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| 1 | +/* | |
| 2 | + * Copyright (c) 1997, 2007, Oracle and/or its affiliates. All rights reserved. | |
| 3 | + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 | + * | |
| 5 | + * This code is free software; you can redistribute it and/or modify it | |
| 6 | + * under the terms of the GNU General Public License version 2 only, as | |
| 7 | + * published by the Free Software Foundation. Oracle designates this | |
| 8 | + * particular file as subject to the "Classpath" exception as provided | |
| 9 | + * by Oracle in the LICENSE file that accompanied this code. | |
| 10 | + * | |
| 11 | + * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 12 | + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 13 | + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 14 | + * version 2 for more details (a copy is included in the LICENSE file that | |
| 15 | + * accompanied this code). | |
| 16 | + * | |
| 17 | + * You should have received a copy of the GNU General Public License version | |
| 18 | + * 2 along with this work; if not, write to the Free Software Foundation, | |
| 19 | + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 20 | + * | |
| 21 | + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 22 | + * or visit www.oracle.com if you need additional information or have any | |
| 23 | + * questions. | |
| 24 | + */ | |
| 25 | + | |
| 26 | +package sun.awt.image; | |
| 27 | +import java.awt.image.Raster; | |
| 28 | +import java.awt.image.WritableRaster; | |
| 29 | +import java.awt.image.RasterFormatException; | |
| 30 | +import java.awt.image.SampleModel; | |
| 31 | +import java.awt.image.BandedSampleModel; | |
| 32 | +import java.awt.image.DataBuffer; | |
| 33 | +import java.awt.image.DataBufferByte; | |
| 34 | +import java.awt.Rectangle; | |
| 35 | +import java.awt.Point; | |
| 36 | + | |
| 37 | +/** | |
| 38 | + * This class defines a Raster with pixels consisting of multiple | |
| 39 | + * 8-bit samples stored in possibly separate arrays for each band. | |
| 40 | + * Operations on sets of pixels are performed on a given band in the | |
| 41 | + * Raster before moving on to the next band. The arrays used for | |
| 42 | + * storage may be distinct or shared between some or all of the bands. | |
| 43 | + * Each band additionally has an offset that is added to determine the | |
| 44 | + * DataBuffer location of each pixel. | |
| 45 | + * | |
| 46 | + * There is only one scanline stride for all bands. The pixel stride | |
| 47 | + * is always equal to one. This type of raster can be used with a | |
| 48 | + * ComponentColorModel. This class requires a BandedSampleModel. | |
| 49 | + * | |
| 50 | + */ | |
| 51 | +public class ByteBandedRaster extends SunWritableRaster { | |
| 52 | + | |
| 53 | + /** Data offsets for each band of image data. */ | |
| 54 | + int[] dataOffsets; | |
| 55 | + | |
| 56 | + /** Scanline stride of the image data contained in this Raster. */ | |
| 57 | + int scanlineStride; | |
| 58 | + | |
| 59 | + /** The image data array. */ | |
| 60 | + byte[][] data; | |
| 61 | + | |
| 62 | + /** A cached copy of minX + width for use in bounds checks. */ | |
| 63 | + private int maxX; | |
| 64 | + | |
| 65 | + /** A cached copy of minY + height for use in bounds checks. */ | |
| 66 | + private int maxY; | |
| 67 | + | |
| 68 | + /** | |
| 69 | + * Constructs a ByteBandedRaster with the given sampleModel. The | |
| 70 | + * Raster's upper left corner is origin and it is the same | |
| 71 | + * size as the SampleModel. A dataBuffer large | |
| 72 | + * enough to describe the Raster is automatically created. SampleModel | |
| 73 | + * must be of type BandedSampleModel. | |
| 74 | + * @param sampleModel The SampleModel that specifies the layout. | |
| 75 | + * @param origin The Point that specifies the origin. | |
| 76 | + */ | |
| 77 | + public ByteBandedRaster(SampleModel sampleModel, | |
| 78 | + Point origin) { | |
| 79 | + this(sampleModel, | |
| 80 | + sampleModel.createDataBuffer(), | |
| 81 | + new Rectangle(origin.x, | |
| 82 | + origin.y, | |
| 83 | + sampleModel.getWidth(), | |
| 84 | + sampleModel.getHeight()), | |
| 85 | + origin, | |
| 86 | + null); | |
| 87 | + } | |
| 88 | + | |
| 89 | + /** | |
| 90 | + * Constructs a ByteBanded Raster with the given sampleModel | |
| 91 | + * and DataBuffer. The Raster's upper left corner is origin and | |
| 92 | + * it is the same size as the SampleModel. The DataBuffer is not | |
| 93 | + * initialized and must be a DataBufferShort compatible with SampleModel. | |
