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| 1 | /* | ||
| 2 | * Copyright (c) 2003, 2005, 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.bmp; | ||
| 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.color.ICC_ColorSpace; | ||
| 33 | import java.awt.color.ICC_Profile; | ||
| 34 | import java.awt.image.BufferedImage; | ||
| 35 | import java.awt.image.ColorModel; | ||
| 36 | import java.awt.image.ComponentColorModel; | ||
| 37 | import java.awt.image.ComponentSampleModel; | ||
| 38 | import java.awt.image.DataBuffer; | ||
| 39 | import java.awt.image.DataBufferByte; | ||
| 40 | import java.awt.image.DataBufferInt; | ||
| 41 | import java.awt.image.DataBufferUShort; | ||
| 42 | import java.awt.image.DirectColorModel; | ||
| 43 | import java.awt.image.IndexColorModel; | ||
| 44 | import java.awt.image.MultiPixelPackedSampleModel; | ||
| 45 | import java.awt.image.PixelInterleavedSampleModel; | ||
| 46 | import java.awt.image.Raster; | ||
| 47 | import java.awt.image.SampleModel; | ||
| 48 | import java.awt.image.SinglePixelPackedSampleModel; | ||
| 49 | import java.awt.image.WritableRaster; | ||
| 50 | |||
| 51 | import javax.imageio.IIOException; | ||
| 52 | import javax.imageio.ImageIO; | ||
| 53 | import javax.imageio.ImageReader; | ||
| 54 | import javax.imageio.ImageReadParam; | ||
| 55 | import javax.imageio.ImageTypeSpecifier; | ||
| 56 | import javax.imageio.metadata.IIOMetadata; | ||
| 57 | import javax.imageio.spi.ImageReaderSpi; | ||
| 58 | import javax.imageio.stream.ImageInputStream; | ||
| 59 | import javax.imageio.event.IIOReadProgressListener; | ||
| 60 | import javax.imageio.event.IIOReadUpdateListener; | ||
| 61 | import javax.imageio.event.IIOReadWarningListener; | ||
| 62 | |||
| 63 | import java.io.*; | ||
| 64 | import java.nio.*; | ||
| 65 | import java.security.AccessController; | ||
| 66 | import java.security.PrivilegedAction; | ||
| 67 | import java.util.ArrayList; | ||
| 68 | import java.util.Iterator; | ||
| 69 | import java.util.StringTokenizer; | ||
| 70 | |||
| 71 | import com.sun.imageio.plugins.common.ImageUtil; | ||
| 72 | import com.sun.imageio.plugins.common.I18N; | ||
| 73 | |||
| 74 | /** This class is the Java Image IO plugin reader for BMP images. | ||
| 75 | * It may subsample the image, clip the image, select sub-bands, | ||
| 76 | * and shift the decoded image origin if the proper decoding parameter | ||
| 77 | * are set in the provided <code>ImageReadParam</code>. | ||
| 78 | * | ||
| 79 | * This class supports Microsoft Windows Bitmap Version 3-5, | ||
| 80 | * as well as OS/2 Bitmap Version 2.x (for single-image BMP file). | ||
| 81 | */ | ||
| 82 | public class BMPImageReader extends ImageReader implements BMPConstants { | ||
| 83 | // BMP Image types | ||
| 84 | private static final int VERSION_2_1_BIT = 0; | ||
| 85 | private static final int VERSION_2_4_BIT = 1; | ||
| 86 | private static final int VERSION_2_8_BIT = 2; | ||
| 87 | private static final int VERSION_2_24_BIT = 3; | ||
| 88 | |||
| 89 | private static final int VERSION_3_1_BIT = 4; | ||
| 90 | private static final int VERSION_3_4_BIT = 5; | ||
| 91 | private static final int VERSION_3_8_BIT = 6; | ||
| 92 | private static final int VERSION_3_24_BIT = 7; | ||
| 93 | |||
| 94 | private static final int VERSION_3_NT_16_BIT = 8; | ||
| 95 | private static final int VERSION_3_NT_32_BIT = 9; | ||
| 96 | |||
| 97 | private static final int VERSION_4_1_BIT = 10; | ||
| 98 | private static final int VERSION_4_4_BIT = 11; | ||
| 99 | private static final int VERSION_4_8_BIT = 12; | ||
| 100 | private static final int VERSION_4_16_BIT = 13; | ||
| 101 | private static final int VERSION_4_24_BIT = 14; | ||
| 102 | private static final int VERSION_4_32_BIT = 15; | ||
| 103 | |||
| 104 | private static final int VERSION_3_XP_EMBEDDED = 16; | ||
| 105 | private static final int VERSION_4_XP_EMBEDDED = 17; | ||
| 106 | private static final int VERSION_5_XP_EMBEDDED = 18; | ||
| 107 | |||
| 108 | // BMP variables | ||
| 109 | private long bitmapFileSize; | ||
| 110 | private long bitmapOffset; | ||
| 111 | private long compression; | ||
| 112 | private long imageSize; | ||
| 113 | private byte palette[]; | ||
| 114 | private int imageType; | ||
| 115 | private int numBands; | ||
| 116 | private boolean isBottomUp; | ||
| 117 | private int bitsPerPixel; | ||
| 118 | private int redMask, greenMask, blueMask, alphaMask; | ||
| 119 | |||
| 120 | private SampleModel sampleModel, originalSampleModel; | ||
| 121 | private ColorModel colorModel, originalColorModel; | ||
| 122 | |||
| 123 | /** The input stream where reads from */ | ||
| 124 | private ImageInputStream iis = null; | ||
| 125 | |||
| 126 | /** Indicates whether the header is read. */ | ||
| 127 | private boolean gotHeader = false; | ||
| 128 | |||
| 129 | /** The original image width. */ | ||
| 130 | private int width; | ||
| 131 | |||
| 132 | /** The original image height. */ | ||
| 133 | private int height; | ||
| 134 | |||
| 135 | /** The destination region. */ | ||
| 136 | private Rectangle destinationRegion; | ||
| 137 | |||
| 138 | /** The source region. */ | ||
| 139 | private Rectangle sourceRegion; | ||
| 140 | |||
| 141 | /** The metadata from the stream. */ | ||
| 142 | private BMPMetadata metadata; | ||
| 143 | |||
| 144 | /** The destination image. */ | ||
| 145 | private BufferedImage bi; | ||
| 146 | |||
| 147 | /** Indicates whether subsampled, subregion is required, and offset is | ||
| 148 | * defined | ||
| 149 | */ | ||
| 150 | private boolean noTransform = true; | ||
| 151 | |||
| 152 | /** Indicates whether subband is selected. */ | ||
| 153 | private boolean seleBand = false; | ||
| 154 | |||
| 155 | /** The scaling factors. */ | ||
| 156 | private int scaleX, scaleY; | ||
| 157 | |||
| 158 | /** source and destination bands. */ | ||
| 159 | private int[] sourceBands, destBands; | ||
| 160 | |||
| 161 | /** Constructs <code>BMPImageReader</code> from the provided | ||
| 162 | * <code>ImageReaderSpi</code>. | ||
| 163 | */ | ||
| 164 | public BMPImageReader(ImageReaderSpi originator) { | ||
| 165 | super(originator); | ||
| 166 | } | ||
| 167 | |||
| 168 | /** Overrides the method defined in the superclass. */ | ||
| 169 | public void setInput(Object input, | ||
| 170 | boolean seekForwardOnly, | ||
| 171 | boolean ignoreMetadata) { | ||
| 172 | super.setInput(input, seekForwardOnly, ignoreMetadata); | ||
| 173 | iis = (ImageInputStream) input; // Always works | ||
| 174 | if(iis != null) | ||
| 175 | iis.setByteOrder(ByteOrder.LITTLE_ENDIAN); | ||
| 176 | resetHeaderInfo(); | ||
| 177 | } | ||
| 178 | |||
| 179 | /** Overrides the method defined in the superclass. */ | ||
| 180 | public int getNumImages(boolean allowSearch) throws IOException { | ||
| 181 | if (iis == null) { | ||
| 182 | throw new IllegalStateException(I18N.getString("GetNumImages0")); | ||
| 183 | } | ||
| 184 | if (seekForwardOnly && allowSearch) { | ||
| 185 | throw new IllegalStateException(I18N.getString("GetNumImages1")); | ||
| 186 | } | ||
| 187 | return 1; | ||
| 188 | } | ||
| 189 | |||
| 190 | public int getWidth(int imageIndex) throws IOException { | ||
| 191 | checkIndex(imageIndex); | ||
| 192 | readHeader(); | ||
| 193 | return width; | ||
| 194 | } | ||
| 195 | |||
| 196 | public int getHeight(int imageIndex) throws IOException { | ||
| 197 | checkIndex(imageIndex); | ||
| 198 | readHeader(); | ||
| 199 | return height; | ||
| 200 | } | ||
| 201 | |||
| 202 | private void checkIndex(int imageIndex) { | ||
| 203 | if (imageIndex != 0) { | ||
| 204 | throw new IndexOutOfBoundsException(I18N.getString("BMPImageReader0")); | ||
| 205 | } | ||
| 206 | } | ||
| 207 | |||
| 208 | public void readHeader() throws IOException { | ||
| 209 | if (gotHeader) | ||
| 210 | return; | ||
| 211 | |||
| 212 | if (iis == null) { | ||
| 213 | throw new IllegalStateException("Input source not set!"); | ||
| 214 | } | ||
| 215 | int profileData = 0, profileSize = 0; | ||
| 216 | |||
| 217 | this.metadata = new BMPMetadata(); | ||
| 218 | iis.mark(); | ||
| 219 | |||
| 220 | // read and check the magic marker | ||
| 221 | byte[] marker = new byte[2]; | ||
| 222 | iis.read(marker); | ||
| 223 | if (marker[0] != 0x42 || marker[1] != 0x4d) | ||
| 224 | throw new IllegalArgumentException(I18N.getString("BMPImageReader1")); | ||
| 225 | |||
| 226 | // Read file size | ||
| 227 | bitmapFileSize = iis.readUnsignedInt(); | ||
