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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.ComponentSampleModel; | ||
| 32 | import java.awt.image.SinglePixelPackedSampleModel; | ||
| 33 | import java.awt.image.DataBuffer; | ||
| 34 | import java.awt.image.DataBufferUShort; | ||
| 35 | import java.awt.Rectangle; | ||
| 36 | import java.awt.Point; | ||
| 37 | |||
| 38 | /** | ||
| 39 | * This class defines a Raster with pixels consisting of one or more 16-bit | ||
| 40 | * data elements stored in close proximity to each other in a short integer | ||
| 41 | * array. The bit precision per data element is that | ||
| 42 | * of the data type (that is, the bit precision for this Raster is 16). | ||
| 43 | * There is only one pixel stride and one scanline stride for all | ||
| 44 | * bands. This type of Raster can be used with a | ||
| 45 | * ComponentColorModel if there are multiple bands, or a | ||
| 46 | * IndexColorModel if there is only one band. | ||
| 47 | * <p> | ||
| 48 | * For example, 5-6-5 RGB image data can be represented by a | ||
| 49 | * ShortComponentRaster using a SinglePixelPackedSampleModel and | ||
| 50 | * a ComponentColorModel. | ||
| 51 | * | ||
| 52 | * | ||
| 53 | */ | ||
| 54 | public class ShortComponentRaster extends SunWritableRaster { | ||
| 55 | |||
| 56 | /** private band offset for use by native code */ | ||
| 57 | protected int bandOffset; | ||
| 58 | |||
| 59 | /** Data offsets for each band of image data. */ | ||
| 60 | protected int[] dataOffsets; | ||
| 61 | |||
| 62 | /** Scanline stride of the image data contained in this Raster. */ | ||
| 63 | protected int scanlineStride; | ||
| 64 | |||
| 65 | /** Pixel stride of the image data contained in this Raster. */ | ||
| 66 | protected int pixelStride; | ||
| 67 | |||
| 68 | /** The image data array. */ | ||
| 69 | protected short[] data; | ||
| 70 | |||
| 71 | int type; | ||
| 72 | |||
| 73 | /** A cached copy of minX + width for use in bounds checks. */ | ||
| 74 | private int maxX; | ||
| 75 | |||
| 76 | /** A cached copy of minY + height for use in bounds checks. */ | ||
| 77 | private int maxY; | ||
| 78 | |||
| 79 | static private native void initIDs(); | ||
| 80 | static { | ||
| 81 | /* ensure that the necessary native libraries are loaded */ | ||
| 82 | NativeLibLoader.loadLibraries(); | ||
| 83 | initIDs(); | ||
| 84 | } | ||
| 85 | |||
| 86 | /** | ||
| 87 | * Constructs a ShortComponentRaster with the given SampleModel. | ||
| 88 | * The Raster's upper left corner is origin and it is the same | ||
| 89 | * size as the SampleModel. A DataBuffer large enough to describe the | ||
| 90 | * Raster is automatically created. SampleModel must be of type | ||
| 91 | * ComponentSampleModel or SinglePixelPackedSampleModel. | ||
| 92 | * @param sampleModel The SampleModel that specifies the layout. | ||
| 93 | * @param origin The Point that specified the origin. | ||
| 94 | */ | ||
| 95 | public ShortComponentRaster(SampleModel sampleModel, Point origin) { | ||
| 96 | this(sampleModel, | ||
| 97 | sampleModel.createDataBuffer(), | ||
| 98 | new Rectangle(origin.x, | ||
| 99 | origin.y, | ||
| 100 | sampleModel.getWidth(), | ||
| 101 | sampleModel.getHeight()), | ||
| 102 | origin, | ||
| 103 | null); | ||
| 104 | } | ||
| 105 | |||
| 106 | /** | ||
| 107 | * Constructs a ShortComponentRaster with the given SampleModel | ||
| 108 | * and DataBuffer. The Raster's upper left corner is origin and | ||
| 109 | * it is the same sizes the SampleModel. The DataBuffer is not | ||
| 110 | * initialized and must be a DataBufferUShort compatible with SampleModel. | ||
| 111 | * SampleModel must be of type ComponentSampleModel or | ||
| 112 | * SinglePixelPackedSampleModel. | ||
| 113 | * @param sampleModel The SampleModel that specifies the layout. | ||
| 114 | * @param dataBuffer The DataBufferUShort that contains the image data. | ||
| 115 | * @param origin The Point that specifies the origin. | ||
| 116 | */ | ||
| 117 | public ShortComponentRaster(SampleModel sampleModel, | ||
| 118 | DataBuffer dataBuffer, | ||
| 119 | Point origin) { | ||
| 120 | this(sampleModel, | ||
| 121 | dataBuffer, | ||
| 122 | new Rectangle(origin.x, | ||
| 123 | origin.y, | ||
| 124 | sampleModel.getWidth(), | ||
| 125 | sampleModel.getHeight()), | ||
| 126 | origin, | ||
| 127 | null); | ||
| 128 | } | ||
| 129 | |||
| 130 | /** | ||
| 131 | * Constructs a ShortComponentRaster with the given SampleModel, | ||