| 94 | + * SampleModel must be of type BandedSampleModel. | |
| 95 | + * @param sampleModel The SampleModel that specifies the layout. | |
| 96 | + * @param dataBuffer The DataBufferShort that contains the image data. | |
| 97 | + * @param origin The Point that specifies the origin. | |
| 98 | + */ | |
| 99 | + public ByteBandedRaster(SampleModel sampleModel, | |
| 100 | + DataBuffer dataBuffer, | |
| 101 | + Point origin) { | |
| 102 | + this(sampleModel, dataBuffer, | |
| 103 | + new Rectangle(origin.x , origin.y, | |
| 104 | + sampleModel.getWidth(), | |
| 105 | + sampleModel.getHeight()), | |
| 106 | + origin, null); | |
| 107 | + } | |
| 108 | + | |
| 109 | + /** | |
| 110 | + * Constructs a ByteBandedRaster with the given sampleModel, | |
| 111 | + * DataBuffer, and parent. DataBuffer must be a DataBufferShort and | |
| 112 | + * SampleModel must be of type BandedSampleModel. | |
| 113 | + * When translated into the base Raster's | |
| 114 | + * coordinate system, aRegion must be contained by the base Raster. | |
| 115 | + * Origin is the coordinate in the new Raster's coordinate system of | |
| 116 | + * the origin of the base Raster. (The base Raster is the Raster's | |
| 117 | + * ancestor which has no parent.) | |
| 118 | + * | |
| 119 | + * Note that this constructor should generally be called by other | |
| 120 | + * constructors or create methods, it should not be used directly. | |
| 121 | + * @param sampleModel The SampleModel that specifies the layout. | |
| 122 | + * @param dataBuffer The DataBufferShort that contains the image data. | |
| 123 | + * @param aRegion The Rectangle that specifies the image area. | |
| 124 | + * @param origin The Point that specifies the origin. | |
| 125 | + * @param parent The parent (if any) of this raster. | |
| 126 | + */ | |
| 127 | + public ByteBandedRaster(SampleModel sampleModel, | |
| 128 | + DataBuffer dataBuffer, | |
| 129 | + Rectangle aRegion, | |
| 130 | + Point origin, | |
| 131 | + ByteBandedRaster parent) { | |
| 132 | + | |
| 133 | + super(sampleModel, dataBuffer, aRegion, origin, parent); | |
| 134 | + this.maxX = minX + width; | |
| 135 | + this.maxY = minY + height; | |
| 136 | + | |
| 137 | + if (!(dataBuffer instanceof DataBufferByte)) { | |
| 138 | + throw new RasterFormatException("ByteBandedRaster must have" + | |
| 139 | + "byte DataBuffers"); | |
| 140 | + } | |
| 141 | + DataBufferByte dbb = (DataBufferByte)dataBuffer; | |
| 142 | + | |
| 143 | + if (sampleModel instanceof BandedSampleModel) { | |
| 144 | + BandedSampleModel bsm = (BandedSampleModel)sampleModel; | |
| 145 | + this.scanlineStride = bsm.getScanlineStride(); | |
| 146 | + int bankIndices[] = bsm.getBankIndices(); | |
| 147 | + int bandOffsets[] = bsm.getBandOffsets(); | |
| 148 | + int dOffsets[] = dbb.getOffsets(); | |
| 149 | + dataOffsets = new int[bankIndices.length]; | |
| 150 | + data = new byte[bankIndices.length][]; | |
| 151 | + int xOffset = aRegion.x - origin.x; | |
| 152 | + int yOffset = aRegion.y - origin.y; | |
| 153 | + for (int i = 0; i < bankIndices.length; i++) { | |
| 154 | + data[i] = stealData(dbb, bankIndices[i]); | |
| 155 | + dataOffsets[i] = dOffsets[bankIndices[i]] + | |
| 156 | + xOffset + yOffset*scanlineStride + bandOffsets[i]; | |
| 157 | + } | |
| 158 | + } else { | |
| 159 | + throw new RasterFormatException("ByteBandedRasters must have"+ | |
| 160 | + "BandedSampleModels"); | |
| 161 | + } | |
| 162 | + verify(false); | |
| 163 | + } | |
| 164 | + | |
| 165 | + | |
| 166 | + /** | |
| 167 | + * Returns a copy of the data offsets array. For each band the data | |
| 168 | + * offset is the index into the band's data array, of the first sample | |
| 169 | + * of the band. | |
| 170 | + */ | |
| 171 | + public int[] getDataOffsets() { | |
| 172 | + return (int[])dataOffsets.clone(); | |
| 173 | + } | |
| 174 | + | |
| 175 | + /** | |
| 176 | + * Returns data offset for the specified band. The data offset | |
| 177 | + * is the index into the band's data array | |
| 178 | + * in which the first sample of the first scanline is stored. | |
| 179 | + * @param The band whose offset is returned. | |
| 180 | + */ | |
| 181 | + public int getDataOffset(int band) { | |
| 182 | + return dataOffsets[band]; | |
| 183 | + } | |
| 184 | + | |
| 185 | + /** | |
| 186 | + * Returns the scanline stride -- the number of data array elements | |
| 187 | + * between a given sample and the sample in the same column | |
| 188 | + * of the next row in the same band. | |
