| /* | |
| * Copyright (c) 1997, 2021, 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.SinglePixelPackedSampleModel; | |
| import java.awt.image.DataBufferInt; | |
| import java.awt.Rectangle; | |
| import java.awt.Point; | |
| /** | |
| * This class defines a Raster with pixels consisting of one or more 32-bit | |
| * data elements stored in close proximity to each other in a integer array. | |
| * The bit precision per data element is that | |
| * of the data type (that is, the bit precision for this raster is 32). | |
| * There is only one pixel stride and one scanline stride for all | |
| * bands. For a given pixel, all samples fit in N data elements and these | |
| * N data elements hold samples for only one pixel. This type of Raster | |
| * can be used with a PackedColorModel. | |
| * <p> | |
| * For example, if there is only one data element per pixel, a | |
| * SinglePixelPackedSampleModel can be used to represent multiple | |
| * bands with a PackedColorModel (including a DirectColorModel) for | |
| * color interpretation. | |
| * | |
| */ | |
| public class IntegerComponentRaster extends SunWritableRaster { | |
| static final int TYPE_CUSTOM = 0; | |
| static final int TYPE_BYTE_SAMPLES = 1; | |
| static final int TYPE_USHORT_SAMPLES = 2; | |
| static final int TYPE_INT_SAMPLES = 3; | |
| static final int TYPE_BYTE_BANDED_SAMPLES = 4; | |
| static final int TYPE_USHORT_BANDED_SAMPLES = 5; | |
| static final int TYPE_INT_BANDED_SAMPLES = 6; | |
| static final int TYPE_BYTE_PACKED_SAMPLES = 7; | |
| static final int TYPE_USHORT_PACKED_SAMPLES = 8; | |
| static final int TYPE_INT_PACKED_SAMPLES = 9; | |
| static final int TYPE_INT_8BIT_SAMPLES = 10; | |
| static final int TYPE_BYTE_BINARY_SAMPLES = 11; | |
| /** 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 int[] data; | |
| /** The number of data elements required to store a pixel. */ | |
| protected int numDataElems; | |
| 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; | |
| private static native void initIDs(); | |
| static { | |
| /* ensure that the necessary native libraries are loaded */ | |
| NativeLibLoader.loadLibraries(); | |
| initIDs(); | |
| } | |
| /** | |
| * Constructs a IntegerComponentRaster 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. | |
| * @param sampleModel The SampleModel that specifies the layout. | |
| * @param origin The Point that specified the origin. | |
| */ | |
| public IntegerComponentRaster(SampleModel sampleModel, Point origin) { | |
| this(sampleModel, | |
| (DataBufferInt) sampleModel.createDataBuffer(), | |
| new Rectangle(origin.x, | |
| origin.y, | |
| sampleModel.getWidth(), | |
| sampleModel.getHeight()), | |
| origin, | |
| null); | |
| } | |
| /** | |
| * Constructs a IntegerComponentRaster with the given SampleModel | |
| * and DataBuffer. The Raster's upper left corner is origin and | |
| * it is the same sizes the SampleModel. The DataBuffer is not | |
| * initialized and must be a DataBufferInt compatible with SampleModel. | |
| * SampleModel must be of type SinglePixelPackedSampleModel. | |
| * @param sampleModel The SampleModel that specifies the layout. | |
| * @param dataBuffer The DataBufferInt that contains the image data. | |
| * @param origin The Point that specifies the origin. | |
| */ | |
| public IntegerComponentRaster(SampleModel sampleModel, | |
| DataBufferInt dataBuffer, | |
| Point origin) | |
| { | |
| this(sampleModel, | |
| dataBuffer, | |
| new Rectangle(origin.x, | |
| origin.y, | |
| sampleModel.getWidth(), | |
| sampleModel.getHeight()), | |
| origin, | |
| null); | |
| } | |
| /** | |
| * Constructs a IntegerComponentRaster with the given SampleModel, | |
| * DataBuffer, and parent. DataBuffer must be a DataBufferInt and | |
| * SampleModel must be of type SinglePixelPackedSampleModel. | |
| * 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 DataBufferInt 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 IntegerComponentRaster(SampleModel sampleModel, | |
| DataBufferInt dataBuffer, | |
| Rectangle aRegion, | |
| Point origin, | |
| IntegerComponentRaster parent) | |
| { | |
| super(sampleModel,dataBuffer,aRegion,origin,parent); | |
| this.maxX = minX + width; | |
| this.maxY = minY + height; | |
| if (dataBuffer.getNumBanks() != 1) { | |
| throw new | |
| RasterFormatException("DataBuffer for IntegerComponentRasters"+ | |
| " must only have 1 bank."); | |
| } | |
| this.data = stealData(dataBuffer, 0); | |
| if (sampleModel instanceof SinglePixelPackedSampleModel) { | |
| SinglePixelPackedSampleModel sppsm = | |
| (SinglePixelPackedSampleModel)sampleModel; | |
| int[] boffsets = sppsm.getBitOffsets(); | |