| 132 | * DataBuffer, and parent. DataBuffer must be a DataBufferUShort and | ||
| 133 | * SampleModel must be of type ComponentSampleModel or | ||
| 134 | * SinglePixelPackedSampleModel. When translated into the base Raster's | ||
| 135 | * coordinate system, aRegion must be contained by the base Raster. | ||
| 136 | * Origin is the coodinate in the new Raster's coordinate system of | ||
| 137 | * the origin of the base Raster. (The base Raster is the Raster's | ||
| 138 | * ancestor which has no parent.) | ||
| 139 | * | ||
| 140 | * Note that this constructor should generally be called by other | ||
| 141 | * constructors or create methods, it should not be used directly. | ||
| 142 | * @param sampleModel The SampleModel that specifies the layout. | ||
| 143 | * @param dataBuffer The DataBufferUShort that contains the image data. | ||
| 144 | * @param aRegion The Rectangle that specifies the image area. | ||
| 145 | * @param origin The Point that specifies the origin. | ||
| 146 | * @param parent The parent (if any) of this raster. | ||
| 147 | */ | ||
| 148 | public ShortComponentRaster(SampleModel sampleModel, | ||
| 149 | DataBuffer dataBuffer, | ||
| 150 | Rectangle aRegion, | ||
| 151 | Point origin, | ||
| 152 | ShortComponentRaster parent) { | ||
| 153 | |||
| 154 | super(sampleModel, dataBuffer, aRegion, origin, parent); | ||
| 155 | this.maxX = minX + width; | ||
| 156 | this.maxY = minY + height; | ||
| 157 | |||
| 158 | if(!(dataBuffer instanceof DataBufferUShort)) { | ||
| 159 | throw new RasterFormatException("ShortComponentRasters must have "+ | ||
| 160 | "short DataBuffers"); | ||
| 161 | } | ||
| 162 | |||
| 163 | DataBufferUShort dbus = (DataBufferUShort)dataBuffer; | ||
| 164 | this.data = stealData(dbus, 0); | ||
| 165 | if (dbus.getNumBanks() != 1) { | ||
| 166 | throw new | ||
| 167 | RasterFormatException("DataBuffer for ShortComponentRasters"+ | ||
| 168 | " must only have 1 bank."); | ||
| 169 | } | ||
| 170 | int dbOffset = dbus.getOffset(); | ||
| 171 | |||
| 172 | if (sampleModel instanceof ComponentSampleModel) { | ||
| 173 | ComponentSampleModel csm = (ComponentSampleModel)sampleModel; | ||
| 174 | this.type = IntegerComponentRaster.TYPE_USHORT_SAMPLES; | ||
| 175 | this.scanlineStride = csm.getScanlineStride(); | ||
| 176 | this.pixelStride = csm.getPixelStride(); | ||
| 177 | this.dataOffsets = csm.getBandOffsets(); | ||
| 178 | int xOffset = aRegion.x - origin.x; | ||
| 179 | int yOffset = aRegion.y - origin.y; | ||
| 180 | for (int i = 0; i < getNumDataElements(); i++) { | ||
| 181 | dataOffsets[i] += dbOffset + | ||
| 182 | xOffset*pixelStride+yOffset*scanlineStride; | ||
| 183 | } | ||
| 184 | } else if (sampleModel instanceof SinglePixelPackedSampleModel) { | ||
| 185 | SinglePixelPackedSampleModel sppsm = | ||
| 186 | (SinglePixelPackedSampleModel)sampleModel; | ||
| 187 | this.type = IntegerComponentRaster.TYPE_USHORT_PACKED_SAMPLES; | ||
| 188 | this.scanlineStride = sppsm.getScanlineStride(); | ||
| 189 | this.pixelStride = 1; | ||
| 190 | this.dataOffsets = new int[1]; | ||
| 191 | this.dataOffsets[0] = dbOffset; | ||
| 192 | int xOffset = aRegion.x - origin.x; | ||
| 193 | int yOffset = aRegion.y - origin.y; | ||
| 194 | dataOffsets[0] += xOffset+yOffset*scanlineStride; | ||
| 195 | } else { | ||
| 196 | throw new RasterFormatException("ShortComponentRasters must have"+ | ||
| 197 | "ComponentSampleModel or SinglePixelPackedSampleModel"); | ||
| 198 | } | ||
| 199 | this.bandOffset = this.dataOffsets[0]; | ||
| 200 | |||
| 201 | verify(false); | ||
| 202 | } | ||
| 203 | |||
| 204 | /** | ||
| 205 | * Returns a copy of the data offsets array. For each band the data offset | ||
| 206 | * is the index into the band's data array, of the first sample of the | ||
| 207 | * band. | ||
| 208 | */ | ||
| 209 | public int[] getDataOffsets() { | ||
| 210 | return (int[]) dataOffsets.clone(); | ||
| 211 | } | ||
| 212 | |||
| 213 | /** | ||
| 214 | * Returns the data offset for the specified band. The data offset | ||
| 215 | * is the index into the data array in which the first sample | ||
| 216 | * of the first scanline is stored. | ||
| 217 | * @param band The band whose offset is returned. | ||
| 218 | */ | ||
| 219 | public int getDataOffset(int band) { | ||
| 220 | return dataOffsets[band]; | ||
| 221 | } | ||
| 222 | |||
| 223 | /** | ||
| 224 | * Returns the scanline stride -- the number of data array elements between | ||
