478 lines
13 KiB
Java
478 lines
13 KiB
Java
/* Copyright (C) 2000, 2001, 2002 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;
|
|
|
|
/**
|
|
* @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. */
|
|
protected int numBands;
|
|
|
|
/**
|
|
* The DataBuffer type that is used to store the data of the image
|
|
* described.
|
|
*/
|
|
protected int dataType;
|
|
|
|
public SampleModel(int dataType, int w, int h, int numBands)
|
|
{
|
|
if ((w <= 0) || (h <= 0))
|
|
throw new IllegalArgumentException((w <= 0 ? " width<=0" : " width is ok")
|
|
+(h <= 0 ? " height<=0" : " height is ok"));
|
|
|
|
// FIXME: How can an int be greater than Integer.MAX_VALUE?
|
|
// FIXME: How do we identify an unsupported data type?
|
|
|
|
this.dataType = dataType;
|
|
this.width = w;
|
|
this.height = h;
|
|
this.numBands = numBands;
|
|
}
|
|
|
|
public final int getWidth()
|
|
{
|
|
return width;
|
|
}
|
|
|
|
public final int getHeight()
|
|
{
|
|
return height;
|
|
}
|
|
|
|
public final int getNumBands()
|
|
{
|
|
return numBands;
|
|
}
|
|
|
|
public abstract int getNumDataElements();
|
|
|
|
public final int getDataType()
|
|
{
|
|
return dataType;
|
|
}
|
|
|
|
public int getTransferType()
|
|
{
|
|
// FIXME: Is this a reasonable default implementation?
|
|
return dataType;
|
|
}
|
|
|
|
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 size = w*h;
|
|
int numDataElements = getNumDataElements();
|
|
int dataSize = numDataElements*size;
|
|
|
|
Object pixelData;
|
|
switch (getTransferType())
|
|
{
|
|
case DataBuffer.TYPE_BYTE:
|
|
pixelData = new byte[numDataElements];
|
|
break;
|
|
case DataBuffer.TYPE_USHORT:
|
|
pixelData = new short[numDataElements];
|
|
break;
|
|
case DataBuffer.TYPE_INT:
|
|
pixelData = new int[numDataElements];
|
|
break;
|
|
default:
|
|
// Seems like the only sensible thing to do.
|
|
throw new ClassCastException();
|
|
}
|
|
int inOffset = 0;
|
|
|
|
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;
|
|
}
|
|
}
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
/* FIXME: Should it return a banded or pixel interleaved array of
|
|
samples? (Assume interleaved.) */
|
|
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++)
|
|
{
|
|
getPixel(xx, yy, pixel, data);
|
|
System.arraycopy(pixel, 0, iArray, outOffset, numBands);
|
|
outOffset += numBands;
|
|
}
|
|
}
|
|
return iArray;
|
|
}
|
|
|
|
/* FIXME: Should it return a banded or pixel interleaved array of
|
|
samples? (Assume interleaved.) */
|
|
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++)
|
|
{
|
|
getPixel(xx, yy, pixel, data);
|
|
System.arraycopy(pixel, 0, fArray, outOffset, numBands);
|
|
outOffset += numBands;
|
|
}
|
|
}
|
|
return fArray;
|
|
}
|
|
|
|
/* FIXME: Should it return a banded or pixel interleaved array of
|
|
samples? (Assume interleaved.) */
|
|
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++)
|
|
{
|
|
getPixel(xx, yy, pixel, data);
|
|
System.arraycopy(pixel, 0, dArray, outOffset, numBands);
|
|
outOffset += numBands;
|
|
}
|
|
}
|
|
return dArray;
|
|
}
|
|
|
|
public abstract int getSample(int x, int y, int b, DataBuffer data);
|
|
|
|
public float getSampleFloat(int x, int y, int b, DataBuffer data)
|
|
{
|
|
return getSample(x, y, b, data);
|
|
}
|
|
|
|
public double getSampleDouble(int x, int y, int b, DataBuffer data)
|
|
{
|
|
return getSampleFloat(x, y, b, data);
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
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;
|
|
}
|
|
}
|
|
}
|
|
|
|
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;
|
|
}
|
|
}
|
|
}
|
|
|
|
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;
|
|
}
|
|
}
|
|
}
|
|
|
|
public abstract void setSample(int x, int y, int b, int s,
|
|
DataBuffer data);
|
|
|
|
public void setSample(int x, int y, int b, float s,
|
|
DataBuffer data)
|
|
{
|
|
setSample(x, y, b, (int) s, data);
|
|
}
|
|
|
|
public void setSample(int x, int y, int b, double s,
|
|
DataBuffer data)
|
|
{
|
|
setSample(x, y, b, (float) s, data);
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
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);
|
|
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
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);
|
|
|
|
public abstract DataBuffer createDataBuffer();
|
|
|
|
public abstract int[] getSampleSize();
|
|
|
|
public abstract int getSampleSize(int band);
|
|
}
|