awt/java/awt/image/ComponentSampleModel.java - platform/frameworks/base - Gitiles

 /*
  *  Licensed to the Apache Software Foundation (ASF) under one or more
  *  contributor license agreements.  See the NOTICE file distributed with
  *  this work for additional information regarding copyright ownership.
  *  The ASF licenses this file to You under the Apache License, Version 2.0
  *  (the "License"); you may not use this file except in compliance with
  *  the License.  You may obtain a copy of the License at
  *
  *     http://www.apache.org/licenses/LICENSE-2.0
  *
  *  Unless required by applicable law or agreed to in writing, software
  *  distributed under the License is distributed on an "AS IS" BASIS,
  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  *  See the License for the specific language governing permissions and
  *  limitations under the License.
  */
 /**
  * @author Igor V. Stolyarov
  * @version $Revision$
  */

 package java.awt.image;

 import java.util.Arrays;

 import org.apache.harmony.awt.internal.nls.Messages;

 /**
  * The ComponentSampleModel class represents a set of image data whose each
  * element - the sample of a pixel - takes one data element of the DataBuffer.
  * <p>
  * The Bank indices denote the correspondence between the bank of data buffers
  * and a band of image data. The Pixel stride is the number of data array
  * elements between two samples for the same band on the same scanline. The
  * pixel stride for a BandedSampleModel is one. The scanline stride represents
  * the number of data array elements between a specified sample and the
  * corresponding sample in the same column in the next scanline. The array of
  * band offsets gives the starting offsets within each data banks of the in the
  * DataBuffer. The bank indices represents the indices within each bank of the
  * DataBuffer corresponding to a band of image data.
  *
  * @since Android 1.0
  */
 public class ComponentSampleModel extends SampleModel {

     /**
      * The band offsets array of this ComponentSampleModel.
      */
     protected int bandOffsets[];

     /**
      * The bank indices array of this ComponentSampleModel.
      */
     protected int bankIndices[];

     /**
      * The number of bands in this ComponentSampleModel.
      */
     protected int numBands;

     /**
      * The number banks of this ComponentSampleModel.
      */
     protected int numBanks;

     /**
      * The scanline stride of this ComponentSampleModel.
      */
     protected int scanlineStride;

     /**
      * The pixel stride of this ComponentSampleModel.
      */
     protected int pixelStride;

     /**
      * Instantiates a new ComponentSampleModel with the specified properties.
      *
      * @param dataType
      *            the data type of samples.
      * @param w
      *            the width of the image data.
      * @param h
      *            the height of the image data.
      * @param pixelStride
      *            the pixel stride of the image data.
      * @param scanlineStride
      *            the scanline stride of the image data.
      * @param bankIndices
      *            the array of the bank indices.
      * @param bandOffsets
      *            the array of the band offsets.
      */
     public ComponentSampleModel(int dataType, int w, int h, int pixelStride, int scanlineStride,
             int bankIndices[], int bandOffsets[]) {

         super(dataType, w, h, bandOffsets.length);

         if (pixelStride < 0) {
             // awt.24B=Pixel stride must be >= 0
             throw new IllegalArgumentException(Messages.getString("awt.24B")); //$NON-NLS-1$
         }

         if (scanlineStride < 0) {
             // awt.24C=Scanline stride must be >= 0
             throw new IllegalArgumentException(Messages.getString("awt.24C")); //$NON-NLS-1$
         }

         if (bankIndices.length != bandOffsets.length) {
             // awt.24D=Bank Indices length must be equal Bank Offsets length
             throw new IllegalArgumentException(Messages.getString("awt.24D")); //$NON-NLS-1$
         }

         this.pixelStride = pixelStride;
         this.scanlineStride = scanlineStride;
         this.bandOffsets = bandOffsets.clone();
         this.bankIndices = bankIndices.clone();
         this.numBands = bandOffsets.length;

         int maxBank = 0;
         for (int i = 0; i < bankIndices.length; i++) {
             if (bankIndices[i] < 0) {
                 // awt.24E=Index of {0} bank must be >= 0
                 throw new IllegalArgumentException(Messages.getString("awt.24E", i)); //$NON-NLS-1$
             }
             if (bankIndices[i] > maxBank) {
                 maxBank = bankIndices[i];
             }
         }
         this.numBanks = maxBank + 1;

     }

     /**
      * Instantiates a new ComponentSampleModel with the specified properties.
      *
      * @param dataType
      *            the data type of the samples.
      * @param w
      *            the width of the image data.
      * @param h
      *            the height of the image data.
      * @param pixelStride
      *            the pixel stride of the image data.
      * @param scanlineStride
      *            the scanline stride of the image data.
      * @param bandOffsets
      *            the band offsets.
      */
     public ComponentSampleModel(int dataType, int w, int h, int pixelStride, int scanlineStride,
             int bandOffsets[]) {

         super(dataType, w, h, bandOffsets.length);
         if (pixelStride < 0) {
             // awt.24B=Pixel stride must be >= 0
             throw new IllegalArgumentException(Messages.getString("awt.24B")); //$NON-NLS-1$
         }

         if (scanlineStride < 0) {
             // awt.24C=Scanline stride must be >= 0
             throw new IllegalArgumentException(Messages.getString("awt.24C")); //$NON-NLS-1$
         }

         this.pixelStride = pixelStride;
         this.scanlineStride = scanlineStride;
         this.bandOffsets = bandOffsets.clone();
         this.numBands = bandOffsets.length;
         this.numBanks = 1;

         this.bankIndices = new int[numBands];
         for (int i = 0; i < numBands; i++) {
             bankIndices[i] = 0;
         }
     }

