JDK8/Java8源码在线阅读
/*
* Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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*/
/* ****************************************************************
******************************************************************
******************************************************************
*** COPYRIGHT (c) Eastman Kodak Company, 1997
*** As an unpublished work pursuant to Title 17 of the United
*** States Code. All rights reserved.
******************************************************************
******************************************************************
******************************************************************/
package java.awt.image;
/**
* This abstract class defines an interface for extracting samples of pixels
* in an image. All image data is expressed as a collection of pixels.
* Each pixel consists of a number of samples. A sample is a datum
* for one band of an image and a band consists of all samples of a
* particular type in an image. For example, a pixel might contain
* three samples representing its red, green and blue components.
* There are three bands in the image containing this pixel. One band
* consists of all the red samples from all pixels in the
* image. The second band consists of all the green samples and
* the remaining band consists of all of the blue samples. The pixel
* can be stored in various formats. For example, all samples from
* a particular band can be stored contiguously or all samples from a
* single pixel can be stored contiguously.
* <p>
* Subclasses of SampleModel specify the types of samples they can
* represent (e.g. unsigned 8-bit byte, signed 16-bit short, etc.)
* and may specify how the samples are organized in memory.
* In the Java 2D(tm) API, built-in image processing operators may
* not operate on all possible sample types, but generally will work
* for unsigned integral samples of 16 bits or less. Some operators
* support a wider variety of sample types.
* <p>
* A collection of pixels is represented as a Raster, which consists of
* a DataBuffer and a SampleModel. The SampleModel allows access to
* samples in the DataBuffer and may provide low-level information that
* a programmer can use to directly manipulate samples and pixels in the
* DataBuffer.
* <p>
* This class is generally a fall back method for dealing with
* images. More efficient code will cast the SampleModel to the
* appropriate subclass and extract the information needed to directly
* manipulate pixels in the DataBuffer.
*
* @see java.awt.image.DataBuffer
* @see java.awt.image.Raster
* @see java.awt.image.ComponentSampleModel
* @see java.awt.image.PixelInterleavedSampleModel
* @see java.awt.image.BandedSampleModel
* @see java.awt.image.MultiPixelPackedSampleModel
* @see java.awt.image.SinglePixelPackedSampleModel
*/
public abstract class SampleModel
{
/** Width in pixels of the region of image data that this SampleModel
* describes.
*/
protected int width;
/** Height in pixels of the region of image data that this SampleModel
* describes.
*/
protected int height;
/** Number of bands of the image data that this SampleModel describes. */
protected int numBands;
/** Data type of the DataBuffer storing the pixel data.
* @see java.awt.image.DataBuffer
*/
protected int dataType;
static private native void initIDs();
static {
ColorModel.loadLibraries();
initIDs();
}
/**
* Constructs a SampleModel with the specified parameters.
* @param dataType The data type of the DataBuffer storing the pixel data.
* @param w The width (in pixels) of the region of image data.
* @param h The height (in pixels) of the region of image data.
* @param numBands The number of bands of the image data.
* @throws IllegalArgumentException if <code>w</code> or <code>h</code>
* is not greater than 0
* @throws IllegalArgumentException if the product of <code>w</code>
* and <code>h</code> is greater than
* <code>Integer.MAX_VALUE</code>
* @throws IllegalArgumentException if <code>dataType</code> is not
* one of the supported data types
*/
public SampleModel(int dataType, int w, int h, int numBands)
{
long size = (long)w * h;
if (w <= 0 || h <= 0) {
throw new IllegalArgumentException("Width ("+w+") and height ("+
h+") must be > 0");
}
if (size >= Integer.MAX_VALUE) {
throw new IllegalArgumentException("Dimensions (width="+w+
" height="+h+") are too large");
}
if (dataType < DataBuffer.TYPE_BYTE ||
(dataType > DataBuffer.TYPE_DOUBLE &&
dataType != DataBuffer.TYPE_UNDEFINED))
{
throw new IllegalArgumentException("Unsupported dataType: "+
dataType);
}
if (numBands <= 0) {
throw new IllegalArgumentException("Number of bands must be > 0");
}
this.dataType = dataType;
this.width = w;
this.height = h;
this.numBands = numBands;
}
/** Returns the width in pixels.
* @return the width in pixels of the region of image data
* that this <code>SampleModel</code> describes.
*/
final public int getWidth() {
return width;
}
/** Returns the height in pixels.
* @return the height in pixels of the region of image data
* that this <code>SampleModel</code> describes.
*/
final public int getHeight() {
return height;
}
/** Returns the total number of bands of image data.
* @return the number of bands of image data that this
* <code>SampleModel</code> describes.
*/
final public int getNumBands() {
return numBands;
}
/** Returns the number of data elements needed to transfer a pixel
* via the getDataElements and setDataElements methods. When pixels
* are transferred via these methods, they may be transferred in a
* packed or unpacked format, depending on the implementation of the
* SampleModel. Using these methods, pixels are transferred as an
* array of getNumDataElements() elements of a primitive type given
* by getTransferType(). The TransferType may or may not be the same
* as the storage DataType.
* @return the number of data elements.
* @see #getDataElements(int, int, Object, DataBuffer)
* @see #getDataElements(int, int, int, int, Object, DataBuffer)
* @see #setDataElements(int, int, Object, DataBuffer)
* @see #setDataElements(int, int, int, int, Object, DataBuffer)
* @see #getTransferType
*/
public abstract int getNumDataElements();
/** Returns the data type of the DataBuffer storing the pixel data.
