mirror of git://gcc.gnu.org/git/gcc.git
975 lines
34 KiB
Java
975 lines
34 KiB
Java
/* Copyright (C) 2000, 2001, 2002, 2005, 2006, Free Software Foundation
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package java.awt.image;
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/**
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* A <code>SampleModel</code> is used to access pixel data from a
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* {@link DataBuffer}. This is used by the {@link Raster} class.
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*
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* @author Rolf W. Rasmussen (rolfwr@ii.uib.no)
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*/
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public abstract class SampleModel
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{
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/** Width of image described. */
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protected int width;
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/** Height of image described. */
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protected int height;
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/** Number of bands in the image described. Package-private here,
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shadowed by ComponentSampleModel. */
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protected int numBands;
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/**
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* The DataBuffer type that is used to store the data of the image
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* described.
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*/
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protected int dataType;
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/**
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* Creates a new sample model with the specified attributes.
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*
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* @param dataType the data type (one of {@link DataBuffer#TYPE_BYTE},
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* {@link DataBuffer#TYPE_USHORT}, {@link DataBuffer#TYPE_SHORT},
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* {@link DataBuffer#TYPE_INT}, {@link DataBuffer#TYPE_FLOAT},
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* {@link DataBuffer#TYPE_DOUBLE} or {@link DataBuffer#TYPE_UNDEFINED}).
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* @param w the width in pixels (must be greater than zero).
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* @param h the height in pixels (must be greater than zero).
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* @param numBands the number of bands (must be greater than zero).
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*
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* @throws IllegalArgumentException if <code>dataType</code> is not one of
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* the listed values.
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* @throws IllegalArgumentException if <code>w</code> is less than or equal
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* to zero.
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* @throws IllegalArgumentException if <code>h</code> is less than or equal
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* to zero.
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* @throws IllegalArgumentException if <code>w * h</code> is greater than
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* {@link Integer#MAX_VALUE}.
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*/
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public SampleModel(int dataType, int w, int h, int numBands)
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{
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if (dataType != DataBuffer.TYPE_UNDEFINED)
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if (dataType < DataBuffer.TYPE_BYTE || dataType > DataBuffer.TYPE_DOUBLE)
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throw new IllegalArgumentException("Unrecognised 'dataType' argument.");
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if ((w <= 0) || (h <= 0))
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throw new IllegalArgumentException((w <= 0 ? " width<=0" : " width is ok")
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+ (h <= 0 ? " height<=0" : " height is ok"));
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long area = (long) w * (long) h;
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if (area > Integer.MAX_VALUE)
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throw new IllegalArgumentException("w * h exceeds Integer.MAX_VALUE.");
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if (numBands <= 0)
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throw new IllegalArgumentException("Requires numBands > 0.");
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this.dataType = dataType;
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this.width = w;
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this.height = h;
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this.numBands = numBands;
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}
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/**
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* Returns the width of the pixel data accessible via this
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* <code>SampleModel</code>.
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*
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* @return The width.
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*
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* @see #getHeight()
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*/
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public final int getWidth()
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{
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return width;
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}
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/**
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* Returns the height of the pixel data accessible via this
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* <code>SampleModel</code>.
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*
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* @return The height.
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*
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* @see #getWidth()
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*/
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public final int getHeight()
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{
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return height;
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}
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/**
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* Returns the number of bands for this <code>SampleModel</code>.
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*
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* @return The number of bands.
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*/
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public final int getNumBands()
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{
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return numBands;
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}
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public abstract int getNumDataElements();
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/**
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* Returns the type of the {@link DataBuffer} that this
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* <code>SampleModel</code> accesses.
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*
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* @return The data buffer type.
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*/
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public final int getDataType()
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{
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return dataType;
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}
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public int getTransferType()
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{
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// FIXME: Is this a reasonable default implementation?
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return dataType;
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}
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/**
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* Returns an array containing the samples for the pixel at (x, y) in the
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* specified data buffer. If <code>iArray</code> is not <code>null</code>,
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* it will be populated with the sample values and returned as the result of
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* this function (this avoids allocating a new array instance).
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*
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* @param x the x-coordinate of the pixel.
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* @param y the y-coordinate of the pixel.
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* @param iArray an array to populate with the sample values and return as
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* the result (if <code>null</code>, a new array will be allocated).
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* @param data the data buffer (<code>null</code> not permitted).
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*
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* @return The pixel sample values.
