J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2007 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun in the LICENSE file that accompanied this code. |
| 10 | * |
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| 15 | * accompanied this code). |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License version |
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | package sun.java2d.pipe; |
| 27 | |
| 28 | import java.awt.color.ColorSpace; |
| 29 | import java.awt.image.AffineTransformOp; |
| 30 | import java.awt.image.BufferedImage; |
| 31 | import java.awt.image.BufferedImageOp; |
| 32 | import java.awt.image.BufferedImageOp; |
| 33 | import java.awt.image.ByteLookupTable; |
| 34 | import java.awt.image.ColorModel; |
| 35 | import java.awt.image.ConvolveOp; |
| 36 | import java.awt.image.IndexColorModel; |
| 37 | import java.awt.image.Kernel; |
| 38 | import java.awt.image.LookupOp; |
| 39 | import java.awt.image.LookupTable; |
| 40 | import java.awt.image.RescaleOp; |
| 41 | import java.awt.image.ShortLookupTable; |
| 42 | import sun.java2d.SurfaceData; |
| 43 | import sun.java2d.loops.CompositeType; |
| 44 | import static sun.java2d.pipe.BufferedOpCodes.*; |
| 45 | |
| 46 | public class BufferedBufImgOps { |
| 47 | |
| 48 | public static void enableBufImgOp(RenderQueue rq, SurfaceData srcData, |
| 49 | BufferedImage srcImg, |
| 50 | BufferedImageOp biop) |
| 51 | { |
| 52 | if (biop instanceof ConvolveOp) { |
| 53 | enableConvolveOp(rq, srcData, (ConvolveOp)biop); |
| 54 | } else if (biop instanceof RescaleOp) { |
| 55 | enableRescaleOp(rq, srcData, srcImg, (RescaleOp)biop); |
| 56 | } else if (biop instanceof LookupOp) { |
| 57 | enableLookupOp(rq, srcData, srcImg, (LookupOp)biop); |
| 58 | } else { |
| 59 | throw new InternalError("Unknown BufferedImageOp"); |
| 60 | } |
| 61 | } |
| 62 | |
| 63 | public static void disableBufImgOp(RenderQueue rq, BufferedImageOp biop) { |
| 64 | if (biop instanceof ConvolveOp) { |
| 65 | disableConvolveOp(rq); |
| 66 | } else if (biop instanceof RescaleOp) { |
| 67 | disableRescaleOp(rq); |
| 68 | } else if (biop instanceof LookupOp) { |
| 69 | disableLookupOp(rq); |
| 70 | } else { |
| 71 | throw new InternalError("Unknown BufferedImageOp"); |
| 72 | } |
| 73 | } |
| 74 | |
| 75 | /**************************** ConvolveOp support ****************************/ |
| 76 | |
| 77 | public static boolean isConvolveOpValid(ConvolveOp cop) { |
| 78 | Kernel kernel = cop.getKernel(); |
| 79 | int kw = kernel.getWidth(); |
| 80 | int kh = kernel.getHeight(); |
| 81 | // REMIND: we currently can only handle 3x3 and 5x5 kernels, |
| 82 | // but hopefully this is just a temporary restriction; |
| 83 | // see native shader comments for more details |
| 84 | if (!(kw == 3 && kh == 3) && !(kw == 5 && kh == 5)) { |
| 85 | return false; |
| 86 | } |
| 87 | return true; |
| 88 | } |
| 89 | |
| 90 | private static void enableConvolveOp(RenderQueue rq, |
| 91 | SurfaceData srcData, |
| 92 | ConvolveOp cop) |
| 93 | { |
| 94 | // assert rq.lock.isHeldByCurrentThread(); |
| 95 | boolean edgeZero = |
| 96 | cop.getEdgeCondition() == ConvolveOp.EDGE_ZERO_FILL; |
| 97 | Kernel kernel = cop.getKernel(); |
| 98 | int kernelWidth = kernel.getWidth(); |
| 99 | int kernelHeight = kernel.getHeight(); |
| 100 | int kernelSize = kernelWidth * kernelHeight; |
| 101 | int sizeofFloat = 4; |
| 102 | int totalBytesRequired = 4 + 8 + 12 + (kernelSize * sizeofFloat); |
| 103 | |
| 104 | RenderBuffer buf = rq.getBuffer(); |
| 105 | rq.ensureCapacityAndAlignment(totalBytesRequired, 4); |