| boolean notByteBoundary = false; | |
| for (int i=1; i < boffsets.length; i++) { | |
| if ((boffsets[i]%8) != 0) { | |
| notByteBoundary = true; | |
| } | |
| } | |
| this.type = (notByteBoundary | |
| ? IntegerComponentRaster.TYPE_INT_PACKED_SAMPLES | |
| : IntegerComponentRaster.TYPE_INT_8BIT_SAMPLES); | |
| this.scanlineStride = sppsm.getScanlineStride(); | |
| this.pixelStride = 1; | |
| this.dataOffsets = new int[1]; | |
| this.dataOffsets[0] = dataBuffer.getOffset(); | |
| this.bandOffset = this.dataOffsets[0]; | |
| int xOffset = aRegion.x - origin.x; | |
| int yOffset = aRegion.y - origin.y; | |
| dataOffsets[0] += xOffset+yOffset*scanlineStride; | |
| this.numDataElems = sppsm.getNumDataElements(); | |
| } else { | |
| throw new RasterFormatException("IntegerComponentRasters must have"+ | |
| " SinglePixelPackedSampleModel"); | |
| } | |
| 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 dataOffsets.clone(); | |
| } | |
| /** | |
| * Returns 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. | |
| */ | |
| 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. | |
| */ | |
| 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 int[] 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 obj 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!"); | |
| } | |
| int[] outData; | |
| if (obj == null) { | |
| outData = new int[numDataElements]; | |
| } else { | |
| outData = (int[])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> | |
| * int[] bandData = (int[])raster.getDataElements(x, y, w, h, null); | |
| * int numDataElements = raster.getNumDataElements(); | |
| * int[] pixel = new int[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 w Width of the pixel rectangle. | |
| * @param h Height of the pixel rectangle. | |
| * @param obj 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!"); | |
| } | |
| int[] outData; | |
| if (obj instanceof int[]) { | |
| outData = (int[])obj; | |
| } else { | |
| outData = new int[numDataElements*w*h]; | |
| } | |
| 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; | |
| } | |
| /** | |
| * 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 obj 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!"); | |
| } | |
| int[] inData = (int[])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. | |
| * The transferType of the inputRaster must match this raster. | |
| * An ArrayIndexOutOfBoundsException 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 = x + inRaster.getMinX(); | |
| int dstOffY = y + inRaster.getMinY(); | |
| 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; | |
| } | |
| // Write inRaster (minX, minY) to (dstX, dstY) | |
| int srcOffX = inRaster.getMinX(); | |
| int srcOffY = inRaster.getMinY(); | |
| int[] tdata = null; | |
| if (inRaster instanceof IntegerComponentRaster && | |
| (pixelStride == 1) && (numDataElements == 1)) { | |
| IntegerComponentRaster ict = (IntegerComponentRaster) inRaster; | |
| if (ict.getNumDataElements() != 1) { | |
| throw new ArrayIndexOutOfBoundsException("Number of bands"+ | |
| " does not match"); | |
| } | |
| // Extract the raster parameters | |
| tdata = ict.getDataStorage(); | |
| int tss = ict.getScanlineStride(); | |
| int toff = ict.getDataOffset(0); | |
| int srcOffset = toff; | |
| int dstOffset = dataOffsets[0]+(dstY-minY)*scanlineStride+ | |
| (dstX-minX); | |
| // Fastest case. We can copy scanlines | |
| if (ict.getPixelStride() == pixelStride) { | |
| width *= pixelStride; | |
| // Loop through all of the scanlines and copy the data | |
| for (int startY=0; startY < height; startY++) { | |
| System.arraycopy(tdata, srcOffset, data, dstOffset, width); | |
| srcOffset += tss; | |
| dstOffset += scanlineStride; | |
| } | |
| markDirty(); | |
| return; | |
| } | |
| } | |
| Object odata = null; | |
| for (int startY=0; startY < height; startY++) { | |
| odata = inRaster.getDataElements(srcOffX, srcOffY+startY, | |
| width, 1, odata); | |
| setDataElements(dstX, dstY+startY, | |
| width, 1, odata); | |
| } | |
| } | |
| /** | |
| * 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 obj 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!"); | |
| } | |
| int[] inData = (int[])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++) { | |
| 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. | |
| * @throws 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 raster"); | |
| } | |
| if (y < this.minY) { | |
| throw new RasterFormatException("y lies outside raster"); | |
| } | |
| if ((x+width < x) || (x+width > this.minX + this.width)) { | |
| throw new RasterFormatException("(x + width) is outside raster"); | |
| } | |
