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| 1 | /* | ||
| 2 | * Copyright (c) 2003, 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 com.sun.imageio.plugins.common; | ||
| 27 | |||
| 28 | import java.awt.Point; | ||
| 29 | import java.awt.Rectangle; | ||
| 30 | import java.awt.Transparency; | ||
| 31 | import java.awt.color.ColorSpace; | ||
| 32 | import java.awt.image.BufferedImage; | ||
| 33 | import java.awt.image.ColorModel; | ||
| 34 | import java.awt.image.ComponentColorModel; | ||
| 35 | import java.awt.image.ComponentSampleModel; | ||
| 36 | import java.awt.image.DataBuffer; | ||
| 37 | import java.awt.image.DataBufferByte; | ||
| 38 | import java.awt.image.DataBufferInt; | ||
| 39 | import java.awt.image.DataBufferShort; | ||
| 40 | import java.awt.image.DataBufferUShort; | ||
| 41 | import java.awt.image.DirectColorModel; | ||
| 42 | import java.awt.image.IndexColorModel; | ||
| 43 | import java.awt.image.MultiPixelPackedSampleModel; | ||
| 44 | import java.awt.image.Raster; | ||
| 45 | import java.awt.image.RenderedImage; | ||
| 46 | import java.awt.image.SampleModel; | ||
| 47 | import java.awt.image.SinglePixelPackedSampleModel; | ||
| 48 | import java.awt.image.WritableRaster; | ||
| 49 | import java.util.Arrays; | ||
| 50 | |||
| 51 | //import javax.imageio.ImageTypeSpecifier; | ||
| 52 | |||
| 53 | import javax.imageio.IIOException; | ||
| 54 | import javax.imageio.IIOImage; | ||
| 55 | import javax.imageio.ImageTypeSpecifier; | ||
| 56 | import javax.imageio.ImageWriter; | ||
| 57 | import javax.imageio.spi.ImageWriterSpi; | ||
| 58 | |||
| 59 | public class ImageUtil { | ||
| 60 | /* XXX testing only | ||
| 61 | public static void main(String[] args) { | ||
| 62 | ImageTypeSpecifier bilevel = | ||
| 63 | ImageTypeSpecifier.createIndexed(new byte[] {(byte)0, (byte)255}, | ||
| 64 | new byte[] {(byte)0, (byte)255}, | ||
| 65 | new byte[] {(byte)0, (byte)255}, | ||
| 66 | null, 1, | ||
| 67 | DataBuffer.TYPE_BYTE); | ||
| 68 | ImageTypeSpecifier gray = | ||
| 69 | ImageTypeSpecifier.createGrayscale(8, DataBuffer.TYPE_BYTE, false); | ||
| 70 | ImageTypeSpecifier grayAlpha = | ||
| 71 | ImageTypeSpecifier.createGrayscale(8, DataBuffer.TYPE_BYTE, false, | ||
| 72 | false); | ||
| 73 | ImageTypeSpecifier rgb = | ||
| 74 | ImageTypeSpecifier.createInterleaved(ColorSpace.getInstance(ColorSpace.CS_sRGB), | ||
| 75 | new int[] {0, 1, 2}, | ||
| 76 | DataBuffer.TYPE_BYTE, | ||
| 77 | false, | ||
| 78 | false); | ||
| 79 | ImageTypeSpecifier rgba = | ||
| 80 | ImageTypeSpecifier.createInterleaved(ColorSpace.getInstance(ColorSpace.CS_sRGB), | ||
| 81 | new int[] {0, 1, 2, 3}, | ||
| 82 | DataBuffer.TYPE_BYTE, | ||
| 83 | true, | ||
| 84 | false); | ||
| 85 | ImageTypeSpecifier packed = | ||
| 86 | ImageTypeSpecifier.createPacked(ColorSpace.getInstance(ColorSpace.CS_sRGB), | ||
| 87 | 0xff000000, | ||
| 88 | 0x00ff0000, | ||
| 89 | 0x0000ff00, | ||
| 90 | 0x000000ff, | ||
| 91 | DataBuffer.TYPE_BYTE, | ||
| 92 | false); | ||
| 93 | |||
| 94 | SampleModel bandedSM = | ||
| 95 | new java.awt.image.BandedSampleModel(DataBuffer.TYPE_BYTE, | ||
| 96 | 1, 1, 15); | ||
| 97 | |||
| 98 | System.out.println(createColorModel(bilevel.getSampleModel())); | ||
| 99 | System.out.println(createColorModel(gray.getSampleModel())); | ||
| 100 | System.out.println(createColorModel(grayAlpha.getSampleModel())); | ||
| 101 | System.out.println(createColorModel(rgb.getSampleModel())); | ||
| 102 | System.out.println(createColorModel(rgba.getSampleModel())); | ||
| 103 | System.out.println(createColorModel(packed.getSampleModel())); | ||
| 104 | System.out.println(createColorModel(bandedSM)); | ||
| 105 | } | ||
| 106 | */ | ||
| 107 | |||
| 108 | /** | ||
| 109 | * Creates a <code>ColorModel</code> that may be used with the | ||
| 110 | * specified <code>SampleModel</code>. If a suitable | ||
| 111 | * <code>ColorModel</code> cannot be found, this method returns | ||
| 112 | * <code>null</code>. | ||
| 113 | * | ||
| 114 | * <p> Suitable <code>ColorModel</code>s are guaranteed to exist | ||
| 115 | * for all instances of <code>ComponentSampleModel</code>. | ||
| 116 | * For 1- and 3- banded <code>SampleModel</code>s, the returned | ||
| 117 | * <code>ColorModel</code> will be opaque. For 2- and 4-banded | ||
| 118 | * <code>SampleModel</code>s, the output will use alpha transparency | ||
| 119 | * which is not premultiplied. 1- and 2-banded data will use a | ||
| 120 | * grayscale <code>ColorSpace</code>, and 3- and 4-banded data a sRGB | ||
| 121 | * <code>ColorSpace</code>. Data with 5 or more bands will have a | ||
| 122 | * <code>BogusColorSpace</code>.</p> | ||
| 123 | * | ||
| 124 | * <p>An instance of <code>DirectColorModel</code> will be created for | ||
| 125 | * instances of <code>SinglePixelPackedSampleModel</code> with no more | ||
| 126 | * than 4 bands.</p> | ||
| 127 | * | ||
| 128 | * <p>An instance of <code>IndexColorModel</code> will be created for | ||
| 129 | * instances of <code>MultiPixelPackedSampleModel</code>. The colormap | ||
| 130 | * will be a grayscale ramp with <code>1 << numberOfBits</code> | ||
| 131 | * entries ranging from zero to at most 255.</p> | ||
| 132 | * | ||
| 133 | * @return An instance of <code>ColorModel</code> that is suitable for | ||
| 134 | * the supplied <code>SampleModel</code>, or <code>null</code>. | ||
| 135 | * | ||
| 136 | * @throws IllegalArgumentException If <code>sampleModel</code> is | ||
| 137 | * <code>null</code>. | ||
| 138 | */ | ||
| 139 | public static final ColorModel createColorModel(SampleModel sampleModel) { | ||
| 140 | // Check the parameter. | ||
| 141 | if(sampleModel == null) { | ||
| 142 | throw new IllegalArgumentException("sampleModel == null!"); | ||
| 143 | } | ||
| 144 | |||
| 145 | // Get the data type. | ||
| 146 | int dataType = sampleModel.getDataType(); | ||