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*
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* @throws NullPointerException if <code>data</code> is <code>null</code>.
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*/
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public int[] getPixel(int x, int y, int[] iArray, DataBuffer data)
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{
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if (iArray == null)
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iArray = new int[numBands];
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for (int b = 0; b < numBands; b++)
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iArray[b] = getSample(x, y, b, data);
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return iArray;
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}
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/**
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*
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* This method is provided as a faster alternative to getPixel(),
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* that can be used when there is no need to decode the pixel into
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* separate sample values.
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*
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* @param obj An array to return the pixel data in. If null, an
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* array of the right type and size will be created.
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*
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* @return A single pixel as an array object of a primitive type,
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* based on the transfer type. Eg. if transfer type is
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* DataBuffer.TYPE_USHORT, then a short[] object is returned.
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*/
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public abstract Object getDataElements(int x, int y, Object obj,
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DataBuffer data);
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public Object getDataElements(int x, int y, int w, int h, Object obj,
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DataBuffer data)
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{
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int size = w * h;
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int numDataElements = getNumDataElements();
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int dataSize = numDataElements * size;
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if (obj == null)
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{
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switch (getTransferType())
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{
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case DataBuffer.TYPE_BYTE:
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obj = new byte[dataSize];
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break;
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case DataBuffer.TYPE_USHORT:
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obj = new short[dataSize];
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break;
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case DataBuffer.TYPE_INT:
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obj = new int[dataSize];
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break;
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default:
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// Seems like the only sensible thing to do.
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throw new ClassCastException();
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}
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}
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Object pixelData = null;
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int outOffset = 0;
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for (int yy = y; yy < (y + h); yy++)
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{
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for (int xx = x; xx < (x + w); xx++)
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{
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pixelData = getDataElements(xx, yy, pixelData, data);
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System.arraycopy(pixelData, 0, obj, outOffset,
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numDataElements);
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outOffset += numDataElements;
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}
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}
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return obj;
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}
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public abstract void setDataElements(int x, int y, Object obj,
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DataBuffer data);
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public void setDataElements(int x, int y, int w, int h,
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Object obj, DataBuffer data)
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{
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int numDataElements = getNumDataElements();
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Object pixelData;
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switch (getTransferType())
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{
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case DataBuffer.TYPE_BYTE:
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pixelData = new byte[numDataElements];
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break;
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case DataBuffer.TYPE_USHORT:
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case DataBuffer.TYPE_SHORT:
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pixelData = new short[numDataElements];
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break;
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case DataBuffer.TYPE_INT:
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pixelData = new int[numDataElements];
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break;
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case DataBuffer.TYPE_FLOAT:
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pixelData = new float[numDataElements];
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break;
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case DataBuffer.TYPE_DOUBLE:
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pixelData = new double[numDataElements];
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break;
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default:
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// The RI silently igores invalid types.
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pixelData = null;
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}
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int inOffset = 0;
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if (pixelData != null)
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{
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for (int yy=y; yy<(y+h); yy++)
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{
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for (int xx=x; xx<(x+w); xx++)
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{
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System.arraycopy(obj, inOffset, pixelData, 0, numDataElements);
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setDataElements(xx, yy, pixelData, data);
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inOffset += numDataElements;
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}
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}
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}
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}
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/**
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* Returns an array containing the samples for the pixel at (x, y) in the
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* specified data buffer. If <code>fArray</code> is not <code>null</code>,
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* it will be populated with the sample values and returned as the result of
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* this function (this avoids allocating a new array instance).
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*
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* @param x the x-coordinate of the pixel.
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* @param y the y-coordinate of the pixel.
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* @param fArray an array to populate with the sample values and return as
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* the result (if <code>null</code>, a new array will be allocated).
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* @param data the data buffer (<code>null</code> not permitted).
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*
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* @return The pixel sample values.
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*
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* @throws NullPointerException if <code>data</code> is <code>null</code>.
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*/
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public float[] getPixel(int x, int y, float[] fArray, DataBuffer data)
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{
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if (fArray == null)
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fArray = new float[numBands];
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for (int b = 0; b < numBands; b++)
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{
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fArray[b] = getSampleFloat(x, y, b, data);
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}
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return fArray;
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}
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/**
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* Returns an array containing the samples for the pixel at (x, y) in the
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* specified data buffer. If <code>dArray</code> is not <code>null</code>,
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* it will be populated with the sample values and returned as the result of
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* this function (this avoids allocating a new array instance).