| 189 | + */ | |
| 190 | + public int getScanlineStride() { | |
| 191 | + return scanlineStride; | |
| 192 | + } | |
| 193 | + | |
| 194 | + /** | |
| 195 | + * Returns the pixel stride, which is always equal to one for | |
| 196 | + * a Raster with a BandedSampleModel. | |
| 197 | + */ | |
| 198 | + public int getPixelStride() { | |
| 199 | + return 1; | |
| 200 | + } | |
| 201 | + | |
| 202 | + /** | |
| 203 | + * Returns a reference to the entire data array. | |
| 204 | + */ | |
| 205 | + public byte[][] getDataStorage() { | |
| 206 | + return data; | |
| 207 | + } | |
| 208 | + | |
| 209 | + /** | |
| 210 | + * Returns a reference to the specific band data array. | |
| 211 | + */ | |
| 212 | + public byte[] getDataStorage(int band) { | |
| 213 | + return data[band]; | |
| 214 | + } | |
| 215 | + | |
| 216 | + /** | |
| 217 | + * Returns the data elements for all bands at the specified | |
| 218 | + * location. | |
| 219 | + * An ArrayIndexOutOfBounds exception will be thrown at runtime | |
| 220 | + * if the pixel coordinate is out of bounds. | |
| 221 | + * A ClassCastException will be thrown if the input object is non null | |
| 222 | + * and references anything other than an array of transferType. | |
| 223 | + * @param x The X coordinate of the pixel location. | |
| 224 | + * @param y The Y coordinate of the pixel location. | |
| 225 | + * @param outData An object reference to an array of type defined by | |
| 226 | + * getTransferType() and length getNumDataElements(). | |
| 227 | + * If null an array of appropriate type and size will be | |
| 228 | + * allocated. | |
| 229 | + * @return An object reference to an array of type defined by | |
| 230 | + * getTransferType() with the request pixel data. | |
| 231 | + */ | |
| 232 | + public Object getDataElements(int x, int y, Object obj) { | |
| 233 | + if ((x < this.minX) || (y < this.minY) || | |
| 234 | + (x >= this.maxX) || (y >= this.maxY)) { | |
| 235 | + throw new ArrayIndexOutOfBoundsException | |
| 236 | + ("Coordinate out of bounds!"); | |
| 237 | + } | |
| 238 | + byte outData[]; | |
| 239 | + if (obj == null) { | |
| 240 | + outData = new byte[numDataElements]; | |
| 241 | + } else { | |
| 242 | + outData = (byte[])obj; | |
| 243 | + } | |
| 244 | + int off = (y-minY)*scanlineStride + (x-minX); | |
| 245 | + | |
| 246 | + for (int band = 0; band < numDataElements; band++) { | |
| 247 | + outData[band] = data[band][dataOffsets[band] + off]; | |
| 248 | + } | |
| 249 | + | |
| 250 | + return outData; | |
| 251 | + } | |
| 252 | + | |
| 253 | + /** | |
| 254 | + * Returns an array of data elements from the specified | |
| 255 | + * rectangular region. | |
| 256 | + * An ArrayIndexOutOfBounds exception will be thrown at runtime | |
| 257 | + * if the pixel coordinates are out of bounds. | |
| 258 | + * A ClassCastException will be thrown if the input object is non null | |
| 259 | + * and references anything other than an array of transferType. | |
| 260 | + * <pre> | |
| 261 | + * byte[] bandData = (byte[])raster.getDataElement(x, y, w, h, null); | |
| 262 | + * int numDataElements = raster.getNumDataElements(); | |
| 263 | + * byte[] pixel = new byte[numDataElements]; | |
| 264 | + * // To find a data element at location (x2, y2) | |
| 265 | + * System.arraycopy(bandData, ((y2-y)*w + (x2-x))*numDataElements, | |
| 266 | + * pixel, 0, numDataElements); | |
| 267 | + * </pre> | |
| 268 | + * @param x The X coordinate of the upper left pixel location. | |
| 269 | + * @param y The Y coordinate of the upper left pixel location. | |
| 270 | + * @param width Width of the pixel rectangle. | |
| 271 | + * @param height Height of the pixel rectangle. | |
| 272 | + * @param outData An object reference to an array of type defined by | |
| 273 | + * getTransferType() and length w*h*getNumDataElements(). | |
| 274 | + * If null an array of appropriate type and size will be | |
| 275 | + * allocated. | |
| 276 | + * @return An object reference to an array of type defined by | |
| 277 | + * getTransferType() with the request pixel data. | |
| 278 | + */ | |
| 279 | + public Object getDataElements(int x, int y, int w, int h, Object obj) { | |
| 280 | + if ((x < this.minX) || (y < this.minY) || | |
| 281 | + (x + w > this.maxX) || (y + h > this.maxY)) { | |
| 282 | + throw new ArrayIndexOutOfBoundsException | |
| 283 | + ("Coordinate out of bounds!"); | |
| 284 | + } | |
| 285 | + byte outData[]; | |
| 286 | + if (obj == null) { | |
| 287 | + outData = new byte[numDataElements*w*h]; | |
| 288 | + } else { | |