| 147 | |||
| 148 | // Check the data type | ||
| 149 | switch(dataType) { | ||
| 150 | case DataBuffer.TYPE_BYTE: | ||
| 151 | case DataBuffer.TYPE_USHORT: | ||
| 152 | case DataBuffer.TYPE_SHORT: | ||
| 153 | case DataBuffer.TYPE_INT: | ||
| 154 | case DataBuffer.TYPE_FLOAT: | ||
| 155 | case DataBuffer.TYPE_DOUBLE: | ||
| 156 | break; | ||
| 157 | default: | ||
| 158 | // Return null for other types. | ||
| 159 | return null; | ||
| 160 | } | ||
| 161 | |||
| 162 | // The return variable. | ||
| 163 | ColorModel colorModel = null; | ||
| 164 | |||
| 165 | // Get the sample size. | ||
| 166 | int[] sampleSize = sampleModel.getSampleSize(); | ||
| 167 | |||
| 168 | // Create a Component ColorModel. | ||
| 169 | if(sampleModel instanceof ComponentSampleModel) { | ||
| 170 | // Get the number of bands. | ||
| 171 | int numBands = sampleModel.getNumBands(); | ||
| 172 | |||
| 173 | // Determine the color space. | ||
| 174 | ColorSpace colorSpace = null; | ||
| 175 | if(numBands <= 2) { | ||
| 176 | colorSpace = ColorSpace.getInstance(ColorSpace.CS_GRAY); | ||
| 177 | } else if(numBands <= 4) { | ||
| 178 | colorSpace = ColorSpace.getInstance(ColorSpace.CS_sRGB); | ||
| 179 | } else { | ||
| 180 | colorSpace = new BogusColorSpace(numBands); | ||
| 181 | } | ||
| 182 | |||
| 183 | boolean hasAlpha = (numBands == 2) || (numBands == 4); | ||
| 184 | boolean isAlphaPremultiplied = false; | ||
| 185 | int transparency = hasAlpha ? | ||
| 186 | Transparency.TRANSLUCENT : Transparency.OPAQUE; | ||
| 187 | |||
| 188 | colorModel = new ComponentColorModel(colorSpace, | ||
| 189 | sampleSize, | ||
| 190 | hasAlpha, | ||
| 191 | isAlphaPremultiplied, | ||
| 192 | transparency, | ||
| 193 | dataType); | ||
| 194 | } else if (sampleModel.getNumBands() <= 4 && | ||
| 195 | sampleModel instanceof SinglePixelPackedSampleModel) { | ||
| 196 | SinglePixelPackedSampleModel sppsm = | ||
| 197 | (SinglePixelPackedSampleModel)sampleModel; | ||
| 198 | |||
| 199 | int[] bitMasks = sppsm.getBitMasks(); | ||
| 200 | int rmask = 0; | ||
| 201 | int gmask = 0; | ||
| 202 | int bmask = 0; | ||
| 203 | int amask = 0; | ||
| 204 | |||
| 205 | int numBands = bitMasks.length; | ||
| 206 | if (numBands <= 2) { | ||
| 207 | rmask = gmask = bmask = bitMasks[0]; | ||
| 208 | if (numBands == 2) { | ||
| 209 | amask = bitMasks[1]; | ||
| 210 | } | ||
| 211 | } else { | ||
| 212 | rmask = bitMasks[0]; | ||
| 213 | gmask = bitMasks[1]; | ||
| 214 | bmask = bitMasks[2]; | ||
| 215 | if (numBands == 4) { | ||
| 216 | amask = bitMasks[3]; | ||
| 217 | } | ||
| 218 | } | ||
| 219 | |||
| 220 | int bits = 0; | ||
| 221 | for (int i = 0; i < sampleSize.length; i++) { | ||
| 222 | bits += sampleSize[i]; | ||
| 223 | } | ||
| 224 | |||
| 225 | return new DirectColorModel(bits, rmask, gmask, bmask, amask); | ||
| 226 | |||
| 227 | } else if(sampleModel instanceof MultiPixelPackedSampleModel) { | ||
| 228 | // Load the colormap with a ramp. | ||
| 229 | int bitsPerSample = sampleSize[0]; | ||
| 230 | int numEntries = 1 << bitsPerSample; | ||
| 231 | byte[] map = new byte[numEntries]; | ||
| 232 | for (int i = 0; i < numEntries; i++) { | ||
| 233 | map[i] = (byte)(i*255/(numEntries - 1)); | ||
| 234 | } | ||
| 235 | |||
| 236 | colorModel = new IndexColorModel(bitsPerSample, numEntries, | ||
| 237 | map, map, map); | ||
| 238 | |||
| 239 | } | ||
| 240 | |||
| 241 | return colorModel; | ||
| 242 | } | ||
| 243 | |||
| 244 | /** | ||
| 245 | * For the case of binary data (<code>isBinary()</code> returns | ||
| 246 | * <code>true</code>), return the binary data as a packed byte array. | ||
| 247 | * The data will be packed as eight bits per byte with no bit offset, | ||
| 248 | * i.e., the first bit in each image line will be the left-most of the | ||
| 249 | * first byte of the line. The line stride in bytes will be | ||
| 250 | * <code>(int)((getWidth()+7)/8)</code>. The length of the returned | ||
| 251 | * array will be the line stride multiplied by <code>getHeight()</code> | ||
| 252 | * | ||
| 253 | * @return the binary data as a packed array of bytes with zero offset | ||
| 254 | * of <code>null</code> if the data are not binary. | ||
| 255 | * @throws IllegalArgumentException if <code>isBinary()</code> returns | ||
| 256 | * <code>false</code> with the <code>SampleModel</code> of the | ||
| 257 | * supplied <code>Raster</code> as argument. | ||
| 258 | */ | ||
| 259 | public static byte[] getPackedBinaryData(Raster raster, | ||
| 260 | Rectangle rect) { | ||
| 261 | SampleModel sm = raster.getSampleModel(); | ||
| 262 | if(!isBinary(sm)) { | ||
| 263 | throw new IllegalArgumentException(I18N.getString("ImageUtil0")); | ||
| 264 | } | ||
| 265 | |||
| 266 | int rectX = rect.x; | ||
| 267 | int rectY = rect.y; | ||
| 268 | int rectWidth = rect.width; | ||
| 269 | int rectHeight = rect.height; | ||
| 270 | |||
| 271 | DataBuffer dataBuffer = raster.getDataBuffer(); | ||
| 272 | |||
| 273 | int dx = rectX - raster.getSampleModelTranslateX(); | ||
| 274 | int dy = rectY - raster.getSampleModelTranslateY(); | ||
| 275 | |||
| 276 | MultiPixelPackedSampleModel mpp = (MultiPixelPackedSampleModel)sm; | ||
| 277 | int lineStride = mpp.getScanlineStride(); | ||
| 278 | int eltOffset = dataBuffer.getOffset() + mpp.getOffset(dx, dy); | ||
| 279 | int bitOffset = mpp.getBitOffset(dx); | ||
| 280 | |||
| 281 | int numBytesPerRow = (rectWidth + 7)/8; | ||
| 282 | if(dataBuffer instanceof DataBufferByte && | ||
| 283 | eltOffset == 0 && bitOffset == 0 && | ||
| 284 | numBytesPerRow == lineStride && | ||
| 285 | ((DataBufferByte)dataBuffer).getData().length == | ||
| 286 | numBytesPerRow*rectHeight) { | ||
| 287 | return ((DataBufferByte)dataBuffer).getData(); | ||
| 288 | } | ||
| 289 | |||
| 290 | byte[] binaryDataArray = new byte[numBytesPerRow*rectHeight]; | ||
| 291 | |||
| 292 | int b = 0; | ||
| 293 | |||