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*
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* @param x the x-coordinate of the pixel.
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* @param y the y-coordinate of the pixel.
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* @param dArray an array to populate with the sample values and return as
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* the result (if <code>null</code>, a new array will be allocated).
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* @param data the data buffer (<code>null</code> not permitted).
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*
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* @return The pixel sample values.
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*
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* @throws NullPointerException if <code>data</code> is <code>null</code>.
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*/
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public double[] getPixel(int x, int y, double[] dArray, DataBuffer data) {
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if (dArray == null)
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dArray = new double[numBands];
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for (int b = 0; b < numBands; b++)
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{
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dArray[b] = getSampleDouble(x, y, b, data);
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}
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return dArray;
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}
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/**
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* Returns an array containing the samples for the pixels in the region
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* specified by (x, y, w, h) in the specified data buffer. The array is
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* ordered by pixels (that is, all the samples for the first pixel are
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* grouped together, followed by all the samples for the second pixel, and so
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* on). If <code>iArray</code> is not <code>null</code>, it will be
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* populated with the sample values and returned as the result of this
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* function (this avoids allocating a new array instance).
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*
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* @param x the x-coordinate of the top-left pixel.
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* @param y the y-coordinate of the top-left pixel.
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* @param w the width of the region of pixels.
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* @param h the height of the region of pixels.
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* @param iArray an array to populate with the sample values and return as
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* the result (if <code>null</code>, a new array will be allocated).
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* @param data the data buffer (<code>null</code> not permitted).
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*
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* @return The pixel sample values.
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*
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* @throws NullPointerException if <code>data</code> is <code>null</code>.
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*/
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public int[] getPixels(int x, int y, int w, int h, int[] iArray,
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DataBuffer data)
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{
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int size = w * h;
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int outOffset = 0;
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int[] pixel = null;
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if (iArray == null)
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iArray = new int[w * h * numBands];
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for (int yy = y; yy < (y + h); yy++)
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{
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for (int xx = x; xx < (x + w); xx++)
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{
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pixel = getPixel(xx, yy, pixel, data);
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System.arraycopy(pixel, 0, iArray, outOffset, numBands);
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outOffset += numBands;
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}
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}
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return iArray;
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}
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/**
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* Returns an array containing the samples for the pixels in the region
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* specified by (x, y, w, h) in the specified data buffer. The array is
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* ordered by pixels (that is, all the samples for the first pixel are
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* grouped together, followed by all the samples for the second pixel, and so
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* on). If <code>fArray</code> is not <code>null</code>, it will be
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* populated with the sample values and returned as the result of this
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* function (this avoids allocating a new array instance).
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*
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* @param x the x-coordinate of the top-left pixel.
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* @param y the y-coordinate of the top-left pixel.
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* @param w the width of the region of pixels.
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* @param h the height of the region of pixels.
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* @param fArray an array to populate with the sample values and return as
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* the result (if <code>null</code>, a new array will be allocated).
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* @param data the data buffer (<code>null</code> not permitted).
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*
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* @return The pixel sample values.
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*
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* @throws NullPointerException if <code>data</code> is <code>null</code>.
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*/
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public float[] getPixels(int x, int y, int w, int h, float[] fArray,
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DataBuffer data)
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{
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int size = w * h;
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int outOffset = 0;
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float[] pixel = null;
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if (fArray == null) fArray = new float[w * h * numBands];
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for (int yy = y; yy < (y + h); yy++)
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{
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for (int xx = x; xx < (x + w); xx++)
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{
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pixel = getPixel(xx, yy, pixel, data);
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System.arraycopy(pixel, 0, fArray, outOffset, numBands);
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outOffset += numBands;
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}
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}
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return fArray;
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}
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/**
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* Returns an array containing the samples for the pixels in the region
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* specified by (x, y, w, h) in the specified data buffer. The array is
|
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* ordered by pixels (that is, all the samples for the first pixel are
|
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* grouped together, followed by all the samples for the second pixel, and so
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* on). If <code>dArray</code> is not <code>null</code>, it will be
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* populated with the sample values and returned as the result of this
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* function (this avoids allocating a new array instance).
|
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*
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* @param x the x-coordinate of the top-left pixel.
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* @param y the y-coordinate of the top-left pixel.
|
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* @param w the width of the region of pixels.
|
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* @param h the height of the region of pixels.
|
|
* @param dArray an array to populate with the sample values and return as
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* the result (if <code>null</code>, a new array will be allocated).
|
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* @param data the data buffer (<code>null</code> not permitted).