| 228 | // skip the two reserved fields | ||
| 229 | iis.skipBytes(4); | ||
| 230 | |||
| 231 | // Offset to the bitmap from the beginning | ||
| 232 | bitmapOffset = iis.readUnsignedInt(); | ||
| 233 | // End File Header | ||
| 234 | |||
| 235 | // Start BitmapCoreHeader | ||
| 236 | long size = iis.readUnsignedInt(); | ||
| 237 | |||
| 238 | if (size == 12) { | ||
| 239 | width = iis.readShort(); | ||
| 240 | height = iis.readShort(); | ||
| 241 | } else { | ||
| 242 | width = iis.readInt(); | ||
| 243 | height = iis.readInt(); | ||
| 244 | } | ||
| 245 | |||
| 246 | metadata.width = width; | ||
| 247 | metadata.height = height; | ||
| 248 | |||
| 249 | int planes = iis.readUnsignedShort(); | ||
| 250 | bitsPerPixel = iis.readUnsignedShort(); | ||
| 251 | |||
| 252 | //metadata.colorPlane = planes; | ||
| 253 | metadata.bitsPerPixel = (short)bitsPerPixel; | ||
| 254 | |||
| 255 | // As BMP always has 3 rgb bands, except for Version 5, | ||
| 256 | // which is bgra | ||
| 257 | numBands = 3; | ||
| 258 | |||
| 259 | if (size == 12) { | ||
| 260 | // Windows 2.x and OS/2 1.x | ||
| 261 | metadata.bmpVersion = VERSION_2; | ||
| 262 | |||
| 263 | // Classify the image type | ||
| 264 | if (bitsPerPixel == 1) { | ||
| 265 | imageType = VERSION_2_1_BIT; | ||
| 266 | } else if (bitsPerPixel == 4) { | ||
| 267 | imageType = VERSION_2_4_BIT; | ||
| 268 | } else if (bitsPerPixel == 8) { | ||
| 269 | imageType = VERSION_2_8_BIT; | ||
| 270 | } else if (bitsPerPixel == 24) { | ||
| 271 | imageType = VERSION_2_24_BIT; | ||
| 272 | } | ||
| 273 | |||
| 274 | // Read in the palette | ||
| 275 | int numberOfEntries = (int)((bitmapOffset - 14 - size) / 3); | ||
| 276 | int sizeOfPalette = numberOfEntries*3; | ||
| 277 | palette = new byte[sizeOfPalette]; | ||
| 278 | iis.readFully(palette, 0, sizeOfPalette); | ||
| 279 | metadata.palette = palette; | ||
| 280 | metadata.paletteSize = numberOfEntries; | ||
| 281 | } else { | ||
| 282 | compression = iis.readUnsignedInt(); | ||
| 283 | imageSize = iis.readUnsignedInt(); | ||
| 284 | long xPelsPerMeter = iis.readInt(); | ||
| 285 | long yPelsPerMeter = iis.readInt(); | ||
| 286 | long colorsUsed = iis.readUnsignedInt(); | ||
| 287 | long colorsImportant = iis.readUnsignedInt(); | ||
| 288 | |||
| 289 | metadata.compression = (int)compression; | ||
| 290 | metadata.xPixelsPerMeter = (int)xPelsPerMeter; | ||
| 291 | metadata.yPixelsPerMeter = (int)yPelsPerMeter; | ||
| 292 | metadata.colorsUsed = (int)colorsUsed; | ||
| 293 | metadata.colorsImportant = (int)colorsImportant; | ||
| 294 | |||
| 295 | if (size == 40) { | ||
| 296 | // Windows 3.x and Windows NT | ||
| 297 | switch((int)compression) { | ||
| 298 | |||
| 299 | case BI_JPEG: | ||
| 300 | case BI_PNG: | ||
| 301 | metadata.bmpVersion = VERSION_3; | ||
| 302 | imageType = VERSION_3_XP_EMBEDDED; | ||
| 303 | break; | ||
| 304 | |||
| 305 | case BI_RGB: // No compression | ||
| 306 | case BI_RLE8: // 8-bit RLE compression | ||
| 307 | case BI_RLE4: // 4-bit RLE compression | ||
| 308 | |||
| 309 | // Read in the palette | ||
| 310 | int numberOfEntries = (int)((bitmapOffset-14-size) / 4); | ||
| 311 | int sizeOfPalette = numberOfEntries * 4; | ||
| 312 | palette = new byte[sizeOfPalette]; | ||
| 313 | iis.readFully(palette, 0, sizeOfPalette); | ||
| 314 | |||
| 315 | metadata.palette = palette; | ||
| 316 | metadata.paletteSize = numberOfEntries; | ||
| 317 | |||
| 318 | if (bitsPerPixel == 1) { | ||
| 319 | imageType = VERSION_3_1_BIT; | ||
| 320 | } else if (bitsPerPixel == 4) { | ||
| 321 | imageType = VERSION_3_4_BIT; | ||
| 322 | } else if (bitsPerPixel == 8) { | ||
| 323 | imageType = VERSION_3_8_BIT; | ||
| 324 | } else if (bitsPerPixel == 24) { | ||
| 325 | imageType = VERSION_3_24_BIT; | ||
| 326 | } else if (bitsPerPixel == 16) { | ||
| 327 | imageType = VERSION_3_NT_16_BIT; | ||
| 328 | |||
| 329 | redMask = 0x7C00; | ||
| 330 | greenMask = 0x3E0; | ||
| 331 | blueMask = (1 << 5) - 1;// 0x1F; | ||
| 332 | metadata.redMask = redMask; | ||
| 333 | metadata.greenMask = greenMask; | ||
| 334 | metadata.blueMask = blueMask; | ||
| 335 | } else if (bitsPerPixel == 32) { | ||
| 336 | imageType = VERSION_3_NT_32_BIT; | ||
| 337 | redMask = 0x00FF0000; | ||
| 338 | greenMask = 0x0000FF00; | ||
| 339 | blueMask = 0x000000FF; | ||
| 340 | metadata.redMask = redMask; | ||
| 341 | metadata.greenMask = greenMask; | ||
| 342 | metadata.blueMask = blueMask; | ||
| 343 | } | ||
| 344 | |||
| 345 | metadata.bmpVersion = VERSION_3; | ||
| 346 | break; | ||
| 347 | |||
| 348 | case BI_BITFIELDS: | ||
| 349 | |||
| 350 | if (bitsPerPixel == 16) { | ||
| 351 | imageType = VERSION_3_NT_16_BIT; | ||
| 352 | } else if (bitsPerPixel == 32) { | ||
| 353 | imageType = VERSION_3_NT_32_BIT; | ||
| 354 | } | ||
| 355 | |||
| 356 | // BitsField encoding | ||
| 357 | redMask = (int)iis.readUnsignedInt(); | ||
| 358 | greenMask = (int)iis.readUnsignedInt(); | ||
| 359 | blueMask = (int)iis.readUnsignedInt(); | ||
| 360 | metadata.redMask = redMask; | ||
| 361 | metadata.greenMask = greenMask; | ||
| 362 | metadata.blueMask = blueMask; | ||
| 363 | |||
| 364 | if (colorsUsed != 0) { | ||
| 365 | // there is a palette | ||
| 366 | sizeOfPalette = (int)colorsUsed*4; | ||
| 367 | palette = new byte[sizeOfPalette]; | ||
| 368 | iis.readFully(palette, 0, sizeOfPalette); | ||
| 369 | |||
| 370 | metadata.palette = palette; | ||
| 371 | metadata.paletteSize = (int)colorsUsed; | ||
| 372 | } | ||
| 373 | metadata.bmpVersion = VERSION_3_NT; | ||
| 374 | |||
| 375 | break; | ||
| 376 | default: | ||
| 377 | throw new | ||
| 378 | RuntimeException(I18N.getString("BMPImageReader2")); | ||
| 379 | } | ||
| 380 | } else if (size == 108 || size == 124) { | ||
| 381 | // Windows 4.x BMP | ||
| 382 | if (size == 108) | ||
| 383 | metadata.bmpVersion = VERSION_4; | ||
| 384 | else if (size == 124) | ||
| 385 | metadata.bmpVersion = VERSION_5; | ||
| 386 | |||
| 387 | // rgb masks, valid only if comp is BI_BITFIELDS | ||
| 388 | redMask = (int)iis.readUnsignedInt(); | ||
| 389 | greenMask = (int)iis.readUnsignedInt(); | ||
| 390 | blueMask = (int)iis.readUnsignedInt(); | ||
| 391 | // Only supported for 32bpp BI_RGB argb | ||
| 392 | alphaMask = (int)iis.readUnsignedInt(); | ||
| 393 | long csType = iis.readUnsignedInt(); | ||
| 394 | int redX = iis.readInt(); | ||
| 395 | int redY = iis.readInt(); | ||
| 396 | int redZ = iis.readInt(); | ||
| 397 | int greenX = iis.readInt(); | ||
| 398 | int greenY = iis.readInt(); | ||
| 399 | int greenZ = iis.readInt(); | ||
| 400 | int blueX = iis.readInt(); | ||
| 401 | int blueY = iis.readInt(); | ||
| 402 | int blueZ = iis.readInt(); | ||
| 403 | long gammaRed = iis.readUnsignedInt(); | ||
| 404 | long gammaGreen = iis.readUnsignedInt(); | ||
| 405 | long gammaBlue = iis.readUnsignedInt(); | ||
| 406 | |||
| 407 | if (size == 124) { | ||
| 408 | metadata.intent = iis.readInt(); | ||
| 409 | profileData = iis.readInt(); | ||
| 410 | profileSize = iis.readInt(); | ||
| 411 | iis.skipBytes(4); | ||
| 412 | } | ||
| 413 | |||
| 414 | metadata.colorSpace = (int)csType; | ||
| 415 | |||
| 416 | if (csType == LCS_CALIBRATED_RGB) { | ||
| 417 | // All the new fields are valid only for this case | ||
| 418 | metadata.redX = redX; | ||
| 419 | metadata.redY = redY; | ||
| 420 | metadata.redZ = redZ; | ||
| 421 | metadata.greenX = greenX; | ||
| 422 | metadata.greenY = greenY; | ||
| 423 | metadata.greenZ = greenZ; | ||
| 424 | metadata.blueX = blueX; | ||
| 425 | metadata.blueY = blueY; | ||
| 426 | metadata.blueZ = blueZ; | ||
| 427 | metadata.gammaRed = (int)gammaRed; | ||
| 428 | metadata.gammaGreen = (int)gammaGreen; | ||
| 429 | metadata.gammaBlue = (int)gammaBlue; | ||
| 430 | } | ||
| 431 | |||
| 432 | // Read in the palette | ||
| 433 | int numberOfEntries = (int)((bitmapOffset-14-size) / 4); | ||
| 434 | int sizeOfPalette = numberOfEntries*4; | ||
| 435 | palette = new byte[sizeOfPalette]; | ||
| 436 | iis.readFully(palette, 0, sizeOfPalette); | ||
| 437 | metadata.palette = palette; | ||
| 438 | metadata.paletteSize = numberOfEntries; | ||
| 439 | |||
| 440 | switch ((int)compression) { | ||
| 441 | case BI_JPEG: | ||
| 442 | case BI_PNG: | ||
| 443 | if (size == 108) { | ||
| 444 | imageType = VERSION_4_XP_EMBEDDED; | ||
| 445 | } else if (size == 124) { | ||
| 446 | imageType = VERSION_5_XP_EMBEDDED; | ||
| 447 | } | ||
| 448 | break; | ||