| 294 | if(bitOffset == 0) { | ||
| 295 | if(dataBuffer instanceof DataBufferByte) { | ||
| 296 | byte[] data = ((DataBufferByte)dataBuffer).getData(); | ||
| 297 | int stride = numBytesPerRow; | ||
| 298 | int offset = 0; | ||
| 299 | for(int y = 0; y < rectHeight; y++) { | ||
| 300 | System.arraycopy(data, eltOffset, | ||
| 301 | binaryDataArray, offset, | ||
| 302 | stride); | ||
| 303 | offset += stride; | ||
| 304 | eltOffset += lineStride; | ||
| 305 | } | ||
| 306 | } else if(dataBuffer instanceof DataBufferShort || | ||
| 307 | dataBuffer instanceof DataBufferUShort) { | ||
| 308 | short[] data = dataBuffer instanceof DataBufferShort ? | ||
| 309 | ((DataBufferShort)dataBuffer).getData() : | ||
| 310 | ((DataBufferUShort)dataBuffer).getData(); | ||
| 311 | |||
| 312 | for(int y = 0; y < rectHeight; y++) { | ||
| 313 | int xRemaining = rectWidth; | ||
| 314 | int i = eltOffset; | ||
| 315 | while(xRemaining > 8) { | ||
| 316 | short datum = data[i++]; | ||
| 317 | binaryDataArray[b++] = (byte)((datum >>> 8) & 0xFF); | ||
| 318 | binaryDataArray[b++] = (byte)(datum & 0xFF); | ||
| 319 | xRemaining -= 16; | ||
| 320 | } | ||
| 321 | if(xRemaining > 0) { | ||
| 322 | binaryDataArray[b++] = (byte)((data[i] >>> 8) & 0XFF); | ||
| 323 | } | ||
| 324 | eltOffset += lineStride; | ||
| 325 | } | ||
| 326 | } else if(dataBuffer instanceof DataBufferInt) { | ||
| 327 | int[] data = ((DataBufferInt)dataBuffer).getData(); | ||
| 328 | |||
| 329 | for(int y = 0; y < rectHeight; y++) { | ||
| 330 | int xRemaining = rectWidth; | ||
| 331 | int i = eltOffset; | ||
| 332 | while(xRemaining > 24) { | ||
| 333 | int datum = data[i++]; | ||
| 334 | binaryDataArray[b++] = (byte)((datum >>> 24) & 0xFF); | ||
| 335 | binaryDataArray[b++] = (byte)((datum >>> 16) & 0xFF); | ||
| 336 | binaryDataArray[b++] = (byte)((datum >>> 8) & 0xFF); | ||
| 337 | binaryDataArray[b++] = (byte)(datum & 0xFF); | ||
| 338 | xRemaining -= 32; | ||
| 339 | } | ||
| 340 | int shift = 24; | ||
| 341 | while(xRemaining > 0) { | ||
| 342 | binaryDataArray[b++] = | ||
| 343 | (byte)((data[i] >>> shift) & 0xFF); | ||
| 344 | shift -= 8; | ||
| 345 | xRemaining -= 8; | ||
| 346 | } | ||
| 347 | eltOffset += lineStride; | ||
| 348 | } | ||
| 349 | } | ||
| 350 | } else { // bitOffset != 0 | ||
| 351 | if(dataBuffer instanceof DataBufferByte) { | ||
| 352 | byte[] data = ((DataBufferByte)dataBuffer).getData(); | ||
| 353 | |||
| 354 | if((bitOffset & 7) == 0) { | ||
| 355 | int stride = numBytesPerRow; | ||
| 356 | int offset = 0; | ||
| 357 | for(int y = 0; y < rectHeight; y++) { | ||
| 358 | System.arraycopy(data, eltOffset, | ||
| 359 | binaryDataArray, offset, | ||
| 360 | stride); | ||
| 361 | offset += stride; | ||
| 362 | eltOffset += lineStride; | ||
| 363 | } | ||
| 364 | } else { // bitOffset % 8 != 0 | ||
| 365 | int leftShift = bitOffset & 7; | ||
| 366 | int rightShift = 8 - leftShift; | ||
| 367 | for(int y = 0; y < rectHeight; y++) { | ||
| 368 | int i = eltOffset; | ||
| 369 | int xRemaining = rectWidth; | ||
| 370 | while(xRemaining > 0) { | ||
| 371 | if(xRemaining > rightShift) { | ||
| 372 | binaryDataArray[b++] = | ||
| 373 | (byte)(((data[i++]&0xFF) << leftShift) | | ||
| 374 | ((data[i]&0xFF) >>> rightShift)); | ||
| 375 | } else { | ||
| 376 | binaryDataArray[b++] = | ||
| 377 | (byte)((data[i]&0xFF) << leftShift); | ||
| 378 | } | ||
| 379 | xRemaining -= 8; | ||
| 380 | } | ||
| 381 | eltOffset += lineStride; | ||
| 382 | } | ||
| 383 | } | ||
| 384 | } else if(dataBuffer instanceof DataBufferShort || | ||
| 385 | dataBuffer instanceof DataBufferUShort) { | ||
| 386 | short[] data = dataBuffer instanceof DataBufferShort ? | ||
| 387 | ((DataBufferShort)dataBuffer).getData() : | ||
| 388 | ((DataBufferUShort)dataBuffer).getData(); | ||
| 389 | |||
| 390 | for(int y = 0; y < rectHeight; y++) { | ||
| 391 | int bOffset = bitOffset; | ||
| 392 | for(int x = 0; x < rectWidth; x += 8, bOffset += 8) { | ||
| 393 | int i = eltOffset + bOffset/16; | ||
| 394 | int mod = bOffset % 16; | ||
| 395 | int left = data[i] & 0xFFFF; | ||
| 396 | if(mod <= 8) { | ||
| 397 | binaryDataArray[b++] = (byte)(left >>> (8 - mod)); | ||
| 398 | } else { | ||
| 399 | int delta = mod - 8; | ||
| 400 | int right = data[i+1] & 0xFFFF; | ||
| 401 | binaryDataArray[b++] = | ||
| 402 | (byte)((left << delta) | | ||
| 403 | (right >>> (16 - delta))); | ||
| 404 | } | ||
| 405 | } | ||
| 406 | eltOffset += lineStride; | ||
| 407 | } | ||
| 408 | } else if(dataBuffer instanceof DataBufferInt) { | ||
| 409 | int[] data = ((DataBufferInt)dataBuffer).getData(); | ||
| 410 | |||
| 411 | for(int y = 0; y < rectHeight; y++) { | ||
| 412 | int bOffset = bitOffset; | ||
| 413 | for(int x = 0; x < rectWidth; x += 8, bOffset += 8) { | ||
| 414 | int i = eltOffset + bOffset/32; | ||
| 415 | int mod = bOffset % 32; | ||
| 416 | int left = data[i]; | ||
| 417 | if(mod <= 24) { | ||
| 418 | binaryDataArray[b++] = | ||
| 419 | (byte)(left >>> (24 - mod)); | ||
| 420 | } else { | ||
| 421 | int delta = mod - 24; | ||
| 422 | int right = data[i+1]; | ||
| 423 | binaryDataArray[b++] = | ||
| 424 | (byte)((left << delta) | | ||
| 425 | (right >>> (32 - delta))); | ||
| 426 | } | ||
| 427 | } | ||
| 428 | eltOffset += lineStride; | ||
| 429 | } | ||
| 430 | } | ||
| 431 | } | ||
| 432 | |||
| 433 | return binaryDataArray; | ||
| 434 | } | ||
| 435 | |||
| 436 | /** | ||
| 437 | * Returns the binary data unpacked into an array of bytes. | ||
| 438 | * The line stride will be the width of the <code>Raster</code>. | ||
| 439 | * | ||
| 440 | * @throws IllegalArgumentException if <code>isBinary()</code> returns | ||
| 441 | * <code>false</code> with the <code>SampleModel</code> of the | ||
| 442 | * supplied <code>Raster</code> as argument. | ||
| 443 | */ | ||
| 444 | public static byte[] getUnpackedBinaryData(Raster raster, | ||
