JDK8/Java8源码在线阅读
/*
* Copyright (c) 1998, 2012, 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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*/
package sun.awt.image;
import java.awt.image.Raster;
import java.awt.image.WritableRaster;
import java.awt.image.RasterFormatException;
import java.awt.image.SampleModel;
import java.awt.image.ComponentSampleModel;
import java.awt.image.PixelInterleavedSampleModel;
import java.awt.image.SinglePixelPackedSampleModel;
import java.awt.image.DataBuffer;
import java.awt.image.DataBufferByte;
import java.awt.Rectangle;
import java.awt.Point;
/**
* This class defines a Raster with pixels consisting of one or more
* 8-bit data elements stored in close proximity to each other in a
* single byte array.
* <p>
* The bit precision per data element is that of the data type (that
* is, the bit precision for this Raster is 8). There is only one
* pixel stride and one scanline stride for all bands. This type of
* Raster can be used with a ComponentColorModel if there are multiple
* bands, or an IndexColorModel if there is only one band.
*
*/
public class ByteInterleavedRaster extends ByteComponentRaster {
/** True if the data offsets range from 0 to (pixelStride - 1) in order. */
boolean inOrder;
/**
* The DataBuffer offset, minus sampleModelTranslateX*pixelStride,
* minus sampleModelTranslateY*scanlineStride, used to calculate
* pixel offsets.
*/
int dbOffset;
int dbOffsetPacked;
/** True if a SinglePixelPackedSampleModel is being used. */
boolean packed = false;
/** If packed == true, the SampleModel's bit masks. */
int[] bitMasks;
/** If packed == true, the SampleModel's bit offsets. */
int[] bitOffsets;
/** A cached copy of minX + width for use in bounds checks. */
private int maxX;
/** A cached copy of minY + height for use in bounds checks. */
private int maxY;
/**
* Constructs a ByteInterleavedRaster with the given SampleModel.
* The Raster's upper left corner is origin and it is the same
* size as the SampleModel. A DataBuffer large enough to describe the
* Raster is automatically created. SampleModel must be of type
* SinglePixelPackedSampleModel or InterleavedSampleModel.
* @param sampleModel The SampleModel that specifies the layout.
* @param origin The Point that specified the origin.
*/
public ByteInterleavedRaster(SampleModel sampleModel, Point origin) {
this(sampleModel,
sampleModel.createDataBuffer(),
new Rectangle(origin.x,
origin.y,
sampleModel.getWidth(),
sampleModel.getHeight()),
origin,
null);
}
/**
* Constructs a ByteInterleavedRaster with the given SampleModel
* and DataBuffer. The Raster's upper left corner is origin and
* it is the same size as the SampleModel. The DataBuffer is not
* initialized and must be a DataBufferByte compatible with SampleModel.
* SampleModel must be of type SinglePixelPackedSampleModel
* or InterleavedSampleModel.
* @param sampleModel The SampleModel that specifies the layout.
* @param dataBuffer The DataBufferShort that contains the image data.
* @param origin The Point that specifies the origin.
*/
public ByteInterleavedRaster(SampleModel sampleModel,
DataBuffer dataBuffer,
Point origin) {
this(sampleModel,
dataBuffer,
new Rectangle(origin.x,
origin.y,
sampleModel.getWidth(),
sampleModel.getHeight()),
origin,
null);
}
/*** Analyzes a ComponentSampleModel to determine if it can function
* as a PixelInterleavedSampleModel. In order to do so, it must use
* only bank 0 of its DataBuffer, and the data offsets must span a range
* of less than pixelStride.
*
* <p> These properties are trivially true for a 1-banded SampleModel.
*/
private boolean isInterleaved(ComponentSampleModel sm) {
// Analyze ComponentSampleModel to determine if it has the
// properties of a PixelInterleavedSampleModel
int numBands = sampleModel.getNumBands();
if (numBands == 1) {
return true;
}
// Determine banks used
int[] bankIndices = sm.getBankIndices();
for (int i = 0; i < numBands; i++) {
if (bankIndices[i] != 0) {
return false;
}
}
// Determine range of band offsets
int[] bandOffsets = sm.getBandOffsets();
int minOffset = bandOffsets[0];
int maxOffset = minOffset;
for (int i = 1; i < numBands; i++) {
int offset = bandOffsets[i];
if (offset < minOffset) {
minOffset = offset;
}
if (offset > maxOffset) {
maxOffset = offset;
}
}
if (maxOffset - minOffset >= sm.getPixelStride()) {
return false;
}
return true;
}
/**
* Constructs a ByteInterleavedRaster with the given SampleModel,
* DataBuffer, and parent. DataBuffer must be a DataBufferByte and
* SampleModel must be of type SinglePixelPackedSampleModel
* or InterleavedSampleModel.
* When translated into the base Raster's
* coordinate system, aRegion must be contained by the base Raster.
* Origin is the coordinate in the new Raster's coordinate system of
* the origin of the base Raster. (The base Raster is the Raster's
* ancestor which has no parent.)