| 449 | default: | ||
| 450 | if (bitsPerPixel == 1) { | ||
| 451 | imageType = VERSION_4_1_BIT; | ||
| 452 | } else if (bitsPerPixel == 4) { | ||
| 453 | imageType = VERSION_4_4_BIT; | ||
| 454 | } else if (bitsPerPixel == 8) { | ||
| 455 | imageType = VERSION_4_8_BIT; | ||
| 456 | } else if (bitsPerPixel == 16) { | ||
| 457 | imageType = VERSION_4_16_BIT; | ||
| 458 | if ((int)compression == BI_RGB) { | ||
| 459 | redMask = 0x7C00; | ||
| 460 | greenMask = 0x3E0; | ||
| 461 | blueMask = 0x1F; | ||
| 462 | } | ||
| 463 | } else if (bitsPerPixel == 24) { | ||
| 464 | imageType = VERSION_4_24_BIT; | ||
| 465 | } else if (bitsPerPixel == 32) { | ||
| 466 | imageType = VERSION_4_32_BIT; | ||
| 467 | if ((int)compression == BI_RGB) { | ||
| 468 | redMask = 0x00FF0000; | ||
| 469 | greenMask = 0x0000FF00; | ||
| 470 | blueMask = 0x000000FF; | ||
| 471 | } | ||
| 472 | } | ||
| 473 | |||
| 474 | metadata.redMask = redMask; | ||
| 475 | metadata.greenMask = greenMask; | ||
| 476 | metadata.blueMask = blueMask; | ||
| 477 | metadata.alphaMask = alphaMask; | ||
| 478 | } | ||
| 479 | } else { | ||
| 480 | throw new | ||
| 481 | RuntimeException(I18N.getString("BMPImageReader3")); | ||
| 482 | } | ||
| 483 | } | ||
| 484 | |||
| 485 | if (height > 0) { | ||
| 486 | // bottom up image | ||
| 487 | isBottomUp = true; | ||
| 488 | } else { | ||
| 489 | // top down image | ||
| 490 | isBottomUp = false; | ||
| 491 | height = Math.abs(height); | ||
| 492 | } | ||
| 493 | |||
| 494 | // Reset Image Layout so there's only one tile. | ||
| 495 | //Define the color space | ||
| 496 | ColorSpace colorSpace = ColorSpace.getInstance(ColorSpace.CS_sRGB); | ||
| 497 | if (metadata.colorSpace == PROFILE_LINKED || | ||
| 498 | metadata.colorSpace == PROFILE_EMBEDDED) { | ||
| 499 | |||
| 500 | iis.mark(); | ||
| 501 | iis.skipBytes(profileData - size); | ||
| 502 | byte[] profile = new byte[profileSize]; | ||
| 503 | iis.readFully(profile, 0, profileSize); | ||
| 504 | iis.reset(); | ||
| 505 | |||
| 506 | try { | ||
| 507 | if (metadata.colorSpace == PROFILE_LINKED && | ||
| 508 | isLinkedProfileAllowed() && | ||
| 509 | !isUncOrDevicePath(profile)) | ||
| 510 | { | ||
| 511 | String path = new String(profile, "windows-1252"); | ||
| 512 | |||
| 513 | colorSpace = | ||
| 514 | new ICC_ColorSpace(ICC_Profile.getInstance(path)); | ||
| 515 | } else { | ||
| 516 | colorSpace = | ||
| 517 | new ICC_ColorSpace(ICC_Profile.getInstance(profile)); | ||
| 518 | } | ||
| 519 | } catch (Exception e) { | ||
| 520 | colorSpace = ColorSpace.getInstance(ColorSpace.CS_sRGB); | ||
| 521 | } | ||
| 522 | } | ||
| 523 | |||
| 524 | if (bitsPerPixel == 0 || | ||
| 525 | compression == BI_JPEG || compression == BI_PNG ) | ||
| 526 | { | ||
| 527 | // the colorModel and sampleModel will be initialzed | ||
| 528 | // by the reader of embedded image | ||
| 529 | colorModel = null; | ||
| 530 | sampleModel = null; | ||
| 531 | } else if (bitsPerPixel == 1 || bitsPerPixel == 4 || bitsPerPixel == 8) { | ||
| 532 | // When number of bitsPerPixel is <= 8, we use IndexColorModel. | ||
| 533 | numBands = 1; | ||
| 534 | |||
| 535 | if (bitsPerPixel == 8) { | ||
| 536 | int[] bandOffsets = new int[numBands]; | ||
| 537 | for (int i = 0; i < numBands; i++) { | ||
| 538 | bandOffsets[i] = numBands -1 -i; | ||
| 539 | } | ||
| 540 | sampleModel = | ||
| 541 | new PixelInterleavedSampleModel(DataBuffer.TYPE_BYTE, | ||
| 542 | width, height, | ||
| 543 | numBands, | ||
| 544 | numBands * width, | ||
| 545 | bandOffsets); | ||
| 546 | } else { | ||
| 547 | // 1 and 4 bit pixels can be stored in a packed format. | ||
| 548 | sampleModel = | ||
| 549 | new MultiPixelPackedSampleModel(DataBuffer.TYPE_BYTE, | ||
| 550 | width, height, | ||
| 551 | bitsPerPixel); | ||
| 552 | } | ||
| 553 | |||
| 554 | // Create IndexColorModel from the palette. | ||
| 555 | byte r[], g[], b[]; | ||
| 556 | if (imageType == VERSION_2_1_BIT || | ||
| 557 | imageType == VERSION_2_4_BIT || | ||
| 558 | imageType == VERSION_2_8_BIT) { | ||
| 559 | |||
| 560 | |||
| 561 | size = palette.length/3; | ||
| 562 | |||
| 563 | if (size > 256) { | ||
| 564 | size = 256; | ||
| 565 | } | ||
| 566 | |||
| 567 | int off; | ||
| 568 | r = new byte[(int)size]; | ||
| 569 | g = new byte[(int)size]; | ||
| 570 | b = new byte[(int)size]; | ||
| 571 | for (int i=0; i<(int)size; i++) { | ||
| 572 | off = 3 * i; | ||
| 573 | b[i] = palette[off]; | ||
| 574 | g[i] = palette[off+1]; | ||
| 575 | r[i] = palette[off+2]; | ||
| 576 | } | ||
| 577 | } else { | ||
| 578 | size = palette.length/4; | ||
| 579 | |||
| 580 | if (size > 256) { | ||
| 581 | size = 256; | ||
| 582 | } | ||
| 583 | |||
| 584 | int off; | ||
| 585 | r = new byte[(int)size]; | ||
| 586 | g = new byte[(int)size]; | ||
| 587 | b = new byte[(int)size]; | ||
| 588 | for (int i=0; i<size; i++) { | ||
| 589 | off = 4 * i; | ||
| 590 | b[i] = palette[off]; | ||
| 591 | g[i] = palette[off+1]; | ||
| 592 | r[i] = palette[off+2]; | ||
| 593 | } | ||
| 594 | } | ||
| 595 | |||
| 596 | if (ImageUtil.isIndicesForGrayscale(r, g, b)) | ||
| 597 | colorModel = | ||
| 598 | ImageUtil.createColorModel(null, sampleModel); | ||
| 599 | else | ||
| 600 | colorModel = new IndexColorModel(bitsPerPixel, (int)size, r, g, b); | ||
| 601 | } else if (bitsPerPixel == 16) { | ||
| 602 | numBands = 3; | ||
| 603 | sampleModel = | ||
| 604 | new SinglePixelPackedSampleModel(DataBuffer.TYPE_USHORT, | ||
| 605 | width, height, | ||
| 606 | new int[] {redMask, greenMask, blueMask}); | ||
| 607 | |||
| 608 | colorModel = | ||
| 609 | new DirectColorModel(colorSpace, | ||
| 610 | 16, redMask, greenMask, blueMask, 0, | ||
| 611 | false, DataBuffer.TYPE_USHORT); | ||
| 612 | |||
| 613 | } else if (bitsPerPixel == 32) { | ||
| 614 | numBands = alphaMask == 0 ? 3 : 4; | ||
| 615 | |||
| 616 | // The number of bands in the SampleModel is determined by | ||
| 617 | // the length of the mask array passed in. | ||
| 618 | int[] bitMasks = numBands == 3 ? | ||
| 619 | new int[] {redMask, greenMask, blueMask} : | ||
| 620 | new int[] {redMask, greenMask, blueMask, alphaMask}; | ||
| 621 | |||
| 622 | sampleModel = | ||
| 623 | new SinglePixelPackedSampleModel(DataBuffer.TYPE_INT, | ||
| 624 | width, height, | ||
| 625 | bitMasks); | ||
| 626 | |||
| 627 | colorModel = | ||
| 628 | new DirectColorModel(colorSpace, | ||
| 629 | 32, redMask, greenMask, blueMask, alphaMask, | ||
| 630 | false, DataBuffer.TYPE_INT); | ||
| 631 | } else { | ||
| 632 | numBands = 3; | ||
| 633 | // Create SampleModel | ||
| 634 | int[] bandOffsets = new int[numBands]; | ||
| 635 | for (int i = 0; i < numBands; i++) { | ||
| 636 | bandOffsets[i] = numBands -1 -i; | ||
| 637 | } | ||
| 638 | |||
| 639 | sampleModel = | ||
| 640 | new PixelInterleavedSampleModel(DataBuffer.TYPE_BYTE, | ||
| 641 | width, height, | ||
| 642 | numBands, | ||
| 643 | numBands * width, | ||
| 644 | bandOffsets); | ||
| 645 | |||
| 646 | colorModel = | ||
| 647 | ImageUtil.createColorModel(colorSpace, sampleModel); | ||
| 648 | } | ||
| 649 | |||
| 650 | originalSampleModel = sampleModel; | ||
| 651 | originalColorModel = colorModel; | ||
| 652 | |||
| 653 | // Reset to the start of bitmap; then jump to the | ||
| 654 | //start of image data | ||
| 655 | iis.reset(); | ||
| 656 | iis.skipBytes(bitmapOffset); | ||
| 657 | gotHeader = true; | ||
| 658 | } | ||
| 659 | |||
| 660 | public Iterator getImageTypes(int imageIndex) | ||
| 661 | throws IOException { | ||
| 662 | checkIndex(imageIndex); | ||
| 663 | readHeader(); | ||
| 664 | ArrayList list = new ArrayList(1); | ||
| 665 | list.add(new ImageTypeSpecifier(originalColorModel, | ||
| 666 | originalSampleModel)); | ||
| 667 | return list.iterator(); | ||
| 668 | } | ||
| 669 | |||
| 670 | public ImageReadParam getDefaultReadParam() { | ||
| 671 | return new ImageReadParam(); | ||
| 672 | } | ||
| 673 | |||
| 674 | public IIOMetadata getImageMetadata(int imageIndex) | ||
| 675 | throws IOException { | ||
| 676 | checkIndex(imageIndex); | ||
| 677 | if (metadata == null) { | ||
| 678 | readHeader(); | ||
| 679 | } | ||
| 680 | return metadata; | ||
| 681 | } | ||
| 682 | |||
| 683 | public IIOMetadata getStreamMetadata() throws IOException { | ||
| 684 | return null; | ||
| 685 | } | ||
| 686 | |||
| 687 | public boolean isRandomAccessEasy(int imageIndex) throws IOException { | ||
| 688 | checkIndex(imageIndex); | ||