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*
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* @return The pixel sample values.
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*
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* @throws NullPointerException if <code>data</code> is <code>null</code>.
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*/
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public double[] getPixels(int x, int y, int w, int h, double[] dArray,
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DataBuffer data)
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{
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int size = w * h;
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int outOffset = 0;
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double[] pixel = null;
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if (dArray == null)
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dArray = new double[w * h * numBands];
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for (int yy = y; yy < (y + h); yy++)
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{
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for (int xx = x; xx < (x + w); xx++)
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{
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pixel = getPixel(xx, yy, pixel, data);
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System.arraycopy(pixel, 0, dArray, outOffset, numBands);
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outOffset += numBands;
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}
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}
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return dArray;
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}
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|
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/**
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* Returns the sample value for the pixel at (x, y) in the specified data
|
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* buffer.
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|
*
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* @param x the x-coordinate of the pixel.
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* @param y the y-coordinate of the pixel.
|
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* @param b the band (in the range <code>0</code> to
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* <code>getNumBands() - 1</code>).
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* @param data the data buffer (<code>null</code> not permitted).
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*
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* @return The sample value.
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*
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* @throws NullPointerException if <code>data</code> is <code>null</code>.
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*/
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public abstract int getSample(int x, int y, int b, DataBuffer data);
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|
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/**
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* Returns the sample value for the pixel at (x, y) in the specified data
|
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* buffer.
|
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*
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* @param x the x-coordinate of the pixel.
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* @param y the y-coordinate of the pixel.
|
|
* @param b the band (in the range <code>0</code> to
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* <code>getNumBands() - 1</code>).
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* @param data the data buffer (<code>null</code> not permitted).
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*
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* @return The sample value.
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*
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* @throws NullPointerException if <code>data</code> is <code>null</code>.
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*
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* @see #getSample(int, int, int, DataBuffer)
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*/
|
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public float getSampleFloat(int x, int y, int b, DataBuffer data)
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{
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return getSample(x, y, b, data);
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}
|
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|
|
/**
|
|
* Returns the sample value for the pixel at (x, y) in the specified data
|
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* buffer.
|
|
*
|
|
* @param x the x-coordinate of the pixel.
|
|
* @param y the y-coordinate of the pixel.
|
|
* @param b the band (in the range <code>0</code> to
|
|
* <code>getNumBands() - 1</code>).
|
|
* @param data the data buffer (<code>null</code> not permitted).
|
|
*
|
|
* @return The sample value.
|
|
*
|
|
* @throws NullPointerException if <code>data</code> is <code>null</code>.
|
|
*
|
|
* @see #getSample(int, int, int, DataBuffer)
|
|
*/
|
|
public double getSampleDouble(int x, int y, int b, DataBuffer data)
|
|
{
|
|
return getSampleFloat(x, y, b, data);
|
|
}
|
|
|
|
/**
|
|
* Returns an array containing the samples from one band for the pixels in
|
|
* the region specified by (x, y, w, h) in the specified data buffer. If
|
|
* <code>iArray</code> is not <code>null</code>, it will be
|
|
* populated with the sample values and returned as the result of this
|
|
* function (this avoids allocating a new array instance).
|
|
*
|
|
* @param x the x-coordinate of the top-left pixel.
|
|
* @param y the y-coordinate of the top-left pixel.
|
|
* @param w the width of the region of pixels.
|
|
* @param h the height of the region of pixels.
|
|
* @param b the band (in the range <code>0</code> to
|
|
* </code>getNumBands() - 1</code>).
|
|
* @param iArray an array to populate with the sample values and return as
|
|
* the result (if <code>null</code>, a new array will be allocated).
|
|
* @param data the data buffer (<code>null</code> not permitted).
|
|
*
|
|
* @return The sample values.
|
|
*
|
|
* @throws NullPointerException if <code>data</code> is <code>null</code>.
