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Diffstat (limited to 'external/ikvm/openjdk/sun/awt/image/ByteComponentRaster.java')
| -rw-r--r-- | external/ikvm/openjdk/sun/awt/image/ByteComponentRaster.java | 919 |
1 files changed, 0 insertions, 919 deletions
diff --git a/external/ikvm/openjdk/sun/awt/image/ByteComponentRaster.java b/external/ikvm/openjdk/sun/awt/image/ByteComponentRaster.java deleted file mode 100644 index 912542a7bf..0000000000 --- a/external/ikvm/openjdk/sun/awt/image/ByteComponentRaster.java +++ /dev/null @@ -1,919 +0,0 @@ -/* - * Copyright (c) 1997, 2007, 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 - * or visit www.oracle.com if you need additional information or have any - * questions. - */ - -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.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. - * 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. - * <p> - * For example, 3-3-2 RGB image data can be represented by a - * ByteComponentRaster using a SinglePixelPackedSampleModel and - * a ComponentColorModel. - * - */ -public class ByteComponentRaster extends SunWritableRaster { - - /** private band offset for use by native code */ - protected int bandOffset; - - /** Data offsets for each band of image data. */ - protected int[] dataOffsets; - - /** Scanline stride of the image data contained in this Raster. */ - protected int scanlineStride; - - /** Pixel stride of the image data contained in this Raster. */ - protected int pixelStride; - - /** The image data array. */ - protected byte[] data; - - int type; - - /** 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 ByteComponentRaster 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 ComponentSampleModel. - * @param sampleModel The SampleModel that specifies the layout. - * @param origin The Point that specified the origin. - */ - public ByteComponentRaster(SampleModel sampleModel, Point origin) { - this(sampleModel, - sampleModel.createDataBuffer(), - new Rectangle(origin.x, - origin.y, - sampleModel.getWidth(), - sampleModel.getHeight()), - origin, - null); - } - - /** - * Constructs a ByteComponentRaster 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 ComponentSampleModel. - * @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 ByteComponentRaster(SampleModel sampleModel, - DataBuffer dataBuffer, - Point origin) { - this(sampleModel, - dataBuffer, - new Rectangle(origin.x, - origin.y, - sampleModel.getWidth(), - sampleModel.getHeight()), - origin, - null); - } - - /** - * Constructs a ByteComponentRaster with the given SampleModel, - * DataBuffer, and parent. DataBuffer must be a DataBufferByte and - * SampleModel must be of type SinglePixelPackedSampleModel - * or ComponentSampleModel. - * 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 ByteComponentRaster(SampleModel sampleModel, - DataBuffer dataBuffer, - Rectangle aRegion, - Point origin, - ByteComponentRaster parent) { - super(sampleModel, dataBuffer, aRegion, origin, parent); - this.maxX = minX + width; - this.maxY = minY + height; - - if (!(dataBuffer instanceof DataBufferByte)) { - throw new RasterFormatException("ByteComponentRasters must have " + - "byte DataBuffers"); - } - - DataBufferByte dbb = (DataBufferByte)dataBuffer; - this.data = stealData(dbb, 0); - if (dbb.getNumBanks() != 1) { - throw new - RasterFormatException("DataBuffer for ByteComponentRasters"+ - " must only have 1 bank."); - } - int dbOffset = dbb.getOffset(); - - if (sampleModel instanceof ComponentSampleModel) { - ComponentSampleModel ism = (ComponentSampleModel)sampleModel; - this.type = IntegerComponentRaster.TYPE_BYTE_SAMPLES; - this.scanlineStride = ism.getScanlineStride(); - this.pixelStride = ism.getPixelStride(); - this.dataOffsets = ism.getBandOffsets(); - int xOffset = aRegion.x - origin.x; - int yOffset = aRegion.y - origin.y; - for (int i = 0; i < getNumDataElements(); i++) { - dataOffsets[i] += dbOffset + - xOffset*pixelStride+yOffset*scanlineStride; - } - } else if (sampleModel instanceof SinglePixelPackedSampleModel) { - SinglePixelPackedSampleModel sppsm = - (SinglePixelPackedSampleModel)sampleModel; - this.type = IntegerComponentRaster.TYPE_BYTE_PACKED_SAMPLES; - this.scanlineStride = sppsm.getScanlineStride(); - this.pixelStride = 1; - this.dataOffsets = new int[1]; - this.dataOffsets[0] = dbOffset; - int xOffset = aRegion.x - origin.x; - int yOffset = aRegion.y - origin.y; - dataOffsets[0] += xOffset*pixelStride+yOffset*scanlineStride; - } else { - throw new RasterFormatException("IntegerComponentRasters must " + - "have ComponentSampleModel or SinglePixelPackedSampleModel"); - } - this.bandOffset = this.dataOffsets[0]; - - verify(false); - } - - /** - * 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) { - if ((x < this.minX) || (y < this.minY) || - (x + w > this.maxX) || (y + h > this.maxY)) { - throw new ArrayIndexOutOfBoundsException - ("Coordinate out of bounds!"); - } - byte outData[]; - if (obj == null) { - outData = new byte[w*h*numDataElements]; - } else { - outData = (byte[])obj; - } - - int yoff = (y-minY)*scanlineStride + - (x-minX)*pixelStride; - int xoff; - int off = 0; - int xstart; - int ystart; - - 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; - } - - /** - * 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[scanlineStride*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*scanlineStride*h]; - } - int yoff = (y-minY)*scanlineStride + - (x-minX)*pixelStride; - int xoff; - int off = 0; - int xstart; - int ystart; - - // REMIND: Should keep track if dataOffsets are in a nice order - 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 dstOffX = inRaster.getMinX() + x; - int dstOffY = inRaster.getMinY() + y; - 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, 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 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 width, int height, - Raster inRaster) { - // Assume bounds checking has been performed previously - if (width <= 0 || height <= 0) { - return; - } - - int srcOffX = inRaster.getMinX(); - int srcOffY = inRaster.getMinY(); - Object tdata = null; - - if (inRaster instanceof ByteComponentRaster) { - ByteComponentRaster bct = (ByteComponentRaster) inRaster; - byte[] bdata = bct.getDataStorage(); - // REMIND: Do something faster! - if (numDataElements == 1) { - int toff = bct.getDataOffset(0); - int tss = bct.getScanlineStride(); - - int srcOffset = toff; - int dstOffset = dataOffsets[0]+(dstY-minY)*scanlineStride+ - (dstX-minX); - - - if (pixelStride == bct.getPixelStride()) { - width *= pixelStride; - for (int tmpY=0; tmpY < height; tmpY++) { - System.arraycopy(bdata, srcOffset, - data, dstOffset, width); - 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) { - if ((x < this.minX) || (y < this.minY) || - (x + w > this.maxX) || (y + h > this.maxY)) { - throw new ArrayIndexOutOfBoundsException - ("Coordinate out of bounds!"); - } - byte inData[] = (byte[])obj; - int yoff = (y-minY)*scanlineStride + - (x-minX)*pixelStride; - int xoff; - int off = 0; - int xstart; - int ystart; - - if (numDataElements == 1) { - int srcOffset = 0; - int dstOffset = yoff + dataOffsets[0]; - for (ystart=0; ystart < h; ystart++) { - xoff = yoff; - System.arraycopy(inData, srcOffset, - data, dstOffset, w); - - srcOffset += w; - dstOffset += scanlineStride; - } - markDirty(); - return; - } - - 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(); - } - - /** - * 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 (numDataElements == 1) { - yoff += dataOffsets[0]; - if (pixelStride == 1) { - if (scanlineStride == w) { - System.arraycopy(inData, 0, data, yoff, w*h); - } - else { - for (ystart=0; ystart < h; ystart++) { - System.arraycopy(inData, off, data, yoff, w); - off += w; - yoff += scanlineStride; - } - } - } - else { - for (ystart=0; ystart < h; ystart++, yoff += scanlineStride) { - xoff = yoff; - for (xstart=0; xstart < w; xstart++, xoff += pixelStride) { - data[xoff] = 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(); - } - - /** - * 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. - * @param height Height (in pixels) of the subraster. - * @param x0 Translated X origin of the subraster. - * @param y0 Translated Y origin of the subraster. - * @param bandList Array of band indices. - * @exception RasterFormatException - * if the specified bounding box is outside of the parent raster. - */ - public Raster createChild(int x, int y, - int width, int height, - int