*
* Note that this constructor should generally be called by other
* constructors or create methods, it should not be used directly.
* @param sampleModel The SampleModel that specifies the layout.
* @param dataBuffer The DataBufferShort that contains the image data.
* @param aRegion The Rectangle that specifies the image area.
* @param origin The Point that specifies the origin.
* @param parent The parent (if any) of this raster.
*/
public ByteInterleavedRaster(SampleModel sampleModel,
DataBuffer dataBuffer,
Rectangle aRegion,
Point origin,
ByteInterleavedRaster parent) {
super(sampleModel, dataBuffer, aRegion, origin, parent);
this.maxX = minX + width;
this.maxY = minY + height;
if (!(dataBuffer instanceof DataBufferByte)) {
throw new RasterFormatException("ByteInterleavedRasters must have " +
"byte DataBuffers");
}
DataBufferByte dbb = (DataBufferByte)dataBuffer;
this.data = stealData(dbb, 0);
int xOffset = aRegion.x - origin.x;
int yOffset = aRegion.y - origin.y;
if (sampleModel instanceof PixelInterleavedSampleModel ||
(sampleModel instanceof ComponentSampleModel &&
isInterleaved((ComponentSampleModel)sampleModel))) {
ComponentSampleModel csm = (ComponentSampleModel)sampleModel;
this.scanlineStride = csm.getScanlineStride();
this.pixelStride = csm.getPixelStride();
this.dataOffsets = csm.getBandOffsets();
for (int i = 0; i < getNumDataElements(); i++) {
dataOffsets[i] += xOffset*pixelStride+yOffset*scanlineStride;
}
} else if (sampleModel instanceof SinglePixelPackedSampleModel) {
SinglePixelPackedSampleModel sppsm =
(SinglePixelPackedSampleModel)sampleModel;
this.packed = true;
this.bitMasks = sppsm.getBitMasks();
this.bitOffsets = sppsm.getBitOffsets();
this.scanlineStride = sppsm.getScanlineStride();
this.pixelStride = 1;
this.dataOffsets = new int[1];
this.dataOffsets[0] = dbb.getOffset();
dataOffsets[0] += xOffset*pixelStride+yOffset*scanlineStride;
} else {
throw new RasterFormatException("ByteInterleavedRasters must " +
"have PixelInterleavedSampleModel, SinglePixelPackedSampleModel"+
" or interleaved ComponentSampleModel. Sample model is " +
sampleModel);
}
this.bandOffset = this.dataOffsets[0];
this.dbOffsetPacked = dataBuffer.getOffset() -
sampleModelTranslateY*scanlineStride -
sampleModelTranslateX*pixelStride;
this.dbOffset = dbOffsetPacked -
(xOffset*pixelStride+yOffset*scanlineStride);
// Set inOrder to true if the data elements are in order and
// have no gaps between them
this.inOrder = false;
if (numDataElements == pixelStride) {
inOrder = true;
for (int i = 1; i < numDataElements; i++) {
if (dataOffsets[i] - dataOffsets[0] != i) {
inOrder = false;
break;
}
}
}
verify();
}
/**
* Returns a copy of the data offsets array. For each band the data offset
* is the index into the band's data array, of the first sample of the
* band.
*/
public int[] getDataOffsets() {
return (int[]) dataOffsets.clone();
}
/**
* Returns the data offset for the specified band. The data offset
* is the index into the data array
* in which the first sample of the first scanline is stored.
* @param band The band whose offset is returned.
*/
public int getDataOffset(int band) {
return dataOffsets[band];
}
/**
* Returns the scanline stride -- the number of data array elements between
* a given sample and the sample in the same column of the next row in the
* same band.
*/
public int getScanlineStride() {
return scanlineStride;
}
/**
* Returns pixel stride -- the number of data array elements between two
* samples for the same band on the same scanline.
*/
public int getPixelStride() {
return pixelStride;
}
/**
* Returns a reference to the data array.
*/
public byte[] getDataStorage() {
return data;
}
/**
* Returns the data elements for all bands at the specified
* location.
* An ArrayIndexOutOfBounds exception will be thrown at runtime
* if the pixel coordinate is out of bounds.
* A ClassCastException will be thrown if the input object is non null
* and references anything other than an array of transferType.
* @param x The X coordinate of the pixel location.
* @param y The Y coordinate of the pixel location.
* @param outData An object reference to an array of type defined by
* getTransferType() and length getNumDataElements().
* If null an array of appropriate type and size will be
* allocated.
* @return An object reference to an array of type defined by
* getTransferType() with the request pixel data.
*/
public Object getDataElements(int x, int y, Object obj) {
if ((x < this.minX) || (y < this.minY) ||
(x >= this.maxX) || (y >= this.maxY)) {
throw new ArrayIndexOutOfBoundsException
("Coordinate out of bounds!");
}
byte outData[];
if (obj == null) {
outData = new byte[numDataElements];
} else {
outData = (byte[])obj;
}
int off = (y-minY)*scanlineStride +
(x-minX)*pixelStride;
for (int band = 0; band < numDataElements; band++) {
outData[band] = data[dataOffsets[band] + off];
}
return outData;
}
/**
* Returns an array of data elements from the specified rectangular
* region.