| 289 | + outData = (byte[])obj; | |
| 290 | + } | |
| 291 | + int yoff = (y-minY)*scanlineStride + (x-minX); | |
| 292 | + | |
| 293 | + for (int c = 0; c < numDataElements; c++) { | |
| 294 | + int off = c; | |
| 295 | + byte[] bank = data[c]; | |
| 296 | + int dataOffset = dataOffsets[c]; | |
| 297 | + | |
| 298 | + int yoff2 = yoff; | |
| 299 | + for (int ystart=0; ystart < h; ystart++, yoff2 += scanlineStride) { | |
| 300 | + int xoff = dataOffset + yoff2; | |
| 301 | + for (int xstart=0; xstart < w; xstart++) { | |
| 302 | + outData[off] = bank[xoff++]; | |
| 303 | + off += numDataElements; | |
| 304 | + } | |
| 305 | + } | |
| 306 | + } | |
| 307 | + | |
| 308 | + return outData; | |
| 309 | + } | |
| 310 | + | |
| 311 | + /** | |
| 312 | + * Returns a byte array of data elements from the specified rectangular | |
| 313 | + * region for the specified band. | |
| 314 | + * An ArrayIndexOutOfBounds exception will be thrown at runtime | |
| 315 | + * if the pixel coordinates are out of bounds. | |
| 316 | + * <pre> | |
| 317 | + * byte[] bandData = raster.getByteData(x, y, w, h, null); | |
| 318 | + * // To find the data element at location (x2, y2) | |
| 319 | + * byte bandElement = bandData[((y2-y)*w + (x2-x))]; | |
| 320 | + * </pre> | |
| 321 | + * @param x The X coordinate of the upper left pixel location. | |
| 322 | + * @param y The Y coordinate of the upper left pixel location. | |
| 323 | + * @param width Width of the pixel rectangle. | |
| 324 | + * @param height Height of the pixel rectangle. | |
| 325 | + * @param band The band to return. | |
| 326 | + * @param outData If non-null, data elements for all bands | |
| 327 | + * at the specified location are returned in this array. | |
| 328 | + * @return Data array with data elements for all bands. | |
| 329 | + */ | |
| 330 | + public byte[] getByteData(int x, int y, int w, int h, | |
| 331 | + int band, byte[] outData) { | |
| 332 | + // Bounds check for 'band' will be performed automatically | |
| 333 | + if ((x < this.minX) || (y < this.minY) || | |
| 334 | + (x + w > this.maxX) || (y + h > this.maxY)) { | |
| 335 | + throw new ArrayIndexOutOfBoundsException | |
| 336 | + ("Coordinate out of bounds!"); | |
| 337 | + } | |
| 338 | + if (outData == null) { | |
| 339 | + outData = new byte[scanlineStride*h]; | |
| 340 | + } | |
| 341 | + int yoff = (y-minY)*scanlineStride + (x-minX) + dataOffsets[band]; | |
| 342 | + | |
| 343 | + if (scanlineStride == w) { | |
| 344 | + System.arraycopy(data[band], yoff, outData, 0, w*h); | |
| 345 | + } else { | |
| 346 | + int off = 0; | |
| 347 | + for (int ystart=0; ystart < h; ystart++, yoff += scanlineStride) { | |
| 348 | + System.arraycopy(data[band], yoff, outData, off, w); | |
| 349 | + off += w; | |
| 350 | + } | |
| 351 | + } | |
| 352 | + | |
| 353 | + return outData; | |
| 354 | + } | |
| 355 | + | |
| 356 | + /** | |
| 357 | + * Returns a byte array of data elements from the specified rectangular | |
| 358 | + * region. | |
| 359 | + * An ArrayIndexOutOfBounds exception will be thrown at runtime | |
| 360 | + * if the pixel coordinates are out of bounds. | |
| 361 | + * <pre> | |
| 362 | + * byte[] bandData = raster.getByteData(x, y, w, h, null); | |
| 363 | + * int numDataElements = raster.getNumDataElements(); | |
| 364 | + * byte[] pixel = new byte[numDataElements]; | |
| 365 | + * // To find a data element at location (x2, y2) | |
| 366 | + * System.arraycopy(bandData, ((y2-y)*w + (x2-x))*numDataElements, | |
| 367 | + * pixel, 0, numDataElements); | |
| 368 | + * </pre> | |
| 369 | + * @param x The X coordinate of the upper left pixel location. | |
| 370 | + * @param y The Y coordinate of the upper left pixel location. | |
| 371 | + * @param width Width of the pixel rectangle. | |
| 372 | + * @param height Height of the pixel rectangle. | |
| 373 | + * @param outData If non-null, data elements for all bands | |
| 374 | + * at the specified location are returned in this array. | |
| 375 | + * @return Data array with data elements for all bands. | |
| 376 | + */ | |
| 377 | + public byte[] getByteData(int x, int y, int w, int h, byte[] outData) { | |
| 378 | + if ((x < this.minX) || (y < this.minY) || | |
| 379 | + (x + w > this.maxX) || (y + h > this.maxY)) { | |
| 380 | + throw new ArrayIndexOutOfBoundsException | |
| 381 | + ("Coordinate out of bounds!"); | |
| 382 | + } | |
| 383 | + if (outData == null) { | |
| 384 | + outData = new byte[numDataElements*scanlineStride*h]; | |
| 385 | + } | |
| 386 | + int yoff = (y-minY)*scanlineStride + (x-minX); | |