     @Override
     public Object getDataElements(int x, int y, Object obj, DataBuffer data) {
         if (x < 0 || y < 0 || x >= this.width || y >= this.height) {
             // awt.63=Coordinates are not in bounds
             throw new ArrayIndexOutOfBoundsException(Messages.getString("awt.63")); //$NON-NLS-1$
         }
         switch (dataType) {
             case DataBuffer.TYPE_BYTE:
                 byte bdata[];
                 if (obj == null) {
                     bdata = new byte[numBands];
                 } else {
                     bdata = (byte[])obj;
                 }

                 for (int i = 0; i < numBands; i++) {
                     bdata[i] = (byte)getSample(x, y, i, data);
                 }

                 obj = bdata;
                 break;

             case DataBuffer.TYPE_SHORT:
             case DataBuffer.TYPE_USHORT:
                 short sdata[];
                 if (obj == null) {
                     sdata = new short[numBands];
                 } else {
                     sdata = (short[])obj;
                 }

                 for (int i = 0; i < numBands; i++) {
                     sdata[i] = (short)getSample(x, y, i, data);
                 }

                 obj = sdata;
                 break;

             case DataBuffer.TYPE_INT:
                 int idata[];
                 if (obj == null) {
                     idata = new int[numBands];
                 } else {
                     idata = (int[])obj;
                 }

                 for (int i = 0; i < numBands; i++) {
                     idata[i] = getSample(x, y, i, data);
                 }

                 obj = idata;
                 break;

             case DataBuffer.TYPE_FLOAT:
                 float fdata[];
                 if (obj == null) {
                     fdata = new float[numBands];
                 } else {
                     fdata = (float[])obj;
                 }

                 for (int i = 0; i < numBands; i++) {
                     fdata[i] = getSampleFloat(x, y, i, data);
                 }

                 obj = fdata;
                 break;

             case DataBuffer.TYPE_DOUBLE:
                 double ddata[];
                 if (obj == null) {
                     ddata = new double[numBands];
                 } else {
                     ddata = (double[])obj;
                 }

                 for (int i = 0; i < numBands; i++) {
                     ddata[i] = getSampleDouble(x, y, i, data);
                 }

                 obj = ddata;
                 break;
         }

         return obj;
     }

     @Override
     public void setDataElements(int x, int y, Object obj, DataBuffer data) {
         if (x < 0 || y < 0 || x >= this.width || y >= this.height) {
             // awt.63=Coordinates are not in bounds
             throw new ArrayIndexOutOfBoundsException(Messages.getString("awt.63")); //$NON-NLS-1$
         }
         switch (dataType) {
             case DataBuffer.TYPE_BYTE:
                 byte barr[] = (byte[])obj;
                 for (int i = 0; i < numBands; i++) {
                     setSample(x, y, i, barr[i] & 0xff, data);
                 }
                 break;

             case DataBuffer.TYPE_SHORT:
             case DataBuffer.TYPE_USHORT:
                 short sarr[] = (short[])obj;
                 for (int i = 0; i < numBands; i++) {
                     setSample(x, y, i, sarr[i] & 0xffff, data);
                 }
                 break;

             case DataBuffer.TYPE_INT:
                 int iarr[] = (int[])obj;
                 for (int i = 0; i < numBands; i++) {
                     setSample(x, y, i, iarr[i], data);
                 }
                 break;

             case DataBuffer.TYPE_FLOAT:
                 float farr[] = (float[])obj;
                 for (int i = 0; i < numBands; i++) {
                     setSample(x, y, i, farr[i], data);
                 }
                 break;

             case DataBuffer.TYPE_DOUBLE:
                 double darr[] = (double[])obj;
                 for (int i = 0; i < numBands; i++) {
                     setSample(x, y, i, darr[i], data);
                 }
                 break;
         }
     }

     /**
      * Compares this ComponentSampleModel with the specified Object.
      *
      * @param o
      *            the Object.
      * @return true, if the object is a ComponentSampleModel with identical data
      *         values to this ComponentSampleModel, false otherwise.
      */
     @Override
     public boolean equals(Object o) {
         if ((o == null) || !(o instanceof ComponentSampleModel)) {
             return false;
         }
         ComponentSampleModel model = (ComponentSampleModel)o;
         return this.width == model.width && this.height == model.height
                 && this.numBands == model.numBands && this.dataType == model.dataType
                 && Arrays.equals(this.bandOffsets, model.bandOffsets)
                 && Arrays.equals(this.bankIndices, model.bankIndices)
                 && this.numBands == model.numBands && this.numBanks == model.numBanks
                 && this.scanlineStride == model.scanlineStride
                 && this.pixelStride == model.pixelStride;
     }

     /**
      * @see java.awt.image.SampleModel#createSubsetSampleModel(int[])
      */
     @Override
     public SampleModel createSubsetSampleModel(int bands[]) {
         if (bands.length > this.numBands) {
             // awt.64=The number of the bands in the subset is greater than the
             // number of bands in the sample model
             throw new RasterFormatException(Messages.getString("awt.64")); //$NON-NLS-1$
         }

         int indices[] = new int[bands.length];
         int offsets[] = new int[bands.length];

         for (int i = 0; i < bands.length; i++) {
             indices[i] = bankIndices[bands[i]];
             offsets[i] = bandOffsets[bands[i]];
         }

         return new ComponentSampleModel(dataType, width, height, pixelStride, scanlineStride,
                 indices, offsets);