* An ArrayIndexOutOfBounds exception will be thrown at runtime
* if the pixel coordinates are out of bounds.
* A ClassCastException will be thrown if the input object is non null
* and references anything other than an array of transferType.
* <pre>
* byte[] bandData = (byte[])raster.getDataElements(x, y, w, h, null);
* int numDataElements = raster.getNumDataElements();
* byte[] pixel = new byte[numDataElements];
* // To find a data element at location (x2, y2)
* System.arraycopy(bandData, ((y2-y)*w + (x2-x))*numDataElements,
* pixel, 0, numDataElements);
* </pre>
* @param x The X coordinate of the upper left pixel location.
* @param y The Y coordinate of the upper left pixel location.
* @param width Width of the pixel rectangle.
* @param height Height of the pixel rectangle.
* @param outData An object reference to an array of type defined by
* getTransferType() and length w*h*getNumDataElements().
* If null an array of appropriate type and size will be
* allocated.
* @return An object reference to an array of type defined by
* getTransferType() with the request pixel data.
*/
public Object getDataElements(int x, int y, int w, int h, Object obj) {
return getByteData(x, y, w, h, (byte[])obj);
}
/**
* Returns a byte array of data elements from the specified rectangular
* region for the specified band.
* An ArrayIndexOutOfBounds exception will be thrown at runtime
* if the pixel coordinates are out of bounds.
* <pre>
* byte[] bandData = raster.getByteData(x, y, w, h, null);
* // To find the data element at location (x2, y2)
* byte bandElement = bandData[((y2-y)*w + (x2-x))];
* </pre>
* @param x The X coordinate of the upper left pixel location.
* @param y The Y coordinate of the upper left pixel location.
* @param width Width of the pixel rectangle.
* @param height Height of the pixel rectangle.
* @param band The band to return.
* @param outData If non-null, data elements for all bands
* at the specified location are returned in this array.
* @return Data array with data elements for all bands.
*/
public byte[] getByteData(int x, int y, int w, int h,
int band, byte[] outData) {
// Bounds check for 'band' will be performed automatically
if ((x < this.minX) || (y < this.minY) ||
(x + w > this.maxX) || (y + h > this.maxY)) {
throw new ArrayIndexOutOfBoundsException
("Coordinate out of bounds!");
}
if (outData == null) {
outData = new byte[w*h];
}
int yoff = (y-minY)*scanlineStride +
(x-minX)*pixelStride + dataOffsets[band];
int xoff;
int off = 0;
int xstart;
int ystart;
if (pixelStride == 1) {
if (scanlineStride == w) {
System.arraycopy(data, yoff, outData, 0, w*h);
} else {
for (ystart=0; ystart < h; ystart++, yoff += scanlineStride) {
System.arraycopy(data, yoff, outData, off, w);
off += w;
}
}
} else {
for (ystart=0; ystart < h; ystart++, yoff += scanlineStride) {
xoff = yoff;
for (xstart=0; xstart < w; xstart++, xoff += pixelStride) {
outData[off++] = data[xoff];
}
}
}
return outData;
}
/**
* Returns a byte array of data elements from the specified rectangular
* region.
* An ArrayIndexOutOfBounds exception will be thrown at runtime
* if the pixel coordinates are out of bounds.
* <pre>
* byte[] bandData = raster.getByteData(x, y, w, h, null);
* int numDataElements = raster.getnumDataElements();
* byte[] pixel = new byte[numDataElements];
* // To find a data element at location (x2, y2)
* System.arraycopy(bandData, ((y2-y)*w + (x2-x))*numDataElements,
* pixel, 0, numDataElements);
* </pre>
* @param x The X coordinate of the upper left pixel location.
* @param y The Y coordinate of the upper left pixel location.
* @param width Width of the pixel rectangle.
* @param height Height of the pixel rectangle.
* @param outData If non-null, data elements for all bands
* at the specified location are returned in this array.
* @return Data array with data elements for all bands.
