J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1997-2007 Sun Microsystems, Inc. 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. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any 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 | } |