* @return the data type.
*/
final public int getDataType() {
return dataType;
}
/** Returns the TransferType used to transfer pixels via the
* getDataElements and setDataElements methods. When pixels
* are transferred via these methods, they may be transferred in a
* packed or unpacked format, depending on the implementation of the
* SampleModel. Using these methods, pixels are transferred as an
* array of getNumDataElements() elements of a primitive type given
* by getTransferType(). The TransferType may or may not be the same
* as the storage DataType. The TransferType will be one of the types
* defined in DataBuffer.
* @return the transfer type.
* @see #getDataElements(int, int, Object, DataBuffer)
* @see #getDataElements(int, int, int, int, Object, DataBuffer)
* @see #setDataElements(int, int, Object, DataBuffer)
* @see #setDataElements(int, int, int, int, Object, DataBuffer)
* @see #getNumDataElements
* @see java.awt.image.DataBuffer
*/
public int getTransferType() {
return dataType;
}
/**
* Returns the samples for a specified pixel in an int array,
* one sample per array element.
* ArrayIndexOutOfBoundsException may be thrown if the coordinates are
* not in bounds.
* @param x The X coordinate of the pixel location
* @param y The Y coordinate of the pixel location
* @param iArray If non-null, returns the samples in this array
* @param data The DataBuffer containing the image data
* @return the samples for the specified pixel.
* @see #setPixel(int, int, int[], DataBuffer)
*
* @throws NullPointerException if data is null.
* @throws ArrayIndexOutOfBoundsException if the coordinates are
* not in bounds, or if iArray is too small to hold the output.
*/
public int[] getPixel(int x, int y, int iArray[], DataBuffer data) {
int pixels[];
if (iArray != null)
pixels = iArray;
else
pixels = new int[numBands];
for (int i=0; i<numBands; i++) {
pixels[i] = getSample(x, y, i, data);
}
return pixels;
}
/**
* Returns data for a single pixel in a primitive array of type
* TransferType. For image data supported by the Java 2D API, this
* will be one of DataBuffer.TYPE_BYTE, DataBuffer.TYPE_USHORT,
* DataBuffer.TYPE_INT, DataBuffer.TYPE_SHORT, DataBuffer.TYPE_FLOAT,
* or DataBuffer.TYPE_DOUBLE. Data may be returned in a packed format,
* thus increasing efficiency for data transfers. Generally, obj
* should be passed in as null, so that the Object will be created
* automatically and will be of the right primitive data type.
* <p>
* The following code illustrates transferring data for one pixel from
* DataBuffer <code>db1</code>, whose storage layout is described by
* SampleModel <code>sm1</code>, to DataBuffer <code>db2</code>, whose
* storage layout is described by SampleModel <code>sm2</code>.
* The transfer will generally be more efficient than using
* getPixel/setPixel.
* <pre>
* SampleModel sm1, sm2;
* DataBuffer db1, db2;
* sm2.setDataElements(x, y, sm1.getDataElements(x, y, null, db1), db2);
* </pre>
* Using getDataElements/setDataElements to transfer between two
* DataBuffer/SampleModel pairs is legitimate if the SampleModels have
* the same number of bands, corresponding bands have the same number of
* bits per sample, and the TransferTypes are the same.
* <p>
* If obj is non-null, it should be a primitive array of type TransferType.
* Otherwise, a ClassCastException is thrown. An
* ArrayIndexOutOfBoundsException may be thrown if the coordinates are
* not in bounds, or if obj is non-null and is not large enough to hold
* the pixel data.
* @param x The X coordinate of the pixel location.
* @param y The Y coordinate of the pixel location.
* @param obj If non-null, a primitive array in which to return
* the pixel data.
* @param data The DataBuffer containing the image data.
* @return the data elements for the specified pixel.
* @see #getNumDataElements
* @see #getTransferType
* @see java.awt.image.DataBuffer
* @see #setDataElements(int, int, Object, DataBuffer)
*
* @throws NullPointerException if data is null.
* @throws ArrayIndexOutOfBoundsException if the coordinates are
* not in bounds, or if obj is too small to hold the output.
*/
public abstract Object getDataElements(int x, int y,
Object obj, DataBuffer data);
/**
* Returns the pixel data for the specified rectangle of pixels in a
* primitive array of type TransferType.
* For image data supported by the Java 2D API, this
* will be one of DataBuffer.TYPE_BYTE, DataBuffer.TYPE_USHORT,
* DataBuffer.TYPE_INT, DataBuffer.TYPE_SHORT, DataBuffer.TYPE_FLOAT,
* or DataBuffer.TYPE_DOUBLE. Data may be returned in a packed format,
* thus increasing efficiency for data transfers. Generally, obj
* should be passed in as null, so that the Object will be created
* automatically and will be of the right primitive data type.
* <p>
* The following code illustrates transferring data for a rectangular
* region of pixels from
* DataBuffer <code>db1</code>, whose storage layout is described by
* SampleModel <code>sm1</code>, to DataBuffer <code>db2</code>, whose
* storage layout is described by SampleModel <code>sm2</code>.
* The transfer will generally be more efficient than using
* getPixels/setPixels.
* <pre>
* SampleModel sm1, sm2;
* DataBuffer db1, db2;
* sm2.setDataElements(x, y, w, h, sm1.getDataElements(x, y, w,
* h, null, db1), db2);
* </pre>
* Using getDataElements/setDataElements to transfer between two
* DataBuffer/SampleModel pairs is legitimate if the SampleModels have
* the same number of bands, corresponding bands have the same number of
* bits per sample, and the TransferTypes are the same.