| 689 | readHeader(); | ||
| 690 | return metadata.compression == BI_RGB; | ||
| 691 | } | ||
| 692 | |||
| 693 | public BufferedImage read(int imageIndex, ImageReadParam param) | ||
| 694 | throws IOException { | ||
| 695 | |||
| 696 | if (iis == null) { | ||
| 697 | throw new IllegalStateException(I18N.getString("BMPImageReader5")); | ||
| 698 | } | ||
| 699 | |||
| 700 | checkIndex(imageIndex); | ||
| 701 | clearAbortRequest(); | ||
| 702 | processImageStarted(imageIndex); | ||
| 703 | |||
| 704 | if (param == null) | ||
| 705 | param = getDefaultReadParam(); | ||
| 706 | |||
| 707 | //read header | ||
| 708 | readHeader(); | ||
| 709 | |||
| 710 | sourceRegion = new Rectangle(0, 0, 0, 0); | ||
| 711 | destinationRegion = new Rectangle(0, 0, 0, 0); | ||
| 712 | |||
| 713 | computeRegions(param, this.width, this.height, | ||
| 714 | param.getDestination(), | ||
| 715 | sourceRegion, | ||
| 716 | destinationRegion); | ||
| 717 | |||
| 718 | scaleX = param.getSourceXSubsampling(); | ||
| 719 | scaleY = param.getSourceYSubsampling(); | ||
| 720 | |||
| 721 | // If the destination band is set used it | ||
| 722 | sourceBands = param.getSourceBands(); | ||
| 723 | destBands = param.getDestinationBands(); | ||
| 724 | |||
| 725 | seleBand = (sourceBands != null) && (destBands != null); | ||
| 726 | noTransform = | ||
| 727 | destinationRegion.equals(new Rectangle(0, 0, width, height)) || | ||
| 728 | seleBand; | ||
| 729 | |||
| 730 | if (!seleBand) { | ||
| 731 | sourceBands = new int[numBands]; | ||
| 732 | destBands = new int[numBands]; | ||
| 733 | for (int i = 0; i < numBands; i++) | ||
| 734 | destBands[i] = sourceBands[i] = i; | ||
| 735 | } | ||
| 736 | |||
| 737 | // If the destination is provided, then use it. Otherwise, create new one | ||
| 738 | bi = param.getDestination(); | ||
| 739 | |||
| 740 | // Get the image data. | ||
| 741 | WritableRaster raster = null; | ||
| 742 | |||
| 743 | if (bi == null) { | ||
| 744 | if (sampleModel != null && colorModel != null) { | ||
| 745 | sampleModel = | ||
| 746 | sampleModel.createCompatibleSampleModel(destinationRegion.x + | ||
| 747 | destinationRegion.width, | ||
| 748 | destinationRegion.y + | ||
| 749 | destinationRegion.height); | ||
| 750 | if (seleBand) | ||
| 751 | sampleModel = sampleModel.createSubsetSampleModel(sourceBands); | ||
| 752 | raster = Raster.createWritableRaster(sampleModel, new Point()); | ||
| 753 | bi = new BufferedImage(colorModel, raster, false, null); | ||
| 754 | } | ||
| 755 | } else { | ||
| 756 | raster = bi.getWritableTile(0, 0); | ||
| 757 | sampleModel = bi.getSampleModel(); | ||
| 758 | colorModel = bi.getColorModel(); | ||
| 759 | |||
| 760 | noTransform &= destinationRegion.equals(raster.getBounds()); | ||
| 761 | } | ||
| 762 | |||
| 763 | byte bdata[] = null; // buffer for byte data | ||
| 764 | short sdata[] = null; // buffer for short data | ||
| 765 | int idata[] = null; // buffer for int data | ||
| 766 | |||
| 767 | // the sampleModel can be null in case of embedded image | ||
| 768 | if (sampleModel != null) { | ||
| 769 | if (sampleModel.getDataType() == DataBuffer.TYPE_BYTE) | ||
| 770 | bdata = (byte[]) | ||
| 771 | ((DataBufferByte)raster.getDataBuffer()).getData(); | ||
| 772 | else if (sampleModel.getDataType() == DataBuffer.TYPE_USHORT) | ||
| 773 | sdata = (short[]) | ||
| 774 | ((DataBufferUShort)raster.getDataBuffer()).getData(); | ||
| 775 | else if (sampleModel.getDataType() == DataBuffer.TYPE_INT) | ||
| 776 | idata = (int[]) | ||
| 777 | ((DataBufferInt)raster.getDataBuffer()).getData(); | ||
| 778 | } | ||
| 779 | |||
| 780 | // There should only be one tile. | ||
| 781 | switch(imageType) { | ||
| 782 | |||
| 783 | case VERSION_2_1_BIT: | ||
| 784 | // no compression | ||
| 785 | read1Bit(bdata); | ||
| 786 | break; | ||
| 787 | |||
| 788 | case VERSION_2_4_BIT: | ||
| 789 | // no compression | ||
| 790 | read4Bit(bdata); | ||
| 791 | break; | ||
| 792 | |||
| 793 | case VERSION_2_8_BIT: | ||
| 794 | // no compression | ||
| 795 | read8Bit(bdata); | ||
| 796 | break; | ||
| 797 | |||
| 798 | case VERSION_2_24_BIT: | ||
| 799 | // no compression | ||
| 800 | read24Bit(bdata); | ||
| 801 | break; | ||
| 802 | |||
| 803 | case VERSION_3_1_BIT: | ||
| 804 | // 1-bit images cannot be compressed. | ||
| 805 | read1Bit(bdata); | ||
| 806 | break; | ||
| 807 | |||
| 808 | case VERSION_3_4_BIT: | ||
| 809 | switch((int)compression) { | ||
| 810 | case BI_RGB: | ||
| 811 | read4Bit(bdata); | ||
| 812 | break; | ||
| 813 | |||
| 814 | case BI_RLE4: | ||
| 815 | readRLE4(bdata); | ||
| 816 | break; | ||
| 817 | |||
| 818 | default: | ||
| 819 | throw new | ||
| 820 | RuntimeException(I18N.getString("BMPImageReader1")); | ||
| 821 | } | ||
| 822 | break; | ||
| 823 | |||
| 824 | case VERSION_3_8_BIT: | ||
| 825 | switch((int)compression) { | ||
| 826 | case BI_RGB: | ||
| 827 | read8Bit(bdata); | ||
| 828 | break; | ||
| 829 | |||
| 830 | case BI_RLE8: | ||
| 831 | readRLE8(bdata); | ||
| 832 | break; | ||
| 833 | |||
| 834 | default: | ||
| 835 | throw new | ||
| 836 | RuntimeException(I18N.getString("BMPImageReader1")); | ||
| 837 | } | ||
| 838 | |||
| 839 | break; | ||
| 840 | |||
| 841 | case VERSION_3_24_BIT: | ||
| 842 | // 24-bit images are not compressed | ||
| 843 | read24Bit(bdata); | ||
| 844 | break; | ||
| 845 | |||
| 846 | case VERSION_3_NT_16_BIT: | ||
| 847 | read16Bit(sdata); | ||
| 848 | break; | ||
| 849 | |||
| 850 | case VERSION_3_NT_32_BIT: | ||
| 851 | read32Bit(idata); | ||
| 852 | break; | ||
| 853 | |||
| 854 | case VERSION_3_XP_EMBEDDED: | ||
| 855 | case VERSION_4_XP_EMBEDDED: | ||
| 856 | case VERSION_5_XP_EMBEDDED: | ||
| 857 | bi = readEmbedded((int)compression, bi, param); | ||
| 858 | break; | ||
| 859 | |||
| 860 | case VERSION_4_1_BIT: | ||
| 861 | read1Bit(bdata); | ||
| 862 | break; | ||
| 863 | |||
| 864 | case VERSION_4_4_BIT: | ||
| 865 | switch((int)compression) { | ||
| 866 | |||
| 867 | case BI_RGB: | ||
| 868 | read4Bit(bdata); | ||
| 869 | break; | ||
| 870 | |||
| 871 | case BI_RLE4: | ||
| 872 | readRLE4(bdata); | ||
| 873 | break; | ||
| 874 | |||
| 875 | default: | ||
| 876 | throw new | ||
| 877 | RuntimeException(I18N.getString("BMPImageReader1")); | ||
| 878 | } | ||
| 879 | |||
| 880 | case VERSION_4_8_BIT: | ||
| 881 | switch((int)compression) { | ||
| 882 | |||
| 883 | case BI_RGB: | ||
| 884 | read8Bit(bdata); | ||
| 885 | break; | ||
| 886 | |||
| 887 | case BI_RLE8: | ||
| 888 | readRLE8(bdata); | ||
| 889 | break; | ||
| 890 | |||
| 891 | default: | ||
| 892 | throw new | ||
| 893 | RuntimeException(I18N.getString("BMPImageReader1")); | ||
| 894 | } | ||
| 895 | break; | ||
| 896 | |||
| 897 | case VERSION_4_16_BIT: | ||
| 898 | read16Bit(sdata); | ||
| 899 | break; | ||
| 900 | |||
| 901 | case VERSION_4_24_BIT: | ||
| 902 | read24Bit(bdata); | ||
| 903 | break; | ||
| 904 | |||
| 905 | case VERSION_4_32_BIT: | ||
| 906 | read32Bit(idata); | ||
| 907 | break; | ||
| 908 | } | ||
| 909 | |||
| 910 | if (abortRequested()) | ||
| 911 | processReadAborted(); | ||
| 912 | else | ||
| 913 | processImageComplete(); | ||
| 914 | |||
| 915 | return bi; | ||
| 916 | } | ||
| 917 | |||
| 918 | public boolean canReadRaster() { | ||
| 919 | return true; | ||
| 920 | } | ||
| 921 | |||
| 922 | public Raster readRaster(int imageIndex, | ||
| 923 | ImageReadParam param) throws IOException { | ||
| 924 | BufferedImage bi = read(imageIndex, param); | ||
| 925 | return bi.getData(); | ||
| 926 | } | ||
| 927 | |||
| 928 | private void resetHeaderInfo() { | ||
| 929 | gotHeader = false; | ||
| 930 | bi = null; | ||
| 931 | sampleModel = originalSampleModel = null; | ||
| 932 | colorModel = originalColorModel = null; | ||
| 933 | } | ||
| 934 | |||
| 935 | public void reset() { | ||
| 936 | super.reset(); | ||
| 937 | iis = null; | ||
| 938 | resetHeaderInfo(); | ||
| 939 | } | ||
| 940 | |||
| 941 | // Deal with 1 Bit images using IndexColorModels | ||
| 942 | private void read1Bit(byte[] bdata) throws IOException { | ||
| 943 | int bytesPerScanline = (width + 7) / 8; | ||
| 944 | int padding = bytesPerScanline % 4; | ||
| 945 | if (padding != 0) { | ||
| 946 | padding = 4 - padding; | ||
| 947 | } | ||
| 948 | |||
| 949 | int lineLength = bytesPerScanline + padding; | ||
| 950 | |||
| 951 | if (noTransform) { | ||
| 952 | int j = isBottomUp ? (height -1)*bytesPerScanline : 0; | ||
| 953 | |||