*/
public byte[] getByteData(int x, int y, int w, int h, byte[] outData) {
if ((x < this.minX) || (y < this.minY) ||
(x + w > this.maxX) || (y + h > this.maxY)) {
throw new ArrayIndexOutOfBoundsException
("Coordinate out of bounds!");
}
if (outData == null) {
outData = new byte[numDataElements*w*h];
}
int yoff = (y-minY)*scanlineStride +
(x-minX)*pixelStride;
int xoff;
int off = 0;
int xstart;
int ystart;
if (inOrder) {
yoff += dataOffsets[0];
int rowBytes = w*pixelStride;
if (scanlineStride == rowBytes) {
System.arraycopy(data, yoff, outData, off, rowBytes*h);
} else {
for (ystart=0; ystart < h; ystart++, yoff += scanlineStride) {
System.arraycopy(data, yoff, outData, off, rowBytes);
off += rowBytes;
}
}
} else if (numDataElements == 1) {
yoff += dataOffsets[0];
for (ystart=0; ystart < h; ystart++, yoff += scanlineStride) {
xoff = yoff;
for (xstart=0; xstart < w; xstart++, xoff += pixelStride) {
outData[off++] = data[xoff];
}
}
} else if (numDataElements == 2) {
yoff += dataOffsets[0];
int d1 = dataOffsets[1] - dataOffsets[0];
for (ystart=0; ystart < h; ystart++, yoff += scanlineStride) {
xoff = yoff;
for (xstart=0; xstart < w; xstart++, xoff += pixelStride) {
outData[off++] = data[xoff];
outData[off++] = data[xoff + d1];
}
}
} else if (numDataElements == 3) {
yoff += dataOffsets[0];
int d1 = dataOffsets[1] - dataOffsets[0];
int d2 = dataOffsets[2] - dataOffsets[0];
for (ystart=0; ystart < h; ystart++, yoff += scanlineStride) {
xoff = yoff;
for (xstart=0; xstart < w; xstart++, xoff += pixelStride) {
outData[off++] = data[xoff];
outData[off++] = data[xoff + d1];
outData[off++] = data[xoff + d2];
}
}
} else if (numDataElements == 4) {
yoff += dataOffsets[0];
int d1 = dataOffsets[1] - dataOffsets[0];
int d2 = dataOffsets[2] - dataOffsets[0];
int d3 = dataOffsets[3] - dataOffsets[0];
for (ystart=0; ystart < h; ystart++, yoff += scanlineStride) {
xoff = yoff;
for (xstart=0; xstart < w; xstart++, xoff += pixelStride) {
outData[off++] = data[xoff];
outData[off++] = data[xoff + d1];
outData[off++] = data[xoff + d2];
outData[off++] = data[xoff + d3];
}
}
} else {
for (ystart=0; ystart < h; ystart++, yoff += scanlineStride) {
xoff = yoff;
for (xstart=0; xstart < w; xstart++, xoff += pixelStride) {
for (int c = 0; c < numDataElements; c++) {
outData[off++] = data[dataOffsets[c] + xoff];
}
}
}
}
return outData;
}
/**
* Stores the data elements for all bands at the specified location.
* An ArrayIndexOutOfBounds exception will be thrown at runtime
* if the pixel coordinate is out of bounds.
* A ClassCastException will be thrown if the input object is non null
* and references anything other than an array of transferType.
* @param x The X coordinate of the pixel location.
* @param y The Y coordinate of the pixel location.
* @param inData An object reference to an array of type defined by
* getTransferType() and length getNumDataElements()
* containing the pixel data to place at x,y.
*/
public void setDataElements(int x, int y, Object obj) {
if ((x < this.minX) || (y < this.minY) ||
(x >= this.maxX) || (y >= this.maxY)) {
throw new ArrayIndexOutOfBoundsException
("Coordinate out of bounds!");
}
byte inData[] = (byte[])obj;
int off = (y-minY)*scanlineStride +
(x-minX)*pixelStride;
for (int i = 0; i < numDataElements; i++) {
data[dataOffsets[i] + off] = inData[i];
}
markDirty();
}
/**
* Stores the Raster data at the specified location.
* An ArrayIndexOutOfBounds exception will be thrown at runtime
* if the pixel coordinates are out of bounds.
* @param x The X coordinate of the pixel location.
* @param y The Y coordinate of the pixel location.
* @param inRaster Raster of data to place at x,y location.
*/
public void setDataElements(int x, int y, Raster inRaster) {
int srcOffX = inRaster.getMinX();
int srcOffY = inRaster.getMinY();
int dstOffX = x + srcOffX;
int dstOffY = y + srcOffY;
int width = inRaster.getWidth();
int height = inRaster.getHeight();
if ((dstOffX < this.minX) || (dstOffY < this.minY) ||
(dstOffX + width > this.maxX) || (dstOffY + height > this.maxY)) {
throw new ArrayIndexOutOfBoundsException
("Coordinate out of bounds!");
}
setDataElements(dstOffX, dstOffY, srcOffX, srcOffY,
width, height, inRaster);
}
/**
* Stores the Raster data at the specified location.
* @param dstX The absolute X coordinate of the destination pixel
* that will receive a copy of the upper-left pixel of the
* inRaster
* @param dstY The absolute Y coordinate of the destination pixel
* that will receive a copy of the upper-left pixel of the
* inRaster
* @param srcX The absolute X coordinate of the upper-left source
* pixel that will be copied into this Raster
* @param srcY The absolute Y coordinate of the upper-left source
* pixel that will be copied into this Raster
* @param width The number of pixels to store horizontally
* @param height The number of pixels to store vertically
* @param inRaster Raster of data to place at x,y location.