|
|
*/
|
|
public int[] getSamples(int x, int y, int w, int h, int b,
|
|
int[] iArray, DataBuffer data)
|
|
{
|
|
int size = w * h;
|
|
int outOffset = 0;
|
|
if (iArray == null)
|
|
iArray = new int[size];
|
|
for (int yy = y; yy < (y + h); yy++)
|
|
{
|
|
for (int xx = x; xx < (x + w); xx++)
|
|
{
|
|
iArray[outOffset++] = getSample(xx, yy, b, data);
|
|
}
|
|
}
|
|
return iArray;
|
|
}
|
|
|
|
/**
|
|
* Returns an array containing the samples from one band for the pixels in
|
|
* the region specified by (x, y, w, h) in the specified data buffer. If
|
|
* <code>fArray</code> is not <code>null</code>, it will be
|
|
* populated with the sample values and returned as the result of this
|
|
* function (this avoids allocating a new array instance).
|
|
*
|
|
* @param x the x-coordinate of the top-left pixel.
|
|
* @param y the y-coordinate of the top-left pixel.
|
|
* @param w the width of the region of pixels.
|
|
* @param h the height of the region of pixels.
|
|
* @param b the band (in the range <code>0</code> to
|
|
* </code>getNumBands() - 1</code>).
|
|
* @param fArray an array to populate with the sample values and return as
|
|
* the result (if <code>null</code>, a new array will be allocated).
|
|
* @param data the data buffer (<code>null</code> not permitted).
|
|
*
|
|
* @return The sample values.
|
|
*
|
|
* @throws NullPointerException if <code>data</code> is <code>null</code>.
|
|
*/
|
|
public float[] getSamples(int x, int y, int w, int h, int b,
|
|
float[] fArray, DataBuffer data)
|
|
{
|
|
int size = w * h;
|
|
int outOffset = 0;
|
|
if (fArray == null)
|
|
fArray = new float[size];
|
|
for (int yy = y; yy < (y + h); yy++)
|
|
{
|
|
for (int xx = x; xx < (x + w); xx++)
|
|
{
|
|
fArray[outOffset++] = getSampleFloat(xx, yy, b, data);
|
|
}
|
|
}
|
|
return fArray;
|
|
}
|
|
|
|
/**
|
|
* Returns an array containing the samples from one band for the pixels in
|
|
* the region specified by (x, y, w, h) in the specified data buffer. If
|
|
* <code>dArray</code> is not <code>null</code>, it will be
|
|
* populated with the sample values and returned as the result of this
|
|
* function (this avoids allocating a new array instance).
|
|
*
|
|
* @param x the x-coordinate of the top-left pixel.
|
|
* @param y the y-coordinate of the top-left pixel.
|
|
* @param w the width of the region of pixels.
|
|
* @param h the height of the region of pixels.
|
|
* @param b the band (in the range <code>0</code> to
|
|
* </code>getNumBands() - 1</code>).
|
|
* @param dArray an array to populate with the sample values and return as
|
|
* the result (if <code>null</code>, a new array will be allocated).
|
|
* @param data the data buffer (<code>null</code> not permitted).
|
|
*
|
|
* @return The sample values.
|
|
*
|
|
* @throws NullPointerException if <code>data</code> is <code>null</code>.
|
|
*/
|
|
public double[] getSamples(int x, int y, int w, int h, int b,
|
|
double[] dArray, DataBuffer data)
|
|
{
|
|
int size = w * h;
|
|
int outOffset = 0;
|
|
if (dArray == null)
|
|
dArray = new double[size];
|
|
for (int yy = y; yy < (y + h); yy++)
|
|
{
|
|
for (int xx = x; xx < (x + w); xx++)
|
|
{
|
|
dArray[outOffset++] = getSampleDouble(xx, yy, b, data);
|
|
}
|
|
}
|
|
return dArray;
|
|
}
|
|
|
|
/**
|
|
* Sets the samples for the pixel at (x, y) in the specified data buffer to
|
|
* the specified values.
|
|
*
|
|
* @param x the x-coordinate of the pixel.
|
|
* @param y the y-coordinate of the pixel.
|
|
* @param iArray the sample values (<code>null</code> not permitted).
|
|
* @param data the data buffer (<code>null</code> not permitted).
|
|
*
|
|
* @throws NullPointerException if either <code>iArray</code> or
|
|
* <code>data</code> is <code>null</code>.
|
|
*/
|
|
public void setPixel(int x, int y, int[] iArray, DataBuffer data)
|
|
{
|
|
for (int b = 0; b < numBands; b++)
|
|
setSample(x, y, b, iArray[b], data);
|
|
}
|
|
|
|
/**
|
|
* Sets the samples for the pixel at (x, y) in the specified data buffer to
|
|
* the specified values.