| 954 | for (int i=0; i<height; i++) { | ||
| 955 | if (abortRequested()) { | ||
| 956 | break; | ||
| 957 | } | ||
| 958 | iis.readFully(bdata, j, bytesPerScanline); | ||
| 959 | iis.skipBytes(padding); | ||
| 960 | j += isBottomUp ? -bytesPerScanline : bytesPerScanline; | ||
| 961 | processImageUpdate(bi, 0, i, | ||
| 962 | destinationRegion.width, 1, 1, 1, | ||
| 963 | new int[]{0}); | ||
| 964 | processImageProgress(100.0F * i/destinationRegion.height); | ||
| 965 | } | ||
| 966 | } else { | ||
| 967 | byte[] buf = new byte[lineLength]; | ||
| 968 | int lineStride = | ||
| 969 | ((MultiPixelPackedSampleModel)sampleModel).getScanlineStride(); | ||
| 970 | |||
| 971 | if (isBottomUp) { | ||
| 972 | int lastLine = | ||
| 973 | sourceRegion.y + (destinationRegion.height - 1) * scaleY; | ||
| 974 | iis.skipBytes(lineLength * (height - 1 - lastLine)); | ||
| 975 | } else | ||
| 976 | iis.skipBytes(lineLength * sourceRegion.y); | ||
| 977 | |||
| 978 | int skipLength = lineLength * (scaleY - 1); | ||
| 979 | |||
| 980 | // cache the values to avoid duplicated computation | ||
| 981 | int[] srcOff = new int[destinationRegion.width]; | ||
| 982 | int[] destOff = new int[destinationRegion.width]; | ||
| 983 | int[] srcPos = new int[destinationRegion.width]; | ||
| 984 | int[] destPos = new int[destinationRegion.width]; | ||
| 985 | |||
| 986 | for (int i = destinationRegion.x, x = sourceRegion.x, j = 0; | ||
| 987 | i < destinationRegion.x + destinationRegion.width; | ||
| 988 | i++, j++, x += scaleX) { | ||
| 989 | srcPos[j] = x >> 3; | ||
| 990 | srcOff[j] = 7 - (x & 7); | ||
| 991 | destPos[j] = i >> 3; | ||
| 992 | destOff[j] = 7 - (i & 7); | ||
| 993 | } | ||
| 994 | |||
| 995 | int k = destinationRegion.y * lineStride; | ||
| 996 | if (isBottomUp) | ||
| 997 | k += (destinationRegion.height - 1) * lineStride; | ||
| 998 | |||
| 999 | for (int j = 0, y = sourceRegion.y; | ||
| 1000 | j < destinationRegion.height; j++, y+=scaleY) { | ||
| 1001 | |||
| 1002 | if (abortRequested()) | ||
| 1003 | break; | ||
| 1004 | iis.read(buf, 0, lineLength); | ||
| 1005 | for (int i = 0; i < destinationRegion.width; i++) { | ||
| 1006 | //get the bit and assign to the data buffer of the raster | ||
| 1007 | int v = (buf[srcPos[i]] >> srcOff[i]) & 1; | ||
| 1008 | bdata[k + destPos[i]] |= v << destOff[i]; | ||
| 1009 | } | ||
| 1010 | |||
| 1011 | k += isBottomUp ? -lineStride : lineStride; | ||
| 1012 | iis.skipBytes(skipLength); | ||
| 1013 | processImageUpdate(bi, 0, j, | ||
| 1014 | destinationRegion.width, 1, 1, 1, | ||
| 1015 | new int[]{0}); | ||
| 1016 | processImageProgress(100.0F*j/destinationRegion.height); | ||
| 1017 | } | ||
| 1018 | } | ||
| 1019 | } | ||
| 1020 | |||
| 1021 | // Method to read a 4 bit BMP image data | ||
| 1022 | private void read4Bit(byte[] bdata) throws IOException { | ||
| 1023 | |||
| 1024 | int bytesPerScanline = (width + 1) / 2; | ||
| 1025 | |||
| 1026 | // Padding bytes at the end of each scanline | ||
| 1027 | int padding = bytesPerScanline % 4; | ||
| 1028 | if (padding != 0) | ||
| 1029 | padding = 4 - padding; | ||
| 1030 | |||
| 1031 | int lineLength = bytesPerScanline + padding; | ||
| 1032 | |||
| 1033 | if (noTransform) { | ||
| 1034 | int j = isBottomUp ? (height -1) * bytesPerScanline : 0; | ||
| 1035 | |||
| 1036 | for (int i=0; i<height; i++) { | ||
| 1037 | if (abortRequested()) { | ||
| 1038 | break; | ||
| 1039 | } | ||
| 1040 | iis.readFully(bdata, j, bytesPerScanline); | ||
| 1041 | iis.skipBytes(padding); | ||
| 1042 | j += isBottomUp ? -bytesPerScanline : bytesPerScanline; | ||
| 1043 | processImageUpdate(bi, 0, i, | ||
| 1044 | destinationRegion.width, 1, 1, 1, | ||
| 1045 | new int[]{0}); | ||
| 1046 | processImageProgress(100.0F * i/destinationRegion.height); | ||
| 1047 | } | ||
| 1048 | } else { | ||
| 1049 | byte[] buf = new byte[lineLength]; | ||
| 1050 | int lineStride = | ||
| 1051 | ((MultiPixelPackedSampleModel)sampleModel).getScanlineStride(); | ||
| 1052 | |||
| 1053 | if (isBottomUp) { | ||
| 1054 | int lastLine = | ||
| 1055 | sourceRegion.y + (destinationRegion.height - 1) * scaleY; | ||
| 1056 | iis.skipBytes(lineLength * (height - 1 - lastLine)); | ||
| 1057 | } else | ||
| 1058 | iis.skipBytes(lineLength * sourceRegion.y); | ||
| 1059 | |||
| 1060 | int skipLength = lineLength * (scaleY - 1); | ||
| 1061 | |||
| 1062 | // cache the values to avoid duplicated computation | ||
| 1063 | int[] srcOff = new int[destinationRegion.width]; | ||
| 1064 | int[] destOff = new int[destinationRegion.width]; | ||
| 1065 | int[] srcPos = new int[destinationRegion.width]; | ||
| 1066 | int[] destPos = new int[destinationRegion.width]; | ||
| 1067 | |||
| 1068 | for (int i = destinationRegion.x, x = sourceRegion.x, j = 0; | ||
| 1069 | i < destinationRegion.x + destinationRegion.width; | ||
| 1070 | i++, j++, x += scaleX) { | ||
| 1071 | srcPos[j] = x >> 1; | ||
| 1072 | srcOff[j] = (1 - (x & 1)) << 2; | ||
| 1073 | destPos[j] = i >> 1; | ||
| 1074 | destOff[j] = (1 - (i & 1)) << 2; | ||
| 1075 | } | ||
| 1076 | |||
| 1077 | int k = destinationRegion.y * lineStride; | ||
| 1078 | if (isBottomUp) | ||
| 1079 | k += (destinationRegion.height - 1) * lineStride; | ||
| 1080 | |||
| 1081 | for (int j = 0, y = sourceRegion.y; | ||
| 1082 | j < destinationRegion.height; j++, y+=scaleY) { | ||
| 1083 | |||
| 1084 | if (abortRequested()) | ||
| 1085 | break; | ||
| 1086 | iis.read(buf, 0, lineLength); | ||
| 1087 | for (int i = 0; i < destinationRegion.width; i++) { | ||
| 1088 | //get the bit and assign to the data buffer of the raster | ||
| 1089 | int v = (buf[srcPos[i]] >> srcOff[i]) & 0x0F; | ||
| 1090 | bdata[k + destPos[i]] |= v << destOff[i]; | ||
| 1091 | } | ||
| 1092 | |||
| 1093 | k += isBottomUp ? -lineStride : lineStride; | ||
| 1094 | iis.skipBytes(skipLength); | ||
| 1095 | processImageUpdate(bi, 0, j, | ||
| 1096 | destinationRegion.width, 1, 1, 1, | ||
| 1097 | new int[]{0}); | ||
| 1098 | processImageProgress(100.0F*j/destinationRegion.height); | ||
| 1099 | } | ||
| 1100 | } | ||
| 1101 | } | ||
| 1102 | |||
| 1103 | // Method to read 8 bit BMP image data | ||
| 1104 | private void read8Bit(byte[] bdata) throws IOException { | ||
| 1105 | |||
| 1106 | // Padding bytes at the end of each scanline | ||
| 1107 | int padding = width % 4; | ||
| 1108 | if (padding != 0) { | ||
| 1109 | padding = 4 - padding; | ||
| 1110 | } | ||
| 1111 | |||
| 1112 | int lineLength = width + padding; | ||
| 1113 | |||
| 1114 | if (noTransform) { | ||
| 1115 | int j = isBottomUp ? (height -1) * width : 0; | ||
| 1116 | |||
| 1117 | for (int i=0; i<height; i++) { | ||
| 1118 | if (abortRequested()) { | ||
| 1119 | break; | ||
| 1120 | } | ||
| 1121 | iis.readFully(bdata, j, width); | ||
| 1122 | iis.skipBytes(padding); | ||
| 1123 | j += isBottomUp ? -width : width; | ||
| 1124 | processImageUpdate(bi, 0, i, | ||
| 1125 | destinationRegion.width, 1, 1, 1, | ||
| 1126 | new int[]{0}); | ||
| 1127 | processImageProgress(100.0F * i/destinationRegion.height); | ||
| 1128 | } | ||
| 1129 | } else { | ||
| 1130 | byte[] buf = new byte[lineLength]; | ||
| 1131 | int lineStride = | ||
| 1132 | ((ComponentSampleModel)sampleModel).getScanlineStride(); | ||
| 1133 | |||
| 1134 | if (isBottomUp) { | ||
| 1135 | int lastLine = | ||
| 1136 | sourceRegion.y + (destinationRegion.height - 1) * scaleY; | ||
| 1137 | iis.skipBytes(lineLength * (height - 1 - lastLine)); | ||
| 1138 | } else | ||
| 1139 | iis.skipBytes(lineLength * sourceRegion.y); | ||
| 1140 | |||
| 1141 | int skipLength = lineLength * (scaleY - 1); | ||
| 1142 | |||
| 1143 | int k = destinationRegion.y * lineStride; | ||
| 1144 | if (isBottomUp) | ||
| 1145 | k += (destinationRegion.height - 1) * lineStride; | ||
| 1146 | k += destinationRegion.x; | ||
| 1147 | |||
| 1148 | for (int j = 0, y = sourceRegion.y; | ||
| 1149 | j < destinationRegion.height; j++, y+=scaleY) { | ||
| 1150 | |||
| 1151 | if (abortRequested()) | ||
| 1152 | break; | ||
| 1153 | iis.read(buf, 0, lineLength); | ||
| 1154 | for (int i = 0, m = sourceRegion.x; | ||
| 1155 | i < destinationRegion.width; i++, m += scaleX) { | ||
| 1156 | //get the bit and assign to the data buffer of the raster | ||
| 1157 | bdata[k + i] = buf[m]; | ||
| 1158 | } | ||
| 1159 | |||
| 1160 | k += isBottomUp ? -lineStride : lineStride; | ||
| 1161 | iis.skipBytes(skipLength); | ||
| 1162 | processImageUpdate(bi, 0, j, | ||