| 225 | * a given sample and the same sample in the same column of the next row. | ||
| 226 | */ | ||
| 227 | public int getScanlineStride() { | ||
| 228 | return scanlineStride; | ||
| 229 | } | ||
| 230 | |||
| 231 | /** | ||
| 232 | * Returns pixel stride -- the number of data array elements between two | ||
| 233 | * samples for the same band on the same scanline. | ||
| 234 | */ | ||
| 235 | public int getPixelStride() { | ||
| 236 | return pixelStride; | ||
| 237 | } | ||
| 238 | |||
| 239 | /** | ||
| 240 | * Returns a reference to the data array. | ||
| 241 | */ | ||
| 242 | public short[] getDataStorage() { | ||
| 243 | return data; | ||
| 244 | } | ||
| 245 | |||
| 246 | /** | ||
| 247 | * Returns the data elements for all bands at the specified | ||
| 248 | * location. | ||
| 249 | * An ArrayIndexOutOfBounds exception will be thrown at runtime | ||
| 250 | * if the pixel coordinate is out of bounds. | ||
| 251 | * A ClassCastException will be thrown if the input object is non null | ||
| 252 | * and references anything other than an array of transferType. | ||
| 253 | * @param x The X coordinate of the pixel location. | ||
| 254 | * @param y The Y coordinate of the pixel location. | ||
| 255 | * @param outData An object reference to an array of type defined by | ||
| 256 | * getTransferType() and length getNumDataElements(). | ||
| 257 | * If null an array of appropriate type and size will be | ||
| 258 | * allocated. | ||
| 259 | * @return An object reference to an array of type defined by | ||
| 260 | * getTransferType() with the request pixel data. | ||
| 261 | */ | ||
| 262 | public Object getDataElements(int x, int y, Object obj) { | ||
| 263 | if ((x < this.minX) || (y < this.minY) || | ||
| 264 | (x >= this.maxX) || (y >= this.maxY)) { | ||
| 265 | throw new ArrayIndexOutOfBoundsException | ||
| 266 | ("Coordinate out of bounds!"); | ||
| 267 | } | ||
| 268 | short outData[]; | ||
| 269 | if (obj == null) { | ||
| 270 | outData = new short[numDataElements]; | ||
| 271 | } else { | ||
| 272 | outData = (short[])obj; | ||
| 273 | } | ||
| 274 | int off = (y-minY)*scanlineStride + | ||
| 275 | (x-minX)*pixelStride; | ||
| 276 | |||
| 277 | for (int band = 0; band < numDataElements; band++) { | ||
| 278 | outData[band] = data[dataOffsets[band] + off]; | ||
| 279 | } | ||
| 280 | |||
| 281 | return outData; | ||
| 282 | } | ||
| 283 | |||
| 284 | /** | ||
| 285 | * Returns an array of data elements from the specified rectangular | ||
| 286 | * region. | ||
| 287 | * An ArrayIndexOutOfBounds exception will be thrown at runtime | ||
| 288 | * if the pixel coordinates are out of bounds. | ||
| 289 | * A ClassCastException will be thrown if the input object is non null | ||
| 290 | * and references anything other than an array of transferType. | ||
| 291 | * <pre> | ||
| 292 | * short[] bandData = (short[])Raster.getDataElements(x, y, w, h, null); | ||
| 293 | * int numDataElements = Raster.getBands(); | ||
| 294 | * short[] pixel = new short[numDataElements]; | ||
| 295 | * // To find the data element at location (x2, y2) | ||
| 296 | * System.arraycopy(bandData, ((y2-y)*w + (x2-x))*numDataElements, | ||
| 297 | * pixel, 0, numDataElements); | ||
| 298 | * </pre> | ||
| 299 | * @param x The X coordinate of the upper left pixel location. | ||
| 300 | * @param y The Y coordinate of the upper left pixel location. | ||
| 301 | * @param width Width of the pixel rectangle. | ||
| 302 | * @param height Height of the pixel rectangle. | ||
| 303 | * @param outData An object reference to an array of type defined by | ||
| 304 | * getTransferType() and length w*h*getNumDataElements(). | ||
| 305 | * If null an array of appropriate type and size will be | ||
| 306 | * allocated. | ||
| 307 | * @return An object reference to an array of type defined by | ||
| 308 | * getTransferType() with the request pixel data. | ||
| 309 | */ | ||
| 310 | public Object getDataElements(int x, int y, int w, int h, Object obj) { | ||
| 311 | if ((x < this.minX) || (y < this.minY) || | ||
| 312 | (x + w > this.maxX) || (y + h > this.maxY)) { | ||
| 313 | throw new ArrayIndexOutOfBoundsException | ||
| 314 | ("Coordinate out of bounds!"); | ||
| 315 | } | ||
| 316 | short outData[]; | ||
| 317 | if (obj == null) { | ||
| 318 | outData = new short[w*h*numDataElements]; | ||
| 319 | } else { | ||
| 320 | outData = (short[])obj; | ||
| 321 | } | ||
| 322 | int yoff = (y-minY)*scanlineStride + | ||
| 323 | (x-minX)*pixelStride; | ||