     }

     @Override
     public SampleModel createCompatibleSampleModel(int w, int h) {
         return new ComponentSampleModel(dataType, w, h, pixelStride, pixelStride * w, bankIndices,
                 bandOffsets);
     }

     @Override
     public int[] getPixel(int x, int y, int iArray[], DataBuffer data) {
         int pixel[];

         if (iArray == null) {
             pixel = new int[numBands];
         } else {
             pixel = iArray;
         }

         for (int i = 0; i < numBands; i++) {
             pixel[i] = getSample(x, y, i, data);
         }

         return pixel;
     }

     @Override
     public void setPixel(int x, int y, int iArray[], DataBuffer data) {
         for (int i = 0; i < numBands; i++) {
             setSample(x, y, i, iArray[i], data);
         }
     }

     @Override
     public int getSample(int x, int y, int b, DataBuffer data) {
         if (x < 0 || y < 0 || x >= this.width || y >= this.height) {
             // awt.63=Coordinates are not in bounds
             throw new ArrayIndexOutOfBoundsException(Messages.getString("awt.63")); //$NON-NLS-1$
         }

         return data.getElem(bankIndices[b], y * scanlineStride + x * pixelStride + bandOffsets[b]);
     }

     @Override
     public float getSampleFloat(int x, int y, int b, DataBuffer data) {
         if (x < 0 || y < 0 || x >= this.width || y >= this.height) {
             // awt.63=Coordinates are not in bounds
             throw new ArrayIndexOutOfBoundsException(Messages.getString("awt.63")); //$NON-NLS-1$
         }

         return data.getElemFloat(bankIndices[b], y * scanlineStride + x * pixelStride
                 + bandOffsets[b]);
     }

     @Override
     public double getSampleDouble(int x, int y, int b, DataBuffer data) {
         if (x < 0 || y < 0 || x >= this.width || y >= this.height) {
             // awt.63=Coordinates are not in bounds
             throw new ArrayIndexOutOfBoundsException(Messages.getString("awt.63")); //$NON-NLS-1$
         }

         return data.getElemDouble(bankIndices[b], y * scanlineStride + x * pixelStride
                 + bandOffsets[b]);
     }

     @Override
     public int[] getPixels(int x, int y, int w, int h, int iArray[], DataBuffer data) {
         if (x < 0 || y < 0 || x > this.width || x + w > this.width || y > this.height
                 || y + h > this.height) {
             // awt.63=Coordinates are not in bounds
             throw new ArrayIndexOutOfBoundsException(Messages.getString("awt.63")); //$NON-NLS-1$
         }
         int pixels[] = null;
         int idx = 0;

         if (iArray == null) {
             pixels = new int[w * h * numBands];
         } else {
             pixels = iArray;
         }

         for (int i = y; i < y + h; i++) {
             for (int j = x; j < x + w; j++) {
                 for (int n = 0; n < numBands; n++) {
                     pixels[idx++] = getSample(j, i, n, data);
                 }
             }
         }

         return pixels;
     }

     @Override
     public void setPixels(int x, int y, int w, int h, int iArray[], DataBuffer data) {
         if (x < 0 || y < 0 || x + w > this.width || y + h > this.height) {
             // awt.63=Coordinates are not in bounds
             throw new ArrayIndexOutOfBoundsException(Messages.getString("awt.63")); //$NON-NLS-1$
         }
         int idx = 0;
         for (int i = y; i < y + h; i++) {
             for (int j = x; j < x + w; j++) {
                 for (int n = 0; n < numBands; n++) {
                     setSample(j, i, n, iArray[idx++], data);
                 }
             }
         }
     }

     @Override
     public void setSample(int x, int y, int b, int s, DataBuffer data) {
         if (x < 0 || y < 0 || x >= this.width || y >= this.height) {
             // awt.63=Coordinates are not in bounds
             throw new ArrayIndexOutOfBoundsException(Messages.getString("awt.63")); //$NON-NLS-1$
         }

         data.setElem(bankIndices[b], y * scanlineStride + x * pixelStride + bandOffsets[b], s);
     }

     @Override
     public int[] getSamples(int x, int y, int w, int h, int b, int iArray[], DataBuffer data) {
         if (x < 0 || y < 0 || x + w > this.width || y + h > this.height) {
             // awt.63=Coordinates are not in bounds
             throw new ArrayIndexOutOfBoundsException(Messages.getString("awt.63")); //$NON-NLS-1$
         }
         int samples[];
         int idx = 0;

         if (iArray == null) {
             samples = new int[w * h];
         } else {
             samples = iArray;
         }

         if (data == null) {
             // awt.295=data is null
             throw new NullPointerException(Messages.getString("awt.295")); //$NON-NLS-1$
         }

         for (int i = y; i < y + h; i++) {
             for (int j = x; j < x + w; j++) {
                 samples[idx++] = getSample(j, i, b, data);
             }
         }

         return samples;
     }

     @Override
     public void setSamples(int x, int y, int w, int h, int b, int iArray[], DataBuffer data) {
         if (x < 0 || y < 0 || x + w > this.width || y + h > this.height) {
             // awt.63=Coordinates are not in bounds
             throw new ArrayIndexOutOfBoundsException(Messages.getString("awt.63")); //$NON-NLS-1$
         }
         int idx = 0;
         for (int i = y; i < y + h; i++) {
             for (int j = x; j < x + w; j++) {
                 setSample(j, i, b, iArray[idx++], data);
             }
         }
     }