| 387 | + | |
| 388 | + for (int c = 0; c < numDataElements; c++) { | |
| 389 | + int off = c; | |
| 390 | + byte[] bank = data[c]; | |
| 391 | + int dataOffset = dataOffsets[c]; | |
| 392 | + | |
| 393 | + // REMIND: Should keep track if dataoffsets are in a nice order | |
| 394 | + int yoff2 = yoff; | |
| 395 | + for (int ystart=0; ystart < h; ystart++, yoff2 += scanlineStride) { | |
| 396 | + int xoff = dataOffset + yoff2; | |
| 397 | + for (int xstart=0; xstart < w; xstart++) { | |
| 398 | + outData[off] = bank[xoff++]; | |
| 399 | + off += numDataElements; | |
| 400 | + } | |
| 401 | + } | |
| 402 | + } | |
| 403 | + | |
| 404 | + return outData; | |
| 405 | + } | |
| 406 | + | |
| 407 | + /** | |
| 408 | + * Stores the data elements for all bands at the specified location. | |
| 409 | + * An ArrayIndexOutOfBounds exception will be thrown at runtime | |
| 410 | + * if the pixel coordinate is out of bounds. | |
| 411 | + * A ClassCastException will be thrown if the input object is non null | |
| 412 | + * and references anything other than an array of transferType. | |
| 413 | + * @param x The X coordinate of the pixel location. | |
| 414 | + * @param y The Y coordinate of the pixel location. | |
| 415 | + * @param inData An object reference to an array of type defined by | |
| 416 | + * getTransferType() and length getNumDataElements() | |
| 417 | + * containing the pixel data to place at x,y. | |
| 418 | + */ | |
| 419 | + public void setDataElements(int x, int y, Object obj) { | |
| 420 | + if ((x < this.minX) || (y < this.minY) || | |
| 421 | + (x >= this.maxX) || (y >= this.maxY)) { | |
| 422 | + throw new ArrayIndexOutOfBoundsException | |
| 423 | + ("Coordinate out of bounds!"); | |
| 424 | + } | |
| 425 | + byte inData[] = (byte[])obj; | |
| 426 | + int off = (y-minY)*scanlineStride + (x-minX); | |
| 427 | + for (int i = 0; i < numDataElements; i++) { | |
| 428 | + data[i][dataOffsets[i] + off] = inData[i]; | |
| 429 | + } | |
| 430 | + markDirty(); | |
| 431 | + } | |
| 432 | + | |
| 433 | + /** | |
| 434 | + * Stores the Raster data at the specified location. | |
| 435 | + * An ArrayIndexOutOfBounds exception will be thrown at runtime | |
| 436 | + * if the pixel coordinate is out of bounds. | |
| 437 | + * @param x The X coordinate of the pixel location. | |
| 438 | + * @param y The Y coordinate of the pixel location. | |
| 439 | + * @param inRaster Raster of data to place at x,y location. | |
| 440 | + */ | |
| 441 | + public void setDataElements(int x, int y, Raster inRaster) { | |
| 442 | + int dstOffX = inRaster.getMinX() + x; | |
| 443 | + int dstOffY = inRaster.getMinY() + y; | |
| 444 | + int width = inRaster.getWidth(); | |
| 445 | + int height = inRaster.getHeight(); | |
| 446 | + if ((dstOffX < this.minX) || (dstOffY < this.minY) || | |
| 447 | + (dstOffX + width > this.maxX) || (dstOffY + height > this.maxY)) { | |
| 448 | + throw new ArrayIndexOutOfBoundsException | |
| 449 | + ("Coordinate out of bounds!"); | |
| 450 | + } | |
| 451 | + | |
| 452 | + setDataElements(dstOffX, dstOffY, width, height, inRaster); | |
| 453 | + } | |
| 454 | + | |
| 455 | + /** | |
| 456 | + * Stores the Raster data at the specified location. | |
| 457 | + * @param dstX The absolute X coordinate of the destination pixel | |
| 458 | + * that will receive a copy of the upper-left pixel of the | |
| 459 | + * inRaster | |
| 460 | + * @param dstY The absolute Y coordinate of the destination pixel | |
| 461 | + * that will receive a copy of the upper-left pixel of the | |
| 462 | + * inRaster | |
| 463 | + * @param width The number of pixels to store horizontally | |
| 464 | + * @param height The number of pixels to store vertically | |
| 465 | + * @param inRaster Raster of data to place at x,y location. | |
| 466 | + */ | |
| 467 | + private void setDataElements(int dstX, int dstY, | |
| 468 | + int width, int height, | |
| 469 | + Raster inRaster) { | |
| 470 | + // Assume bounds checking has been performed previously | |
| 471 | + if (width <= 0 || height <= 0) { | |
| 472 | + return; | |
| 473 | + } | |
| 474 | + | |
| 475 | + int srcOffX = inRaster.getMinX(); | |
| 476 | + int srcOffY = inRaster.getMinY(); | |
| 477 | + Object tdata = null; | |
| 478 | + | |
| 479 | +// // REMIND: Do something faster! | |
| 480 | +// if (inRaster instanceof ByteBandedRaster) { | |
| 481 | +// } | |
| 482 | + | |
| 483 | + for (int startY=0; startY < height; startY++) { | |
| 484 | + // Grab one scanline at a time | |