*/
private void setDataElements(int dstX, int dstY,
int srcX, int srcY,
int width, int height,
Raster inRaster) {
// Assume bounds checking has been performed previously
if (width <= 0 || height <= 0) {
return;
}
// Write inRaster (minX, minY) to (dstX, dstY)
int srcOffX = inRaster.getMinX();
int srcOffY = inRaster.getMinY();
Object tdata = null;
if (inRaster instanceof ByteInterleavedRaster) {
ByteInterleavedRaster bct = (ByteInterleavedRaster) inRaster;
byte[] bdata = bct.getDataStorage();
// copy whole scanlines
if (inOrder && bct.inOrder && pixelStride == bct.pixelStride) {
int toff = bct.getDataOffset(0);
int tss = bct.getScanlineStride();
int tps = bct.getPixelStride();
int srcOffset = toff +
(srcY - srcOffY) * tss +
(srcX - srcOffX) * tps;
int dstOffset = dataOffsets[0] +
(dstY - minY) * scanlineStride +
(dstX - minX) * pixelStride;
int nbytes = width*pixelStride;
for (int tmpY=0; tmpY < height; tmpY++) {
System.arraycopy(bdata, srcOffset,
data, dstOffset, nbytes);
srcOffset += tss;
dstOffset += scanlineStride;
}
markDirty();
return;
}
}
for (int startY=0; startY < height; startY++) {
// Grab one scanline at a time
tdata = inRaster.getDataElements(srcOffX, srcOffY+startY,
width, 1, tdata);
setDataElements(dstX, dstY + startY, width, 1, tdata);
}
}
/**
* Stores an array of data elements into the specified rectangular
* region.
* An ArrayIndexOutOfBounds exception will be thrown at runtime
* if the pixel coordinates are out of bounds.
* A ClassCastException will be thrown if the input object is non null
* and references anything other than an array of transferType.
* The data elements in the
* data array are assumed to be packed. That is, a data element
* for the nth band at location (x2, y2) would be found at:
* <pre>
* inData[((y2-y)*w + (x2-x))*numDataElements + n]
* </pre>
* @param x The X coordinate of the upper left pixel location.
* @param y The Y coordinate of the upper left pixel location.
* @param w Width of the pixel rectangle.
* @param h Height of the pixel rectangle.
* @param inData An object reference to an array of type defined by
* getTransferType() and length w*h*getNumDataElements()
* containing the pixel data to place between x,y and
* x+h, y+h.
*/
public void setDataElements(int x, int y, int w, int h, Object obj) {
putByteData(x, y, w, h, (byte[])obj);
}
/**
* Stores a byte array of data elements into the specified rectangular
* region for the specified band.
* An ArrayIndexOutOfBounds exception will be thrown at runtime
* if the pixel coordinates are out of bounds.
* The data elements in the
* data array are assumed to be packed. That is, a data element
* at location (x2, y2) would be found at:
* <pre>
* inData[((y2-y)*w + (x2-x)) + n]
* </pre>
* @param x The X coordinate of the upper left pixel location.
* @param y The Y coordinate of the upper left pixel location.
* @param w Width of the pixel rectangle.
* @param h Height of the pixel rectangle.
* @param band The band to set.
* @param inData The data elements to be stored.
*/
public void putByteData(int x, int y, int w, int h,
int band, byte[] inData) {
// Bounds check for 'band' will be performed automatically
if ((x < this.minX) || (y < this.minY) ||
(x + w > this.maxX) || (y + h > this.maxY)) {
throw new ArrayIndexOutOfBoundsException
("Coordinate out of bounds!");
}
int yoff = (y-minY)*scanlineStride +
(x-minX)*pixelStride + dataOffsets[band];
int xoff;
int off = 0;
int xstart;
int ystart;
if (pixelStride == 1) {
if (scanlineStride == w) {
System.arraycopy(inData, 0, data, yoff, w*h);
}
else {
for (ystart=0; ystart < h; ystart++, yoff += scanlineStride) {
System.arraycopy(inData, off, data, yoff, w);
off += w;
}
}
}
else {
for (ystart=0; ystart < h; ystart++, yoff += scanlineStride) {
xoff = yoff;
for (xstart=0; xstart < w; xstart++, xoff += pixelStride) {
data[xoff] = inData[off++];
}
}
}
markDirty();
}
/**
* Stores a byte array of data elements into the specified rectangular
* region.
* An ArrayIndexOutOfBounds exception will be thrown at runtime
* if the pixel coordinates are out of bounds.
* The data elements in the
* data array are assumed to be packed. That is, a data element
* for the nth band at location (x2, y2) would be found at:
* <pre>
* inData[((y2-y)*w + (x2-x))*numDataElements + n]
* </pre>
* @param x The X coordinate of the upper left pixel location.
* @param y The Y coordinate of the upper left pixel location.
* @param w Width of the pixel rectangle.
* @param h Height of the pixel rectangle.
* @param inData The data elements to be stored.