     @Override
     public void setSample(int x, int y, int b, float s, DataBuffer data) {
         if (x < 0 || y < 0 || x >= this.width || y >= this.height) {
             // awt.63=Coordinates are not in bounds
             throw new ArrayIndexOutOfBoundsException(Messages.getString("awt.63")); //$NON-NLS-1$
         }

         data.setElemFloat(bankIndices[b], y * scanlineStride + x * pixelStride + bandOffsets[b], s);
     }

     @Override
     public void setSample(int x, int y, int b, double s, DataBuffer data) {
         if (x < 0 || y < 0 || x >= this.width || y >= this.height) {
             // awt.63=Coordinates are not in bounds
             throw new ArrayIndexOutOfBoundsException(Messages.getString("awt.63")); //$NON-NLS-1$
         }

         data
                 .setElemDouble(bankIndices[b], y * scanlineStride + x * pixelStride
                         + bandOffsets[b], s);
     }

     @Override
     public DataBuffer createDataBuffer() {
         DataBuffer data = null;

         int maxOffset = bandOffsets[0];
         for (int i = 1; i < bandOffsets.length; i++) {
             if (bandOffsets[i] > maxOffset) {
                 maxOffset = bandOffsets[i];
             }
         }
         int size = (height - 1) * scanlineStride + (width - 1) * pixelStride + maxOffset + 1;

         switch (dataType) {
             case DataBuffer.TYPE_BYTE:
                 data = new DataBufferByte(size, numBanks);
                 break;
             case DataBuffer.TYPE_SHORT:
                 data = new DataBufferShort(size, numBanks);
                 break;
             case DataBuffer.TYPE_USHORT:
                 data = new DataBufferUShort(size, numBanks);
                 break;
             case DataBuffer.TYPE_INT:
                 data = new DataBufferInt(size, numBanks);
                 break;
             case DataBuffer.TYPE_FLOAT:
                 data = new DataBufferFloat(size, numBanks);
                 break;
             case DataBuffer.TYPE_DOUBLE:
                 data = new DataBufferDouble(size, numBanks);
                 break;
         }

         return data;

     }

     /**
      * Gets the offset of the specified band of the specified pixel.
      *
      * @param x
      *            the X coordinate of the pixel.
      * @param y
      *            the Y coordinate of the pixel.
      * @param b
      *            the band.
      * @return the offset of the specified band of the specified pixel.
      */
     public int getOffset(int x, int y, int b) {
         return y * scanlineStride + x * pixelStride + bandOffsets[b];
     }

     /**
      * Gets the offset of the first band of the specified pixel.
      *
      * @param x
      *            the X coordinate of pixel.
      * @param y
      *            the Y coordinate of pixel.
      * @return the offset of the first band of the specified pixel.
      */
     public int getOffset(int x, int y) {
         return y * scanlineStride + x * pixelStride + bandOffsets[0];
     }

     @Override
     public final int getSampleSize(int band) {
         return DataBuffer.getDataTypeSize(dataType);
     }

     @Override
     public final int[] getSampleSize() {
         int sampleSizes[] = new int[numBands];
         int size = DataBuffer.getDataTypeSize(dataType);

         for (int i = 0; i < numBands; i++) {
             sampleSizes[i] = size;
         }
         return sampleSizes;
     }

     /**
      * Gets an array of bank indices corresponding to this ComponentSampleModel.
      *
      * @return the array of bank indices.
      */
     public final int[] getBankIndices() {
         return bankIndices.clone();
     }

     /**
      * Gets an array of the band offsets corresponding to this
      * ComponentSampleModel.
      *
      * @return the array of band offsets.
      */
     public final int[] getBandOffsets() {
         return bandOffsets.clone();
     }

     /**
      * Gets a hash code of this ComponentSampleModel object.
      *
      * @return a hash code of this ComponentSampleModel object.
      */
     @Override
     public int hashCode() {
         int hash = 0;
         int tmp = 0;

         hash = width;
         tmp = hash >>> 24;
         hash <<= 8;
         hash |= tmp;
         hash ^= height;
         tmp = hash >>> 24;
         hash <<= 8;
         hash |= tmp;
         hash ^= numBands;
         tmp = hash >>> 24;
         hash <<= 8;
         hash |= tmp;
         hash ^= dataType;
         tmp = hash >>> 24;
         hash <<= 8;
         hash |= tmp;
         for (int element : bandOffsets) {
             hash ^= element;
             tmp = hash >>> 24;
             hash <<= 8;
             hash |= tmp;
         }
         for (int element : bankIndices) {
             hash ^= element;
             tmp = hash >>> 24;
             hash <<= 8;
             hash |= tmp;
         }
         hash ^= pixelStride;
         tmp = hash >>> 24;
         hash <<= 8;
         hash |= tmp;

         hash ^= scanlineStride;
         return hash;
     }

     /**
      * Gets the scanline stride of this ComponentSampleModel.
      *
      * @return the scanline stride of this ComponentSampleModel.
      */
     public final int getScanlineStride() {
         return scanlineStride;
     }