| 485 | + tdata = inRaster.getDataElements(srcOffX, srcOffY+startY, | |
| 486 | + width, 1, tdata); | |
| 487 | + setDataElements(dstX, dstY+startY, width, 1, tdata); | |
| 488 | + } | |
| 489 | + } | |
| 490 | + | |
| 491 | + /** | |
| 492 | + * Stores an array of data elements into the specified rectangular | |
| 493 | + * region. | |
| 494 | + * An ArrayIndexOutOfBounds exception will be thrown at runtime | |
| 495 | + * if the pixel coordinates are out of bounds. | |
| 496 | + * A ClassCastException will be thrown if the input object is non null | |
| 497 | + * and references anything other than an array of transferType. | |
| 498 | + * The data elements in the | |
| 499 | + * data array are assumed to be packed. That is, a data element | |
| 500 | + * for the nth band at location (x2, y2) would be found at: | |
| 501 | + * <pre> | |
| 502 | + * inData[((y2-y)*w + (x2-x))*numDataElements + n] | |
| 503 | + * </pre> | |
| 504 | + * @param x The X coordinate of the upper left pixel location. | |
| 505 | + * @param y The Y coordinate of the upper left pixel location. | |
| 506 | + * @param w Width of the pixel rectangle. | |
| 507 | + * @param h Height of the pixel rectangle. | |
| 508 | + * @param inData An object reference to an array of type defined by | |
| 509 | + * getTransferType() and length w*h*getNumDataElements() | |
| 510 | + * containing the pixel data to place between x,y and | |
| 511 | + * x+h, y+h. | |
| 512 | + */ | |
| 513 | + public void setDataElements(int x, int y, int w, int h, Object obj) { | |
| 514 | + if ((x < this.minX) || (y < this.minY) || | |
| 515 | + (x + w > this.maxX) || (y + h > this.maxY)) { | |
| 516 | + throw new ArrayIndexOutOfBoundsException | |
| 517 | + ("Coordinate out of bounds!"); | |
| 518 | + } | |
| 519 | + byte inData[] = (byte[])obj; | |
| 520 | + int yoff = (y-minY)*scanlineStride + (x-minX); | |
| 521 | + | |
| 522 | + for (int c = 0; c < numDataElements; c++) { | |
| 523 | + int off = c; | |
| 524 | + byte[] bank = data[c]; | |
| 525 | + int dataOffset = dataOffsets[c]; | |
| 526 | + | |
| 527 | + int yoff2 = yoff; | |
| 528 | + for (int ystart=0; ystart < h; ystart++, yoff2 += scanlineStride) { | |
| 529 | + int xoff = dataOffset + yoff2; | |
| 530 | + for (int xstart=0; xstart < w; xstart++) { | |
| 531 | + bank[xoff++] = inData[off]; | |
| 532 | + off += numDataElements; | |
| 533 | + } | |
| 534 | + } | |
| 535 | + } | |
| 536 | + | |
| 537 | + markDirty(); | |
| 538 | + } | |
| 539 | + | |
| 540 | + /** | |
| 541 | + * Stores a byte array of data elements into the specified rectangular | |
| 542 | + * region. | |
| 543 | + * An ArrayIndexOutOfBounds exception will be thrown at runtime | |
| 544 | + * if the pixel coordinates are out of bounds. | |
| 545 | + * The data elements in the | |
| 546 | + * data array are assumed to be packed. That is, a data element | |
| 547 | + * for the nth band at location (x2, y2) would be found at: | |
| 548 | + * <pre> | |
| 549 | + * inData[((y2-y)*w + (x2-x))*numDataElements + n] | |
| 550 | + * </pre> | |
| 551 | + * @param x The X coordinate of the upper left pixel location. | |
| 552 | + * @param y The Y coordinate of the upper left pixel location. | |
| 553 | + * @param w Width of the pixel rectangle. | |
| 554 | + * @param h Height of the pixel rectangle. | |
| 555 | + * @param band The band to set. | |
| 556 | + * @param inData The data elements to be stored. | |
| 557 | + */ | |
| 558 | + public void putByteData(int x, int y, int w, int h, | |
| 559 | + int band, byte[] inData) { | |
| 560 | + // Bounds check for 'band' will be performed automatically | |
| 561 | + if ((x < this.minX) || (y < this.minY) || | |
| 562 | + (x + w > this.maxX) || (y + h > this.maxY)) { | |
| 563 | + throw new ArrayIndexOutOfBoundsException | |
| 564 | + ("Coordinate out of bounds!"); | |
| 565 | + } | |
| 566 | + int yoff = (y-minY)*scanlineStride + (x-minX) + dataOffsets[band]; | |
| 567 | + int xoff; | |
| 568 | + int off = 0; | |
| 569 | + int xstart; | |
| 570 | + int ystart; | |
| 571 | + | |
| 572 | + if (scanlineStride == w) { | |
| 573 | + System.arraycopy(inData, 0, data[band], yoff, w*h); | |
| 574 | + } else { | |
| 575 | + for (ystart=0; ystart < h; ystart++, yoff += scanlineStride) { | |
| 576 | + System.arraycopy(inData, off, data[band], yoff, w); | |
| 577 | + off += w; | |
| 578 | + } | |
| 579 | + } | |
| 580 | + | |
| 581 | + markDirty(); | |
| 582 | + } | |
| 583 | + | |
| 584 | + /** | |
| 585 | + * Stores a byte array of data elements into the specified rectangular | |
| 586 | + * region. | |
