1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/os/graphics/graphicsdeviceinterface/gdi/lookuptable/lookuptable.cpp Fri Jun 15 03:10:57 2012 +0200
1.3 @@ -0,0 +1,608 @@
1.4 +// Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).
1.5 +// All rights reserved.
1.6 +// This component and the accompanying materials are made available
1.7 +// under the terms of "Eclipse Public License v1.0"
1.8 +// which accompanies this distribution, and is available
1.9 +// at the URL "http://www.eclipse.org/legal/epl-v10.html".
1.10 +//
1.11 +// Initial Contributors:
1.12 +// Nokia Corporation - initial contribution.
1.13 +//
1.14 +// Contributors:
1.15 +//
1.16 +// Description:
1.17 +//
1.18 +
1.19 +#include "lookuptable.h"
1.20 +
1.21 +/**
1.22 +@internalComponent
1.23 +*/
1.24 +// Lookup table low word for converting from 16bpp to 32bpp display modes
1.25 +const TUint16 KBlt16to32Low[256] =
1.26 + {
1.27 + 0x0000,
1.28 + 0x0008,
1.29 + 0x0010,
1.30 + 0x0018,
1.31 + 0x0021,
1.32 + 0x0029,
1.33 + 0x0031,
1.34 + 0x0039,
1.35 + 0x0042,
1.36 + 0x004a,
1.37 + 0x0052,
1.38 + 0x005a,
1.39 + 0x0063,
1.40 + 0x006b,
1.41 + 0x0073,
1.42 + 0x007b,
1.43 + 0x0084,
1.44 + 0x008c,
1.45 + 0x0094,
1.46 + 0x009c,
1.47 + 0x00a5,
1.48 + 0x00ad,
1.49 + 0x00b5,
1.50 + 0x00bd,
1.51 + 0x00c6,
1.52 + 0x00ce,
1.53 + 0x00d6,
1.54 + 0x00de,
1.55 + 0x00e7,
1.56 + 0x00ef,
1.57 + 0x00f7,
1.58 + 0x00ff,
1.59 + 0x0400,
1.60 + 0x0408,
1.61 + 0x0410,
1.62 + 0x0418,
1.63 + 0x0421,
1.64 + 0x0429,
1.65 + 0x0431,
1.66 + 0x0439,
1.67 + 0x0442,
1.68 + 0x044a,
1.69 + 0x0452,
1.70 + 0x045a,
1.71 + 0x0463,
1.72 + 0x046b,
1.73 + 0x0473,
1.74 + 0x047b,
1.75 + 0x0484,
1.76 + 0x048c,
1.77 + 0x0494,
1.78 + 0x049c,
1.79 + 0x04a5,
1.80 + 0x04ad,
1.81 + 0x04b5,
1.82 + 0x04bd,
1.83 + 0x04c6,
1.84 + 0x04ce,
1.85 + 0x04d6,
1.86 + 0x04de,
1.87 + 0x04e7,
1.88 + 0x04ef,
1.89 + 0x04f7,
1.90 + 0x04ff,
1.91 + 0x0800,
1.92 + 0x0808,
1.93 + 0x0810,
1.94 + 0x0818,
1.95 + 0x0821,
1.96 + 0x0829,
1.97 + 0x0831,
1.98 + 0x0839,
1.99 + 0x0842,
1.100 + 0x084a,
1.101 + 0x0852,
1.102 + 0x085a,
1.103 + 0x0863,
1.104 + 0x086b,
1.105 + 0x0873,
1.106 + 0x087b,
1.107 + 0x0884,
1.108 + 0x088c,
1.109 + 0x0894,
1.110 + 0x089c,
1.111 + 0x08a5,
1.112 + 0x08ad,
1.113 + 0x08b5,
1.114 + 0x08bd,
1.115 + 0x08c6,
1.116 + 0x08ce,
1.117 + 0x08d6,
1.118 + 0x08de,
1.119 + 0x08e7,
1.120 + 0x08ef,
1.121 + 0x08f7,
1.122 + 0x08ff,
1.123 + 0x0c00,
1.124 + 0x0c08,
1.125 + 0x0c10,
1.126 + 0x0c18,
1.127 + 0x0c21,
1.128 + 0x0c29,
1.129 + 0x0c31,
