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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/classpath/java/awt/image/SampleModel.java
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+/* Copyright (C) 2000, 2001, 2002, 2005, 2006, Free Software Foundation
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING. If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library. Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module. An independent module is a module which is not derived from
+or based on this library. If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so. If you do not wish to do so, delete this
+exception statement from your version. */
+
+package java.awt.image;
+
+/**
+ * A <code>SampleModel</code> is used to access pixel data from a
+ * {@link DataBuffer}. This is used by the {@link Raster} class.
+ *
+ * @author Rolf W. Rasmussen (rolfwr@ii.uib.no)
+ */
+public abstract class SampleModel
+{
+ /** Width of image described. */
+ protected int width;
+
+ /** Height of image described. */
+ protected int height;
+
+ /** Number of bands in the image described. Package-private here,
+ shadowed by ComponentSampleModel. */
+ protected int numBands;
+
+ /**
+ * The DataBuffer type that is used to store the data of the image
+ * described.
+ */
+ protected int dataType;
+
+ /**
+ * Creates a new sample model with the specified attributes.
+ *
+ * @param dataType the data type (one of {@link DataBuffer#TYPE_BYTE},
+ * {@link DataBuffer#TYPE_USHORT}, {@link DataBuffer#TYPE_SHORT},
+ * {@link DataBuffer#TYPE_INT}, {@link DataBuffer#TYPE_FLOAT},
+ * {@link DataBuffer#TYPE_DOUBLE} or {@link DataBuffer#TYPE_UNDEFINED}).
+ * @param w the width in pixels (must be greater than zero).
+ * @param h the height in pixels (must be greater than zero).
+ * @param numBands the number of bands (must be greater than zero).
+ *
+ * @throws IllegalArgumentException if <code>dataType</code> is not one of
+ * the listed values.
+ * @throws IllegalArgumentException if <code>w</code> is less than or equal
+ * to zero.
+ * @throws IllegalArgumentException if <code>h</code> is less than or equal
+ * to zero.
+ * @throws IllegalArgumentException if <code>w * h</code> is greater than
+ * {@link Integer#MAX_VALUE}.
+ */
+ public SampleModel(int dataType, int w, int h, int numBands)
+ {
+ if (dataType != DataBuffer.TYPE_UNDEFINED)
+ if (dataType < DataBuffer.TYPE_BYTE || dataType > DataBuffer.TYPE_DOUBLE)
+ throw new IllegalArgumentException("Unrecognised 'dataType' argument.");
+
+ if ((w <= 0) || (h <= 0))
+ throw new IllegalArgumentException((w <= 0 ? " width<=0" : " width is ok")
+ + (h <= 0 ? " height<=0" : " height is ok"));
+
+ long area = (long) w * (long) h;
+ if (area > Integer.MAX_VALUE)
+ throw new IllegalArgumentException("w * h exceeds Integer.MAX_VALUE.");
+
+ if (numBands <= 0)
+ throw new IllegalArgumentException("Requires numBands > 0.");
+
+ this.dataType = dataType;
+ this.width = w;
+ this.height = h;
+ this.numBands = numBands;
+ }
+
+ /**
+ * Returns the width of the pixel data accessible via this
+ * <code>SampleModel</code>.
+ *
+ * @return The width.
+ *
+ * @see #getHeight()
+ */
+ public final int getWidth()
+ {
+ return width;
+ }
+
+ /**
+ * Returns the height of the pixel data accessible via this
+ * <code>SampleModel</code>.
+ *
+ * @return The height.
+ *
+ * @see #getWidth()
+ */
+ public final int getHeight()
+ {
+ return height;
+ }
+
+ /**
+ * Returns the number of bands for this <code>SampleModel</code>.
+ *
+ * @return The number of bands.
+ */
+ public final int getNumBands()
+ {
+ return numBands;
+ }
+
+ public abstract int getNumDataElements();
+
+ /**
+ * Returns the type of the {@link DataBuffer} that this
+ * <code>SampleModel</code> accesses.
+ *
+ * @return The data buffer type.