| 106 | buf.putInt(ENABLE_CONVOLVE_OP); |
| 107 | buf.putLong(srcData.getNativeOps()); |
| 108 | buf.putInt(edgeZero ? 1 : 0); |
| 109 | buf.putInt(kernelWidth); |
| 110 | buf.putInt(kernelHeight); |
| 111 | buf.put(kernel.getKernelData(null)); |
| 112 | } |
| 113 | |
| 114 | private static void disableConvolveOp(RenderQueue rq) { |
| 115 | // assert rq.lock.isHeldByCurrentThread(); |
| 116 | RenderBuffer buf = rq.getBuffer(); |
| 117 | rq.ensureCapacity(4); |
| 118 | buf.putInt(DISABLE_CONVOLVE_OP); |
| 119 | } |
| 120 | |
| 121 | /**************************** RescaleOp support *****************************/ |
| 122 | |
| 123 | public static boolean isRescaleOpValid(RescaleOp rop, |
| 124 | BufferedImage srcImg) |
| 125 | { |
| 126 | int numFactors = rop.getNumFactors(); |
| 127 | ColorModel srcCM = srcImg.getColorModel(); |
| 128 | |
| 129 | if (srcCM instanceof IndexColorModel) { |
| 130 | throw new |
| 131 | IllegalArgumentException("Rescaling cannot be "+ |
| 132 | "performed on an indexed image"); |
| 133 | } |
| 134 | if (numFactors != 1 && |
| 135 | numFactors != srcCM.getNumColorComponents() && |
| 136 | numFactors != srcCM.getNumComponents()) |
| 137 | { |
| 138 | throw new IllegalArgumentException("Number of scaling constants "+ |
| 139 | "does not equal the number of"+ |
| 140 | " of color or color/alpha "+ |
| 141 | " components"); |
| 142 | } |
| 143 | |
| 144 | int csType = srcCM.getColorSpace().getType(); |
| 145 | if (csType != ColorSpace.TYPE_RGB && |
| 146 | csType != ColorSpace.TYPE_GRAY) |
| 147 | { |
| 148 | // Not prepared to deal with other color spaces |
| 149 | return false; |
| 150 | } |
| 151 | |
| 152 | if (numFactors == 2 || numFactors > 4) { |
| 153 | // Not really prepared to handle this at the native level, so... |
| 154 | return false; |
| 155 | } |
| 156 | |
| 157 | return true; |
| 158 | } |
| 159 | |
| 160 | private static void enableRescaleOp(RenderQueue rq, |
| 161 | SurfaceData srcData, |
| 162 | BufferedImage srcImg, |
| 163 | RescaleOp rop) |
| 164 | { |
| 165 | // assert rq.lock.isHeldByCurrentThread(); |
| 166 | ColorModel srcCM = srcImg.getColorModel(); |
| 167 | boolean nonPremult = |
| 168 | srcCM.hasAlpha() && |
| 169 | srcCM.isAlphaPremultiplied(); |
| 170 | |
| 171 | /* |
| 172 | * Note: The user-provided scale factors and offsets are arranged |
| 173 | * in R/G/B/A order, regardless of the raw data order of the |
| 174 | * underlying Raster/DataBuffer. The source image data is ultimately |
| 175 | * converted into RGBA data when uploaded to an OpenGL texture |
| 176 | * (even for TYPE_GRAY), so the scale factors and offsets are already |
| 177 | * in the order expected by the native OpenGL code. |
| 178 | * |
| 179 | * However, the offsets provided by the user are in a range dictated |
| 180 | * by the size of each color/alpha band in the source image. For |
| 181 | * example, for 8/8/8 data each offset is in the range [0,255], |
| 182 | * for 5/5/5 data each offset is in the range [0,31], and so on. |
| 183 | * The OpenGL shader only thinks in terms of [0,1], so below we need |
| 184 | * to normalize the user-provided offset values into the range [0,1]. |
| 185 | */ |
| 186 | int numFactors = rop.getNumFactors(); |
| 187 | float[] origScaleFactors = rop.getScaleFactors(null); |
| 188 | float[] origOffsets = rop.getOffsets(null); |
| 189 | |
| 190 | // To make things easier, we will always pass all four bands |
| 191 | // down to native code... |
| 192 | float[] normScaleFactors; |
| 193 | float[] normOffsets; |
| 194 | |
| 195 | if (numFactors == 1) { |
| 196 | normScaleFactors = new float[4]; |