| 445 | Rectangle rect) { | ||
| 446 | SampleModel sm = raster.getSampleModel(); | ||
| 447 | if(!isBinary(sm)) { | ||
| 448 | throw new IllegalArgumentException(I18N.getString("ImageUtil0")); | ||
| 449 | } | ||
| 450 | |||
| 451 | int rectX = rect.x; | ||
| 452 | int rectY = rect.y; | ||
| 453 | int rectWidth = rect.width; | ||
| 454 | int rectHeight = rect.height; | ||
| 455 | |||
| 456 | DataBuffer dataBuffer = raster.getDataBuffer(); | ||
| 457 | |||
| 458 | int dx = rectX - raster.getSampleModelTranslateX(); | ||
| 459 | int dy = rectY - raster.getSampleModelTranslateY(); | ||
| 460 | |||
| 461 | MultiPixelPackedSampleModel mpp = (MultiPixelPackedSampleModel)sm; | ||
| 462 | int lineStride = mpp.getScanlineStride(); | ||
| 463 | int eltOffset = dataBuffer.getOffset() + mpp.getOffset(dx, dy); | ||
| 464 | int bitOffset = mpp.getBitOffset(dx); | ||
| 465 | |||
| 466 | byte[] bdata = new byte[rectWidth*rectHeight]; | ||
| 467 | int maxY = rectY + rectHeight; | ||
| 468 | int maxX = rectX + rectWidth; | ||
| 469 | int k = 0; | ||
| 470 | |||
| 471 | if(dataBuffer instanceof DataBufferByte) { | ||
| 472 | byte[] data = ((DataBufferByte)dataBuffer).getData(); | ||
| 473 | for(int y = rectY; y < maxY; y++) { | ||
| 474 | int bOffset = eltOffset*8 + bitOffset; | ||
| 475 | for(int x = rectX; x < maxX; x++) { | ||
| 476 | byte b = data[bOffset/8]; | ||
| 477 | bdata[k++] = | ||
| 478 | (byte)((b >>> (7 - bOffset & 7)) & 0x0000001); | ||
| 479 | bOffset++; | ||
| 480 | } | ||
| 481 | eltOffset += lineStride; | ||
| 482 | } | ||
| 483 | } else if(dataBuffer instanceof DataBufferShort || | ||
| 484 | dataBuffer instanceof DataBufferUShort) { | ||
| 485 | short[] data = dataBuffer instanceof DataBufferShort ? | ||
| 486 | ((DataBufferShort)dataBuffer).getData() : | ||
| 487 | ((DataBufferUShort)dataBuffer).getData(); | ||
| 488 | for(int y = rectY; y < maxY; y++) { | ||
| 489 | int bOffset = eltOffset*16 + bitOffset; | ||
| 490 | for(int x = rectX; x < maxX; x++) { | ||
| 491 | short s = data[bOffset/16]; | ||
| 492 | bdata[k++] = | ||
| 493 | (byte)((s >>> (15 - bOffset % 16)) & | ||
| 494 | 0x0000001); | ||
| 495 | bOffset++; | ||
| 496 | } | ||
| 497 | eltOffset += lineStride; | ||
| 498 | } | ||
| 499 | } else if(dataBuffer instanceof DataBufferInt) { | ||
| 500 | int[] data = ((DataBufferInt)dataBuffer).getData(); | ||
| 501 | for(int y = rectY; y < maxY; y++) { | ||
| 502 | int bOffset = eltOffset*32 + bitOffset; | ||
| 503 | for(int x = rectX; x < maxX; x++) { | ||
| 504 | int i = data[bOffset/32]; | ||
| 505 | bdata[k++] = | ||
| 506 | (byte)((i >>> (31 - bOffset % 32)) & | ||
| 507 | 0x0000001); | ||
| 508 | bOffset++; | ||
| 509 | } | ||
| 510 | eltOffset += lineStride; | ||
| 511 | } | ||
| 512 | } | ||
| 513 | |||
| 514 | return bdata; | ||
| 515 | } | ||
| 516 | |||
| 517 | /** | ||
| 518 | * Sets the supplied <code>Raster</code>'s data from an array | ||
| 519 | * of packed binary data of the form returned by | ||
| 520 | * <code>getPackedBinaryData()</code>. | ||
| 521 | * | ||
| 522 | * @throws IllegalArgumentException if <code>isBinary()</code> returns | ||
| 523 | * <code>false</code> with the <code>SampleModel</code> of the | ||
| 524 | * supplied <code>Raster</code> as argument. | ||
| 525 | */ | ||
| 526 | public static void setPackedBinaryData(byte[] binaryDataArray, | ||
| 527 | WritableRaster raster, | ||
| 528 | Rectangle rect) { | ||
| 529 | SampleModel sm = raster.getSampleModel(); | ||
| 530 | if(!isBinary(sm)) { | ||
| 531 | throw new IllegalArgumentException(I18N.getString("ImageUtil0")); | ||
| 532 | } | ||
| 533 | |||
| 534 | int rectX = rect.x; | ||
| 535 | int rectY = rect.y; | ||
| 536 | int rectWidth = rect.width; | ||
| 537 | int rectHeight = rect.height; | ||
| 538 | |||
| 539 | DataBuffer dataBuffer = raster.getDataBuffer(); | ||
| 540 | |||
| 541 | int dx = rectX - raster.getSampleModelTranslateX(); | ||
| 542 | int dy = rectY - raster.getSampleModelTranslateY(); | ||
| 543 | |||
| 544 | MultiPixelPackedSampleModel mpp = (MultiPixelPackedSampleModel)sm; | ||
| 545 | int lineStride = mpp.getScanlineStride(); | ||
| 546 | int eltOffset = dataBuffer.getOffset() + mpp.getOffset(dx, dy); | ||
| 547 | int bitOffset = mpp.getBitOffset(dx); | ||
| 548 | |||
| 549 | int b = 0; | ||
| 550 | |||
| 551 | if(bitOffset == 0) { | ||
| 552 | if(dataBuffer instanceof DataBufferByte) { | ||
| 553 | byte[] data = ((DataBufferByte)dataBuffer).getData(); | ||
| 554 | if(data == binaryDataArray) { | ||
| 555 | // Optimal case: simply return. | ||
| 556 | return; | ||
| 557 | } | ||
| 558 | int stride = (rectWidth + 7)/8; | ||
| 559 | int offset = 0; | ||
| 560 | for(int y = 0; y < rectHeight; y++) { | ||
| 561 | System.arraycopy(binaryDataArray, offset, | ||
| 562 | data, eltOffset, | ||
| 563 | stride); | ||
| 564 | offset += stride; | ||
| 565 | eltOffset += lineStride; | ||
| 566 | } | ||
| 567 | } else if(dataBuffer instanceof DataBufferShort || | ||
| 568 | dataBuffer instanceof DataBufferUShort) { | ||
| 569 | short[] data = dataBuffer instanceof DataBufferShort ? | ||
| 570 | ((DataBufferShort)dataBuffer).getData() : | ||
| 571 | ((DataBufferUShort)dataBuffer).getData(); | ||
| 572 | |||
| 573 | for(int y = 0; y < rectHeight; y++) { | ||
| 574 | int xRemaining = rectWidth; | ||
| 575 | int i = eltOffset; | ||
| 576 | while(xRemaining > 8) { | ||
| 577 | data[i++] = | ||
| 578 | (short)(((binaryDataArray[b++] & 0xFF) << 8) | | ||
| 579 | (binaryDataArray[b++] & 0xFF)); | ||
| 580 | xRemaining -= 16; | ||
| 581 | } | ||
| 582 | if(xRemaining > 0) { | ||
| 583 | data[i++] = | ||
| 584 | (short)((binaryDataArray[b++] & 0xFF) << 8); | ||
| 585 | } | ||
| 586 | eltOffset += lineStride; | ||
| 587 | } | ||
| 588 | } else if(dataBuffer instanceof DataBufferInt) { | ||
| 589 | int[] data = ((DataBufferInt)dataBuffer).getData(); | ||