| 324 | |||
| 325 | int xoff; | ||
| 326 | int off = 0; | ||
| 327 | int xstart; | ||
| 328 | int ystart; | ||
| 329 | |||
| 330 | for (ystart=0; ystart < h; ystart++, yoff += scanlineStride) { | ||
| 331 | xoff = yoff; | ||
| 332 | for (xstart=0; xstart < w; xstart++, xoff += pixelStride) { | ||
| 333 | for (int c = 0; c < numDataElements; c++) { | ||
| 334 | outData[off++] = data[dataOffsets[c] + xoff]; | ||
| 335 | } | ||
| 336 | } | ||
| 337 | } | ||
| 338 | |||
| 339 | return outData; | ||
| 340 | } | ||
| 341 | |||
| 342 | /** | ||
| 343 | * Returns a short integer array of data elements from the | ||
| 344 | * specified rectangular region. | ||
| 345 | * An ArrayIndexOutOfBounds exception will be thrown at runtime | ||
| 346 | * if the pixel coordinates are out of bounds. | ||
| 347 | * <pre> | ||
| 348 | * short[] bandData = Raster.getShortData(x, y, w, h, null); | ||
| 349 | * // To find the data element at location (x2, y2) | ||
| 350 | * short dataElenent = bandData[((y2-y)*w + (x2-x))]; | ||
| 351 | * </pre> | ||
| 352 | * @param x The X coordinate of the upper left pixel location. | ||
| 353 | * @param y The Y coordinate of the upper left pixel location. | ||
| 354 | * @param width Width of the sample rectangle. | ||
| 355 | * @param height Height of the sample rectangle. | ||
| 356 | * @param band The band to return. | ||
| 357 | * @param outData If non-null, data elements for all bands | ||
| 358 | * at the specified location are returned in this array. | ||
| 359 | * @return Data array with data elements for all bands. | ||
| 360 | */ | ||
| 361 | public short[] getShortData(int x, int y, int w, int h, | ||
| 362 | int band, short[] outData) { | ||
| 363 | // Bounds check for 'band' will be performed automatically | ||
| 364 | if ((x < this.minX) || (y < this.minY) || | ||
| 365 | (x + w > this.maxX) || (y + h > this.maxY)) { | ||
| 366 | throw new ArrayIndexOutOfBoundsException | ||
| 367 | ("Coordinate out of bounds!"); | ||
| 368 | } | ||
| 369 | if (outData == null) { | ||
| 370 | outData = new short[numDataElements*w*h]; | ||
| 371 | } | ||
| 372 | int yoff = (y-minY)*scanlineStride + | ||
| 373 | (x-minX)*pixelStride+ dataOffsets[band]; | ||
| 374 | int xoff; | ||
| 375 | int off = 0; | ||
| 376 | int xstart; | ||
| 377 | int ystart; | ||
| 378 | |||
| 379 | if (pixelStride == 1) { | ||
| 380 | if (scanlineStride == w) { | ||
| 381 | System.arraycopy(data, yoff, outData, 0, w*h); | ||
| 382 | } | ||
| 383 | else { | ||
| 384 | for (ystart=0; ystart < h; ystart++, yoff += scanlineStride) { | ||
| 385 | System.arraycopy(data, yoff, outData, off, w); | ||
| 386 | off += w; | ||
| 387 | } | ||
| 388 | } | ||
| 389 | } | ||
| 390 | else { | ||
| 391 | for (ystart=0; ystart < h; ystart++, yoff += scanlineStride) { | ||
| 392 | xoff = yoff; | ||
| 393 | for (xstart=0; xstart < w; xstart++, xoff += pixelStride) { | ||
| 394 | outData[off++] = data[xoff]; | ||
| 395 | } | ||
| 396 | } | ||
| 397 | } | ||
| 398 | |||
| 399 | return outData; | ||
| 400 | } | ||
| 401 | |||
| 402 | /** | ||
| 403 | * Returns a short integer array of data elements from the | ||
| 404 | * specified rectangular region. | ||
| 405 | * An ArrayIndexOutOfBounds exception will be thrown at runtime | ||
| 406 | * if the pixel coordinates are out of bounds. | ||
| 407 | * <pre> | ||
| 408 | * short[] bandData = Raster.getShortData(x, y, w, h, null); | ||
| 409 | * int numDataElements = Raster.getNumBands(); | ||
| 410 | * short[] pixel = new short[numDataElements]; | ||
| 411 | * // To find the data element at location (x2, y2) | ||
| 412 | * System.arraycopy(bandData, ((y2-y)*w + (x2-x))*numDataElements, | ||
| 413 | * pixel, 0, numDataElements); | ||
| 414 | * </pre> | ||
| 415 | * @param x The X coordinate of the upper left pixel location. | ||
| 416 | * @param y The Y coordinate of the upper left pixel location. | ||
| 417 | * @param width Width of the pixel rectangle. | ||
| 418 | * @param height Height of the pixel rectangle. | ||
| 419 | * @param outData If non-null, data elements for all bands | ||
| 420 | * at the specified location are returned in this array. | ||
| 421 | * @return Data array with data elements for all bands. | ||
| 422 | */ | ||
| 423 | public short[] getShortData(int x, int y, int w, int h, short[] outData) { | ||
| 424 | if ((x < this.minX) || (y < this.minY) || | ||
| 425 | (x + w > this.maxX) || (y + h > this.maxY)) { | ||
| 426 | throw new ArrayIndexOutOfBoundsException | ||