|
|
*
|
|
* @param x the x-coordinate of the pixel.
|
|
* @param y the y-coordinate of the pixel.
|
|
* @param fArray the sample values (<code>null</code> not permitted).
|
|
* @param data the data buffer (<code>null</code> not permitted).
|
|
*
|
|
* @throws NullPointerException if either <code>fArray</code> or
|
|
* <code>data</code> is <code>null</code>.
|
|
*/
|
|
public void setPixel(int x, int y, float[] fArray, DataBuffer data)
|
|
{
|
|
for (int b = 0; b < numBands; b++)
|
|
setSample(x, y, b, fArray[b], data);
|
|
}
|
|
|
|
/**
|
|
* Sets the samples for the pixel at (x, y) in the specified data buffer to
|
|
* the specified values.
|
|
*
|
|
* @param x the x-coordinate of the pixel.
|
|
* @param y the y-coordinate of the pixel.
|
|
* @param dArray the sample values (<code>null</code> not permitted).
|
|
* @param data the data buffer (<code>null</code> not permitted).
|
|
*
|
|
* @throws NullPointerException if either <code>dArray</code> or
|
|
* <code>data</code> is <code>null</code>.
|
|
*/
|
|
public void setPixel(int x, int y, double[] dArray, DataBuffer data)
|
|
{
|
|
for (int b = 0; b < numBands; b++)
|
|
setSample(x, y, b, dArray[b], data);
|
|
}
|
|
|
|
/**
|
|
* Sets the sample values for the pixels in the region specified by
|
|
* (x, y, w, h) in the specified data buffer. The array is
|
|
* ordered by pixels (that is, all the samples for the first pixel are
|
|
* grouped together, followed by all the samples for the second pixel, and so
|
|
* on).
|
|
*
|
|
* @param x the x-coordinate of the top-left pixel.
|
|
* @param y the y-coordinate of the top-left pixel.
|
|
* @param w the width of the region of pixels.
|
|
* @param h the height of the region of pixels.
|
|
* @param iArray the pixel sample values (<code>null</code> not permitted).
|
|
* @param data the data buffer (<code>null</code> not permitted).
|
|
*
|
|
* @throws NullPointerException if either <code>iArray</code> or
|
|
* <code>data</code> is <code>null</code>.
|
|
*/
|
|
public void setPixels(int x, int y, int w, int h, int[] iArray,
|
|
DataBuffer data)
|
|
{
|
|
int inOffset = 0;
|
|
int[] pixel = new int[numBands];
|
|
for (int yy = y; yy < (y + h); yy++)
|
|
{
|
|
for (int xx = x; xx < (x + w); xx++)
|
|
{
|
|
System.arraycopy(iArray, inOffset, pixel, 0, numBands);
|
|
setPixel(xx, yy, pixel, data);
|
|
inOffset += numBands;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Sets the sample values for the pixels in the region specified by
|
|
* (x, y, w, h) in the specified data buffer. The array is
|
|
* ordered by pixels (that is, all the samples for the first pixel are
|
|
* grouped together, followed by all the samples for the second pixel, and so
|
|
* on).
|
|
*
|
|
* @param x the x-coordinate of the top-left pixel.
|
|
* @param y the y-coordinate of the top-left pixel.
|
|
* @param w the width of the region of pixels.
|
|
* @param h the height of the region of pixels.
|
|
* @param fArray the pixel sample values (<code>null</code> not permitted).
|
|
* @param data the data buffer (<code>null</code> not permitted).
|
|
*
|
|
* @throws NullPointerException if either <code>fArray</code> or
|
|
* <code>data</code> is <code>null</code>.
|
|
*/
|
|
public void setPixels(int x, int y, int w, int h, float[] fArray,
|
|
DataBuffer data)
|
|
{
|
|
int inOffset = 0;
|
|
float[] pixel = new float[numBands];
|
|
for (int yy = y; yy < (y + h); yy++)
|
|
{
|
|
for (int xx = x; xx < (x + w); xx++)
|
|
{
|
|
System.arraycopy(fArray, inOffset, pixel, 0, numBands);
|
|
setPixel(xx, yy, pixel, data);
|
|
inOffset += numBands;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Sets the sample values for the pixels in the region specified by
|
|
* (x, y, w, h) in the specified data buffer. The array is
|
|
* ordered by pixels (that is, all the samples for the first pixel are
|
|
* grouped together, followed by all the samples for the second pixel, and so
|
|
* on).