| 1163 | destinationRegion.width, 1, 1, 1, | ||
| 1164 | new int[]{0}); | ||
| 1165 | processImageProgress(100.0F*j/destinationRegion.height); | ||
| 1166 | } | ||
| 1167 | } | ||
| 1168 | } | ||
| 1169 | |||
| 1170 | // Method to read 24 bit BMP image data | ||
| 1171 | private void read24Bit(byte[] bdata) throws IOException { | ||
| 1172 | // Padding bytes at the end of each scanline | ||
| 1173 | // width * bitsPerPixel should be divisible by 32 | ||
| 1174 | int padding = width * 3 % 4; | ||
| 1175 | if ( padding != 0) | ||
| 1176 | padding = 4 - padding; | ||
| 1177 | |||
| 1178 | int lineStride = width * 3; | ||
| 1179 | int lineLength = lineStride + padding; | ||
| 1180 | |||
| 1181 | if (noTransform) { | ||
| 1182 | int j = isBottomUp ? (height -1) * width * 3 : 0; | ||
| 1183 | |||
| 1184 | for (int i=0; i<height; i++) { | ||
| 1185 | if (abortRequested()) { | ||
| 1186 | break; | ||
| 1187 | } | ||
| 1188 | iis.readFully(bdata, j, lineStride); | ||
| 1189 | iis.skipBytes(padding); | ||
| 1190 | j += isBottomUp ? -lineStride : lineStride; | ||
| 1191 | processImageUpdate(bi, 0, i, | ||
| 1192 | destinationRegion.width, 1, 1, 1, | ||
| 1193 | new int[]{0}); | ||
| 1194 | processImageProgress(100.0F * i/destinationRegion.height); | ||
| 1195 | } | ||
| 1196 | } else { | ||
| 1197 | byte[] buf = new byte[lineLength]; | ||
| 1198 | lineStride = | ||
| 1199 | ((ComponentSampleModel)sampleModel).getScanlineStride(); | ||
| 1200 | |||
| 1201 | if (isBottomUp) { | ||
| 1202 | int lastLine = | ||
| 1203 | sourceRegion.y + (destinationRegion.height - 1) * scaleY; | ||
| 1204 | iis.skipBytes(lineLength * (height - 1 - lastLine)); | ||
| 1205 | } else | ||
| 1206 | iis.skipBytes(lineLength * sourceRegion.y); | ||
| 1207 | |||
| 1208 | int skipLength = lineLength * (scaleY - 1); | ||
| 1209 | |||
| 1210 | int k = destinationRegion.y * lineStride; | ||
| 1211 | if (isBottomUp) | ||
| 1212 | k += (destinationRegion.height - 1) * lineStride; | ||
| 1213 | k += destinationRegion.x * 3; | ||
| 1214 | |||
| 1215 | for (int j = 0, y = sourceRegion.y; | ||
| 1216 | j < destinationRegion.height; j++, y+=scaleY) { | ||
| 1217 | |||
| 1218 | if (abortRequested()) | ||
| 1219 | break; | ||
| 1220 | iis.read(buf, 0, lineLength); | ||
| 1221 | for (int i = 0, m = 3 * sourceRegion.x; | ||
| 1222 | i < destinationRegion.width; i++, m += 3 * scaleX) { | ||
| 1223 | //get the bit and assign to the data buffer of the raster | ||
| 1224 | int n = 3 * i + k; | ||
| 1225 | for (int b = 0; b < destBands.length; b++) | ||
| 1226 | bdata[n + destBands[b]] = buf[m + sourceBands[b]]; | ||
| 1227 | } | ||
| 1228 | |||
| 1229 | k += isBottomUp ? -lineStride : lineStride; | ||
| 1230 | iis.skipBytes(skipLength); | ||
| 1231 | processImageUpdate(bi, 0, j, | ||
| 1232 | destinationRegion.width, 1, 1, 1, | ||
| 1233 | new int[]{0}); | ||
| 1234 | processImageProgress(100.0F*j/destinationRegion.height); | ||
| 1235 | } | ||
| 1236 | } | ||
| 1237 | } | ||
| 1238 | |||
| 1239 | private void read16Bit(short sdata[]) throws IOException { | ||
| 1240 | // Padding bytes at the end of each scanline | ||
| 1241 | // width * bitsPerPixel should be divisible by 32 | ||
| 1242 | int padding = width * 2 % 4; | ||
| 1243 | |||
| 1244 | if ( padding != 0) | ||
| 1245 | padding = 4 - padding; | ||
| 1246 | |||
| 1247 | int lineLength = width + padding / 2; | ||
| 1248 | |||
| 1249 | if (noTransform) { | ||
| 1250 | int j = isBottomUp ? (height -1) * width : 0; | ||
| 1251 | for (int i=0; i<height; i++) { | ||
| 1252 | if (abortRequested()) { | ||
| 1253 | break; | ||
| 1254 | } | ||
| 1255 | |||
| 1256 | iis.readFully(sdata, j, width); | ||
| 1257 | iis.skipBytes(padding); | ||
| 1258 | |||
| 1259 | j += isBottomUp ? -width : width; | ||
| 1260 | processImageUpdate(bi, 0, i, | ||
| 1261 | destinationRegion.width, 1, 1, 1, | ||
| 1262 | new int[]{0}); | ||
| 1263 | processImageProgress(100.0F * i/destinationRegion.height); | ||
| 1264 | } | ||
| 1265 | } else { | ||
| 1266 | short[] buf = new short[lineLength]; | ||
| 1267 | int lineStride = | ||
| 1268 | ((SinglePixelPackedSampleModel)sampleModel).getScanlineStride(); | ||
| 1269 | |||
| 1270 | if (isBottomUp) { | ||
| 1271 | int lastLine = | ||
| 1272 | sourceRegion.y + (destinationRegion.height - 1) * scaleY; | ||
| 1273 | iis.skipBytes(lineLength * (height - 1 - lastLine) << 1); | ||
| 1274 | } else | ||
| 1275 | iis.skipBytes(lineLength * sourceRegion.y << 1); | ||
| 1276 | |||
| 1277 | int skipLength = lineLength * (scaleY - 1) << 1; | ||
| 1278 | |||
| 1279 | int k = destinationRegion.y * lineStride; | ||
| 1280 | if (isBottomUp) | ||
| 1281 | k += (destinationRegion.height - 1) * lineStride; | ||
| 1282 | k += destinationRegion.x; | ||
| 1283 | |||
| 1284 | for (int j = 0, y = sourceRegion.y; | ||
| 1285 | j < destinationRegion.height; j++, y+=scaleY) { | ||
| 1286 | |||
| 1287 | if (abortRequested()) | ||
| 1288 | break; | ||
| 1289 | iis.readFully(buf, 0, lineLength); | ||
| 1290 | for (int i = 0, m = sourceRegion.x; | ||
| 1291 | i < destinationRegion.width; i++, m += scaleX) { | ||
| 1292 | //get the bit and assign to the data buffer of the raster | ||
| 1293 | sdata[k + i] = buf[m]; | ||
| 1294 | } | ||
| 1295 | |||
| 1296 | k += isBottomUp ? -lineStride : lineStride; | ||
| 1297 | iis.skipBytes(skipLength); | ||
| 1298 | processImageUpdate(bi, 0, j, | ||
| 1299 | destinationRegion.width, 1, 1, 1, | ||
| 1300 | new int[]{0}); | ||
| 1301 | processImageProgress(100.0F*j/destinationRegion.height); | ||
| 1302 | } | ||
| 1303 | } | ||
| 1304 | } | ||
| 1305 | |||
| 1306 | private void read32Bit(int idata[]) throws IOException { | ||
| 1307 | if (noTransform) { | ||
| 1308 | int j = isBottomUp ? (height -1) * width : 0; | ||
| 1309 | |||
| 1310 | for (int i=0; i<height; i++) { | ||
| 1311 | if (abortRequested()) { | ||
| 1312 | break; | ||
| 1313 | } | ||
| 1314 | iis.readFully(idata, j, width); | ||
| 1315 | j += isBottomUp ? -width : width; | ||
| 1316 | processImageUpdate(bi, 0, i, | ||
| 1317 | destinationRegion.width, 1, 1, 1, | ||
| 1318 | new int[]{0}); | ||
| 1319 | processImageProgress(100.0F * i/destinationRegion.height); | ||
| 1320 | } | ||
| 1321 | } else { | ||
| 1322 | int[] buf = new int[width]; | ||
| 1323 | int lineStride = | ||
| 1324 | ((SinglePixelPackedSampleModel)sampleModel).getScanlineStride(); | ||
| 1325 | |||
| 1326 | if (isBottomUp) { | ||
| 1327 | int lastLine = | ||
| 1328 | sourceRegion.y + (destinationRegion.height - 1) * scaleY; | ||
| 1329 | iis.skipBytes(width * (height - 1 - lastLine) << 2); | ||
| 1330 | } else | ||
| 1331 | iis.skipBytes(width * sourceRegion.y << 2); | ||
| 1332 | |||
| 1333 | int skipLength = width * (scaleY - 1) << 2; | ||
| 1334 | |||
| 1335 | int k = destinationRegion.y * lineStride; | ||
| 1336 | if (isBottomUp) | ||
| 1337 | k += (destinationRegion.height - 1) * lineStride; | ||
| 1338 | k += destinationRegion.x; | ||
| 1339 | |||
| 1340 | for (int j = 0, y = sourceRegion.y; | ||
| 1341 | j < destinationRegion.height; j++, y+=scaleY) { | ||
| 1342 | |||
| 1343 | if (abortRequested()) | ||
| 1344 | break; | ||
| 1345 | iis.readFully(buf, 0, width); | ||
| 1346 | for (int i = 0, m = sourceRegion.x; | ||
| 1347 | i < destinationRegion.width; i++, m += scaleX) { | ||
| 1348 | //get the bit and assign to the data buffer of the raster | ||
| 1349 | idata[k + i] = buf[m]; | ||
| 1350 | } | ||
| 1351 | |||
| 1352 | k += isBottomUp ? -lineStride : lineStride; | ||
| 1353 | iis.skipBytes(skipLength); | ||
| 1354 | processImageUpdate(bi, 0, j, | ||
| 1355 | destinationRegion.width, 1, 1, 1, | ||
| 1356 | new int[]{0}); | ||
| 1357 | processImageProgress(100.0F*j/destinationRegion.height); | ||
| 1358 | } | ||
| 1359 | } | ||
| 1360 | } | ||
| 1361 | |||
| 1362 | private void readRLE8(byte bdata[]) throws IOException { | ||
| 1363 | // If imageSize field is not provided, calculate it. | ||
| 1364 | int imSize = (int)imageSize; | ||
| 1365 | if (imSize == 0) { | ||
| 1366 | imSize = (int)(bitmapFileSize - bitmapOffset); | ||
| 1367 | } | ||
| 1368 | |||
| 1369 | int padding = 0; | ||
| 1370 | // If width is not 32 bit aligned, then while uncompressing each | ||
| 1371 | // scanline will have padding bytes, calculate the amount of padding | ||
| 1372 | int remainder = width % 4; | ||
| 1373 | if (remainder != 0) { | ||
| 1374 | padding = 4 - remainder; | ||
| 1375 | } | ||
| 1376 | |||