| if ((y+height < y) || (y+height > this.minY + this.height)) { | |
| throw new RasterFormatException("(y + height) is outside raster"); | |
| } | |
| SampleModel sm; | |
| if (bandList != null) | |
| sm = sampleModel.createSubsetSampleModel(bandList); | |
| else | |
| sm = sampleModel; | |
| int deltaX = x0 - x; | |
| int deltaY = y0 - y; | |
| return new IntegerComponentRaster(sm, | |
| (DataBufferInt) dataBuffer, | |
| new Rectangle(x0,y0,width,height), | |
| new Point(sampleModelTranslateX+deltaX, | |
| sampleModelTranslateY+deltaY), | |
| this); | |
| } | |
| /** | |
| * 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. 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. | |
| * @throws 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) { | |
| return createWritableChild(x, y, width, height, x0, y0, bandList); | |
| } | |
| /** | |
| * Creates a raster with the same band 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 IntegerComponentRaster(sm, new Point(0,0)); | |
| } | |
| /** | |
| * Creates a raster with the same data 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. | |
| * | |
| * The method verifies whether scanline stride and pixel stride do not | |
| * cause an integer overflow during calculation of a position of the pixel | |
| * in data buffer. It also verifies whether the data buffer has enough data | |
| * to correspond the raster layout attributes. | |
| * | |
| * @throws RasterFormatException if an integer overflow is detected, | |
| * or if data buffer has not enough capacity. | |
| */ | |
| protected final void verify() { | |
| /* Need to re-verify the dimensions since a sample model may be | |
| * specified to the constructor | |
| */ | |
| if (width <= 0 || height <= 0 || | |
| height > (Integer.MAX_VALUE / width)) | |
| { | |
| throw new RasterFormatException("Invalid raster dimension"); | |
| } | |
| if (dataOffsets[0] < 0) { | |
| throw new RasterFormatException("Data offset ("+dataOffsets[0]+ | |
| ") must be >= 0"); | |
| } | |
| if ((long)minX - sampleModelTranslateX < 0 || | |
| (long)minY - sampleModelTranslateY < 0) { | |
| throw new RasterFormatException("Incorrect origin/translate: (" + | |
| minX + ", " + minY + ") / (" + | |
| sampleModelTranslateX + ", " + sampleModelTranslateY + ")"); | |
| } | |
| // we can be sure that width and height are greater than 0 | |
| if (scanlineStride < 0 || | |
| scanlineStride > (Integer.MAX_VALUE / height)) | |
| { | |
| // integer overflow | |
| throw new RasterFormatException("Incorrect scanline stride: " | |
| + scanlineStride); | |
| } | |
| if (height > 1 || minY - sampleModelTranslateY > 0) { | |
| // buffer should contain at least one scanline | |
| if (scanlineStride > data.length) { | |
| throw new RasterFormatException("Incorrect scanline stride: " | |
| + scanlineStride); | |
| } | |
| } | |
| int lastScanOffset = (height - 1) * scanlineStride; | |
| if (pixelStride < 0 || | |
| pixelStride > (Integer.MAX_VALUE / width) || | |
| pixelStride > data.length) | |
| { | |
| // integer overflow | |
| throw new RasterFormatException("Incorrect pixel stride: " | |
| + pixelStride); | |
| } | |
| int lastPixelOffset = (width - 1) * pixelStride; | |
| if (lastPixelOffset > (Integer.MAX_VALUE - lastScanOffset)) { | |
| // integer overflow | |
| throw new RasterFormatException("Incorrect raster attributes"); | |
| } | |
| lastPixelOffset += lastScanOffset; | |
| int index; | |
| int maxIndex = 0; | |
| for (int i = 0; i < numDataElements; i++) { | |
| if (dataOffsets[i] > (Integer.MAX_VALUE - lastPixelOffset)) { | |
| throw new RasterFormatException("Incorrect band offset: " | |
| + dataOffsets[i]); | |
| } | |
| index = lastPixelOffset + dataOffsets[i]; | |
| if (index > maxIndex) { | |
| maxIndex = index; | |
| } | |
| } | |
| if (data.length <= maxIndex) { | |
| throw new RasterFormatException("Data array too small (should be > " | |
| + maxIndex + " )"); | |
| } | |
| } | |
| public String toString() { | |
| return "IntegerComponentRaster: width = " + width | |
| + " height = " + height | |
| + " #Bands = " + numBands | |
| + " #DataElements " + numDataElements | |
| + " xOff = " + sampleModelTranslateX | |
| + " yOff = " + sampleModelTranslateY | |
| + " dataOffset[0] " + dataOffsets[0]; | |
| } | |
| // /** | |
| // * For debugging... prints a region of a one-band IntegerComponentRaster | |
| // */ | |
| // 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 "+(sampleModelTranslateY+y+yoff)+": "); | |
| // for (int xoff = 0; xoff < w; xoff++, off+= pixelStride) { | |
| // System.out.print(Integer.toHexString(data[off])+" "); | |
| // } | |
| // System.out.println(""); | |
| // } | |
| // } | |
| } |