+ */
+ public final int getDataType()
+ {
+ return dataType;
+ }
+
+ public int getTransferType()
+ {
+ // FIXME: Is this a reasonable default implementation?
+ return dataType;
+ }
+
+ /**
+ * Returns an array containing the samples for the pixel at (x, y) 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 pixel.
+ * @param y the y-coordinate of the pixel.
+ * @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 pixel sample values.
+ *
+ * @throws NullPointerException if <code>data</code> is <code>null</code>.
+ */
+ public int[] getPixel(int x, int y, int[] iArray, DataBuffer data)
+ {
+ if (iArray == null)
+ iArray = new int[numBands];
+ for (int b = 0; b < numBands; b++)
+ iArray[b] = getSample(x, y, b, data);
+ return iArray;
+ }
+
+ /**
+ *
+ * This method is provided as a faster alternative to getPixel(),
+ * that can be used when there is no need to decode the pixel into
+ * separate sample values.
+ *
+ * @param obj An array to return the pixel data in. If null, an
+ * array of the right type and size will be created.
+ *
+ * @return A single pixel as an array object of a primitive type,
+ * based on the transfer type. Eg. if transfer type is
+ * DataBuffer.TYPE_USHORT, then a short[] object is returned.
+ */
+ public abstract Object getDataElements(int x, int y, Object obj,
+ DataBuffer data);
+
+
+ public Object getDataElements(int x, int y, int w, int h, Object obj,
+ DataBuffer data)
+ {
+ int size = w * h;
+ int numDataElements = getNumDataElements();
+ int dataSize = numDataElements * size;
+
+ if (obj == null)
+ {
+ switch (getTransferType())
+ {
+ case DataBuffer.TYPE_BYTE:
+ obj = new byte[dataSize];
+ break;
+ case DataBuffer.TYPE_USHORT:
+ obj = new short[dataSize];
+ break;
+ case DataBuffer.TYPE_INT:
+ obj = new int[dataSize];
+ break;
+ default:
+ // Seems like the only sensible thing to do.
+ throw new ClassCastException();
+ }
+ }
+ Object pixelData = null;
+ int outOffset = 0;
+ for (int yy = y; yy < (y + h); yy++)
+ {
+ for (int xx = x; xx < (x + w); xx++)
+ {
+ pixelData = getDataElements(xx, yy, pixelData, data);
+ System.arraycopy(pixelData, 0, obj, outOffset,
+ numDataElements);
+ outOffset += numDataElements;
+ }
+ }
+ return obj;
+ }
+
+ public abstract void setDataElements(int x, int y, Object obj,
+ DataBuffer data);
+
+ public void setDataElements(int x, int y, int w, int h,
+ Object obj, DataBuffer data)
+ {
+ int numDataElements = getNumDataElements();
+
+ Object pixelData;
+ switch (getTransferType())
+ {
+ case DataBuffer.TYPE_BYTE:
+ pixelData = new byte[numDataElements];
+ break;
+ case DataBuffer.TYPE_USHORT:
+ case DataBuffer.TYPE_SHORT:
+ pixelData = new short[numDataElements];
+ break;
+ case DataBuffer.TYPE_INT:
+ pixelData = new int[numDataElements];
+ break;
+ case DataBuffer.TYPE_FLOAT:
+ pixelData = new float[numDataElements];
+ break;
+ case DataBuffer.TYPE_DOUBLE:
+ pixelData = new double[numDataElements];
+ break;
+ default:
+ // The RI silently igores invalid types.
+ pixelData = null;
+ }
+
+ int inOffset = 0;
+ if (pixelData != null)
+ {
+ for (int yy=y; yy<(y+h); yy++)
+ {
+ for (int xx=x; xx<(x+w); xx++)
+ {
+ System.arraycopy(obj, inOffset, pixelData, 0, numDataElements);
+ setDataElements(xx, yy, pixelData, data);
+ inOffset += numDataElements;
+ }
+ }
+ }
+ }
+
+ /**
+ * Returns an array containing the samples for the pixel at (x, y) 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 pixel.
+ * @param y the y-coordinate of the pixel.