* <p>
* If obj is non-null, it should be a primitive array of type TransferType.
* Otherwise, a ClassCastException is thrown. An
* ArrayIndexOutOfBoundsException may be thrown if the coordinates are
* not in bounds, or if obj is non-null and is not large enough to hold
* the pixel data.
* @param x The minimum X coordinate of the pixel rectangle.
* @param y The minimum Y coordinate of the pixel rectangle.
* @param w The width of the pixel rectangle.
* @param h The height of the pixel rectangle.
* @param obj If non-null, a primitive array in which to return
* the pixel data.
* @param data The DataBuffer containing the image data.
* @return the data elements for the specified region of pixels.
* @see #getNumDataElements
* @see #getTransferType
* @see #setDataElements(int, int, int, int, Object, DataBuffer)
* @see java.awt.image.DataBuffer
*
* @throws NullPointerException if data is null.
* @throws ArrayIndexOutOfBoundsException if the coordinates are
* not in bounds, or if obj is too small to hold the output.
*/
public Object getDataElements(int x, int y, int w, int h,
Object obj, DataBuffer data) {
int type = getTransferType();
int numDataElems = getNumDataElements();
int cnt = 0;
Object o = null;
int x1 = x + w;
int y1 = y + h;
if (x < 0 || x >= width || w > width || x1 < 0 || x1 > width ||
y < 0 || y >= height || h > height || y1 < 0 || y1 > height)
{
throw new ArrayIndexOutOfBoundsException("Invalid coordinates.");
}
switch(type) {
case DataBuffer.TYPE_BYTE:
byte[] btemp;
byte[] bdata;
if (obj == null)
bdata = new byte[numDataElems*w*h];
else
bdata = (byte[])obj;
for (int i=y; i<y1; i++) {
for (int j=x; j<x1; j++) {
o = getDataElements(j, i, o, data);
btemp = (byte[])o;
for (int k=0; k<numDataElems; k++) {
bdata[cnt++] = btemp[k];
}
}
}
obj = (Object)bdata;
break;
case DataBuffer.TYPE_USHORT:
case DataBuffer.TYPE_SHORT:
short[] sdata;
short[] stemp;
if (obj == null)
sdata = new short[numDataElems*w*h];
else
sdata = (short[])obj;
for (int i=y; i<y1; i++) {
for (int j=x; j<x1; j++) {
o = getDataElements(j, i, o, data);
stemp = (short[])o;
for (int k=0; k<numDataElems; k++) {
sdata[cnt++] = stemp[k];
}
}
}
obj = (Object)sdata;
break;
case DataBuffer.TYPE_INT:
int[] idata;
int[] itemp;
if (obj == null)
idata = new int[numDataElems*w*h];
else
idata = (int[])obj;
for (int i=y; i<y1; i++) {
for (int j=x; j<x1; j++) {
o = getDataElements(j, i, o, data);
itemp = (int[])o;
for (int k=0; k<numDataElems; k++) {
idata[cnt++] = itemp[k];
}
}
}
obj = (Object)idata;
break;
case DataBuffer.TYPE_FLOAT:
float[] fdata;
float[] ftemp;
if (obj == null)
fdata = new float[numDataElems*w*h];
else
fdata = (float[])obj;
for (int i=y; i<y1; i++) {
for (int j=x; j<x1; j++) {
o = getDataElements(j, i, o, data);
ftemp = (float[])o;
for (int k=0; k<numDataElems; k++) {
fdata[cnt++] = ftemp[k];
}
}
}
obj = (Object)fdata;
break;
case DataBuffer.TYPE_DOUBLE:
double[] ddata;
double[] dtemp;
if (obj == null)
ddata = new double[numDataElems*w*h];
else
ddata = (double[])obj;
for (int i=y; i<y1; i++) {
for (int j=x; j<x1; j++) {
o = getDataElements(j, i, o, data);
dtemp = (double[])o;
for (int k=0; k<numDataElems; k++) {
ddata[cnt++] = dtemp[k];
}
}
}
obj = (Object)ddata;
break;
}
return obj;
}
/**
* Sets the data for a single pixel in the specified DataBuffer from a
* primitive array of type TransferType. For image data supported by
* the Java 2D API, this will be one of DataBuffer.TYPE_BYTE,
* DataBuffer.TYPE_USHORT, DataBuffer.TYPE_INT, DataBuffer.TYPE_SHORT,
* DataBuffer.TYPE_FLOAT, or DataBuffer.TYPE_DOUBLE. Data in the array
* may be in a packed format, thus increasing efficiency for data
* transfers.
* <p>
* The following code illustrates transferring data for one pixel from
* DataBuffer <code>db1</code>, whose storage layout is described by
* SampleModel <code>sm1</code>, to DataBuffer <code>db2</code>, whose
* storage layout is described by SampleModel <code>sm2</code>.
* The transfer will generally be more efficient than using
* getPixel/setPixel.
* <pre>
* SampleModel sm1, sm2;
* DataBuffer db1, db2;
* sm2.setDataElements(x, y, sm1.getDataElements(x, y, null, db1),
* db2);
* </pre>
* Using getDataElements/setDataElements to transfer between two
* DataBuffer/SampleModel pairs is legitimate if the SampleModels have
* the same number of bands, corresponding bands have the same number of
* bits per sample, and the TransferTypes are the same.