     /**
      * Gets the pixel stride.
      *
      * @return the pixel stride.
      */
     public final int getPixelStride() {
         return pixelStride;
     }

     @Override
     public final int getNumDataElements() {
         return numBands;
     }

 }
	/*
	* Licensed to the Apache Software Foundation (ASF) under one or more
	* contributor license agreements. See the NOTICE file distributed with
	* this work for additional information regarding copyright ownership.
	* The ASF licenses this file to You under the Apache License, Version 2.0
	* (the "License"); you may not use this file except in compliance with
	* the License. You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/
	/**
	* @author Igor V. Stolyarov
	* @version $Revision$
	*/

	package java.awt.image;

	import java.util.Arrays;

	import org.apache.harmony.awt.internal.nls.Messages;

	/**
	* The ComponentSampleModel class represents a set of image data whose each
	* element - the sample of a pixel - takes one data element of the DataBuffer.
	* <p>
	* The Bank indices denote the correspondence between the bank of data buffers
	* and a band of image data. The Pixel stride is the number of data array
	* elements between two samples for the same band on the same scanline. The
	* pixel stride for a BandedSampleModel is one. The scanline stride represents
	* the number of data array elements between a specified sample and the
	* corresponding sample in the same column in the next scanline. The array of
	* band offsets gives the starting offsets within each data banks of the in the
	* DataBuffer. The bank indices represents the indices within each bank of the
	* DataBuffer corresponding to a band of image data.
	*
	* @since Android 1.0
	*/
	public class ComponentSampleModel extends SampleModel {

	/**
	* The band offsets array of this ComponentSampleModel.
	*/
	protected int bandOffsets[];

	/**
	* The bank indices array of this ComponentSampleModel.
	*/
	protected int bankIndices[];

	/**
	* The number of bands in this ComponentSampleModel.
	*/
	protected int numBands;

	/**
	* The number banks of this ComponentSampleModel.
	*/
	protected int numBanks;

	/**
	* The scanline stride of this ComponentSampleModel.
	*/
	protected int scanlineStride;

	/**
	* The pixel stride of this ComponentSampleModel.
	*/
	protected int pixelStride;

	/**
	* Instantiates a new ComponentSampleModel with the specified properties.
	*
	* @param dataType
	* the data type of samples.
	* @param w
	* the width of the image data.
	* @param h
	* the height of the image data.
	* @param pixelStride
	* the pixel stride of the image data.
	* @param scanlineStride
	* the scanline stride of the image data.
	* @param bankIndices
	* the array of the bank indices.
	* @param bandOffsets
	* the array of the band offsets.
	*/
	public ComponentSampleModel(int dataType, int w, int h, int pixelStride, int scanlineStride,
	int bankIndices[], int bandOffsets[]) {

	super(dataType, w, h, bandOffsets.length);

	if (pixelStride < 0) {
	// awt.24B=Pixel stride must be >= 0
	throw new IllegalArgumentException(Messages.getString("awt.24B")); //$NON-NLS-1$
	}

	if (scanlineStride < 0) {
	// awt.24C=Scanline stride must be >= 0
	throw new IllegalArgumentException(Messages.getString("awt.24C")); //$NON-NLS-1$
	}

	if (bankIndices.length != bandOffsets.length) {
	// awt.24D=Bank Indices length must be equal Bank Offsets length
	throw new IllegalArgumentException(Messages.getString("awt.24D")); //$NON-NLS-1$
	}

	this.pixelStride = pixelStride;
	this.scanlineStride = scanlineStride;
	this.bandOffsets = bandOffsets.clone();
	this.bankIndices = bankIndices.clone();
	this.numBands = bandOffsets.length;

	int maxBank = 0;
	for (int i = 0; i < bankIndices.length; i++) {
	if (bankIndices[i] < 0) {
	// awt.24E=Index of {0} bank must be >= 0
	throw new IllegalArgumentException(Messages.getString("awt.24E", i)); //$NON-NLS-1$
	}
	if (bankIndices[i] > maxBank) {
	maxBank = bankIndices[i];
	}
	}
	this.numBanks = maxBank + 1;

	}

	/**
	* Instantiates a new ComponentSampleModel with the specified properties.
	*
	* @param dataType
	* the data type of the samples.
	* @param w
	* the width of the image data.
	* @param h
	* the height of the image data.
	* @param pixelStride
	* the pixel stride of the image data.
	* @param scanlineStride
	* the scanline stride of the image data.
	* @param bandOffsets
	* the band offsets.
	*/
	public ComponentSampleModel(int dataType, int w, int h, int pixelStride, int scanlineStride,
	int bandOffsets[]) {

	super(dataType, w, h, bandOffsets.length);
	if (pixelStride < 0) {
	// awt.24B=Pixel stride must be >= 0
	throw new IllegalArgumentException(Messages.getString("awt.24B")); //$NON-NLS-1$
	}

	if (scanlineStride < 0) {
	// awt.24C=Scanline stride must be >= 0
	throw new IllegalArgumentException(Messages.getString("awt.24C")); //$NON-NLS-1$
	}

	this.pixelStride = pixelStride;
	this.scanlineStride = scanlineStride;
	this.bandOffsets = bandOffsets.clone();
	this.numBands = bandOffsets.length;
	this.numBanks = 1;

	this.bankIndices = new int[numBands];
	for (int i = 0; i < numBands; i++) {
	bankIndices[i] = 0;
	}
	}