| 197 | normOffsets = new float[4]; |
| 198 | for (int i = 0; i < 3; i++) { |
| 199 | normScaleFactors[i] = origScaleFactors[0]; |
| 200 | normOffsets[i] = origOffsets[0]; |
| 201 | } |
| 202 | // Leave alpha untouched... |
| 203 | normScaleFactors[3] = 1.0f; |
| 204 | normOffsets[3] = 0.0f; |
| 205 | } else if (numFactors == 3) { |
| 206 | normScaleFactors = new float[4]; |
| 207 | normOffsets = new float[4]; |
| 208 | for (int i = 0; i < 3; i++) { |
| 209 | normScaleFactors[i] = origScaleFactors[i]; |
| 210 | normOffsets[i] = origOffsets[i]; |
| 211 | } |
| 212 | // Leave alpha untouched... |
| 213 | normScaleFactors[3] = 1.0f; |
| 214 | normOffsets[3] = 0.0f; |
| 215 | } else { // (numFactors == 4) |
| 216 | normScaleFactors = origScaleFactors; |
| 217 | normOffsets = origOffsets; |
| 218 | } |
| 219 | |
| 220 | // The user-provided offsets are specified in the range |
| 221 | // of each source color band, but the OpenGL shader only wants |
| 222 | // to deal with data in the range [0,1], so we need to normalize |
| 223 | // each offset value to the range [0,1] here. |
| 224 | if (srcCM.getNumComponents() == 1) { |
| 225 | // Gray data |
| 226 | int nBits = srcCM.getComponentSize(0); |
| 227 | int maxValue = (1 << nBits) - 1; |
| 228 | for (int i = 0; i < 3; i++) { |
| 229 | normOffsets[i] /= maxValue; |
| 230 | } |
| 231 | } else { |
| 232 | // RGB(A) data |
| 233 | for (int i = 0; i < srcCM.getNumComponents(); i++) { |
| 234 | int nBits = srcCM.getComponentSize(i); |
| 235 | int maxValue = (1 << nBits) - 1; |
| 236 | normOffsets[i] /= maxValue; |
| 237 | } |
| 238 | } |
| 239 | |
| 240 | int sizeofFloat = 4; |
| 241 | int totalBytesRequired = 4 + 8 + 4 + (4 * sizeofFloat * 2); |
| 242 | |
| 243 | RenderBuffer buf = rq.getBuffer(); |
| 244 | rq.ensureCapacityAndAlignment(totalBytesRequired, 4); |
| 245 | buf.putInt(ENABLE_RESCALE_OP); |
| 246 | buf.putLong(srcData.getNativeOps()); |
| 247 | buf.putInt(nonPremult ? 1 : 0); |
| 248 | buf.put(normScaleFactors); |
| 249 | buf.put(normOffsets); |
| 250 | } |
| 251 | |
| 252 | private static void disableRescaleOp(RenderQueue rq) { |
| 253 | // assert rq.lock.isHeldByCurrentThread(); |
| 254 | RenderBuffer buf = rq.getBuffer(); |
| 255 | rq.ensureCapacity(4); |
| 256 | buf.putInt(DISABLE_RESCALE_OP); |
| 257 | } |
| 258 | |
| 259 | /**************************** LookupOp support ******************************/ |
| 260 | |
| 261 | public static boolean isLookupOpValid(LookupOp lop, |
| 262 | BufferedImage srcImg) |
| 263 | { |
| 264 | LookupTable table = lop.getTable(); |
| 265 | int numComps = table.getNumComponents(); |
| 266 | ColorModel srcCM = srcImg.getColorModel(); |
| 267 | |
| 268 | if (srcCM instanceof IndexColorModel) { |
| 269 | throw new |
| 270 | IllegalArgumentException("LookupOp cannot be "+ |
| 271 | "performed on an indexed image"); |
| 272 | } |
| 273 | if (numComps != 1 && |
| 274 | numComps != srcCM.getNumComponents() && |
| 275 | numComps != srcCM.getNumColorComponents()) |
| 276 | { |
| 277 | throw new IllegalArgumentException("Number of arrays in the "+ |
| 278 | " lookup table ("+ |
| 279 | numComps+ |
| 280 | ") is not compatible with"+ |
| 281 | " the src image: "+srcImg); |
| 282 | } |
| 283 | |
| 284 | int csType = srcCM.getColorSpace().getType(); |
| 285 | if (csType != ColorSpace.TYPE_RGB && |
| 286 | csType != ColorSpace.TYPE_GRAY) |
| 287 | { |
| 288 | // Not prepared to deal with other color spaces |
| 289 | return false; |
| 290 | } |
| 291 | |
| 292 | if (numComps == 2 || numComps > 4) { |