| 427 | ("Coordinate out of bounds!"); | ||
| 428 | } | ||
| 429 | if (outData == null) { | ||
| 430 | outData = new short[numDataElements*w*h]; | ||
| 431 | } | ||
| 432 | int yoff = (y-minY)*scanlineStride + | ||
| 433 | (x-minX)*pixelStride; | ||
| 434 | int xoff; | ||
| 435 | int off = 0; | ||
| 436 | int xstart; | ||
| 437 | int ystart; | ||
| 438 | |||
| 439 | for (ystart=0; ystart < h; ystart++, yoff += scanlineStride) { | ||
| 440 | xoff = yoff; | ||
| 441 | for (xstart=0; xstart < w; xstart++, xoff += pixelStride) { | ||
| 442 | for (int c = 0; c < numDataElements; c++) { | ||
| 443 | outData[off++] = data[dataOffsets[c] + xoff]; | ||
| 444 | } | ||
| 445 | } | ||
| 446 | } | ||
| 447 | |||
| 448 | return outData; | ||
| 449 | } | ||
| 450 | |||
| 451 | /** | ||
| 452 | * Stores the data elements for all bands at the specified location. | ||
| 453 | * An ArrayIndexOutOfBounds exception will be thrown at runtime | ||
| 454 | * if the pixel coordinate is out of bounds. | ||
| 455 | * A ClassCastException will be thrown if the input object is non null | ||
| 456 | * and references anything other than an array of transferType. | ||
| 457 | * @param x The X coordinate of the pixel location. | ||
| 458 | * @param y The Y coordinate of the pixel location. | ||
| 459 | * @param inData An object reference to an array of type defined by | ||
| 460 | * getTransferType() and length getNumDataElements() | ||
| 461 | * containing the pixel data to place at x,y. | ||
| 462 | */ | ||
| 463 | public void setDataElements(int x, int y, Object obj) { | ||
| 464 | if ((x < this.minX) || (y < this.minY) || | ||
| 465 | (x >= this.maxX) || (y >= this.maxY)) { | ||
| 466 | throw new ArrayIndexOutOfBoundsException | ||
| 467 | ("Coordinate out of bounds!"); | ||
| 468 | } | ||
| 469 | short inData[] = (short[])obj; | ||
| 470 | int off = (y-minY)*scanlineStride + | ||
| 471 | (x-minX)*pixelStride; | ||
| 472 | for (int i = 0; i < numDataElements; i++) { | ||
| 473 | data[dataOffsets[i] + off] = (short) inData[i]; | ||
| 474 | } | ||
| 475 | |||
| 476 | markDirty(); | ||
| 477 | } | ||
| 478 | |||
| 479 | /** | ||
| 480 | * Stores the Raster data at the specified location. | ||
| 481 | * An ArrayIndexOutOfBounds exception will be thrown at runtime | ||
| 482 | * if the pixel coordinates are out of bounds. | ||
| 483 | * @param x The X coordinate of the pixel location. | ||
| 484 | * @param y The Y coordinate of the pixel location. | ||
| 485 | * @param inRaster Raster of data to place at x,y location. | ||
| 486 | */ | ||
| 487 | public void setDataElements(int x, int y, Raster inRaster) { | ||
| 488 | int dstOffX = x + inRaster.getMinX(); | ||
| 489 | int dstOffY = y + inRaster.getMinY(); | ||
| 490 | int width = inRaster.getWidth(); | ||
| 491 | int height = inRaster.getHeight(); | ||
| 492 | if ((dstOffX < this.minX) || (dstOffY < this.minY) || | ||
| 493 | (dstOffX + width > this.maxX) || (dstOffY + height > this.maxY)) { | ||
| 494 | throw new ArrayIndexOutOfBoundsException | ||
| 495 | ("Coordinate out of bounds!"); | ||
| 496 | } | ||
| 497 | |||
| 498 | setDataElements(dstOffX, dstOffY, width, height, inRaster); | ||
| 499 | } | ||
| 500 | |||
| 501 | /** | ||
| 502 | * Stores the Raster data at the specified location. | ||
| 503 | * @param dstX The absolute X coordinate of the destination pixel | ||
| 504 | * that will receive a copy of the upper-left pixel of the | ||
| 505 | * inRaster | ||
| 506 | * @param dstY The absolute Y coordinate of the destination pixel | ||
| 507 | * that will receive a copy of the upper-left pixel of the | ||
| 508 | * inRaster | ||
| 509 | * @param width The number of pixels to store horizontally | ||
| 510 | * @param height The number of pixels to store vertically | ||
| 511 | * @param inRaster Raster of data to place at x,y location. | ||
| 512 | */ | ||
| 513 | private void setDataElements(int dstX, int dstY, | ||
| 514 | int width, int height, | ||
| 515 | Raster inRaster) { | ||
| 516 | // Assume bounds checking has been performed previously | ||
| 517 | if (width <= 0 || height <= 0) { | ||
| 518 | return; | ||
| 519 | } | ||
| 520 | |||
| 521 | // Write inRaster (minX, minY) to (dstX, dstY) | ||
| 522 | |||
| 523 | int srcOffX = inRaster.getMinX(); | ||
| 524 | int srcOffY = inRaster.getMinY(); | ||
| 525 | Object tdata = null; | ||
| 526 | |||
| 527 | // // REMIND: Do something faster! | ||
| 528 | // if (inRaster instanceof ShortComponentRaster) { | ||