*/
public void putByteData(int x, int y, int w, int h, byte[] inData) {
if ((x < this.minX) || (y < this.minY) ||
(x + w > this.maxX) || (y + h > this.maxY)) {
throw new ArrayIndexOutOfBoundsException
("Coordinate out of bounds!");
}
int yoff = (y-minY)*scanlineStride +
(x-minX)*pixelStride;
int xoff;
int off = 0;
int xstart;
int ystart;
if (inOrder) {
yoff += dataOffsets[0];
int rowBytes = w*pixelStride;
if (rowBytes == scanlineStride) {
System.arraycopy(inData, 0, data, yoff, rowBytes*h);
} else {
for (ystart=0; ystart < h; ystart++, yoff += scanlineStride) {
System.arraycopy(inData, off, data, yoff, rowBytes);
off += rowBytes;
}
}
} else if (numDataElements == 1) {
yoff += dataOffsets[0];
for (ystart=0; ystart < h; ystart++, yoff += scanlineStride) {
xoff = yoff;
for (xstart=0; xstart < w; xstart++, xoff += pixelStride) {
data[xoff] = inData[off++];
}
}
} else if (numDataElements == 2) {
yoff += dataOffsets[0];
int d1 = dataOffsets[1] - dataOffsets[0];
for (ystart=0; ystart < h; ystart++, yoff += scanlineStride) {
xoff = yoff;
for (xstart=0; xstart < w; xstart++, xoff += pixelStride) {
data[xoff] = inData[off++];
data[xoff + d1] = inData[off++];
}
}
} else if (numDataElements == 3) {
yoff += dataOffsets[0];
int d1 = dataOffsets[1] - dataOffsets[0];
int d2 = dataOffsets[2] - dataOffsets[0];
for (ystart=0; ystart < h; ystart++, yoff += scanlineStride) {
xoff = yoff;
for (xstart=0; xstart < w; xstart++, xoff += pixelStride) {
data[xoff] = inData[off++];
data[xoff + d1] = inData[off++];
data[xoff + d2] = inData[off++];
}
}
} else if (numDataElements == 4) {
yoff += dataOffsets[0];
int d1 = dataOffsets[1] - dataOffsets[0];
int d2 = dataOffsets[2] - dataOffsets[0];
int d3 = dataOffsets[3] - dataOffsets[0];
for (ystart=0; ystart < h; ystart++, yoff += scanlineStride) {
xoff = yoff;
for (xstart=0; xstart < w; xstart++, xoff += pixelStride) {
data[xoff] = inData[off++];
data[xoff + d1] = inData[off++];
data[xoff + d2] = inData[off++];
data[xoff + d3] = inData[off++];
}
}
} else {
for (ystart=0; ystart < h; ystart++, yoff += scanlineStride) {
xoff = yoff;
for (xstart=0; xstart < w; xstart++, xoff += pixelStride) {
for (int c = 0; c < numDataElements; c++) {
data[dataOffsets[c] + xoff] = inData[off++];
}
}
}
}
markDirty();
}
public int getSample(int x, int y, int b) {
if ((x < this.minX) || (y < this.minY) ||
(x >= this.maxX) || (y >= this.maxY)) {
throw new ArrayIndexOutOfBoundsException
("Coordinate out of bounds!");
}
if (packed) {
int offset = y*scanlineStride + x + dbOffsetPacked;
byte sample = data[offset];
return (sample & bitMasks[b]) >>> bitOffsets[b];
} else {
int offset = y*scanlineStride + x*pixelStride + dbOffset;
return data[offset + dataOffsets[b]] & 0xff;
}
}
public void setSample(int x, int y, int b, int s) {
if ((x < this.minX) || (y < this.minY) ||
(x >= this.maxX) || (y >= this.maxY)) {
throw new ArrayIndexOutOfBoundsException
("Coordinate out of bounds!");
}
if (packed) {
int offset = y*scanlineStride + x + dbOffsetPacked;
int bitMask = bitMasks[b];
byte value = data[offset];
value &= ~bitMask;
value |= (s << bitOffsets[b]) & bitMask;
data[offset] = value;
} else {
int offset = y*scanlineStride + x*pixelStride + dbOffset;
data[offset + dataOffsets[b]] = (byte)s;
}
markDirty();
}
public int[] getSamples(int x, int y, int w, int h, int b,
int[] iArray) {
if ((x < this.minX) || (y < this.minY) ||
(x + w > this.maxX) || (y + h > this.maxY)) {
throw new ArrayIndexOutOfBoundsException
("Coordinate out of bounds!");
}
int samples[];
if (iArray != null) {
samples = iArray;
} else {
samples = new int [w*h];
}
int lineOffset = y*scanlineStride + x*pixelStride;
int dstOffset = 0;
if (packed) {
lineOffset += dbOffsetPacked;
int bitMask = bitMasks[b];
int bitOffset = bitOffsets[b];
for (int j = 0; j < h; j++) {
int sampleOffset = lineOffset;