| 590 | |||
| 591 | for(int y = 0; y < rectHeight; y++) { | ||
| 592 | int xRemaining = rectWidth; | ||
| 593 | int i = eltOffset; | ||
| 594 | while(xRemaining > 24) { | ||
| 595 | data[i++] = | ||
| 596 | (int)(((binaryDataArray[b++] & 0xFF) << 24) | | ||
| 597 | ((binaryDataArray[b++] & 0xFF) << 16) | | ||
| 598 | ((binaryDataArray[b++] & 0xFF) << 8) | | ||
| 599 | (binaryDataArray[b++] & 0xFF)); | ||
| 600 | xRemaining -= 32; | ||
| 601 | } | ||
| 602 | int shift = 24; | ||
| 603 | while(xRemaining > 0) { | ||
| 604 | data[i] |= | ||
| 605 | (int)((binaryDataArray[b++] & 0xFF) << shift); | ||
| 606 | shift -= 8; | ||
| 607 | xRemaining -= 8; | ||
| 608 | } | ||
| 609 | eltOffset += lineStride; | ||
| 610 | } | ||
| 611 | } | ||
| 612 | } else { // bitOffset != 0 | ||
| 613 | int stride = (rectWidth + 7)/8; | ||
| 614 | int offset = 0; | ||
| 615 | if(dataBuffer instanceof DataBufferByte) { | ||
| 616 | byte[] data = ((DataBufferByte)dataBuffer).getData(); | ||
| 617 | |||
| 618 | if((bitOffset & 7) == 0) { | ||
| 619 | for(int y = 0; y < rectHeight; y++) { | ||
| 620 | System.arraycopy(binaryDataArray, offset, | ||
| 621 | data, eltOffset, | ||
| 622 | stride); | ||
| 623 | offset += stride; | ||
| 624 | eltOffset += lineStride; | ||
| 625 | } | ||
| 626 | } else { // bitOffset % 8 != 0 | ||
| 627 | int rightShift = bitOffset & 7; | ||
| 628 | int leftShift = 8 - rightShift; | ||
| 629 | int leftShift8 = 8 + leftShift; | ||
| 630 | int mask = (byte)(255<<leftShift); | ||
| 631 | int mask1 = (byte)~mask; | ||
| 632 | |||
| 633 | for(int y = 0; y < rectHeight; y++) { | ||
| 634 | int i = eltOffset; | ||
| 635 | int xRemaining = rectWidth; | ||
| 636 | while(xRemaining > 0) { | ||
| 637 | byte datum = binaryDataArray[b++]; | ||
| 638 | |||
| 639 | if (xRemaining > leftShift8) { | ||
| 640 | // when all the bits in this BYTE will be set | ||
| 641 | // into the data buffer. | ||
| 642 | data[i] = (byte)((data[i] & mask ) | | ||
| 643 | ((datum&0xFF) >>> rightShift)); | ||
| 644 | data[++i] = (byte)((datum & 0xFF) << leftShift); | ||
| 645 | } else if (xRemaining > leftShift) { | ||
| 646 | // All the "leftShift" high bits will be set | ||
| 647 | // into the data buffer. But not all the | ||
| 648 | // "rightShift" low bits will be set. | ||
| 649 | data[i] = (byte)((data[i] & mask ) | | ||
| 650 | ((datum&0xFF) >>> rightShift)); | ||
| 651 | i++; | ||
| 652 | data[i] = | ||
| 653 | (byte)((data[i] & mask1) | ((datum & 0xFF) << leftShift)); | ||
| 654 | } | ||
| 655 | else { | ||
| 656 | // Less than "leftShift" high bits will be set. | ||
| 657 | int remainMask = (1 << leftShift - xRemaining) - 1; | ||
| 658 | data[i] = | ||
| 659 | (byte)((data[i] & (mask | remainMask)) | | ||
| 660 | (datum&0xFF) >>> rightShift & ~remainMask); | ||
| 661 | } | ||
| 662 | xRemaining -= 8; | ||
| 663 | } | ||
| 664 | eltOffset += lineStride; | ||
| 665 | } | ||
| 666 | } | ||
| 667 | } else if(dataBuffer instanceof DataBufferShort || | ||
| 668 | dataBuffer instanceof DataBufferUShort) { | ||
| 669 | short[] data = dataBuffer instanceof DataBufferShort ? | ||
| 670 | ((DataBufferShort)dataBuffer).getData() : | ||
| 671 | ((DataBufferUShort)dataBuffer).getData(); | ||
| 672 | |||
| 673 | int rightShift = bitOffset & 7; | ||
| 674 | int leftShift = 8 - rightShift; | ||
| 675 | int leftShift16 = 16 + leftShift; | ||
| 676 | int mask = (short)(~(255 << leftShift)); | ||
| 677 | int mask1 = (short)(65535 << leftShift); | ||
| 678 | int mask2 = (short)~mask1; | ||
| 679 | |||
| 680 | for(int y = 0; y < rectHeight; y++) { | ||
| 681 | int bOffset = bitOffset; | ||
| 682 | int xRemaining = rectWidth; | ||
| 683 | for(int x = 0; x < rectWidth; | ||
| 684 | x += 8, bOffset += 8, xRemaining -= 8) { | ||
| 685 | int i = eltOffset + (bOffset >> 4); | ||
| 686 | int mod = bOffset & 15; | ||
| 687 | int datum = binaryDataArray[b++] & 0xFF; | ||
| 688 | if(mod <= 8) { | ||
| 689 | // This BYTE is set into one SHORT | ||
| 690 | if (xRemaining < 8) { | ||
| 691 | // Mask the bits to be set. | ||
| 692 | datum &= 255 << 8 - xRemaining; | ||
| 693 | } | ||
| 694 | data[i] = (short)((data[i] & mask) | (datum << leftShift)); | ||
| 695 | } else if (xRemaining > leftShift16) { | ||
| 696 | // This BYTE will be set into two SHORTs | ||
| 697 | data[i] = (short)((data[i] & mask1) | ((datum >>> rightShift)&0xFFFF)); | ||
| 698 | data[++i] = | ||
| 699 | (short)((datum << leftShift)&0xFFFF); | ||
| 700 | } else if (xRemaining > leftShift) { | ||
| 701 | // This BYTE will be set into two SHORTs; | ||
| 702 | // But not all the low bits will be set into SHORT | ||
| 703 | data[i] = (short)((data[i] & mask1) | ((datum >>> rightShift)&0xFFFF)); | ||
| 704 | i++; | ||
| 705 | data[i] = | ||
| 706 | (short)((data[i] & mask2) | ((datum << leftShift)&0xFFFF)); | ||
| 707 | } else { | ||
| 708 | // Only some of the high bits will be set into | ||
| 709 | // SHORTs | ||
| 710 | int remainMask = (1 << leftShift - xRemaining) - 1; | ||
| 711 | data[i] = (short)((data[i] & (mask1 | remainMask)) | | ||
| 712 | ((datum >>> rightShift)&0xFFFF & ~remainMask)); | ||
| 713 | } | ||
| 714 | } | ||
| 715 | eltOffset += lineStride; | ||
| 716 | } | ||
| 717 | } else if(dataBuffer instanceof DataBufferInt) { | ||
| 718 | int[] data = ((DataBufferInt)dataBuffer).getData(); | ||
| 719 | int rightShift = bitOffset & 7; | ||
| 720 | int leftShift = 8 - rightShift; | ||
| 721 | int leftShift32 = 32 + leftShift; | ||
| 722 | int mask = 0xFFFFFFFF << leftShift; | ||
| 723 | int mask1 = ~mask; | ||
| 724 | |||
| 725 | for(int y = 0; y < rectHeight; y++) { | ||
| 726 | int bOffset = bitOffset; | ||
| 727 | int xRemaining = rectWidth; | ||
| 728 | for(int x = 0; x < rectWidth; | ||
| 729 | x += 8, bOffset += 8, xRemaining -= 8) { | ||
| 730 | int i = eltOffset + (bOffset >> 5); | ||
| 731 | int mod = bOffset & 31; | ||