|
|
*
|
|
* @param x the x-coordinate of the top-left pixel.
|
|
* @param y the y-coordinate of the top-left pixel.
|
|
* @param w the width of the region of pixels.
|
|
* @param h the height of the region of pixels.
|
|
* @param dArray the pixel sample values (<code>null</code> not permitted).
|
|
* @param data the data buffer (<code>null</code> not permitted).
|
|
*
|
|
* @throws NullPointerException if either <code>dArray</code> or
|
|
* <code>data</code> is <code>null</code>.
|
|
*/
|
|
public void setPixels(int x, int y, int w, int h, double[] dArray,
|
|
DataBuffer data)
|
|
{
|
|
int inOffset = 0;
|
|
double[] pixel = new double[numBands];
|
|
for (int yy = y; yy < (y + h); yy++)
|
|
{
|
|
for (int xx = x; xx < (x + w); xx++)
|
|
{
|
|
System.arraycopy(dArray, inOffset, pixel, 0, numBands);
|
|
setPixel(xx, yy, pixel, data);
|
|
inOffset += numBands;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Sets the sample value for a band for the pixel at (x, y) in the
|
|
* specified data buffer.
|
|
*
|
|
* @param x the x-coordinate of the pixel.
|
|
* @param y the y-coordinate of the pixel.
|
|
* @param b the band (in the range <code>0</code> to
|
|
* <code>getNumBands() - 1</code>).
|
|
* @param s the sample value.
|
|
* @param data the data buffer (<code>null</code> not permitted).
|
|
*
|
|
* @throws NullPointerException if <code>data</code> is <code>null</code>.
|
|
*/
|
|
public abstract void setSample(int x, int y, int b, int s,
|
|
DataBuffer data);
|
|
|
|
/**
|
|
* Sets the sample value for a band for the pixel at (x, y) in the
|
|
* specified data buffer.
|
|
*
|
|
* @param x the x-coordinate of the pixel.
|
|
* @param y the y-coordinate of the pixel.
|
|
* @param b the band (in the range <code>0</code> to
|
|
* <code>getNumBands() - 1</code>).
|
|
* @param s the sample value.
|
|
* @param data the data buffer (<code>null</code> not permitted).
|
|
*
|
|
* @throws NullPointerException if <code>data</code> is <code>null</code>.
|
|
*/
|
|
public void setSample(int x, int y, int b, float s,
|
|
DataBuffer data)
|
|
{
|
|
setSample(x, y, b, (int) s, data);
|
|
}
|
|
|
|
/**
|
|
* Sets the sample value for a band for the pixel at (x, y) in the
|
|
* specified data buffer.
|
|
*
|
|
* @param x the x-coordinate of the pixel.
|
|
* @param y the y-coordinate of the pixel.
|
|
* @param b the band (in the range <code>0</code> to
|
|
* <code>getNumBands() - 1</code>).
|
|
* @param s the sample value.
|
|
* @param data the data buffer (<code>null</code> not permitted).
|
|
*
|
|
* @throws NullPointerException if <code>data</code> is <code>null</code>.
|
|
*/
|
|
public void setSample(int x, int y, int b, double s,
|
|
DataBuffer data)
|
|
{
|
|
setSample(x, y, b, (float) s, data);
|
|
}
|
|
|
|
/**
|
|
* Sets the sample values for one band for the pixels in the region
|
|
* specified by (x, y, w, h) in the specified data buffer.
|
|
*
|
|
* @param x the x-coordinate of the top-left pixel.
|
|
* @param y the y-coordinate of the top-left pixel.
|
|
* @param w the width of the region of pixels.
|
|
* @param h the height of the region of pixels.
|
|
* @param b the band (in the range <code>0</code> to
|
|
* </code>getNumBands() - 1</code>).
|
|
* @param iArray the sample values (<code>null</code> not permitted).
|
|
* @param data the data buffer (<code>null</code> not permitted).
|
|
*
|
|
* @throws NullPointerException if either <code>iArray</code> or
|
|
* <code>data</code> is <code>null</code>.
|
|
*/
|
|
public void setSamples(int x, int y, int w, int h, int b,
|
|
int[] iArray, DataBuffer data)
|
|
{
|
|
int size = w * h;
|
|
int inOffset = 0;
|
|
for (int yy = y; yy < (y + h); yy++)
|
|
for (int xx = x; xx < (x + w); xx++)
|
|
setSample(xx, yy, b, iArray[inOffset++], data);
|
|
}
|
|
|
|
/**
|
|
* Sets the sample values for one band for the pixels in the region
|
|
* specified by (x, y, w, h) in the specified data buffer.