| 529 | // } | ||
| 530 | |||
| 531 | for (int startY=0; startY < height; startY++) { | ||
| 532 | // Grab one scanline at a time | ||
| 533 | tdata = inRaster.getDataElements(srcOffX, srcOffY+startY, | ||
| 534 | width, 1, tdata); | ||
| 535 | setDataElements(dstX, dstY + startY, width, 1, tdata); | ||
| 536 | } | ||
| 537 | } | ||
| 538 | |||
| 539 | /** | ||
| 540 | * Stores an array of data elements into the specified rectangular | ||
| 541 | * region. | ||
| 542 | * An ArrayIndexOutOfBounds exception will be thrown at runtime | ||
| 543 | * if the pixel coordinates are out of bounds. | ||
| 544 | * A ClassCastException will be thrown if the input object is non null | ||
| 545 | * and references anything other than an array of transferType. | ||
| 546 | * The data elements in the | ||
| 547 | * data array are assumed to be packed. That is, a data element | ||
| 548 | * for the nth band at location (x2, y2) would be found at: | ||
| 549 | * <pre> | ||
| 550 | * inData[((y2-y)*w + (x2-x))*numDataElements + n] | ||
| 551 | * </pre> | ||
| 552 | * @param x The X coordinate of the upper left pixel location. | ||
| 553 | * @param y The Y coordinate of the upper left pixel location. | ||
| 554 | * @param w Width of the pixel rectangle. | ||
| 555 | * @param h Height of the pixel rectangle. | ||
| 556 | * @param inData An object reference to an array of type defined by | ||
| 557 | * getTransferType() and length w*h*getNumDataElements() | ||
| 558 | * containing the pixel data to place between x,y and | ||
| 559 | * x+h, y+h. | ||
| 560 | */ | ||
| 561 | public void setDataElements(int x, int y, int w, int h, Object obj) { | ||
| 562 | if ((x < this.minX) || (y < this.minY) || | ||
| 563 | (x + w > this.maxX) || (y + h > this.maxY)) { | ||
| 564 | throw new ArrayIndexOutOfBoundsException | ||
| 565 | ("Coordinate out of bounds!"); | ||
| 566 | } | ||
| 567 | short inData[] = (short[])obj; | ||
| 568 | int yoff = (y-minY)*scanlineStride + | ||
| 569 | (x-minX)*pixelStride; | ||
| 570 | int xoff; | ||
| 571 | int off = 0; | ||
| 572 | int xstart; | ||
| 573 | int ystart; | ||
| 574 | |||
| 575 | for (ystart=0; ystart < h; ystart++, yoff += scanlineStride) { | ||
| 576 | xoff = yoff; | ||
| 577 | for (xstart=0; xstart < w; xstart++, xoff += pixelStride) { | ||
| 578 | for (int c = 0; c < numDataElements; c++) { | ||
| 579 | data[dataOffsets[c] + xoff] = (short) inData[off++]; | ||
| 580 | } | ||
| 581 | } | ||
| 582 | } | ||
| 583 | |||
| 584 | markDirty(); | ||
| 585 | } | ||
| 586 | |||
| 587 | /** | ||
| 588 | * Stores a short integer array of data elements into the | ||
| 589 | * specified rectangular region. | ||
| 590 | * An ArrayIndexOutOfBounds exception will be thrown at runtime | ||
| 591 | * if the pixel coordinates are out of bounds. | ||
| 592 | * The data elements in the | ||
| 593 | * data array are assumed to be packed. That is, a data element | ||
| 594 | * at location (x2, y2) would be found at: | ||
| 595 | * <pre> | ||
| 596 | * inData[((y2-y)*w + (x2-x))] | ||
| 597 | * </pre> | ||
| 598 | * @param x The X coordinate of the upper left pixel location. | ||
| 599 | * @param y The Y coordinate of the upper left pixel location. | ||
| 600 | * @param w Width of the pixel rectangle. | ||
| 601 | * @param h Height of the pixel rectangle. | ||
| 602 | * @param band The band to set. | ||
| 603 | * @param inData The data elements to be stored. | ||
| 604 | */ | ||
| 605 | public void putShortData(int x, int y, int w, int h, | ||
| 606 | int band, short[] inData) { | ||
| 607 | // Bounds check for 'band' will be performed automatically | ||
| 608 | if ((x < this.minX) || (y < this.minY) || | ||
| 609 | (x + w > this.maxX) || (y + h > this.maxY)) { | ||
| 610 | throw new ArrayIndexOutOfBoundsException | ||
| 611 | ("Coordinate out of bounds!"); | ||
| 612 | } | ||
| 613 | int yoff = (y-minY)*scanlineStride + | ||
| 614 | (x-minX)*pixelStride + dataOffsets[band]; | ||
| 615 | int xoff; | ||
| 616 | int off = 0; | ||
| 617 | int xstart; | ||
| 618 | int ystart; | ||
| 619 | |||
| 620 | if (pixelStride == 1) { | ||
| 621 | if (scanlineStride == w) { | ||
| 622 | System.arraycopy(inData, 0, data, yoff, w*h); | ||
| 623 | } | ||
| 624 | else { | ||
| 625 | for (ystart=0; ystart < h; ystart++, yoff += scanlineStride) { | ||
| 626 | System.arraycopy(inData, off, data, yoff, w); | ||
| 627 | off += w; | ||
| 628 | } | ||
| 629 | } | ||
| 630 | } | ||