	@Override
	public Object getDataElements(int x, int y, Object obj, DataBuffer data) {
	if (x < 0 \|\| y < 0 \|\| x >= this.width \|\| y >= this.height) {
	// awt.63=Coordinates are not in bounds
	throw new ArrayIndexOutOfBoundsException(Messages.getString("awt.63")); //$NON-NLS-1$
	}
	switch (dataType) {
	case DataBuffer.TYPE_BYTE:
	byte bdata[];
	if (obj == null) {
	bdata = new byte[numBands];
	} else {
	bdata = (byte[])obj;
	}

	for (int i = 0; i < numBands; i++) {
	bdata[i] = (byte)getSample(x, y, i, data);
	}

	obj = bdata;
	break;

	case DataBuffer.TYPE_SHORT:
	case DataBuffer.TYPE_USHORT:
	short sdata[];
	if (obj == null) {
	sdata = new short[numBands];
	} else {
	sdata = (short[])obj;
	}

	for (int i = 0; i < numBands; i++) {
	sdata[i] = (short)getSample(x, y, i, data);
	}

	obj = sdata;
	break;

	case DataBuffer.TYPE_INT:
	int idata[];
	if (obj == null) {
	idata = new int[numBands];
	} else {
	idata = (int[])obj;
	}

	for (int i = 0; i < numBands; i++) {
	idata[i] = getSample(x, y, i, data);
	}

	obj = idata;
	break;

	case DataBuffer.TYPE_FLOAT:
	float fdata[];
	if (obj == null) {
	fdata = new float[numBands];
	} else {
	fdata = (float[])obj;
	}

	for (int i = 0; i < numBands; i++) {
	fdata[i] = getSampleFloat(x, y, i, data);
	}

	obj = fdata;
	break;

	case DataBuffer.TYPE_DOUBLE:
	double ddata[];
	if (obj == null) {
	ddata = new double[numBands];
	} else {
	ddata = (double[])obj;
	}

	for (int i = 0; i < numBands; i++) {
	ddata[i] = getSampleDouble(x, y, i, data);
	}

	obj = ddata;
	break;
	}

	return obj;
	}

	@Override
	public void setDataElements(int x, int y, Object obj, DataBuffer data) {
	if (x < 0 \|\| y < 0 \|\| x >= this.width \|\| y >= this.height) {
	// awt.63=Coordinates are not in bounds
	throw new ArrayIndexOutOfBoundsException(Messages.getString("awt.63")); //$NON-NLS-1$
	}
	switch (dataType) {
	case DataBuffer.TYPE_BYTE:
	byte barr[] = (byte[])obj;
	for (int i = 0; i < numBands; i++) {
	setSample(x, y, i, barr[i] & 0xff, data);
	}
	break;

	case DataBuffer.TYPE_SHORT:
	case DataBuffer.TYPE_USHORT:
	short sarr[] = (short[])obj;
	for (int i = 0; i < numBands; i++) {
	setSample(x, y, i, sarr[i] & 0xffff, data);
	}
	break;

	case DataBuffer.TYPE_INT:
	int iarr[] = (int[])obj;
	for (int i = 0; i < numBands; i++) {
	setSample(x, y, i, iarr[i], data);
	}
	break;

	case DataBuffer.TYPE_FLOAT:
	float farr[] = (float[])obj;
	for (int i = 0; i < numBands; i++) {
	setSample(x, y, i, farr[i], data);
	}
	break;

	case DataBuffer.TYPE_DOUBLE:
	double darr[] = (double[])obj;
	for (int i = 0; i < numBands; i++) {
	setSample(x, y, i, darr[i], data);
	}
	break;
	}
	}

	/**
	* Compares this ComponentSampleModel with the specified Object.
	*
	* @param o
	* the Object.
	* @return true, if the object is a ComponentSampleModel with identical data
	* values to this ComponentSampleModel, false otherwise.
	*/
	@Override
	public boolean equals(Object o) {
	if ((o == null) \|\| !(o instanceof ComponentSampleModel)) {
	return false;
	}
	ComponentSampleModel model = (ComponentSampleModel)o;
	return this.width == model.width && this.height == model.height
	&& this.numBands == model.numBands && this.dataType == model.dataType
	&& Arrays.equals(this.bandOffsets, model.bandOffsets)
	&& Arrays.equals(this.bankIndices, model.bankIndices)
	&& this.numBands == model.numBands && this.numBanks == model.numBanks
	&& this.scanlineStride == model.scanlineStride
	&& this.pixelStride == model.pixelStride;
	}

	/**
	* @see java.awt.image.SampleModel#createSubsetSampleModel(int[])
	*/
	@Override
	public SampleModel createSubsetSampleModel(int bands[]) {
	if (bands.length > this.numBands) {
	// awt.64=The number of the bands in the subset is greater than the
	// number of bands in the sample model
	throw new RasterFormatException(Messages.getString("awt.64")); //$NON-NLS-1$
	}

	int indices[] = new int[bands.length];
	int offsets[] = new int[bands.length];

	for (int i = 0; i < bands.length; i++) {
	indices[i] = bankIndices[bands[i]];
	offsets[i] = bandOffsets[bands[i]];
	}

	return new ComponentSampleModel(dataType, width, height, pixelStride, scanlineStride,
	indices, offsets);

	}

	@Override
	public SampleModel createCompatibleSampleModel(int w, int h) {
	return new ComponentSampleModel(dataType, w, h, pixelStride, pixelStride * w, bankIndices,
	bandOffsets);
	}