| 293 | // Not really prepared to handle this at the native level, so... |
| 294 | return false; |
| 295 | } |
| 296 | |
| 297 | // The LookupTable spec says that "all arrays must be the |
| 298 | // same size" but unfortunately the constructors do not |
| 299 | // enforce that. Also, our native code only works with |
| 300 | // arrays no larger than 256 elements, so check both of |
| 301 | // these restrictions here. |
| 302 | if (table instanceof ByteLookupTable) { |
| 303 | byte[][] data = ((ByteLookupTable)table).getTable(); |
| 304 | for (int i = 1; i < data.length; i++) { |
| 305 | if (data[i].length > 256 || |
| 306 | data[i].length != data[i-1].length) |
| 307 | { |
| 308 | return false; |
| 309 | } |
| 310 | } |
| 311 | } else if (table instanceof ShortLookupTable) { |
| 312 | short[][] data = ((ShortLookupTable)table).getTable(); |
| 313 | for (int i = 1; i < data.length; i++) { |
| 314 | if (data[i].length > 256 || |
| 315 | data[i].length != data[i-1].length) |
| 316 | { |
| 317 | return false; |
| 318 | } |
| 319 | } |
| 320 | } else { |
| 321 | return false; |
| 322 | } |
| 323 | |
| 324 | return true; |
| 325 | } |
| 326 | |
| 327 | private static void enableLookupOp(RenderQueue rq, |
| 328 | SurfaceData srcData, |
| 329 | BufferedImage srcImg, |
| 330 | LookupOp lop) |
| 331 | { |
| 332 | // assert rq.lock.isHeldByCurrentThread(); |
| 333 | boolean nonPremult = |
| 334 | srcImg.getColorModel().hasAlpha() && |
| 335 | srcImg.isAlphaPremultiplied(); |
| 336 | |
| 337 | LookupTable table = lop.getTable(); |
| 338 | int numBands = table.getNumComponents(); |
| 339 | int offset = table.getOffset(); |
| 340 | int bandLength; |
| 341 | int bytesPerElem; |
| 342 | boolean shortData; |
| 343 | |
| 344 | if (table instanceof ShortLookupTable) { |
| 345 | short[][] data = ((ShortLookupTable)table).getTable(); |
| 346 | bandLength = data[0].length; |
| 347 | bytesPerElem = 2; |
| 348 | shortData = true; |
| 349 | } else { // (table instanceof ByteLookupTable) |
| 350 | byte[][] data = ((ByteLookupTable)table).getTable(); |
| 351 | bandLength = data[0].length; |
| 352 | bytesPerElem = 1; |
| 353 | shortData = false; |
| 354 | } |
| 355 | |
| 356 | // Adjust the LUT length so that it ends on a 4-byte boundary |
| 357 | int totalLutBytes = numBands * bandLength * bytesPerElem; |
| 358 | int paddedLutBytes = (totalLutBytes + 3) & (~3); |
| 359 | int padding = paddedLutBytes - totalLutBytes; |
| 360 | int totalBytesRequired = 4 + 8 + 20 + paddedLutBytes; |
| 361 | |
| 362 | RenderBuffer buf = rq.getBuffer(); |
| 363 | rq.ensureCapacityAndAlignment(totalBytesRequired, 4); |
| 364 | buf.putInt(ENABLE_LOOKUP_OP); |
| 365 | buf.putLong(srcData.getNativeOps()); |
| 366 | buf.putInt(nonPremult ? 1 : 0); |
| 367 | buf.putInt(shortData ? 1 : 0); |
| 368 | buf.putInt(numBands); |
| 369 | buf.putInt(bandLength); |
| 370 | buf.putInt(offset); |
| 371 | if (shortData) { |
| 372 | short[][] data = ((ShortLookupTable)table).getTable(); |
| 373 | for (int i = 0; i < numBands; i++) { |
| 374 | buf.put(data[i]); |
| 375 | } |
| 376 | } else { |
| 377 | byte[][] data = ((ByteLookupTable)table).getTable(); |
| 378 | for (int i = 0; i < numBands; i++) { |
| 379 | buf.put(data[i]); |
| 380 | } |
| 381 | } |
| 382 | if (padding != 0) { |
| 383 | buf.position(buf.position() + padding); |
| 384 | } |
| 385 | } |
| 386 | |
| 387 | private static void disableLookupOp(RenderQueue rq) { |
| 388 | // assert rq.lock.isHeldByCurrentThread(); |
| 389 | RenderBuffer buf = rq.getBuffer(); |
| 390 | rq.ensureCapacity(4); |
| 391 | buf.putInt(DISABLE_LOOKUP_OP); |
| 392 | } |
| 393 | } |