* <p>
* obj must be a primitive array of type TransferType. Otherwise,
* a ClassCastException is thrown. An
* ArrayIndexOutOfBoundsException may be thrown if the coordinates are
* not in bounds, or if obj is not large enough to hold the pixel data.
* @param x The X coordinate of the pixel location.
* @param y The Y coordinate of the pixel location.
* @param obj A primitive array containing pixel data.
* @param data The DataBuffer containing the image data.
* @see #getNumDataElements
* @see #getTransferType
* @see #getDataElements(int, int, Object, DataBuffer)
* @see java.awt.image.DataBuffer
*
* @throws NullPointerException if data is null.
* @throws ArrayIndexOutOfBoundsException if the coordinates are
* not in bounds, or if obj is too small to hold the input.
*/
public abstract void setDataElements(int x, int y,
Object obj, DataBuffer data);
/**
* Sets the data for a rectangle of pixels in the specified DataBuffer
* from a primitive array of type TransferType. For image data supported
* by the Java 2D API, this will be one of DataBuffer.TYPE_BYTE,
* DataBuffer.TYPE_USHORT, DataBuffer.TYPE_INT, DataBuffer.TYPE_SHORT,
* DataBuffer.TYPE_FLOAT, or DataBuffer.TYPE_DOUBLE. Data in the array
* may be in a packed format, thus increasing efficiency for data
* transfers.
* <p>
* The following code illustrates transferring data for a rectangular
* region of pixels from
* DataBuffer <code>db1</code>, whose storage layout is described by
* SampleModel <code>sm1</code>, to DataBuffer <code>db2</code>, whose
* storage layout is described by SampleModel <code>sm2</code>.
* The transfer will generally be more efficient than using
* getPixels/setPixels.
* <pre>
* SampleModel sm1, sm2;
* DataBuffer db1, db2;
* sm2.setDataElements(x, y, w, h, sm1.getDataElements(x, y, w, h,
* null, db1), db2);
* </pre>
* Using getDataElements/setDataElements to transfer between two
* DataBuffer/SampleModel pairs is legitimate if the SampleModels have
* the same number of bands, corresponding bands have the same number of
* bits per sample, and the TransferTypes are the same.
* <p>
* obj must be a primitive array of type TransferType. Otherwise,
* a ClassCastException is thrown. An
* ArrayIndexOutOfBoundsException may be thrown if the coordinates are
* not in bounds, or if obj is not large enough to hold the pixel data.
* @param x The minimum X coordinate of the pixel rectangle.
* @param y The minimum Y coordinate of the pixel rectangle.
* @param w The width of the pixel rectangle.
* @param h The height of the pixel rectangle.
* @param obj A primitive array containing pixel data.
* @param data The DataBuffer containing the image data.
* @see #getNumDataElements
* @see #getTransferType
* @see #getDataElements(int, int, int, int, Object, DataBuffer)
* @see java.awt.image.DataBuffer
*
* @throws NullPointerException if data is null.
* @throws ArrayIndexOutOfBoundsException if the coordinates are
* not in bounds, or if obj is too small to hold the input.
*/
public void setDataElements(int x, int y, int w, int h,
Object obj, DataBuffer data) {
int cnt = 0;
Object o = null;
int type = getTransferType();
int numDataElems = getNumDataElements();
int x1 = x + w;
int y1 = y + h;
if (x < 0 || x >= width || w > width || x1 < 0 || x1 > width ||
y < 0 || y >= height || h > height || y1 < 0 || y1 > height)
{
throw new ArrayIndexOutOfBoundsException("Invalid coordinates.");
}
switch(type) {
case DataBuffer.TYPE_BYTE:
byte[] barray = (byte[])obj;
byte[] btemp = new byte[numDataElems];
for (int i=y; i<y1; i++) {
for (int j=x; j<x1; j++) {
for (int k=0; k<numDataElems; k++) {
btemp[k] = barray[cnt++];
}
setDataElements(j, i, btemp, data);
}
}
break;
case DataBuffer.TYPE_USHORT:
case DataBuffer.TYPE_SHORT:
short[] sarray = (short[])obj;
short[] stemp = new short[numDataElems];
for (int i=y; i<y1; i++) {
for (int j=x; j<x1; j++) {
for (int k=0; k<numDataElems; k++) {
stemp[k] = sarray[cnt++];
}
setDataElements(j, i, stemp, data);
}
}
break;
case DataBuffer.TYPE_INT:
int[] iArray = (int[])obj;
int[] itemp = new int[numDataElems];
for (int i=y; i<y1; i++) {
for (int j=x; j<x1; j++) {
for (int k=0; k<numDataElems; k++) {
itemp[k] = iArray[cnt++];
}
setDataElements(j, i, itemp, data);
}
}
break;
case DataBuffer.TYPE_FLOAT:
float[] fArray = (float[])obj;
float[] ftemp = new float[numDataElems];
for (int i=y; i<y1; i++) {
for (int j=x; j<x1; j++) {
for (int k=0; k<numDataElems; k++) {
ftemp[k] = fArray[cnt++];
}
setDataElements(j, i, ftemp, data);
}
}
break;
case DataBuffer.TYPE_DOUBLE:
double[] dArray = (double[])obj;
double[] dtemp = new double[numDataElems];
for (int i=y; i<y1; i++) {
for (int j=x; j<x1; j++) {
for (int k=0; k<numDataElems; k++) {
dtemp[k] = dArray[cnt++];
}
setDataElements(j, i, dtemp, data);
}
}
break;
}
}
/**
* Returns the samples for the specified pixel in an array of float.