	@Override
	public int[] getPixel(int x, int y, int iArray[], DataBuffer data) {
	int pixel[];

	if (iArray == null) {
	pixel = new int[numBands];
	} else {
	pixel = iArray;
	}

	for (int i = 0; i < numBands; i++) {
	pixel[i] = getSample(x, y, i, data);
	}

	return pixel;
	}

	@Override
	public void setPixel(int x, int y, int iArray[], DataBuffer data) {
	for (int i = 0; i < numBands; i++) {
	setSample(x, y, i, iArray[i], data);
	}
	}

	@Override
	public int getSample(int x, int y, int b, DataBuffer data) {
	if (x < 0 \|\| y < 0 \|\| x >= this.width \|\| y >= this.height) {
	// awt.63=Coordinates are not in bounds
	throw new ArrayIndexOutOfBoundsException(Messages.getString("awt.63")); //$NON-NLS-1$
	}

	return data.getElem(bankIndices[b], y * scanlineStride + x * pixelStride + bandOffsets[b]);
	}

	@Override
	public float getSampleFloat(int x, int y, int b, DataBuffer data) {
	if (x < 0 \|\| y < 0 \|\| x >= this.width \|\| y >= this.height) {
	// awt.63=Coordinates are not in bounds
	throw new ArrayIndexOutOfBoundsException(Messages.getString("awt.63")); //$NON-NLS-1$
	}

	return data.getElemFloat(bankIndices[b], y * scanlineStride + x * pixelStride
	+ bandOffsets[b]);
	}

	@Override
	public double getSampleDouble(int x, int y, int b, DataBuffer data) {
	if (x < 0 \|\| y < 0 \|\| x >= this.width \|\| y >= this.height) {
	// awt.63=Coordinates are not in bounds
	throw new ArrayIndexOutOfBoundsException(Messages.getString("awt.63")); //$NON-NLS-1$
	}

	return data.getElemDouble(bankIndices[b], y * scanlineStride + x * pixelStride
	+ bandOffsets[b]);
	}

	@Override
	public int[] getPixels(int x, int y, int w, int h, int iArray[], DataBuffer data) {
	if (x < 0 \|\| y < 0 \|\| x > this.width \|\| x + w > this.width \|\| y > this.height
	\|\| y + h > this.height) {
	// awt.63=Coordinates are not in bounds
	throw new ArrayIndexOutOfBoundsException(Messages.getString("awt.63")); //$NON-NLS-1$
	}
	int pixels[] = null;
	int idx = 0;

	if (iArray == null) {
	pixels = new int[w * h * numBands];
	} else {
	pixels = iArray;
	}

	for (int i = y; i < y + h; i++) {
	for (int j = x; j < x + w; j++) {
	for (int n = 0; n < numBands; n++) {
	pixels[idx++] = getSample(j, i, n, data);
	}
	}
	}

	return pixels;
	}

	@Override
	public void setPixels(int x, int y, int w, int h, int iArray[], DataBuffer data) {
	if (x < 0 \|\| y < 0 \|\| x + w > this.width \|\| y + h > this.height) {
	// awt.63=Coordinates are not in bounds
	throw new ArrayIndexOutOfBoundsException(Messages.getString("awt.63")); //$NON-NLS-1$
	}
	int idx = 0;
	for (int i = y; i < y + h; i++) {
	for (int j = x; j < x + w; j++) {
	for (int n = 0; n < numBands; n++) {
	setSample(j, i, n, iArray[idx++], data);
	}
	}
	}
	}

	@Override
	public void setSample(int x, int y, int b, int s, DataBuffer data) {
	if (x < 0 \|\| y < 0 \|\| x >= this.width \|\| y >= this.height) {
	// awt.63=Coordinates are not in bounds
	throw new ArrayIndexOutOfBoundsException(Messages.getString("awt.63")); //$NON-NLS-1$
	}

	data.setElem(bankIndices[b], y * scanlineStride + x * pixelStride + bandOffsets[b], s);
	}

	@Override
	public int[] getSamples(int x, int y, int w, int h, int b, int iArray[], DataBuffer data) {
	if (x < 0 \|\| y < 0 \|\| x + w > this.width \|\| y + h > this.height) {
	// awt.63=Coordinates are not in bounds
	throw new ArrayIndexOutOfBoundsException(Messages.getString("awt.63")); //$NON-NLS-1$
	}
	int samples[];
	int idx = 0;

	if (iArray == null) {
	samples = new int[w * h];
	} else {
	samples = iArray;
	}

	if (data == null) {
	// awt.295=data is null
	throw new NullPointerException(Messages.getString("awt.295")); //$NON-NLS-1$
	}

	for (int i = y; i < y + h; i++) {
	for (int j = x; j < x + w; j++) {
	samples[idx++] = getSample(j, i, b, data);
	}
	}

	return samples;
	}

	@Override
	public void setSamples(int x, int y, int w, int h, int b, int iArray[], DataBuffer data) {
	if (x < 0 \|\| y < 0 \|\| x + w > this.width \|\| y + h > this.height) {
	// awt.63=Coordinates are not in bounds
	throw new ArrayIndexOutOfBoundsException(Messages.getString("awt.63")); //$NON-NLS-1$
	}
	int idx = 0;
	for (int i = y; i < y + h; i++) {
	for (int j = x; j < x + w; j++) {
	setSample(j, i, b, iArray[idx++], data);
	}
	}
	}