| 1377 | // Read till we have the whole image | ||
| 1378 | byte values[] = new byte[imSize]; | ||
| 1379 | int bytesRead = 0; | ||
| 1380 | iis.readFully(values, 0, imSize); | ||
| 1381 | |||
| 1382 | // Since data is compressed, decompress it | ||
| 1383 | decodeRLE8(imSize, padding, values, bdata); | ||
| 1384 | } | ||
| 1385 | |||
| 1386 | private void decodeRLE8(int imSize, | ||
| 1387 | int padding, | ||
| 1388 | byte[] values, | ||
| 1389 | byte[] bdata) throws IOException { | ||
| 1390 | |||
| 1391 | byte val[] = new byte[width * height]; | ||
| 1392 | int count = 0, l = 0; | ||
| 1393 | int value; | ||
| 1394 | boolean flag = false; | ||
| 1395 | int lineNo = isBottomUp ? height - 1 : 0; | ||
| 1396 | int lineStride = | ||
| 1397 | ((ComponentSampleModel)sampleModel).getScanlineStride(); | ||
| 1398 | int finished = 0; | ||
| 1399 | |||
| 1400 | while (count != imSize) { | ||
| 1401 | value = values[count++] & 0xff; | ||
| 1402 | if (value == 0) { | ||
| 1403 | switch(values[count++] & 0xff) { | ||
| 1404 | |||
| 1405 | case 0: | ||
| 1406 | // End-of-scanline marker | ||
| 1407 | if (lineNo >= sourceRegion.y && | ||
| 1408 | lineNo < sourceRegion.y + sourceRegion.height) { | ||
| 1409 | if (noTransform) { | ||
| 1410 | int pos = lineNo * width; | ||
| 1411 | for(int i = 0; i < width; i++) | ||
| 1412 | bdata[pos++] = val[i]; | ||
| 1413 | processImageUpdate(bi, 0, lineNo, | ||
| 1414 | destinationRegion.width, 1, 1, 1, | ||
| 1415 | new int[]{0}); | ||
| 1416 | finished++; | ||
| 1417 | } else if ((lineNo - sourceRegion.y) % scaleY == 0) { | ||
| 1418 | int currentLine = (lineNo - sourceRegion.y) / scaleY + | ||
| 1419 | destinationRegion.y; | ||
| 1420 | int pos = currentLine * lineStride; | ||
| 1421 | pos += destinationRegion.x; | ||
| 1422 | for (int i = sourceRegion.x; | ||
| 1423 | i < sourceRegion.x + sourceRegion.width; | ||
| 1424 | i += scaleX) | ||
| 1425 | bdata[pos++] = val[i]; | ||
| 1426 | processImageUpdate(bi, 0, currentLine, | ||
| 1427 | destinationRegion.width, 1, 1, 1, | ||
| 1428 | new int[]{0}); | ||
| 1429 | finished++; | ||
| 1430 | } | ||
| 1431 | } | ||
| 1432 | processImageProgress(100.0F * finished / destinationRegion.height); | ||
| 1433 | lineNo += isBottomUp ? -1 : 1; | ||
| 1434 | l = 0; | ||
| 1435 | |||
| 1436 | if (abortRequested()) { | ||
| 1437 | flag = true; | ||
| 1438 | } | ||
| 1439 | |||
| 1440 | break; | ||
| 1441 | |||
| 1442 | case 1: | ||
| 1443 | // End-of-RLE marker | ||
| 1444 | flag = true; | ||
| 1445 | break; | ||
| 1446 | |||
| 1447 | case 2: | ||
| 1448 | // delta or vector marker | ||
| 1449 | int xoff = values[count++] & 0xff; | ||
| 1450 | int yoff = values[count] & 0xff; | ||
| 1451 | // Move to the position xoff, yoff down | ||
| 1452 | l += xoff + yoff*width; | ||
| 1453 | break; | ||
| 1454 | |||
| 1455 | default: | ||
| 1456 | int end = values[count-1] & 0xff; | ||
| 1457 | for (int i=0; i<end; i++) { | ||
| 1458 | val[l++] = (byte)(values[count++] & 0xff); | ||
| 1459 | } | ||
| 1460 | |||
| 1461 | // Whenever end pixels can fit into odd number of bytes, | ||
| 1462 | // an extra padding byte will be present, so skip that. | ||
| 1463 | if ((end & 1) == 1) { | ||
| 1464 | count++; | ||
| 1465 | } | ||
| 1466 | } | ||
| 1467 | } else { | ||
| 1468 | for (int i=0; i<value; i++) { | ||
| 1469 | val[l++] = (byte)(values[count] & 0xff); | ||
| 1470 | } | ||
| 1471 | |||
| 1472 | count++; | ||
| 1473 | } | ||
| 1474 | |||
| 1475 | // If End-of-RLE data, then exit the while loop | ||
| 1476 | if (flag) { | ||
| 1477 | break; | ||
| 1478 | } | ||
| 1479 | } | ||
| 1480 | } | ||
| 1481 | |||
| 1482 | private void readRLE4(byte[] bdata) throws IOException { | ||
| 1483 | |||
| 1484 | // If imageSize field is not specified, calculate it. | ||
| 1485 | int imSize = (int)imageSize; | ||
| 1486 | if (imSize == 0) { | ||
| 1487 | imSize = (int)(bitmapFileSize - bitmapOffset); | ||
| 1488 | } | ||
| 1489 | |||
| 1490 | int padding = 0; | ||
| 1491 | // If width is not 32 byte aligned, then while uncompressing each | ||
| 1492 | // scanline will have padding bytes, calculate the amount of padding | ||
| 1493 | int remainder = width % 4; | ||
| 1494 | if (remainder != 0) { | ||
| 1495 | padding = 4 - remainder; | ||
| 1496 | } | ||
| 1497 | |||
| 1498 | // Read till we have the whole image | ||
| 1499 | byte[] values = new byte[imSize]; | ||
| 1500 | iis.readFully(values, 0, imSize); | ||
| 1501 | |||
| 1502 | // Decompress the RLE4 compressed data. | ||
| 1503 | decodeRLE4(imSize, padding, values, bdata); | ||
| 1504 | } | ||
| 1505 | |||
| 1506 | private void decodeRLE4(int imSize, | ||
| 1507 | int padding, | ||
| 1508 | byte[] values, | ||
| 1509 | byte[] bdata) throws IOException { | ||
| 1510 | byte[] val = new byte[width]; | ||
| 1511 | int count = 0, l = 0; | ||
| 1512 | int value; | ||
| 1513 | boolean flag = false; | ||
| 1514 | int lineNo = isBottomUp ? height - 1 : 0; | ||
| 1515 | int lineStride = | ||
| 1516 | ((MultiPixelPackedSampleModel)sampleModel).getScanlineStride(); | ||
| 1517 | int finished = 0; | ||
| 1518 | |||
| 1519 | while (count != imSize) { | ||
| 1520 | |||
| 1521 | value = values[count++] & 0xFF; | ||
| 1522 | if (value == 0) { | ||
| 1523 | |||
| 1524 | |||
| 1525 | // Absolute mode | ||
| 1526 | switch(values[count++] & 0xFF) { | ||
| 1527 | |||
| 1528 | case 0: | ||
| 1529 | // End-of-scanline marker | ||
| 1530 | // End-of-scanline marker | ||
| 1531 | if (lineNo >= sourceRegion.y && | ||
| 1532 | lineNo < sourceRegion.y + sourceRegion.height) { | ||
| 1533 | if (noTransform) { | ||
| 1534 | int pos = lineNo * (width + 1 >> 1); | ||
| 1535 | for(int i = 0, j = 0; i < width >> 1; i++) | ||
| 1536 | bdata[pos++] = | ||
| 1537 | (byte)((val[j++] << 4) | val[j++]); | ||
| 1538 | if ((width & 1) == 1) | ||
| 1539 | bdata[pos] |= val[width - 1] << 4; | ||
| 1540 | |||
| 1541 | processImageUpdate(bi, 0, lineNo, | ||
| 1542 | destinationRegion.width, 1, 1, 1, | ||
| 1543 | new int[]{0}); | ||
| 1544 | finished++; | ||
| 1545 | } else if ((lineNo - sourceRegion.y) % scaleY == 0) { | ||
| 1546 | int currentLine = (lineNo - sourceRegion.y) / scaleY + | ||
| 1547 | destinationRegion.y; | ||
| 1548 | int pos = currentLine * lineStride; | ||
| 1549 | pos += destinationRegion.x >> 1; | ||
| 1550 | int shift = (1 - (destinationRegion.x & 1)) << 2; | ||
| 1551 | for (int i = sourceRegion.x; | ||
| 1552 | i < sourceRegion.x + sourceRegion.width; | ||
| 1553 | i += scaleX) { | ||
| 1554 | bdata[pos] |= val[i] << shift; | ||
| 1555 | shift += 4; | ||
| 1556 | if (shift == 4) { | ||
| 1557 | pos++; | ||
| 1558 | } | ||
| 1559 | shift &= 7; | ||
| 1560 | } | ||
| 1561 | processImageUpdate(bi, 0, currentLine, | ||
| 1562 | destinationRegion.width, 1, 1, 1, | ||
| 1563 | new int[]{0}); | ||
| 1564 | finished++; | ||
| 1565 | } | ||
| 1566 | } | ||
| 1567 | processImageProgress(100.0F * finished / destinationRegion.height); | ||
| 1568 | lineNo += isBottomUp ? -1 : 1; | ||
| 1569 | l = 0; | ||
| 1570 | |||
| 1571 | if (abortRequested()) { | ||
| 1572 | flag = true; | ||
| 1573 | } | ||
| 1574 | |||
| 1575 | break; | ||
| 1576 | |||
| 1577 | case 1: | ||
| 1578 | // End-of-RLE marker | ||
| 1579 | flag = true; | ||
| 1580 | break; | ||
| 1581 | |||
| 1582 | case 2: | ||
| 1583 | // delta or vector marker | ||
| 1584 | int xoff = values[count++] & 0xFF; | ||
| 1585 | int yoff = values[count] & 0xFF; | ||
| 1586 | // Move to the position xoff, yoff down | ||
| 1587 | l += xoff + yoff*width; | ||
| 1588 | break; | ||
| 1589 | |||
| 1590 | default: | ||
| 1591 | int end = values[count-1] & 0xFF; | ||
| 1592 | for (int i=0; i<end; i++) { | ||
| 1593 | val[l++] = (byte)(((i & 1) == 0) ? (values[count] & 0xf0) >> 4 | ||
| 1594 | : (values[count++] & 0x0f)); | ||
| 1595 | } | ||
| 1596 | |||
| 1597 | // When end is odd, the above for loop does not | ||
| 1598 | // increment count, so do it now. | ||
| 1599 | if ((end & 1) == 1) { | ||
| 1600 | count++; | ||
| 1601 | } | ||
| 1602 | |||
| 1603 | // Whenever end pixels can fit into odd number of bytes, | ||
| 1604 | // an extra padding byte will be present, so skip that. | ||
| 1605 | if ((((int)Math.ceil(end/2)) & 1) ==1 ) { | ||
| 1606 | count++; | ||
| 1607 | } | ||
| 1608 | break; | ||
| 1609 | } | ||
| 1610 | } else { | ||
| 1611 | // Encoded mode | ||
| 1612 | int alternate[] = { (values[count] & 0xf0) >> 4, | ||
| 1613 | values[count] & 0x0f }; | ||