| 732 | int datum = binaryDataArray[b++] & 0xFF; | ||
| 733 | if(mod <= 24) { | ||
| 734 | // This BYTE is set into one INT | ||
| 735 | int shift = 24 - mod; | ||
| 736 | if (xRemaining < 8) { | ||
| 737 | // Mask the bits to be set. | ||
| 738 | datum &= 255 << 8 - xRemaining; | ||
| 739 | } | ||
| 740 | data[i] = (data[i] & (~(255 << shift))) | (datum << shift); | ||
| 741 | } else if (xRemaining > leftShift32) { | ||
| 742 | // All the bits of this BYTE will be set into two INTs | ||
| 743 | data[i] = (data[i] & mask) | (datum >>> rightShift); | ||
| 744 | data[++i] = datum << leftShift; | ||
| 745 | } else if (xRemaining > leftShift) { | ||
| 746 | // This BYTE will be set into two INTs; | ||
| 747 | // But not all the low bits will be set into INT | ||
| 748 | data[i] = (data[i] & mask) | (datum >>> rightShift); | ||
| 749 | i++; | ||
| 750 | data[i] = (data[i] & mask1) | (datum << leftShift); | ||
| 751 | } else { | ||
| 752 | // Only some of the high bits will be set into INT | ||
| 753 | int remainMask = (1 << leftShift - xRemaining) - 1; | ||
| 754 | data[i] = (data[i] & (mask | remainMask)) | | ||
| 755 | (datum >>> rightShift & ~remainMask); | ||
| 756 | } | ||
| 757 | } | ||
| 758 | eltOffset += lineStride; | ||
| 759 | } | ||
| 760 | } | ||
| 761 | } | ||
| 762 | } | ||
| 763 | |||
| 764 | /** | ||
| 765 | * Copies data into the packed array of the <code>Raster</code> | ||
| 766 | * from an array of unpacked data of the form returned by | ||
| 767 | * <code>getUnpackedBinaryData()</code>. | ||
| 768 | * | ||
| 769 | * <p> If the data are binary, then the target bit will be set if | ||
| 770 | * and only if the corresponding byte is non-zero. | ||
| 771 | * | ||
| 772 | * @throws IllegalArgumentException if <code>isBinary()</code> returns | ||
| 773 | * <code>false</code> with the <code>SampleModel</code> of the | ||
| 774 | * supplied <code>Raster</code> as argument. | ||
| 775 | */ | ||
| 776 | public static void setUnpackedBinaryData(byte[] bdata, | ||
| 777 | WritableRaster raster, | ||
| 778 | Rectangle rect) { | ||
| 779 | SampleModel sm = raster.getSampleModel(); | ||
| 780 | if(!isBinary(sm)) { | ||
| 781 | throw new IllegalArgumentException(I18N.getString("ImageUtil0")); | ||
| 782 | } | ||
| 783 | |||
| 784 | int rectX = rect.x; | ||
| 785 | int rectY = rect.y; | ||
| 786 | int rectWidth = rect.width; | ||
| 787 | int rectHeight = rect.height; | ||
| 788 | |||
| 789 | DataBuffer dataBuffer = raster.getDataBuffer(); | ||
| 790 | |||
| 791 | int dx = rectX - raster.getSampleModelTranslateX(); | ||
| 792 | int dy = rectY - raster.getSampleModelTranslateY(); | ||
| 793 | |||
| 794 | MultiPixelPackedSampleModel mpp = (MultiPixelPackedSampleModel)sm; | ||
| 795 | int lineStride = mpp.getScanlineStride(); | ||
| 796 | int eltOffset = dataBuffer.getOffset() + mpp.getOffset(dx, dy); | ||
| 797 | int bitOffset = mpp.getBitOffset(dx); | ||
| 798 | |||
| 799 | int k = 0; | ||
| 800 | |||
| 801 | if(dataBuffer instanceof DataBufferByte) { | ||
| 802 | byte[] data = ((DataBufferByte)dataBuffer).getData(); | ||
| 803 | for(int y = 0; y < rectHeight; y++) { | ||
| 804 | int bOffset = eltOffset*8 + bitOffset; | ||
| 805 | for(int x = 0; x < rectWidth; x++) { | ||
| 806 | if(bdata[k++] != (byte)0) { | ||
| 807 | data[bOffset/8] |= | ||
| 808 | (byte)(0x00000001 << (7 - bOffset & 7)); | ||
| 809 | } | ||
| 810 | bOffset++; | ||
| 811 | } | ||
| 812 | eltOffset += lineStride; | ||
| 813 | } | ||
| 814 | } else if(dataBuffer instanceof DataBufferShort || | ||
| 815 | dataBuffer instanceof DataBufferUShort) { | ||
| 816 | short[] data = dataBuffer instanceof DataBufferShort ? | ||
| 817 | ((DataBufferShort)dataBuffer).getData() : | ||
| 818 | ((DataBufferUShort)dataBuffer).getData(); | ||
| 819 | for(int y = 0; y < rectHeight; y++) { | ||
| 820 | int bOffset = eltOffset*16 + bitOffset; | ||
| 821 | for(int x = 0; x < rectWidth; x++) { | ||
| 822 | if(bdata[k++] != (byte)0) { | ||
| 823 | data[bOffset/16] |= | ||
| 824 | (short)(0x00000001 << | ||
| 825 | (15 - bOffset % 16)); | ||
| 826 | } | ||
| 827 | bOffset++; | ||
| 828 | } | ||
| 829 | eltOffset += lineStride; | ||
| 830 | } | ||
| 831 | } else if(dataBuffer instanceof DataBufferInt) { | ||
| 832 | int[] data = ((DataBufferInt)dataBuffer).getData(); | ||
| 833 | for(int y = 0; y < rectHeight; y++) { | ||
| 834 | int bOffset = eltOffset*32 + bitOffset; | ||
| 835 | for(int x = 0; x < rectWidth; x++) { | ||
| 836 | if(bdata[k++] != (byte)0) { | ||
| 837 | data[bOffset/32] |= | ||
| 838 | (int)(0x00000001 << | ||
| 839 | (31 - bOffset % 32)); | ||
| 840 | } | ||
| 841 | bOffset++; | ||
| 842 | } | ||
| 843 | eltOffset += lineStride; | ||
| 844 | } | ||
| 845 | } | ||
| 846 | } | ||
| 847 | |||
| 848 | public static boolean isBinary(SampleModel sm) { | ||
| 849 | return sm instanceof MultiPixelPackedSampleModel && | ||
| 850 | ((MultiPixelPackedSampleModel)sm).getPixelBitStride() == 1 && | ||
| 851 | sm.getNumBands() == 1; | ||
| 852 | } | ||
| 853 | |||
| 854 | public static ColorModel createColorModel(ColorSpace colorSpace, | ||
| 855 | SampleModel sampleModel) { | ||
| 856 | ColorModel colorModel = null; | ||
| 857 | |||
| 858 | if(sampleModel == null) { | ||
| 859 | throw new IllegalArgumentException(I18N.getString("ImageUtil1")); | ||
| 860 | } | ||
| 861 | |||
| 862 | int numBands = sampleModel.getNumBands(); | ||
| 863 | if (numBands < 1 || numBands > 4) { | ||
| 864 | return null; | ||
| 865 | } | ||
| 866 | |||
| 867 | int dataType = sampleModel.getDataType(); | ||
| 868 | if (sampleModel instanceof ComponentSampleModel) { | ||
| 869 | if (dataType < DataBuffer.TYPE_BYTE || | ||
| 870 | //dataType == DataBuffer.TYPE_SHORT || | ||
| 871 | dataType > DataBuffer.TYPE_DOUBLE) { | ||
| 872 | return null; | ||
| 873 | } | ||
| 874 | |||
| 875 | if (colorSpace == null) | ||
| 876 | colorSpace = | ||