	@Override
	public void setSample(int x, int y, int b, float s, DataBuffer data) {
	if (x < 0 \|\| y < 0 \|\| x >= this.width \|\| y >= this.height) {
	// awt.63=Coordinates are not in bounds
	throw new ArrayIndexOutOfBoundsException(Messages.getString("awt.63")); //$NON-NLS-1$
	}

	data.setElemFloat(bankIndices[b], y * scanlineStride + x * pixelStride + bandOffsets[b], s);
	}

	@Override
	public void setSample(int x, int y, int b, double s, DataBuffer data) {
	if (x < 0 \|\| y < 0 \|\| x >= this.width \|\| y >= this.height) {
	// awt.63=Coordinates are not in bounds
	throw new ArrayIndexOutOfBoundsException(Messages.getString("awt.63")); //$NON-NLS-1$
	}

	data
	.setElemDouble(bankIndices[b], y * scanlineStride + x * pixelStride
	+ bandOffsets[b], s);
	}

	@Override
	public DataBuffer createDataBuffer() {
	DataBuffer data = null;

	int maxOffset = bandOffsets[0];
	for (int i = 1; i < bandOffsets.length; i++) {
	if (bandOffsets[i] > maxOffset) {
	maxOffset = bandOffsets[i];
	}
	}
	int size = (height - 1) * scanlineStride + (width - 1) * pixelStride + maxOffset + 1;

	switch (dataType) {
	case DataBuffer.TYPE_BYTE:
	data = new DataBufferByte(size, numBanks);
	break;
	case DataBuffer.TYPE_SHORT:
	data = new DataBufferShort(size, numBanks);
	break;
	case DataBuffer.TYPE_USHORT:
	data = new DataBufferUShort(size, numBanks);
	break;
	case DataBuffer.TYPE_INT:
	data = new DataBufferInt(size, numBanks);
	break;
	case DataBuffer.TYPE_FLOAT:
	data = new DataBufferFloat(size, numBanks);
	break;
	case DataBuffer.TYPE_DOUBLE:
	data = new DataBufferDouble(size, numBanks);
	break;
	}

	return data;

	}

	/**
	* Gets the offset of the specified band of the specified pixel.
	*
	* @param x
	* the X coordinate of the pixel.
	* @param y
	* the Y coordinate of the pixel.
	* @param b
	* the band.
	* @return the offset of the specified band of the specified pixel.
	*/
	public int getOffset(int x, int y, int b) {
	return y * scanlineStride + x * pixelStride + bandOffsets[b];
	}

	/**
	* Gets the offset of the first band of the specified pixel.
	*
	* @param x
	* the X coordinate of pixel.
	* @param y
	* the Y coordinate of pixel.
	* @return the offset of the first band of the specified pixel.
	*/
	public int getOffset(int x, int y) {
	return y * scanlineStride + x * pixelStride + bandOffsets[0];
	}

	@Override
	public final int getSampleSize(int band) {
	return DataBuffer.getDataTypeSize(dataType);
	}

	@Override
	public final int[] getSampleSize() {
	int sampleSizes[] = new int[numBands];
	int size = DataBuffer.getDataTypeSize(dataType);

	for (int i = 0; i < numBands; i++) {
	sampleSizes[i] = size;
	}
	return sampleSizes;
	}

	/**
	* Gets an array of bank indices corresponding to this ComponentSampleModel.
	*
	* @return the array of bank indices.
	*/
	public final int[] getBankIndices() {
	return bankIndices.clone();
	}

	/**
	* Gets an array of the band offsets corresponding to this
	* ComponentSampleModel.
	*
	* @return the array of band offsets.
	*/
	public final int[] getBandOffsets() {
	return bandOffsets.clone();
	}

	/**
	* Gets a hash code of this ComponentSampleModel object.
	*
	* @return a hash code of this ComponentSampleModel object.
	*/
	@Override
	public int hashCode() {
	int hash = 0;
	int tmp = 0;

	hash = width;
	tmp = hash >>> 24;
	hash <<= 8;
	hash \|= tmp;
	hash ^= height;
	tmp = hash >>> 24;
	hash <<= 8;
	hash \|= tmp;
	hash ^= numBands;
	tmp = hash >>> 24;
	hash <<= 8;
	hash \|= tmp;
	hash ^= dataType;
	tmp = hash >>> 24;
	hash <<= 8;
	hash \|= tmp;
	for (int element : bandOffsets) {
	hash ^= element;
	tmp = hash >>> 24;
	hash <<= 8;
	hash \|= tmp;
	}
	for (int element : bankIndices) {
	hash ^= element;
	tmp = hash >>> 24;
	hash <<= 8;
	hash \|= tmp;
	}
	hash ^= pixelStride;
	tmp = hash >>> 24;
	hash <<= 8;
	hash \|= tmp;

	hash ^= scanlineStride;
	return hash;
	}

	/**
	* Gets the scanline stride of this ComponentSampleModel.
	*
	* @return the scanline stride of this ComponentSampleModel.
	*/
	public final int getScanlineStride() {
	return scanlineStride;
	}

	/**
	* Gets the pixel stride.
	*
	* @return the pixel stride.
	*/
	public final int getPixelStride() {
	return pixelStride;
	}

	@Override
	public final int getNumDataElements() {
	return numBands;
	}

	}