* ArrayIndexOutOfBoundsException may be thrown if the coordinates are
* not in bounds.
* @param x The X coordinate of the pixel location.
* @param y The Y coordinate of the pixel location.
* @param fArray If non-null, returns the samples in this array.
* @param data The DataBuffer containing the image data.
* @return the samples for the specified pixel.
* @see #setPixel(int, int, float[], DataBuffer)
*
* @throws NullPointerException if data is null.
* @throws ArrayIndexOutOfBoundsException if the coordinates are
* not in bounds, or if fArray is too small to hold the output.
*/
public float[] getPixel(int x, int y, float fArray[],
DataBuffer data) {
float pixels[];
if (fArray != null)
pixels = fArray;
else
pixels = new float[numBands];
for (int i=0; i<numBands; i++)
pixels[i] = getSampleFloat(x, y, i, data);
return pixels;
}
/**
* Returns the samples for the specified pixel in an array of double.
* ArrayIndexOutOfBoundsException may be thrown if the coordinates are
* not in bounds.
* @param x The X coordinate of the pixel location.
* @param y The Y coordinate of the pixel location.
* @param dArray If non-null, returns the samples in this array.
* @param data The DataBuffer containing the image data.
* @return the samples for the specified pixel.
* @see #setPixel(int, int, double[], DataBuffer)
*
* @throws NullPointerException if data is null.
* @throws ArrayIndexOutOfBoundsException if the coordinates are
* not in bounds, or if dArray is too small to hold the output.
*/
public double[] getPixel(int x, int y, double dArray[],
DataBuffer data) {
double pixels[];
if(dArray != null)
pixels = dArray;
else
pixels = new double[numBands];
for (int i=0; i<numBands; i++)
pixels[i] = getSampleDouble(x, y, i, data);
return pixels;
}
/**
* Returns all samples for a rectangle of pixels in an
* int array, one sample per array element.
* ArrayIndexOutOfBoundsException may be thrown if the coordinates are
* not in bounds.
* @param x The X coordinate of the upper left pixel location.
* @param y The Y coordinate of the upper left pixel location.
* @param w The width of the pixel rectangle.
* @param h The height of the pixel rectangle.
* @param iArray If non-null, returns the samples in this array.
* @param data The DataBuffer containing the image data.
* @return the samples for the specified region of pixels.
* @see #setPixels(int, int, int, int, int[], DataBuffer)
*
* @throws NullPointerException if data is null.
* @throws ArrayIndexOutOfBoundsException if the coordinates are
* not in bounds, or if iArray is too small to hold the output.
*/
public int[] getPixels(int x, int y, int w, int h,
int iArray[], DataBuffer data) {
int pixels[];
int Offset=0;
int x1 = x + w;
int y1 = y + h;
if (x < 0 || x >= width || w > width || x1 < 0 || x1 > width ||
y < 0 || y >= height || h > height || y1 < 0 || y1 > height)
{
throw new ArrayIndexOutOfBoundsException("Invalid coordinates.");
}
if (iArray != null)
pixels = iArray;
else
pixels = new int[numBands * w * h];
for (int i=y; i<y1; i++) {
for (int j=x; j<x1; j++) {
for(int k=0; k<numBands; k++) {
pixels[Offset++] = getSample(j, i, k, data);
}
}
}
return pixels;
}
/**
* Returns all samples for a rectangle of pixels in a float
* array, one sample per array element.
* ArrayIndexOutOfBoundsException may be thrown if the coordinates are
* not in bounds.
* @param x The X coordinate of the upper left pixel location.
* @param y The Y coordinate of the upper left pixel location.
* @param w The width of the pixel rectangle.
* @param h The height of the pixel rectangle.
* @param fArray If non-null, returns the samples in this array.
* @param data The DataBuffer containing the image data.
* @return the samples for the specified region of pixels.
* @see #setPixels(int, int, int, int, float[], DataBuffer)
*
* @throws NullPointerException if data is null.
* @throws ArrayIndexOutOfBoundsException if the coordinates are
* not in bounds, or if fArray is too small to hold the output.
*/
public float[] getPixels(int x, int y, int w, int h,
float fArray[], DataBuffer data) {
float pixels[];
int Offset = 0;
int x1 = x + w;
int y1 = y + h;
if (x < 0 || x >= width || w > width || x1 < 0 || x1 > width ||
y < 0 || y >= height || h > height || y1 < 0 || y1 > height)
{
throw new ArrayIndexOutOfBoundsException("Invalid coordinates.");
}
if (fArray != null)
pixels = fArray;
else
pixels = new float[numBands * w * h];
for (int i=y; i<y1; i++) {
for(int j=x; j<x1; j++) {
for(int k=0; k<numBands; k++) {
pixels[Offset++] = getSampleFloat(j, i, k, data);
}
}
}
return pixels;
}
/**
* Returns all samples for a rectangle of pixels in a double
* array, one sample per array element.
* ArrayIndexOutOfBoundsException may be thrown if the coordinates are
* not in bounds.
* @param x The X coordinate of the upper left pixel location.
* @param y The Y coordinate of the upper left pixel location.
* @param w The width of the pixel rectangle.
* @param h The height of the pixel rectangle.
* @param dArray If non-null, returns the samples in this array.
* @param data The DataBuffer containing the image data.