| 877 | numBands <= 2 ? | ||
| 878 | ColorSpace.getInstance(ColorSpace.CS_GRAY) : | ||
| 879 | ColorSpace.getInstance(ColorSpace.CS_sRGB); | ||
| 880 | |||
| 881 | boolean useAlpha = (numBands == 2) || (numBands == 4); | ||
| 882 | int transparency = useAlpha ? | ||
| 883 | Transparency.TRANSLUCENT : Transparency.OPAQUE; | ||
| 884 | |||
| 885 | boolean premultiplied = false; | ||
| 886 | |||
| 887 | int dataTypeSize = DataBuffer.getDataTypeSize(dataType); | ||
| 888 | int[] bits = new int[numBands]; | ||
| 889 | for (int i = 0; i < numBands; i++) { | ||
| 890 | bits[i] = dataTypeSize; | ||
| 891 | } | ||
| 892 | |||
| 893 | colorModel = new ComponentColorModel(colorSpace, | ||
| 894 | bits, | ||
| 895 | useAlpha, | ||
| 896 | premultiplied, | ||
| 897 | transparency, | ||
| 898 | dataType); | ||
| 899 | } else if (sampleModel instanceof SinglePixelPackedSampleModel) { | ||
| 900 | SinglePixelPackedSampleModel sppsm = | ||
| 901 | (SinglePixelPackedSampleModel)sampleModel; | ||
| 902 | |||
| 903 | int[] bitMasks = sppsm.getBitMasks(); | ||
| 904 | int rmask = 0; | ||
| 905 | int gmask = 0; | ||
| 906 | int bmask = 0; | ||
| 907 | int amask = 0; | ||
| 908 | |||
| 909 | numBands = bitMasks.length; | ||
| 910 | if (numBands <= 2) { | ||
| 911 | rmask = gmask = bmask = bitMasks[0]; | ||
| 912 | if (numBands == 2) { | ||
| 913 | amask = bitMasks[1]; | ||
| 914 | } | ||
| 915 | } else { | ||
| 916 | rmask = bitMasks[0]; | ||
| 917 | gmask = bitMasks[1]; | ||
| 918 | bmask = bitMasks[2]; | ||
| 919 | if (numBands == 4) { | ||
| 920 | amask = bitMasks[3]; | ||
| 921 | } | ||
| 922 | } | ||
| 923 | |||
| 924 | int[] sampleSize = sppsm.getSampleSize(); | ||
| 925 | int bits = 0; | ||
| 926 | for (int i = 0; i < sampleSize.length; i++) { | ||
| 927 | bits += sampleSize[i]; | ||
| 928 | } | ||
| 929 | |||
| 930 | if (colorSpace == null) | ||
| 931 | colorSpace = ColorSpace.getInstance(ColorSpace.CS_sRGB); | ||
| 932 | |||
| 933 | colorModel = | ||
| 934 | new DirectColorModel(colorSpace, | ||
| 935 | bits, rmask, gmask, bmask, amask, | ||
| 936 | false, | ||
| 937 | sampleModel.getDataType()); | ||
| 938 | } else if (sampleModel instanceof MultiPixelPackedSampleModel) { | ||
| 939 | int bits = | ||
| 940 | ((MultiPixelPackedSampleModel)sampleModel).getPixelBitStride(); | ||
| 941 | int size = 1 << bits; | ||
| 942 | byte[] comp = new byte[size]; | ||
| 943 | |||
| 944 | for (int i = 0; i < size; i++) | ||
| 945 | comp[i] = (byte)(255 * i / (size - 1)); | ||
| 946 | |||
| 947 | colorModel = new IndexColorModel(bits, size, comp, comp, comp); | ||
| 948 | } | ||
| 949 | |||
| 950 | return colorModel; | ||
| 951 | } | ||
| 952 | |||
| 953 | public static int getElementSize(SampleModel sm) { | ||
| 954 | int elementSize = DataBuffer.getDataTypeSize(sm.getDataType()); | ||
| 955 | |||
| 956 | if (sm instanceof MultiPixelPackedSampleModel) { | ||
| 957 | MultiPixelPackedSampleModel mppsm = | ||
| 958 | (MultiPixelPackedSampleModel)sm; | ||
| 959 | return mppsm.getSampleSize(0) * mppsm.getNumBands(); | ||
| 960 | } else if (sm instanceof ComponentSampleModel) { | ||
| 961 | return sm.getNumBands() * elementSize; | ||
| 962 | } else if (sm instanceof SinglePixelPackedSampleModel) { | ||
| 963 | return elementSize; | ||
| 964 | } | ||
| 965 | |||
| 966 | return elementSize * sm.getNumBands(); | ||
| 967 | |||
| 968 | } | ||
| 969 | |||
| 970 | public static long getTileSize(SampleModel sm) { | ||
| 971 | int elementSize = DataBuffer.getDataTypeSize(sm.getDataType()); | ||
| 972 | |||
| 973 | if (sm instanceof MultiPixelPackedSampleModel) { | ||
| 974 | MultiPixelPackedSampleModel mppsm = | ||
| 975 | (MultiPixelPackedSampleModel)sm; | ||
| 976 | return (mppsm.getScanlineStride() * mppsm.getHeight() + | ||
| 977 | (mppsm.getDataBitOffset() + elementSize -1) / elementSize) * | ||
| 978 | ((elementSize + 7) / 8); | ||
| 979 | } else if (sm instanceof ComponentSampleModel) { | ||
| 980 | ComponentSampleModel csm = (ComponentSampleModel)sm; | ||
| 981 | int[] bandOffsets = csm.getBandOffsets(); | ||
| 982 | int maxBandOff = bandOffsets[0]; | ||
| 983 | for (int i=1; i<bandOffsets.length; i++) | ||
| 984 | maxBandOff = Math.max(maxBandOff, bandOffsets[i]); | ||
| 985 | |||
| 986 | long size = 0; | ||
| 987 | int pixelStride = csm.getPixelStride(); | ||
| 988 | int scanlineStride = csm.getScanlineStride(); | ||
| 989 | if (maxBandOff >= 0) | ||
| 990 | size += maxBandOff + 1; | ||
| 991 | if (pixelStride > 0) | ||
| 992 | size += pixelStride * (sm.getWidth() - 1); | ||
| 993 | if (scanlineStride > 0) | ||
| 994 | size += scanlineStride * (sm.getHeight() - 1); | ||
| 995 | |||
| 996 | int[] bankIndices = csm.getBankIndices(); | ||
| 997 | maxBandOff = bankIndices[0]; | ||
| 998 | for (int i=1; i<bankIndices.length; i++) | ||
| 999 | maxBandOff = Math.max(maxBandOff, bankIndices[i]); | ||
| 1000 | return size * (maxBandOff + 1) * ((elementSize + 7) / 8); | ||
| 1001 | } else if (sm instanceof SinglePixelPackedSampleModel) { | ||
| 1002 | SinglePixelPackedSampleModel sppsm = | ||
| 1003 | (SinglePixelPackedSampleModel)sm; | ||
| 1004 | long size = sppsm.getScanlineStride() * (sppsm.getHeight() - 1) + | ||
| 1005 | sppsm.getWidth(); | ||
| 1006 | return size * ((elementSize + 7) / 8); | ||
| 1007 | } | ||
| 1008 | |||
| 1009 | return 0; | ||
| 1010 | } | ||
| 1011 | |||
| 1012 | public static long getBandSize(SampleModel sm) { | ||
| 1013 | int elementSize = DataBuffer.getDataTypeSize(sm.getDataType()); | ||
| 1014 | |||
| 1015 | if (sm instanceof ComponentSampleModel) { | ||
| 1016 | ComponentSampleModel csm = (ComponentSampleModel)sm; | ||
| 1017 | int pixelStride = csm.getPixelStride(); | ||
| 1018 | int scanlineStride = csm.getScanlineStride(); | ||
| 1019 | long size = Math.min(pixelStride, scanlineStride); | ||
| 1020 | |||
| 1021 | if (pixelStride > 0) | ||