x0, int y0, int[] bandList) { - WritableRaster newRaster = createWritableChild(x, y, - width, height, - x0, y0, - bandList); - return (Raster) newRaster; - } - - /** - * Creates a Writable 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. - * @param height Height (in pixels) of the subraster. - * @param x0 Translated X origin of the subraster. - * @param y0 Translated Y origin of the subraster. - * @param bandList Array of band indices. - * @exception RasterFormatException - * if the specified bounding box is outside of the parent Raster. - */ - public WritableRaster createWritableChild(int x, int y, - int width, int height, - int x0, int y0, - int[] bandList) { - if (x < this.minX) { - throw new RasterFormatException("x lies outside the raster"); - } - if (y < this.minY) { - throw new RasterFormatException("y lies outside the raster"); - } - if ((x+width < x) || (x+width > this.minX + this.width)) { - throw new RasterFormatException("(x + width) is outside of Raster"); - } - if ((y+height < y) || (y+height > this.minY + this.height)) { - throw new RasterFormatException("(y + height) is outside of Raster"); - } - - SampleModel sm; - - if (bandList != null) - sm = sampleModel.createSubsetSampleModel(bandList); - else - sm = sampleModel; - - int deltaX = x0 - x; - int deltaY = y0 - y; - - return new ByteComponentRaster(sm, - dataBuffer, - new Rectangle(x0, y0, width, height), - new Point(sampleModelTranslateX+deltaX, - sampleModelTranslateY+deltaY), - this); - } - - /** - * Creates a Raster with the same layout but using a different - * width and height, and with new zeroed data arrays. - */ - public WritableRaster createCompatibleWritableRaster(int w, int h) { - if (w <= 0 || h <=0) { - throw new RasterFormatException("negative "+ - ((w <= 0) ? "width" : "height")); - } - - SampleModel sm = sampleModel.createCompatibleSampleModel(w, h); - - return new ByteComponentRaster(sm , new Point(0,0)); - - } - - /** - * Creates a Raster with the same layout and the same - * width and height, and with new zeroed data arrays. If - * the Raster is a subRaster, this will call - * createCompatibleRaster(width, height). - */ - public WritableRaster createCompatibleWritableRaster() { - return createCompatibleWritableRaster(width,height); - } - - /** - * Verify that the layout parameters are consistent with - * the data. If strictCheck - * is false, this method will check for ArrayIndexOutOfBounds conditions. If - * strictCheck is true, this method will check for additional error - * conditions such as line wraparound (width of a line greater than - * the scanline stride). - * @return String Error string, if the layout is incompatible with - * the data. Otherwise returns null. - */ - private void verify (boolean strictCheck) { - // Make sure data for Raster is in a legal range - for (int i=0; i < dataOffsets.length; i++) { - if (dataOffsets[i] < 0) { - throw new RasterFormatException("Data offsets for band "+i+ - "("+dataOffsets[i]+ - ") must be >= 0"); - } - } - - int maxSize = 0; - int size; - - for (int i=0; i < numDataElements; i++) { - size = (height-1)*scanlineStride + (width-1)*pixelStride + - dataOffsets[i]; - if (size > maxSize) { - maxSize = size; - } - } - if (data.length < maxSize) { - throw new RasterFormatException("Data array too small (should be "+ - maxSize+" )"); - } - } - - public String toString() { - return new String ("ByteComponentRaster: width = "+width+" height = " - + height - +" #numDataElements "+numDataElements - // +" xOff = "+xOffset+" yOff = "+yOffset - +" dataOff[0] = "+dataOffsets[0]); - } - -// /** -// * For debugging... prints a region of a one-band ByteComponentRaster -// */ -// public void print(int x, int y, int w, int h) { -// // REMIND: Only works for 1 band! -// System.out.println(this); -// int offset = dataOffsets[0] + y*scanlineStride + x*pixelStride; -// int off; -// for (int yoff=0; yoff < h; yoff++, offset += scanlineStride) { -// off = offset; -// System.out.print("Line "+(y+yoff)+": "); -// for (int xoff = 0; xoff < w; xoff++, off+= pixelStride) { -// String s = Integer.toHexString(data[off]); -// if (s.length() == 8) { -// s = s.substring(6,8); -// } -// System.out.print(s+" "); -// } -// System.out.println(""); -// } -// } - - -} |