| 631 | else { | ||
| 632 | for (ystart=0; ystart < h; ystart++, yoff += scanlineStride) { | ||
| 633 | xoff = yoff; | ||
| 634 | for (xstart=0; xstart < w; xstart++, xoff += pixelStride) { | ||
| 635 | data[xoff] = inData[off++]; | ||
| 636 | } | ||
| 637 | } | ||
| 638 | } | ||
| 639 | |||
| 640 | markDirty(); | ||
| 641 | } | ||
| 642 | |||
| 643 | /** | ||
| 644 | * Stores a short integer array of data elements into the | ||
| 645 | * specified rectangular region. | ||
| 646 | * An ArrayIndexOutOfBounds exception will be thrown at runtime | ||
| 647 | * if the pixel coordinates are out of bounds. | ||
| 648 | * The data elements in the | ||
| 649 | * data array are assumed to be packed. That is, a data element | ||
| 650 | * for the nth band at location (x2, y2) would be found at: | ||
| 651 | * <pre> | ||
| 652 | * inData[((y2-y)*w + (x2-x))*numDataElements + n] | ||
| 653 | * </pre> | ||
| 654 | * @param x The X coordinate of the upper left pixel location. | ||
| 655 | * @param y The Y coordinate of the upper left pixel location. | ||
| 656 | * @param w Width of the pixel rectangle. | ||
| 657 | * @param h Height of the pixel rectangle. | ||
| 658 | * @param inData The data elements to be stored. | ||
| 659 | */ | ||
| 660 | public void putShortData(int x, int y, int w, int h, short[] inData) { | ||
| 661 | if ((x < this.minX) || (y < this.minY) || | ||
| 662 | (x + w > this.maxX) || (y + h > this.maxY)) { | ||
| 663 | throw new ArrayIndexOutOfBoundsException | ||
| 664 | ("Coordinate out of bounds!"); | ||
| 665 | } | ||
| 666 | int yoff = (y-minY)*scanlineStride + | ||
| 667 | (x-minX)*pixelStride; | ||
| 668 | int xoff; | ||
| 669 | int off = 0; | ||
| 670 | int xstart; | ||
| 671 | int ystart; | ||
| 672 | |||
| 673 | for (ystart=0; ystart < h; ystart++, yoff += scanlineStride) { | ||
| 674 | xoff = yoff; | ||
| 675 | for (xstart=0; xstart < w; xstart++, xoff += pixelStride) { | ||
| 676 | for (int c = 0; c < numDataElements; c++) { | ||
| 677 | data[dataOffsets[c] + xoff] = inData[off++]; | ||
| 678 | } | ||
| 679 | } | ||
| 680 | } | ||
| 681 | |||
| 682 | markDirty(); | ||
| 683 | } | ||
| 684 | |||
| 685 | /** | ||
| 686 | * Creates a subraster given a region of the raster. The x and y | ||
| 687 | * coordinates specify the horizontal and vertical offsets | ||
| 688 | * from the upper-left corner of this raster to the upper-left corner | ||
| 689 | * of the subraster. A subset of the bands of the parent Raster may | ||
| 690 | * be specified. If this is null, then all the bands are present in the | ||
| 691 | * subRaster. A translation to the subRaster may also be specified. | ||
| 692 | * Note that the subraster will reference the same | ||
| 693 | * band objects as the parent raster, but using different offsets. | ||
| 694 | * @param x X offset. | ||
| 695 | * @param y Y offset. | ||
| 696 | * @param width Width (in pixels) of the subraster. | ||
| 697 | * @param height Height (in pixels) of the subraster. | ||
| 698 | * @param x0 Translated X origin of the subraster. | ||
| 699 | * @param y0 Translated Y origin of the subraster. | ||
| 700 | * @param bandList Array of band indices. | ||
| 701 | * @exception RasterFormatException | ||
| 702 | * if the specified bounding box is outside of the parent raster. | ||
| 703 | */ | ||
| 704 | public Raster createChild (int x, int y, | ||
| 705 | int width, int height, | ||
| 706 | int x0, int y0, int[] bandList) { | ||
| 707 | WritableRaster newRaster = createWritableChild(x, y, | ||
| 708 | width, height, | ||
| 709 | x0, y0, | ||
| 710 | bandList); | ||
| 711 | return (Raster) newRaster; | ||
| 712 | } | ||
| 713 | |||
| 714 | /** | ||
| 715 | * Creates a Writable subRaster given a region of the Raster. The x and y | ||
| 716 | * coordinates specify the horizontal and vertical offsets | ||
| 717 | * from the upper-left corner of this Raster to the upper-left corner | ||
| 718 | * of the subRaster. A subset of the bands of the parent Raster may | ||
| 719 | * be specified. If this is null, then all the bands are present in the | ||
| 720 | * subRaster. A translation to the subRaster may also be specified. | ||
| 721 | * Note that the subRaster will reference the same | ||
| 722 | * DataBuffers as the parent Raster, but using different offsets. | ||
| 723 | * @param x X offset. | ||
| 724 | * @param y Y offset. | ||
| 725 | * @param width Width (in pixels) of the subraster. | ||
| 726 | * @param height Height (in pixels) of the subraster. | ||