for (int i = 0; i < w; i++) {
int value = data[sampleOffset++];
samples[dstOffset++] = ((value & bitMask) >>> bitOffset);
}
lineOffset += scanlineStride;
}
} else {
lineOffset += dbOffset + dataOffsets[b];
for (int j = 0; j < h; j++) {
int sampleOffset = lineOffset;
for (int i = 0; i < w; i++) {
samples[dstOffset++] = data[sampleOffset] & 0xff;
sampleOffset += pixelStride;
}
lineOffset += scanlineStride;
}
}
return samples;
}
public void setSamples(int x, int y, int w, int h, int b, int iArray[]) {
if ((x < this.minX) || (y < this.minY) ||
(x + w > this.maxX) || (y + h > this.maxY)) {
throw new ArrayIndexOutOfBoundsException
("Coordinate out of bounds!");
}
int lineOffset = y*scanlineStride + x*pixelStride;
int srcOffset = 0;
if (packed) {
lineOffset += dbOffsetPacked;
int bitMask = bitMasks[b];
for (int j = 0; j < h; j++) {
int sampleOffset = lineOffset;
for (int i = 0; i < w; i++) {
byte value = data[sampleOffset];
value &= ~bitMask;
int sample = iArray[srcOffset++];
value |= (sample << bitOffsets[b]) & bitMask;
data[sampleOffset++] = value;
}
lineOffset += scanlineStride;
}
} else {
lineOffset += dbOffset + dataOffsets[b];
for (int i = 0; i < h; i++) {
int sampleOffset = lineOffset;
for (int j = 0; j < w; j++) {
data[sampleOffset] = (byte)iArray[srcOffset++];
sampleOffset += pixelStride;
}
lineOffset += scanlineStride;
}
}
markDirty();
}
public int[] getPixels(int x, int y, int w, int h, int[] iArray) {
if ((x < this.minX) || (y < this.minY) ||
(x + w > this.maxX) || (y + h > this.maxY)) {
throw new ArrayIndexOutOfBoundsException
("Coordinate out of bounds!");
}
int pixels[];
if (iArray != null) {
pixels = iArray;
} else {
pixels = new int[w*h*numBands];
}
int lineOffset = y*scanlineStride + x*pixelStride;
int dstOffset = 0;
if (packed) {
lineOffset += dbOffsetPacked;
for (int j = 0; j < h; j++) {
for (int i = 0; i < w; i++) {
int value = data[lineOffset + i];
for (int k = 0; k < numBands; k++) {
pixels[dstOffset++] =
(value & bitMasks[k]) >>> bitOffsets[k];
}
}
lineOffset += scanlineStride;
}
} else {
lineOffset += dbOffset;
int d0 = dataOffsets[0];
if (numBands == 1) {
for (int j = 0; j < h; j++) {
int pixelOffset = lineOffset + d0;
for (int i = 0; i < w; i++) {
pixels[dstOffset++] = data[pixelOffset] & 0xff;
pixelOffset += pixelStride;
}
lineOffset += scanlineStride;
}
} else if (numBands == 2) {
int d1 = dataOffsets[1] - d0;
for (int j = 0; j < h; j++) {
int pixelOffset = lineOffset + d0;
for (int i = 0; i < w; i++) {
pixels[dstOffset++] = data[pixelOffset] & 0xff;
pixels[dstOffset++] = data[pixelOffset + d1] & 0xff;
pixelOffset += pixelStride;
}
lineOffset += scanlineStride;
}
} else if (numBands == 3) {
int d1 = dataOffsets[1] - d0;
int d2 = dataOffsets[2] - d0;
for (int j = 0; j < h; j++) {
int pixelOffset = lineOffset + d0;
for (int i = 0; i < w; i++) {
pixels[dstOffset++] = data[pixelOffset] & 0xff;
pixels[dstOffset++] = data[pixelOffset + d1] & 0xff;
pixels[dstOffset++] = data[pixelOffset + d2] & 0xff;
pixelOffset += pixelStride;
}
lineOffset += scanlineStride;
}
} else if (numBands == 4) {
int d1 = dataOffsets[1] - d0;
int d2 = dataOffsets[2] - d0;
int d3 = dataOffsets[3] - d0;
for (int j = 0; j < h; j++) {
int pixelOffset = lineOffset + d0;
for (int i = 0; i < w; i++) {
pixels[dstOffset++] = data[pixelOffset] & 0xff;
pixels[dstOffset++] = data[pixelOffset + d1] & 0xff;
pixels[dstOffset++] = data[pixelOffset + d2] & 0xff;
pixels[dstOffset++] = data[pixelOffset + d3] & 0xff;
pixelOffset += pixelStride;
}
lineOffset += scanlineStride;
}
} else {
for (int j = 0; j < h; j++) {
int pixelOffset = lineOffset;
for (int i = 0; i < w; i++) {
for (int k = 0; k < numBands; k++) {
pixels[dstOffset++] =
data[pixelOffset + dataOffsets[k]] & 0xff;
}
pixelOffset += pixelStride;
}
lineOffset += scanlineStride;
}
}
}
return pixels;
}