| 587 | + * An ArrayIndexOutOfBounds exception will be thrown at runtime | |
| 588 | + * if the pixel coordinates are out of bounds. | |
| 589 | + * The data elements in the | |
| 590 | + * data array are assumed to be packed. That is, a data element | |
| 591 | + * for the nth band at location (x2, y2) would be found at: | |
| 592 | + * <pre> | |
| 593 | + * inData[((y2-y)*w + (x2-x))*numDataElements + n] | |
| 594 | + * </pre> | |
| 595 | + * @param x The X coordinate of the upper left pixel location. | |
| 596 | + * @param y The Y coordinate of the upper left pixel location. | |
| 597 | + * @param w Width of the pixel rectangle. | |
| 598 | + * @param h Height of the pixel rectangle. | |
| 599 | + * @param inData The data elements to be stored. | |
| 600 | + */ | |
| 601 | + public void putByteData(int x, int y, int w, int h, byte[] inData) { | |
| 602 | + if ((x < this.minX) || (y < this.minY) || | |
| 603 | + (x + w > this.maxX) || (y + h > this.maxY)) { | |
| 604 | + throw new ArrayIndexOutOfBoundsException | |
| 605 | + ("Coordinate out of bounds!"); | |
| 606 | + } | |
| 607 | + int yoff = (y-minY)*scanlineStride + (x-minX); | |
| 608 | + | |
| 609 | + for (int c = 0; c < numDataElements; c++) { | |
| 610 | + int off = c; | |
| 611 | + byte[] bank = data[c]; | |
| 612 | + int dataOffset = dataOffsets[c]; | |
| 613 | + | |
| 614 | + int yoff2 = yoff; | |
| 615 | + for (int ystart=0; ystart < h; ystart++, yoff2 += scanlineStride) { | |
| 616 | + int xoff = dataOffset + yoff2; | |
| 617 | + for (int xstart=0; xstart < w; xstart++) { | |
| 618 | + bank[xoff++] = inData[off]; | |
| 619 | + off += numDataElements; | |
| 620 | + } | |
| 621 | + } | |
| 622 | + } | |
| 623 | + | |
| 624 | + markDirty(); | |
| 625 | + } | |
| 626 | + | |
| 627 | + /** | |
| 628 | + * Creates a Writable subraster given a region of the raster. The x and y | |
| 629 | + * coordinates specify the horizontal and vertical offsets | |
| 630 | + * from the upper-left corner of this raster to the upper-left corner | |
| 631 | + * of the subraster. A subset of the bands of the parent Raster may | |
| 632 | + * be specified. If this is null, then all the bands are present in the | |
| 633 | + * subRaster. A translation to the subRaster may also be specified. | |
| 634 | + * Note that the subraster will reference the same | |
| 635 | + * DataBuffers as the parent raster, but using different offsets. | |
| 636 | + * @param x X offset. | |
| 637 | + * @param y Y offset. | |
| 638 | + * @param width Width of the subraster. | |
| 639 | + * @param height Height of the subraster. | |
| 640 | + * @param x0 Translated X origin of the subraster. | |
| 641 | + * @param y0 Translated Y origin of the subraster. | |
| 642 | + * @param bandList Array of band indices. | |
| 643 | + * @exception RasterFormatException | |
| 644 | + * if the specified bounding box is outside of the parent raster. | |
| 645 | + */ | |
| 646 | + public WritableRaster createWritableChild (int x, int y, | |
| 647 | + int width, int height, | |
| 648 | + int x0, int y0, | |
| 649 | + int bandList[]) { | |
| 650 | + | |
| 651 | + if (x < this.minX) { | |
| 652 | + throw new RasterFormatException("x lies outside raster"); | |
| 653 | + } | |
| 654 | + if (y < this.minY) { | |
| 655 | + throw new RasterFormatException("y lies outside raster"); | |
| 656 | + } | |
| 657 | + if ((x+width < x) || (x+width > this.width + this.minX)) { | |
| 658 | + throw new RasterFormatException("(x + width) is outside raster") ; | |
| 659 | + } | |
| 660 | + if ((y+height < y) || (y+height > this.height + this.minY)) { | |
| 661 | + throw new RasterFormatException("(y + height) is outside raster"); | |
| 662 | + } | |
| 663 | + | |
| 664 | + SampleModel sm; | |
| 665 | + | |
| 666 | + if (bandList != null) | |
| 667 | + sm = sampleModel.createSubsetSampleModel(bandList); | |
| 668 | + else | |
| 669 | + sm = sampleModel; | |
| 670 | + | |
| 671 | + int deltaX = x0 - x; | |
| 672 | + int deltaY = y0 - y; | |
| 673 | + | |
| 674 | + return new ByteBandedRaster(sm, | |
| 675 | + dataBuffer, | |
| 676 | + new Rectangle(x0,y0,width,height), | |
| 677 | + new Point(sampleModelTranslateX+deltaX, | |
| 678 | + sampleModelTranslateY+deltaY), | |
| 679 | + this); | |
| 680 | + } | |
| 681 | + | |
| 682 | + /** | |
| 683 | + * Creates a subraster given a region of the raster. The x and y | |
| 684 | + * coordinates specify the horizontal and vertical offsets | |
| 685 | + * from the upper-left corner of this raster to the upper-left corner | |