* @return the samples for the specified region of pixels.
* @see #setPixels(int, int, int, int, double[], DataBuffer)
*
* @throws NullPointerException if data is null.
* @throws ArrayIndexOutOfBoundsException if the coordinates are
* not in bounds, or if dArray is too small to hold the output.
*/
public double[] getPixels(int x, int y, int w, int h,
double dArray[], DataBuffer data) {
double pixels[];
int Offset = 0;
int x1 = x + w;
int y1 = y + h;
if (x < 0 || x >= width || w > width || x1 < 0 || x1 > width ||
y < 0 || y >= height || h > height || y1 < 0 || y1 > height)
{
throw new ArrayIndexOutOfBoundsException("Invalid coordinates.");
}
if (dArray != null)
pixels = dArray;
else
pixels = new double[numBands * w * h];
// Fix 4217412
for (int i=y; i<y1; i++) {
for (int j=x; j<x1; j++) {
for (int k=0; k<numBands; k++) {
pixels[Offset++] = getSampleDouble(j, i, k, data);
}
}
}
return pixels;
}
/**
* Returns the sample in a specified band for the pixel located
* at (x,y) as an int.
* ArrayIndexOutOfBoundsException may be thrown if the coordinates are
* not in bounds.
* @param x The X coordinate of the pixel location.
* @param y The Y coordinate of the pixel location.
* @param b The band to return.
* @param data The DataBuffer containing the image data.
* @return the sample in a specified band for the specified pixel.
* @see #setSample(int, int, int, int, DataBuffer)
*
* @throws NullPointerException if data is null.
* @throws ArrayIndexOutOfBoundsException if the coordinates or
* the band index are not in bounds.
*/
public abstract int getSample(int x, int y, int b, DataBuffer data);
/**
* Returns the sample in a specified band
* for the pixel located at (x,y) as a float.
* ArrayIndexOutOfBoundsException may be thrown if the coordinates are
* not in bounds.
* @param x The X coordinate of the pixel location.
* @param y The Y coordinate of the pixel location.
* @param b The band to return.
* @param data The DataBuffer containing the image data.
* @return the sample in a specified band for the specified pixel.
*
* @throws NullPointerException if data is null.
* @throws ArrayIndexOutOfBoundsException if the coordinates or
* the band index are not in bounds.
*/
public float getSampleFloat(int x, int y, int b, DataBuffer data) {
float sample;
sample = (float) getSample(x, y, b, data);
return sample;
}
/**
* Returns the sample in a specified band
* for a pixel located at (x,y) as a double.
* ArrayIndexOutOfBoundsException may be thrown if the coordinates are
* not in bounds.
* @param x The X coordinate of the pixel location.
* @param y The Y coordinate of the pixel location.
* @param b The band to return.
* @param data The DataBuffer containing the image data.
* @return the sample in a specified band for the specified pixel.
*
* @throws NullPointerException if data is null.
* @throws ArrayIndexOutOfBoundsException if the coordinates or
* the band index are not in bounds.
*/
public double getSampleDouble(int x, int y, int b, DataBuffer data) {
double sample;
sample = (double) getSample(x, y, b, data);
return sample;
}
/**
* Returns the samples for a specified band for the specified rectangle
* of pixels in an int array, one sample per array element.
* ArrayIndexOutOfBoundsException may be thrown if the coordinates are
* not in bounds.
* @param x The X coordinate of the upper left pixel location.
* @param y The Y coordinate of the upper left pixel location.
* @param w The width of the pixel rectangle.
* @param h The height of the pixel rectangle.
* @param b The band to return.
* @param iArray If non-null, returns the samples in this array.
* @param data The DataBuffer containing the image data.
* @return the samples for the specified band for the specified region
* of pixels.
* @see #setSamples(int, int, int, int, int, int[], DataBuffer)
*
* @throws NullPointerException if data is null.
* @throws ArrayIndexOutOfBoundsException if the coordinates or
* the band index are not in bounds, or if iArray is too small to
* hold the output.
*/
public int[] getSamples(int x, int y, int w, int h, int b,
int iArray[], DataBuffer data) {
int pixels[];
int Offset=0;
int x1 = x + w;
int y1 = y + h;
if (x < 0 || x1 < x || x1 > width ||
y < 0 || y1 < y || y1 > height)
{
throw new ArrayIndexOutOfBoundsException("Invalid coordinates.");
}
if (iArray != null)
pixels = iArray;
else
pixels = new int[w * h];
for(int i=y; i<y1; i++) {
for (int j=x; j<x1; j++) {
pixels[Offset++] = getSample(j, i, b, data);
}
}
return pixels;
}
/**
* Returns the samples for a specified band for the specified rectangle
* of pixels in a float array, one sample per array element.
* ArrayIndexOutOfBoundsException may be thrown if the coordinates are
* not in bounds.
* @param x The X coordinate of the upper left pixel location.
* @param y The Y coordinate of the upper left pixel location.
* @param w The width of the pixel rectangle.
* @param h The height of the pixel rectangle.
* @param b The band to return.
* @param fArray If non-null, returns the samples in this array.
* @param data The DataBuffer containing the image data.
* @return the samples for the specified band for the specified region
* of pixels.
* @see #setSamples(int, int, int, int, int, float[], DataBuffer)
*
* @throws NullPointerException if data is null.
* @throws ArrayIndexOutOfBoundsException if the coordinates or
* the band index are not in bounds, or if fArray is too small to
* hold the output.