public void setPixels(int x, int y, int w, int h, int[] iArray) {
if ((x < this.minX) || (y < this.minY) ||
(x + w > this.maxX) || (y + h > this.maxY)) {
throw new ArrayIndexOutOfBoundsException
("Coordinate out of bounds!");
}
int lineOffset = y*scanlineStride + x*pixelStride;
int srcOffset = 0;
if (packed) {
lineOffset += dbOffsetPacked;
for (int j = 0; j < h; j++) {
for (int i = 0; i < w; i++) {
int value = 0;
for (int k = 0; k < numBands; k++) {
int srcValue = iArray[srcOffset++];
value |= ((srcValue << bitOffsets[k])
& bitMasks[k]);
}
data[lineOffset + i] = (byte)value;
}
lineOffset += scanlineStride;
}
} else {
lineOffset += dbOffset;
int d0 = dataOffsets[0];
if (numBands == 1) {
for (int j = 0; j < h; j++) {
int pixelOffset = lineOffset + d0;
for (int i = 0; i < w; i++) {
data[pixelOffset] = (byte)iArray[srcOffset++];
pixelOffset += pixelStride;
}
lineOffset += scanlineStride;
}
} else if (numBands == 2) {
int d1 = dataOffsets[1] - d0;
for (int j = 0; j < h; j++) {
int pixelOffset = lineOffset + d0;
for (int i = 0; i < w; i++) {
data[pixelOffset] = (byte)iArray[srcOffset++];
data[pixelOffset + d1] = (byte)iArray[srcOffset++];
pixelOffset += pixelStride;
}
lineOffset += scanlineStride;
}
} else if (numBands == 3) {
int d1 = dataOffsets[1] - d0;
int d2 = dataOffsets[2] - d0;
for (int j = 0; j < h; j++) {
int pixelOffset = lineOffset + d0;
for (int i = 0; i < w; i++) {
data[pixelOffset] = (byte)iArray[srcOffset++];
data[pixelOffset + d1] = (byte)iArray[srcOffset++];
data[pixelOffset + d2] = (byte)iArray[srcOffset++];
pixelOffset += pixelStride;
}
lineOffset += scanlineStride;
}
} else if (numBands == 4) {
int d1 = dataOffsets[1] - d0;
int d2 = dataOffsets[2] - d0;
int d3 = dataOffsets[3] - d0;
for (int j = 0; j < h; j++) {
int pixelOffset = lineOffset + d0;
for (int i = 0; i < w; i++) {
data[pixelOffset] = (byte)iArray[srcOffset++];
data[pixelOffset + d1] = (byte)iArray[srcOffset++];
data[pixelOffset + d2] = (byte)iArray[srcOffset++];
data[pixelOffset + d3] = (byte)iArray[srcOffset++];
pixelOffset += pixelStride;
}
lineOffset += scanlineStride;
}
} else {
for (int j = 0; j < h; j++) {
int pixelOffset = lineOffset;
for (int i = 0; i < w; i++) {
for (int k = 0; k < numBands; k++) {
data[pixelOffset + dataOffsets[k]] =
(byte)iArray[srcOffset++];
}
pixelOffset += pixelStride;
}
lineOffset += scanlineStride;
}
}
}
markDirty();
}
public void setRect(int dx, int dy, Raster srcRaster) {
if (!(srcRaster instanceof ByteInterleavedRaster)) {
super.setRect(dx, dy, srcRaster);
return;
}
int width = srcRaster.getWidth();
int height = srcRaster.getHeight();
int srcOffX = srcRaster.getMinX();
int srcOffY = srcRaster.getMinY();
int dstOffX = dx+srcOffX;
int dstOffY = dy+srcOffY;
// Clip to this raster
if (dstOffX < this.minX) {
int skipX = minX - dstOffX;
width -= skipX;
srcOffX += skipX;
dstOffX = this.minX;
}
if (dstOffY < this.minY) {
int skipY = this.minY - dstOffY;
height -= skipY;
srcOffY += skipY;
dstOffY = this.minY;
}
if (dstOffX+width > this.maxX) {
width = this.maxX - dstOffX;
}
if (dstOffY+height > this.maxY) {
height = this.maxY - dstOffY;
}
setDataElements(dstOffX, dstOffY,
srcOffX, srcOffY,
width, height, srcRaster);
}
/**
* Creates a subraster given a region of the raster. The x and y
* coordinates specify the horizontal and vertical offsets
* from the upper-left corner of this raster to the upper-left corner
* of the subraster. A subset of the bands of the parent Raster may
* be specified. If this is null, then all the bands are present in the
* subRaster. A translation to the subRaster may also be specified.
* Note that the subraster will reference the same
* DataBuffer as the parent raster, but using different offsets.
* @param x X offset.
* @param y Y offset.
* @param width Width (in pixels) of the subraster.
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