| 1022 | size += pixelStride * (sm.getWidth() - 1); | ||
| 1023 | if (scanlineStride > 0) | ||
| 1024 | size += scanlineStride * (sm.getHeight() - 1); | ||
| 1025 | return size * ((elementSize + 7) / 8); | ||
| 1026 | } else | ||
| 1027 | return getTileSize(sm); | ||
| 1028 | } | ||
| 1029 | /** | ||
| 1030 | * Tests whether the color indices represent a gray-scale image. | ||
| 1031 | * | ||
| 1032 | * @param r The red channel color indices. | ||
| 1033 | * @param g The green channel color indices. | ||
| 1034 | * @param b The blue channel color indices. | ||
| 1035 | * @return If all the indices have 256 entries, and are identical mappings, | ||
| 1036 | * return <code>true</code>; otherwise, return <code>false</code>. | ||
| 1037 | */ | ||
| 1038 | public static boolean isIndicesForGrayscale(byte[] r, byte[] g, byte[] b) { | ||
| 1039 | if (r.length != g.length || r.length != b.length) | ||
| 1040 | return false; | ||
| 1041 | |||
| 1042 | int size = r.length; | ||
| 1043 | |||
| 1044 | if (size != 256) | ||
| 1045 | return false; | ||
| 1046 | |||
| 1047 | for (int i = 0; i < size; i++) { | ||
| 1048 | byte temp = (byte) i; | ||
| 1049 | |||
| 1050 | if (r[i] != temp || g[i] != temp || b[i] != temp) | ||
| 1051 | return false; | ||
| 1052 | } | ||
| 1053 | |||
| 1054 | return true; | ||
| 1055 | } | ||
| 1056 | |||
| 1057 | /** Converts the provided object to <code>String</code> */ | ||
| 1058 | public static String convertObjectToString(Object obj) { | ||
| 1059 | if (obj == null) | ||
| 1060 | return ""; | ||
| 1061 | |||
| 1062 | String s = ""; | ||
| 1063 | if (obj instanceof byte[]) { | ||
| 1064 | byte[] bArray = (byte[])obj; | ||
| 1065 | for (int i = 0; i < bArray.length; i++) | ||
| 1066 | s += bArray[i] + " "; | ||
| 1067 | return s; | ||
| 1068 | } | ||
| 1069 | |||
| 1070 | if (obj instanceof int[]) { | ||
| 1071 | int[] iArray = (int[])obj; | ||
| 1072 | for (int i = 0; i < iArray.length; i++) | ||
| 1073 | s += iArray[i] + " " ; | ||
| 1074 | return s; | ||
| 1075 | } | ||
| 1076 | |||
| 1077 | if (obj instanceof short[]) { | ||
| 1078 | short[] sArray = (short[])obj; | ||
| 1079 | for (int i = 0; i < sArray.length; i++) | ||
| 1080 | s += sArray[i] + " " ; | ||
| 1081 | return s; | ||
| 1082 | } | ||
| 1083 | |||
| 1084 | return obj.toString(); | ||
| 1085 | |||
| 1086 | } | ||
| 1087 | |||
| 1088 | /** Checks that the provided <code>ImageWriter</code> can encode | ||
| 1089 | * the provided <code>ImageTypeSpecifier</code> or not. If not, an | ||
| 1090 | * <code>IIOException</code> will be thrown. | ||
| 1091 | * @param writer The provided <code>ImageWriter</code>. | ||
| 1092 | * @param type The image to be tested. | ||
| 1093 | * @throws IIOException If the writer cannot encoded the provided image. | ||
| 1094 | */ | ||
| 1095 | public static final void canEncodeImage(ImageWriter writer, | ||
| 1096 | ImageTypeSpecifier type) | ||
| 1097 | throws IIOException { | ||
| 1098 | ImageWriterSpi spi = writer.getOriginatingProvider(); | ||
| 1099 | |||
| 1100 | if(type != null && spi != null && !spi.canEncodeImage(type)) { | ||
| 1101 | throw new IIOException(I18N.getString("ImageUtil2")+" "+ | ||
| 1102 | writer.getClass().getName()); | ||
| 1103 | } | ||
| 1104 | } | ||
| 1105 | |||
| 1106 | /** Checks that the provided <code>ImageWriter</code> can encode | ||
| 1107 | * the provided <code>ColorModel</code> and <code>SampleModel</code>. | ||
| 1108 | * If not, an <code>IIOException</code> will be thrown. | ||
| 1109 | * @param writer The provided <code>ImageWriter</code>. | ||
| 1110 | * @param colorModel The provided <code>ColorModel</code>. | ||
| 1111 | * @param sampleModel The provided <code>SampleModel</code>. | ||
| 1112 | * @throws IIOException If the writer cannot encoded the provided image. | ||
| 1113 | */ | ||
| 1114 | public static final void canEncodeImage(ImageWriter writer, | ||
| 1115 | ColorModel colorModel, | ||
| 1116 | SampleModel sampleModel) | ||
| 1117 | throws IIOException { | ||
| 1118 | ImageTypeSpecifier type = null; | ||
| 1119 | if (colorModel != null && sampleModel != null) | ||
| 1120 | type = new ImageTypeSpecifier(colorModel, sampleModel); | ||
| 1121 | canEncodeImage(writer, type); | ||
| 1122 | } | ||
| 1123 | |||
| 1124 | /** | ||
| 1125 | * Returns whether the image has contiguous data across rows. | ||
| 1126 | */ | ||
| 1127 | public static final boolean imageIsContiguous(RenderedImage image) { | ||
| 1128 | SampleModel sm; | ||
| 1129 | if(image instanceof BufferedImage) { | ||
| 1130 | WritableRaster ras = ((BufferedImage)image).getRaster(); | ||
| 1131 | sm = ras.getSampleModel(); | ||
| 1132 | } else { | ||
| 1133 | sm = image.getSampleModel(); | ||
| 1134 | } | ||
| 1135 | |||
| 1136 | if (sm instanceof ComponentSampleModel) { | ||
| 1137 | // Ensure image rows samples are stored contiguously | ||
| 1138 | // in a single bank. | ||
| 1139 | ComponentSampleModel csm = (ComponentSampleModel)sm; | ||
| 1140 | |||
| 1141 | if (csm.getPixelStride() != csm.getNumBands()) { | ||
| 1142 | return false; | ||
| 1143 | } | ||
| 1144 | |||
| 1145 | int[] bandOffsets = csm.getBandOffsets(); | ||
| 1146 | for (int i = 0; i < bandOffsets.length; i++) { | ||
| 1147 | if (bandOffsets[i] != i) { | ||
| 1148 | return false; | ||
| 1149 | } | ||
| 1150 | } | ||
| 1151 | |||
| 1152 | int[] bankIndices = csm.getBankIndices(); | ||
| 1153 | for (int i = 0; i < bandOffsets.length; i++) { | ||
| 1154 | if (bankIndices[i] != 0) { | ||
| 1155 | return false; | ||
| 1156 | } | ||
| 1157 | } | ||
| 1158 | |||
| 1159 | return true; | ||
| 1160 | } | ||
| 1161 | |||
| 1162 | // Otherwise true if and only if it's a bilevel image with | ||
| 1163 | // a MultiPixelPackedSampleModel, 1 bit per pixel, and 1 bit | ||
| 1164 | // pixel stride. | ||
| 1165 | return ImageUtil.isBinary(sm); | ||
| 1166 | } | ||
| 1167 | } | ||