this.type = IntegerComponentRaster.TYPE_USHORT_PACKED_SAMPLES;
              this.scanlineStride = sppsm.getScanlineStride();
              this.pixelStride    = 1;
              this.dataOffsets = new int[1];
              this.dataOffsets[0] = dbOffset;
              int xOffset = aRegion.x - origin.x;
              int yOffset = aRegion.y - origin.y;
              dataOffsets[0] += xOffset+yOffset*scanlineStride;
          } else {
              throw new RasterFormatException("ShortComponentRasters must have"+
                  "ComponentSampleModel or SinglePixelPackedSampleModel");
          }
          this.bandOffset = this.dataOffsets[0];
  
          verify();
      }
  
      /**
       * 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 the 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.
       * @param band  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 same 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 short[] 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!");
          }
          short outData[];
          if (obj == null) {
              outData = new short[numDataElements];
          } else {
              outData = (short[])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>
       *       short[] bandData = (short[])Raster.getDataElements(x, y, w, h, null);
       *       int numDataElements = Raster.getBands();
       *       short[] pixel = new short[numDataElements];
       *       // To find the 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!");
          }
          short outData[];
          if (obj == null) {
              outData = new short[w*h*numDataElements];
          } else {
              outData = (short[])obj;
          }
          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;
      }
  
      /**
       * Returns a short integer 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>
       *       short[] bandData = Raster.getShortData(x, y, w, h, null);
       *       // To find the data element at location (x2, y2)
       *       short dataElenent = 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 sample rectangle.
       * @param height   Height of the sample 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 short[] getShortData(int x, int y, int w, int h,
                                 int band, short[] outData) {
          // Bounds check for 'band' will be performed automatically
  