*/
public float[] getSamples(int x, int y, int w, int h,
int b, float fArray[],
DataBuffer data) {
float pixels[];
int Offset=0;
int x1 = x + w;
int y1 = y + h;
if (x < 0 || x1 < x || x1 > width ||
y < 0 || y1 < y || y1 > height)
{
throw new ArrayIndexOutOfBoundsException("Invalid coordinates");
}
if (fArray != null)
pixels = fArray;
else
pixels = new float[w * h];
for (int i=y; i<y1; i++) {
for (int j=x; j<x1; j++) {
pixels[Offset++] = getSampleFloat(j, i, b, data);
}
}
return pixels;
}
/**
* Returns the samples for a specified band for a specified rectangle
* of pixels in a double array, one sample per array element.
* ArrayIndexOutOfBoundsException may be thrown if the coordinates are
* not in bounds.
* @param x The X coordinate of the upper left pixel location.
* @param y The Y coordinate of the upper left pixel location.
* @param w The width of the pixel rectangle.
* @param h The height of the pixel rectangle.
* @param b The band to return.
* @param dArray If non-null, returns the samples in this array.
* @param data The DataBuffer containing the image data.
* @return the samples for the specified band for the specified region
* of pixels.
* @see #setSamples(int, int, int, int, int, double[], DataBuffer)
*
* @throws NullPointerException if data is null.
* @throws ArrayIndexOutOfBoundsException if the coordinates or
* the band index are not in bounds, or if dArray is too small to
* hold the output.
*/
public double[] getSamples(int x, int y, int w, int h,
int b, double dArray[],
DataBuffer data) {
double pixels[];
int Offset=0;
int x1 = x + w;
int y1 = y + h;
if (x < 0 || x1 < x || x1 > width ||
y < 0 || y1 < y || y1 > height)
{
throw new ArrayIndexOutOfBoundsException("Invalid coordinates");
}
if (dArray != null)
pixels = dArray;
else
pixels = new double[w * h];
for (int i=y; i<y1; i++) {
for (int j=x; j<x1; j++) {
pixels[Offset++] = getSampleDouble(j, i, b, data);
}
}
return pixels;
}
/**
* Sets a pixel in the DataBuffer using an int array of samples for input.
* ArrayIndexOutOfBoundsException may be thrown if the coordinates are
* not in bounds.
* @param x The X coordinate of the pixel location.
* @param y The Y coordinate of the pixel location.
* @param iArray The input samples in an int array.
* @param data The DataBuffer containing the image data.
* @see #getPixel(int, int, int[], DataBuffer)
*
* @throws NullPointerException if iArray or data is null.
* @throws ArrayIndexOutOfBoundsException if the coordinates are
* not in bounds, or if iArray is too small to hold the input.
*/
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);
}
/**
* Sets a pixel in the DataBuffer using a float array of samples for input.
* ArrayIndexOutOfBoundsException may be thrown if the coordinates are
* not in bounds.
* @param x The X coordinate of the pixel location.
* @param y The Y coordinate of the pixel location.
* @param fArray The input samples in a float array.
* @param data The DataBuffer containing the image data.
* @see #getPixel(int, int, float[], DataBuffer)
*
* @throws NullPointerException if fArray or data is null.
* @throws ArrayIndexOutOfBoundsException if the coordinates are
* not in bounds, or if fArray is too small to hold the input.
*/
public void setPixel(int x, int y, float fArray[], DataBuffer data) {
for (int i=0; i<numBands; i++)
setSample(x, y, i, fArray[i], data);
}
/**
* Sets a pixel in the DataBuffer using a double array of samples
* for input.
* @param x The X coordinate of the pixel location.
* @param y The Y coordinate of the pixel location.
* @param dArray The input samples in a double array.
* @param data The DataBuffer containing the image data.
* @see #getPixel(int, int, double[], DataBuffer)
*
* @throws NullPointerException if dArray or data is null.
* @throws ArrayIndexOutOfBoundsException if the coordinates are
* not in bounds, or if fArray is too small to hold the input.
*/
public void setPixel(int x, int y, double dArray[], DataBuffer data) {
for (int i=0; i<numBands; i++)
setSample(x, y, i, dArray[i], data);
}
/**
* Sets all samples for a rectangle of pixels from an int array containing
* one sample per array element.
* ArrayIndexOutOfBoundsException may be thrown if the coordinates are
* not in bounds.
* @param x The X coordinate of the upper left pixel location.
* @param y The Y coordinate of the upper left pixel location.
* @param w The width of the pixel rectangle.
* @param h The height of the pixel rectangle.
* @param iArray The input samples in an int array.
* @param data The DataBuffer containing the image data.
* @see #getPixels(int, int, int, int, int[], DataBuffer)
*
* @throws NullPointerException if iArray or data is null.
* @throws ArrayIndexOutOfBoundsException if the coordinates are
* not in bounds, or if iArray is too small to hold the input.
*/
public void setPixels(int x, int y, int w, int h,
int iArray[], DataBuffer data) {
int Offset=0;
int x1 = x + w;
int y1 = y + h;
if (x < 0 || x >= width || w > width || x1 < 0 || x1 > width ||
y < 0 || y >= height || h > height || y1 < 0 || y1 > height)
{
throw new ArrayIndexOutOfBoundsException("Invalid coordinates.");
}
for (int i=y; i<y1; i++) {
for (int j=x; j<x1; j++) {
for (int k=0; k<numBands; k++) {
setSample(j, i, k, iArray[Offset++], data);
}
}
}
}
/**
* Sets all samples for a rectangle of pixels from a float array containing
* one sample per array element.
