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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 | } | ||