+ * @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 pixel sample values.
+ *
+ * @throws NullPointerException if <code>data</code> is <code>null</code>.
+ */
+ public float[] getPixel(int x, int y, float[] fArray, DataBuffer data)
+ {
+ if (fArray == null)
+ fArray = new float[numBands];
+
+ for (int b = 0; b < numBands; b++)
+ {
+ fArray[b] = getSampleFloat(x, y, b, data);
+ }
+ return fArray;
+ }
+
+ /**
+ * Returns an array containing the samples for the pixel at (x, y) 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 pixel.
+ * @param y the y-coordinate of the pixel.
+ * @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 pixel sample values.
+ *
+ * @throws NullPointerException if <code>data</code> is <code>null</code>.
+ */
+ public double[] getPixel(int x, int y, double[] dArray, DataBuffer data) {
+ if (dArray == null)
+ dArray = new double[numBands];
+ for (int b = 0; b < numBands; b++)
+ {
+ dArray[b] = getSampleDouble(x, y, b, data);
+ }
+ return dArray;
+ }
+
+ /**
+ * Returns an array containing the samples 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). 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 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 pixel sample values.
+ *
+ * @throws NullPointerException if <code>data</code> is <code>null</code>.
+ */
+ public int[] getPixels(int x, int y, int w, int h, int[] iArray,
+ DataBuffer data)
+ {
+ int size = w * h;
+ int outOffset = 0;
+ int[] pixel = null;
+ if (iArray == null)
+ iArray = new int[w * h * numBands];
+ for (int yy = y; yy < (y + h); yy++)
+ {
+ for (int xx = x; xx < (x + w); xx++)
+ {
+ pixel = getPixel(xx, yy, pixel, data);
+ System.arraycopy(pixel, 0, iArray, outOffset, numBands);
+ outOffset += numBands;
+ }
+ }
+ return iArray;
+ }
+
+ /**
+ * Returns an array containing the samples 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). 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 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 pixel sample values.
+ *
+ * @throws NullPointerException if <code>data</code> is <code>null</code>.
+ */
+ public float[] getPixels(int x, int y, int w, int h, float[] fArray,
+ DataBuffer data)
+ {
+ int size = w * h;
+ int outOffset = 0;
+ float[] pixel = null;
+ if (fArray == null) fArray = new float[w * h * numBands];
+ for (int yy = y; yy < (y + h); yy++)
+ {
+ for (int xx = x; xx < (x + w); xx++)
+ {
+ pixel = getPixel(xx, yy, pixel, data);
+ System.arraycopy(pixel, 0, fArray, outOffset, numBands);
+ outOffset += numBands;
+ }
+ }
+ return fArray;
+ }
+
+ /**
+ * Returns an array containing the samples 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). 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 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 pixel sample values.
+ *
+ * @throws NullPointerException if <code>data</code> is <code>null</code>.
+ */
+ public double[] getPixels(int x, int y, int w, int h, double[] dArray,
+ DataBuffer data)
+ {
+ int size = w * h;
+ int outOffset = 0;
+ double[] pixel = null;
+ if (dArray == null)
+ dArray = new double[w * h * numBands];
+ for (int yy = y; yy < (y + h); yy++)
+ {
+ for (int xx = x; xx < (x + w); xx++)
+ {
+ pixel = getPixel(xx, yy, pixel, data);
+ System.arraycopy(pixel, 0, dArray, outOffset, numBands);
+ outOffset += numBands;
+ }
+ }
+ return dArray;
+ }
+
+ /**
+ * Returns the sample value 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 data the data buffer (<code>null</code> not permitted).
+ *
+ * @return The sample value.
+ *
+ * @throws NullPointerException if <code>data</code> is <code>null</code>.
+ */
+ public abstract int getSample(int x, int y, int b, DataBuffer data);
+
+ /**
+ * Returns the sample value 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 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 float getSampleFloat(int x, int y, int b, DataBuffer data)
+ {
+ return getSample(x, y, b, data);
+ }
+
+ /**
+ * Returns the sample value 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 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);
+}