| 727 | * @param x0 Translated X origin of the subraster. | ||
| 728 | * @param y0 Translated Y origin of the subraster. | ||
| 729 | * @param bandList Array of band indices. | ||
| 730 | * @exception RasterFormatException | ||
| 731 | * if the specified bounding box is outside of the parent Raster. | ||
| 732 | */ | ||
| 733 | public WritableRaster createWritableChild(int x, int y, | ||
| 734 | int width, int height, | ||
| 735 | int x0, int y0, | ||
| 736 | int[] bandList) { | ||
| 737 | if (x < this.minX) { | ||
| 738 | throw new RasterFormatException("x lies outside the raster"); | ||
| 739 | } | ||
| 740 | if (y < this.minY) { | ||
| 741 | throw new RasterFormatException("y lies outside the raster"); | ||
| 742 | } | ||
| 743 | if ((x+width < x) || (x+width > this.minX + this.width)) { | ||
| 744 | throw new RasterFormatException("(x + width) is outside of Raster"); | ||
| 745 | } | ||
| 746 | if ((y+height < y) || (y+height > this.minY + this.height)) { | ||
| 747 | throw new RasterFormatException("(y + height) is outside of Raster"); | ||
| 748 | } | ||
| 749 | |||
| 750 | SampleModel sm; | ||
| 751 | |||
| 752 | if (bandList != null) | ||
| 753 | sm = sampleModel.createSubsetSampleModel(bandList); | ||
| 754 | else | ||
| 755 | sm = sampleModel; | ||
| 756 | |||
| 757 | int deltaX = x0 - x; | ||
| 758 | int deltaY = y0 - y; | ||
| 759 | |||
| 760 | return new ShortComponentRaster(sm, | ||
| 761 | dataBuffer, | ||
| 762 | new Rectangle(x0, y0, width, height), | ||
| 763 | new Point(sampleModelTranslateX+deltaX, | ||
| 764 | sampleModelTranslateY+deltaY), | ||
| 765 | this); | ||
| 766 | } | ||
| 767 | |||
| 768 | /** | ||
| 769 | * Creates a Raster with the same layout but using a different | ||
| 770 | * width and height, and with new zeroed data arrays. | ||
| 771 | */ | ||
| 772 | public WritableRaster createCompatibleWritableRaster(int w, int h) { | ||
| 773 | if (w <= 0 || h <=0) { | ||
| 774 | throw new RasterFormatException("negative "+ | ||
| 775 | ((w <= 0) ? "width" : "height")); | ||
| 776 | } | ||
| 777 | |||
| 778 | SampleModel sm = sampleModel.createCompatibleSampleModel(w, h); | ||
| 779 | |||
| 780 | return new ShortComponentRaster(sm, new Point(0, 0)); | ||
| 781 | } | ||
| 782 | |||
| 783 | /** | ||
| 784 | * Creates a Raster with the same layout and the same | ||
| 785 | * width and height, and with new zeroed data arrays. If | ||
| 786 | * the Raster is a subRaster, this will call | ||
| 787 | * createCompatibleRaster(width, height). | ||
| 788 | */ | ||
| 789 | public WritableRaster createCompatibleWritableRaster() { | ||
| 790 | return createCompatibleWritableRaster(width,height); | ||
| 791 | } | ||
| 792 | |||
| 793 | /** | ||
| 794 | * Verify that the layout parameters are consistent with | ||
| 795 | * the data. If strictCheck | ||
| 796 | * is false, this method will check for ArrayIndexOutOfBounds conditions. If | ||
| 797 | * strictCheck is true, this method will check for additional error | ||
| 798 | * conditions such as line wraparound (width of a line greater than | ||
| 799 | * the scanline stride). | ||
| 800 | * @return String Error string, if the layout is incompatible with | ||
| 801 | * the data. Otherwise returns null. | ||
| 802 | */ | ||
| 803 | private void verify (boolean strictCheck) { | ||
| 804 | // Make sure data for Raster is in a legal range | ||
| 805 | for (int i=0; i < dataOffsets.length; i++) { | ||
| 806 | if (dataOffsets[i] < 0) { | ||
| 807 | throw new RasterFormatException("Data offsets for band "+i+ | ||
| 808 | "("+dataOffsets[i]+ | ||
| 809 | ") must be >= 0"); | ||
| 810 | } | ||
| 811 | } | ||
| 812 | |||
| 813 | int maxSize = 0; | ||
| 814 | int size; | ||
| 815 | |||
| 816 | for (int i=0; i < numDataElements; i++) { | ||
| 817 | size = (height-1)*scanlineStride + (width-1)*pixelStride + | ||
| 818 | dataOffsets[i]; | ||
| 819 | if (size > maxSize) { | ||
| 820 | maxSize = size; | ||
| 821 | } | ||
| 822 | } | ||
| 823 | if (data.length < maxSize) { | ||
| 824 | throw new RasterFormatException("Data array too small (should be "+ | ||
| 825 | maxSize+" )"); | ||
| 826 | } | ||
| 827 | } | ||
| 828 | |||
| 829 | public String toString() { | ||
| 830 | return new String ("ShortComponentRaster: width = "+width | ||
| 831 | +" height = " + height | ||
| 832 | +" #numDataElements "+numDataElements); | ||
| 833 | // +" xOff = "+xOffset+" yOff = "+yOffset); | ||
| 834 | } | ||
| 835 | |||
| 836 | } | ||