| 686 | + * of the subraster. A subset of the bands of the parent Raster may | |
| 687 | + * be specified. If this is null, then all the bands are present in the | |
| 688 | + * subRaster. A translation to the subRaster may also be specified. | |
| 689 | + * Note that the subraster will reference the same | |
| 690 | + * DataBuffers as the parent raster, but using different offsets. | |
| 691 | + * @param x X offset. | |
| 692 | + * @param y Y offset. | |
| 693 | + * @param width Width (in pixels) of the subraster. | |
| 694 | + * @param height Height (in pixels) of the subraster. | |
| 695 | + * @param x0 Translated X origin of the subraster. | |
| 696 | + * @param y0 Translated Y origin of the subraster. | |
| 697 | + * @param bandList Array of band indices. | |
| 698 | + * @exception RasterFormatException | |
| 699 | + * if the specified bounding box is outside of the parent raster. | |
| 700 | + */ | |
| 701 | + public Raster createChild (int x, int y, | |
| 702 | + int width, int height, | |
| 703 | + int x0, int y0, | |
| 704 | + int bandList[]) { | |
| 705 | + return createWritableChild(x, y, width, height, x0, y0, bandList); | |
| 706 | + } | |
| 707 | + | |
| 708 | + /** | |
| 709 | + * Creates a Raster with the same layout but using a different | |
| 710 | + * width and height, and with new zeroed data arrays. | |
| 711 | + */ | |
| 712 | + public WritableRaster createCompatibleWritableRaster(int w, int h) { | |
| 713 | + if (w <= 0 || h <=0) { | |
| 714 | + throw new RasterFormatException("negative "+ | |
| 715 | + ((w <= 0) ? "width" : "height")); | |
| 716 | + } | |
| 717 | + | |
| 718 | + SampleModel sm = sampleModel.createCompatibleSampleModel(w,h); | |
| 719 | + | |
| 720 | + return new ByteBandedRaster(sm, new Point(0,0)); | |
| 721 | + } | |
| 722 | + | |
| 723 | + /** | |
| 724 | + * Creates a Raster with the same layout and the same | |
| 725 | + * width and height, and with new zeroed data arrays. If | |
| 726 | + * the Raster is a subRaster, this will call | |
| 727 | + * createCompatibleRaster(width, height). | |
| 728 | + */ | |
| 729 | + public WritableRaster createCompatibleWritableRaster() { | |
| 730 | + return createCompatibleWritableRaster(width, height); | |
| 731 | + } | |
| 732 | + | |
| 733 | + /** | |
| 734 | + * Verify that the layout parameters are consistent with | |
| 735 | + * the data. If strictCheck | |
| 736 | + * is false, this method will check for ArrayIndexOutOfBounds conditions. If | |
| 737 | + * strictCheck is true, this method will check for additional error | |
| 738 | + * conditions such as line wraparound (width of a line greater than | |
| 739 | + * the scanline stride). | |
| 740 | + * @return String Error string, if the layout is incompatible with | |
| 741 | + * the data. Otherwise returns null. | |
| 742 | + */ | |
| 743 | + private void verify (boolean strictCheck) { | |
| 744 | + // Make sure data for Raster is in a legal range | |
| 745 | + for (int i=0; i < dataOffsets.length; i++) { | |
| 746 | + if (dataOffsets[i] < 0) { | |
| 747 | + throw new RasterFormatException("Data offsets for band "+i+ | |
| 748 | + "("+dataOffsets[i]+ | |
| 749 | + ") must be >= 0"); | |
| 750 | + } | |
| 751 | + } | |
| 752 | + | |
| 753 | + int maxSize = 0; | |
| 754 | + int size; | |
| 755 | + | |
| 756 | + for (int i=0; i < numDataElements; i++) { | |
| 757 | + size = (height-1)*scanlineStride + (width-1) + dataOffsets[i]; | |
| 758 | + if (size > maxSize) { | |
| 759 | + maxSize = size; | |
| 760 | + } | |
| 761 | + } | |
| 762 | + | |
| 763 | + if (data.length == 1) { | |
| 764 | + if (data[0].length < maxSize*numDataElements) { | |
| 765 | + throw new RasterFormatException("Data array too small "+ | |
| 766 | + "(it is "+data[0].length+ | |
| 767 | + " and should be "+ | |
| 768 | + (maxSize*numDataElements)+ | |
| 769 | + " )"); | |
| 770 | + } | |
| 771 | + } | |
| 772 | + else { | |
| 773 | + for (int i=0; i < numDataElements; i++) { | |
| 774 | + if (data[i].length < maxSize) { | |
| 775 | + throw new RasterFormatException("Data array too small "+ | |
| 776 | + "(it is "+data[i].length+ | |
| 777 | + " and should be "+ | |
| 778 | + maxSize+" )"); | |
| 779 | + } | |
| 780 | + } | |
| 781 | + } | |
| 782 | + } | |
| 783 | + | |
| 784 | + public String toString() { | |
| 785 | + return new String ("ByteBandedRaster: width = "+width+" height = " | |
| 786 | + + height | |
| 787 | + +" #bands "+numDataElements | |
| 788 | + +" minX = "+minX+" minY = "+minY); | |
| 789 | + } | |
| 790 | + | |
| 791 | +} | |