|
|
*
|
|
* @param x the x-coordinate of the top-left pixel.
|
|
* @param y the y-coordinate of the top-left pixel.
|
|
* @param w the width of the region of pixels.
|
|
* @param h the height of the region of pixels.
|
|
* @param b the band (in the range <code>0</code> to
|
|
* </code>getNumBands() - 1</code>).
|
|
* @param fArray the sample values (<code>null</code> not permitted).
|
|
* @param data the data buffer (<code>null</code> not permitted).
|
|
*
|
|
* @throws NullPointerException if either <code>iArray</code> or
|
|
* <code>data</code> is <code>null</code>.
|
|
*/
|
|
public void setSamples(int x, int y, int w, int h, int b,
|
|
float[] fArray, DataBuffer data)
|
|
{
|
|
int size = w * h;
|
|
int inOffset = 0;
|
|
for (int yy = y; yy < (y + h); yy++)
|
|
for (int xx = x; xx < (x + w); xx++)
|
|
setSample(xx, yy, b, fArray[inOffset++], data);
|
|
|
|
}
|
|
|
|
/**
|
|
* Sets the sample values for one band for the pixels in the region
|
|
* specified by (x, y, w, h) in the specified data buffer.
|
|
*
|
|
* @param x the x-coordinate of the top-left pixel.
|
|
* @param y the y-coordinate of the top-left pixel.
|
|
* @param w the width of the region of pixels.
|
|
* @param h the height of the region of pixels.
|
|
* @param b the band (in the range <code>0</code> to
|
|
* </code>getNumBands() - 1</code>).
|
|
* @param dArray the sample values (<code>null</code> not permitted).
|
|
* @param data the data buffer (<code>null</code> not permitted).
|
|
*
|
|
* @throws NullPointerException if either <code>iArray</code> or
|
|
* <code>data</code> is <code>null</code>.
|
|
*/
|
|
public void setSamples(int x, int y, int w, int h, int b,
|
|
double[] dArray, DataBuffer data) {
|
|
int size = w * h;
|
|
int inOffset = 0;
|
|
for (int yy = y; yy < (y + h); yy++)
|
|
for (int xx = x; xx < (x + w); xx++)
|
|
setSample(xx, yy, b, dArray[inOffset++], data);
|
|
}
|
|
|
|
/**
|
|
* Creates a new <code>SampleModel</code> that is compatible with this
|
|
* model and has the specified width and height.
|
|
*
|
|
* @param w the width (in pixels).
|
|
* @param h the height (in pixels).
|
|
*
|
|
* @return The new sample model.
|
|
*/
|
|
public abstract SampleModel createCompatibleSampleModel(int w, int h);
|
|
|
|
/**
|
|
* Return a SampleModel with a subset of the bands in this model.
|
|
*
|
|
* Selects bands.length bands from this sample model. The bands chosen
|
|
* are specified in the indices of bands[]. This also permits permuting
|
|
* the bands as well as taking a subset. Thus, giving an array with
|
|
* 1, 2, 3, ..., numbands, will give an identical sample model.
|
|
*
|
|
* @param bands Array with band indices to include.
|
|
* @return A new sample model
|
|
*/
|
|
public abstract SampleModel createSubsetSampleModel(int[] bands);
|
|
|
|
/**
|
|
* Creates a new {@link DataBuffer} of the correct type and size for this
|
|
* <code>SampleModel</code>.
|
|
*
|
|
* @return The data buffer.
|
|
*/
|
|
public abstract DataBuffer createDataBuffer();
|
|
|
|
/**
|
|
* Returns an array containing the size (in bits) for each band accessed by
|
|
* the <code>SampleModel</code>.
|
|
*
|
|
* @return An array.
|
|
*
|
|
* @see #getSampleSize(int)
|
|
*/
|
|
public abstract int[] getSampleSize();
|
|
|
|
/**
|
|
* Returns the size (in bits) of the samples for the specified band.
|
|
*
|
|
* @param band the band (in the range <code>0</code> to
|
|
* <code>getNumBands() - 1</code>).
|
|
*
|
|
* @return The sample size (in bits).
|
|
*/
|
|
public abstract int getSampleSize(int band);
|
|
}
|