* ArrayIndexOutOfBoundsException may be thrown if the coordinates are
* not in bounds.
* @param x The X coordinate of the upper left pixel location.
* @param y The Y coordinate of the upper left pixel location.
* @param w The width of the pixel rectangle.
* @param h The height of the pixel rectangle.
* @param fArray The input samples in a float array.
* @param data The DataBuffer containing the image data.
* @see #getPixels(int, int, int, int, float[], DataBuffer)
*
* @throws NullPointerException if fArray or data is null.
* @throws ArrayIndexOutOfBoundsException if the coordinates are
* not in bounds, or if fArray is too small to hold the input.
*/
public void setPixels(int x, int y, int w, int h,
float fArray[], DataBuffer data) {
int Offset=0;
int x1 = x + w;
int y1 = y + h;
if (x < 0 || x >= width || w > width || x1 < 0 || x1 > width||
y < 0 || y >= height || h > height || y1 < 0 || y1 > height)
{
throw new ArrayIndexOutOfBoundsException("Invalid coordinates.");
}
for (int i=y; i<y1; i++) {
for (int j=x; j<x1; j++) {
for(int k=0; k<numBands; k++) {
setSample(j, i, k, fArray[Offset++], data);
}
}
}
}
/**
* Sets all samples for a rectangle of pixels from a double array
* containing one sample per array element.
* ArrayIndexOutOfBoundsException may be thrown if the coordinates are
* not in bounds.
* @param x The X coordinate of the upper left pixel location.
* @param y The Y coordinate of the upper left pixel location.
* @param w The width of the pixel rectangle.
* @param h The height of the pixel rectangle.
* @param dArray The input samples in a double array.
* @param data The DataBuffer containing the image data.
* @see #getPixels(int, int, int, int, double[], DataBuffer)
*
* @throws NullPointerException if dArray or data is null.
* @throws ArrayIndexOutOfBoundsException if the coordinates are
* not in bounds, or if dArray is too small to hold the input.
*/
public void setPixels(int x, int y, int w, int h,
double dArray[], DataBuffer data) {
int Offset=0;
int x1 = x + w;
int y1 = y + h;
if (x < 0 || x >= width || w > width || x1 < 0 || x1 > width ||
y < 0 || y >= height || h > height || y1 < 0 || y1 > height)
{
throw new ArrayIndexOutOfBoundsException("Invalid coordinates.");
}
for (int i=y; i<y1; i++) {
for (int j=x; j<x1; j++) {
for (int k=0; k<numBands; k++) {
setSample(j, i, k, dArray[Offset++], data);
}
}
}
}
/**
* Sets a sample in the specified band for the pixel located at (x,y)
* in the DataBuffer using an int for input.
* ArrayIndexOutOfBoundsException may be thrown if the coordinates are
* not in bounds.
* @param x The X coordinate of the pixel location.
* @param y The Y coordinate of the pixel location.
* @param b The band to set.
* @param s The input sample as an int.
* @param data The DataBuffer containing the image data.
* @see #getSample(int, int, int, DataBuffer)
*
* @throws NullPointerException if data is null.
* @throws ArrayIndexOutOfBoundsException if the coordinates or
* the band index are not in bounds.
*/
public abstract void setSample(int x, int y, int b,
int s,
DataBuffer data);
/**
* Sets a sample in the specified band for the pixel located at (x,y)
* in the DataBuffer using a float for input.
* The default implementation of this method casts the input
* float sample to an int and then calls the
* <code>setSample(int, int, int, DataBuffer)</code> method using
* that int value.
* ArrayIndexOutOfBoundsException may be thrown if the coordinates are
* not in bounds.
* @param x The X coordinate of the pixel location.
* @param y The Y coordinate of the pixel location.
* @param b The band to set.
* @param s The input sample as a float.
* @param data The DataBuffer containing the image data.
* @see #getSample(int, int, int, DataBuffer)
*
* @throws NullPointerException if data is null.
* @throws ArrayIndexOutOfBoundsException if the coordinates or
* the band index are not in bounds.
*/
public void setSample(int x, int y, int b,
float s ,
DataBuffer data) {
int sample = (int)s;
setSample(x, y, b, sample, data);
}
/**
* Sets a sample in the specified band for the pixel located at (x,y)
* in the DataBuffer using a double for input.
* The default implementation of this method casts the input
* double sample to an int and then calls the
* <code>setSample(int, int, int, DataBuffer)</code> method using
* that int value.
* ArrayIndexOutOfBoundsException may be thrown if the coordinates are
* not in bounds.
* @param x The X coordinate of the pixel location.
* @param y The Y coordinate of the pixel location.
* @param b The band to set.
* @param s The input sample as a double.
* @param data The DataBuffer containing the image data.
* @see #getSample(int, int, int, DataBuffer)
*
* @throws NullPointerException if data is null.
* @throws ArrayIndexOutOfBoundsException if the coordinates or
* the band index are not in bounds.
*/
public void setSample(int x, int y, int b,
double s,
DataBuffer data) {
int sample = (int)s;
setSample(x, y, b, sample, data);
}
/**
* Sets the samples in the specified band for the specified rectangle
* of pixels from an int array containing one sample per array element.
* ArrayIndexOutOfBoundsException may be thrown if the coordinates are
* not in bounds.
* @param x The X coordinate of the upper left pixel location.
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