| 1614 | for (int i=0; (i < value) && (l < width); i++) { | ||
| 1615 | val[l++] = (byte)alternate[i & 1]; | ||
| 1616 | } | ||
| 1617 | |||
| 1618 | count++; | ||
| 1619 | } | ||
| 1620 | |||
| 1621 | // If End-of-RLE data, then exit the while loop | ||
| 1622 | if (flag) { | ||
| 1623 | break; | ||
| 1624 | } | ||
| 1625 | } | ||
| 1626 | } | ||
| 1627 | |||
| 1628 | /** Decodes the jpeg/png image embedded in the bitmap using any jpeg | ||
| 1629 | * ImageIO-style plugin. | ||
| 1630 | * | ||
| 1631 | * @param bi The destination <code>BufferedImage</code>. | ||
| 1632 | * @param bmpParam The <code>ImageReadParam</code> for decoding this | ||
| 1633 | * BMP image. The parameters for subregion, band selection and | ||
| 1634 | * subsampling are used in decoding the jpeg image. | ||
| 1635 | */ | ||
| 1636 | |||
| 1637 | private BufferedImage readEmbedded(int type, | ||
| 1638 | BufferedImage bi, ImageReadParam bmpParam) | ||
| 1639 | throws IOException { | ||
| 1640 | String format; | ||
| 1641 | switch(type) { | ||
| 1642 | case BI_JPEG: | ||
| 1643 | format = "JPEG"; | ||
| 1644 | break; | ||
| 1645 | case BI_PNG: | ||
| 1646 | format = "PNG"; | ||
| 1647 | break; | ||
| 1648 | default: | ||
| 1649 | throw new | ||
| 1650 | IOException("Unexpected compression type: " + type); | ||
| 1651 | } | ||
| 1652 | ImageReader reader = | ||
| 1653 | ImageIO.getImageReadersByFormatName(format).next(); | ||
| 1654 | if (reader == null) { | ||
| 1655 | throw new RuntimeException(I18N.getString("BMPImageReader4") + | ||
| 1656 | " " + format); | ||
| 1657 | } | ||
| 1658 | // prepare input | ||
| 1659 | byte[] buff = new byte[(int)imageSize]; | ||
| 1660 | iis.read(buff); | ||
| 1661 | reader.setInput(ImageIO.createImageInputStream(new ByteArrayInputStream(buff))); | ||
| 1662 | if (bi == null) { | ||
| 1663 | ImageTypeSpecifier embType = reader.getImageTypes(0).next(); | ||
| 1664 | bi = embType.createBufferedImage(destinationRegion.x + | ||
| 1665 | destinationRegion.width, | ||
| 1666 | destinationRegion.y + | ||
| 1667 | destinationRegion.height); | ||
| 1668 | } | ||
| 1669 | |||
| 1670 | reader.addIIOReadProgressListener(new EmbeddedProgressAdapter() { | ||
| 1671 | public void imageProgress(ImageReader source, | ||
| 1672 | float percentageDone) | ||
| 1673 | { | ||
| 1674 | processImageProgress(percentageDone); | ||
| 1675 | } | ||
| 1676 | }); | ||
| 1677 | |||
| 1678 | reader.addIIOReadUpdateListener(new IIOReadUpdateListener() { | ||
| 1679 | public void imageUpdate(ImageReader source, | ||
| 1680 | BufferedImage theImage, | ||
| 1681 | int minX, int minY, | ||
| 1682 | int width, int height, | ||
| 1683 | int periodX, int periodY, | ||
| 1684 | int[] bands) | ||
| 1685 | { | ||
| 1686 | processImageUpdate(theImage, minX, minY, | ||
| 1687 | width, height, | ||
| 1688 | periodX, periodY, bands); | ||
| 1689 | } | ||
| 1690 | public void passComplete(ImageReader source, | ||
| 1691 | BufferedImage theImage) | ||
| 1692 | { | ||
| 1693 | processPassComplete(theImage); | ||
| 1694 | } | ||
| 1695 | public void passStarted(ImageReader source, | ||
| 1696 | BufferedImage theImage, | ||
| 1697 | int pass, | ||
| 1698 | int minPass, int maxPass, | ||
| 1699 | int minX, int minY, | ||
| 1700 | int periodX, int periodY, | ||
| 1701 | int[] bands) | ||
| 1702 | { | ||
| 1703 | processPassStarted(theImage, pass, minPass, maxPass, | ||
| 1704 | minX, minY, periodX, periodY, | ||
| 1705 | bands); | ||
| 1706 | } | ||
| 1707 | public void thumbnailPassComplete(ImageReader source, | ||
| 1708 | BufferedImage thumb) {} | ||
| 1709 | public void thumbnailPassStarted(ImageReader source, | ||
| 1710 | BufferedImage thumb, | ||
| 1711 | int pass, | ||
| 1712 | int minPass, int maxPass, | ||
| 1713 | int minX, int minY, | ||
| 1714 | int periodX, int periodY, | ||
| 1715 | int[] bands) {} | ||
| 1716 | public void thumbnailUpdate(ImageReader source, | ||
| 1717 | BufferedImage theThumbnail, | ||
| 1718 | int minX, int minY, | ||
| 1719 | int width, int height, | ||
| 1720 | int periodX, int periodY, | ||
| 1721 | int[] bands) {} | ||
| 1722 | }); | ||
| 1723 | |||
| 1724 | reader.addIIOReadWarningListener(new IIOReadWarningListener() { | ||
| 1725 | public void warningOccurred(ImageReader source, String warning) | ||
| 1726 | { | ||
| 1727 | processWarningOccurred(warning); | ||
| 1728 | } | ||
| 1729 | }); | ||
| 1730 | |||
| 1731 | ImageReadParam param = reader.getDefaultReadParam(); | ||
| 1732 | param.setDestination(bi); | ||
| 1733 | param.setDestinationBands(bmpParam.getDestinationBands()); | ||
| 1734 | param.setDestinationOffset(bmpParam.getDestinationOffset()); | ||
| 1735 | param.setSourceBands(bmpParam.getSourceBands()); | ||
| 1736 | param.setSourceRegion(bmpParam.getSourceRegion()); | ||
| 1737 | param.setSourceSubsampling(bmpParam.getSourceXSubsampling(), | ||
| 1738 | bmpParam.getSourceYSubsampling(), | ||
| 1739 | bmpParam.getSubsamplingXOffset(), | ||
| 1740 | bmpParam.getSubsamplingYOffset()); | ||
| 1741 | reader.read(0, param); | ||
| 1742 | return bi; | ||
| 1743 | } | ||
| 1744 | |||
| 1745 | private class EmbeddedProgressAdapter implements IIOReadProgressListener { | ||
| 1746 | public void imageComplete(ImageReader src) {} | ||
| 1747 | public void imageProgress(ImageReader src, float percentageDone) {} | ||
| 1748 | public void imageStarted(ImageReader src, int imageIndex) {} | ||
| 1749 | public void thumbnailComplete(ImageReader src) {} | ||
| 1750 | public void thumbnailProgress(ImageReader src, float percentageDone) {} | ||
| 1751 | public void thumbnailStarted(ImageReader src, int iIdx, int tIdx) {} | ||
| 1752 | public void sequenceComplete(ImageReader src) {} | ||
| 1753 | public void sequenceStarted(ImageReader src, int minIndex) {} | ||
| 1754 | public void readAborted(ImageReader src) {} | ||
| 1755 | } | ||
| 1756 | |||
| 1757 | private static Boolean isLinkedProfileDisabled = null; | ||
| 1758 | |||
| 1759 | private static boolean isLinkedProfileAllowed() { | ||
| 1760 | if (isLinkedProfileDisabled == null) { | ||
| 1761 | PrivilegedAction<Boolean> a = new PrivilegedAction<Boolean>() { | ||
| 1762 | public Boolean run() { | ||
| 1763 | return Boolean.getBoolean("sun.imageio.plugins.bmp.disableLinkedProfiles"); | ||
| 1764 | } | ||
| 1765 | }; | ||
| 1766 | isLinkedProfileDisabled = AccessController.doPrivileged(a); | ||
| 1767 | } | ||
| 1768 | return !isLinkedProfileDisabled; | ||
| 1769 | } | ||
| 1770 | |||
| 1771 | private static Boolean isWindowsPlatform = null; | ||
| 1772 | |||
| 1773 | /** | ||
| 1774 | * Verifies whether the byte array contans a unc path. | ||
| 1775 | * Non-UNC path examples: | ||
| 1776 | * c:\path\to\file - simple notation | ||
| 1777 | * \\?\c:\path\to\file - long notation | ||
| 1778 | * | ||
| 1779 | * UNC path examples: | ||
| 1780 | * \\server\share - a UNC path in simple notation | ||
| 1781 | * \\?\UNC\server\share - a UNC path in long notation | ||
| 1782 | * \\.\some\device - a path to device. | ||
| 1783 | */ | ||
| 1784 | private static boolean isUncOrDevicePath(byte[] p) { | ||
| 1785 | if (isWindowsPlatform == null) { | ||
| 1786 | PrivilegedAction<Boolean> a = new PrivilegedAction<Boolean>() { | ||
| 1787 | public Boolean run() { | ||
| 1788 | String osname = System.getProperty("os.name"); | ||
| 1789 | return (osname != null && | ||
| 1790 | osname.toLowerCase().startsWith("win")); | ||
| 1791 | } | ||
| 1792 | }; | ||
| 1793 | isWindowsPlatform = AccessController.doPrivileged(a); | ||
| 1794 | } | ||
| 1795 | |||
| 1796 | if (!isWindowsPlatform) { | ||
| 1797 | /* no need for the check on platforms except windows */ | ||
| 1798 | return false; | ||
| 1799 | } | ||
| 1800 | |||
| 1801 | /* normalize prefix of the path */ | ||
| 1802 | if (p[0] == '/') p[0] = '\\'; | ||
| 1803 | if (p[1] == '/') p[1] = '\\'; | ||
| 1804 | if (p[3] == '/') p[3] = '\\'; | ||
| 1805 | |||
| 1806 | |||
| 1807 | if ((p[0] == '\\') && (p[1] == '\\')) { | ||
| 1808 | if ((p[2] == '?') && (p[3] == '\\')) { | ||
| 1809 | // long path: whether unc or local | ||
| 1810 | return ((p[4] == 'U' || p[4] == 'u') && | ||
| 1811 | (p[5] == 'N' || p[5] == 'n') && | ||
| 1812 | (p[6] == 'C' || p[6] == 'c')); | ||
| 1813 | } else { | ||
| 1814 | // device path or short unc notation | ||
| 1815 | return true; | ||
| 1816 | } | ||
| 1817 | } else { | ||
| 1818 | return false; | ||
| 1819 | } | ||
| 1820 | } | ||
| 1821 | } | ||