1.130 + 0x0c39,
1.131 + 0x0c42,
1.132 + 0x0c4a,
1.133 + 0x0c52,
1.134 + 0x0c5a,
1.135 + 0x0c63,
1.136 + 0x0c6b,
1.137 + 0x0c73,
1.138 + 0x0c7b,
1.139 + 0x0c84,
1.140 + 0x0c8c,
1.141 + 0x0c94,
1.142 + 0x0c9c,
1.143 + 0x0ca5,
1.144 + 0x0cad,
1.145 + 0x0cb5,
1.146 + 0x0cbd,
1.147 + 0x0cc6,
1.148 + 0x0cce,
1.149 + 0x0cd6,
1.150 + 0x0cde,
1.151 + 0x0ce7,
1.152 + 0x0cef,
1.153 + 0x0cf7,
1.154 + 0x0cff,
1.155 + 0x1000,
1.156 + 0x1008,
1.157 + 0x1010,
1.158 + 0x1018,
1.159 + 0x1021,
1.160 + 0x1029,
1.161 + 0x1031,
1.162 + 0x1039,
1.163 + 0x1042,
1.164 + 0x104a,
1.165 + 0x1052,
1.166 + 0x105a,
1.167 + 0x1063,
1.168 + 0x106b,
1.169 + 0x1073,
1.170 + 0x107b,
1.171 + 0x1084,
1.172 + 0x108c,
1.173 + 0x1094,
1.174 + 0x109c,
1.175 + 0x10a5,
1.176 + 0x10ad,
1.177 + 0x10b5,
1.178 + 0x10bd,
1.179 + 0x10c6,
1.180 + 0x10ce,
1.181 + 0x10d6,
1.182 + 0x10de,
1.183 + 0x10e7,
1.184 + 0x10ef,
1.185 + 0x10f7,
1.186 + 0x10ff,
1.187 + 0x1400,
1.188 + 0x1408,
1.189 + 0x1410,
1.190 + 0x1418,
1.191 + 0x1421,
1.192 + 0x1429,
1.193 + 0x1431,
1.194 + 0x1439,
1.195 + 0x1442,
1.196 + 0x144a,
1.197 + 0x1452,
1.198 + 0x145a,
1.199 + 0x1463,
1.200 + 0x146b,
1.201 + 0x1473,
1.202 + 0x147b,
1.203 + 0x1484,
1.204 + 0x148c,
1.205 + 0x1494,
1.206 + 0x149c,
1.207 + 0x14a5,
1.208 + 0x14ad,
1.209 + 0x14b5,
1.210 + 0x14bd,
1.211 + 0x14c6,
1.212 + 0x14ce,
1.213 + 0x14d6,
1.214 + 0x14de,
1.215 + 0x14e7,
1.216 + 0x14ef,
1.217 + 0x14f7,
1.218 + 0x14ff,
1.219 + 0x1800,
1.220 + 0x1808,
1.221 + 0x1810,
1.222 + 0x1818,
1.223 + 0x1821,
1.224 + 0x1829,
1.225 + 0x1831,
1.226 + 0x1839,
1.227 + 0x1842,
1.228 + 0x184a,
1.229 + 0x1852,
1.230 + 0x185a,
1.231 + 0x1863,
1.232 + 0x186b,
1.233 + 0x1873,
1.234 + 0x187b,
1.235 + 0x1884,
1.236 + 0x188c,
1.237 + 0x1894,
1.238 + 0x189c,
1.239 + 0x18a5,
1.240 + 0x18ad,
1.241 + 0x18b5,
1.242 + 0x18bd,
1.243 + 0x18c6,
1.244 + 0x18ce,
1.245 + 0x18d6,
1.246 + 0x18de,
1.247 + 0x18e7,
1.248 + 0x18ef,
1.249 + 0x18f7,
1.250 + 0x18ff,
1.251 + 0x1c00,
1.252 + 0x1c08,
1.253 + 0x1c10,
1.254 + 0x1c18,
1.255 + 0x1c21,
1.256 + 0x1c29,
1.257 + 0x1c31,
1.258 + 0x1c39,
1.259 + 0x1c42,
1.260 + 0x1c4a,
1.261 + 0x1c52,
1.262 + 0x1c5a,
1.263 + 0x1c63,
1.264 + 0x1c6b,
1.265 + 0x1c73,
1.266 + 0x1c7b,
1.267 + 0x1c84,
1.268 + 0x1c8c,
1.269 + 0x1c94,
1.270 + 0x1c9c,
1.271 + 0x1ca5,
1.272 + 0x1cad,
1.273 + 0x1cb5,
1.274 + 0x1cbd,
1.275 + 0x1cc6,
1.276 + 0x1cce,
1.277 + 0x1cd6,
1.278 + 0x1cde,
1.279 + 0x1ce7,
1.280 + 0x1cef,
1.281 + 0x1cf7,
1.282 + 0x1cff
1.283 + };
1.284 +
1.285 +/**
1.286 +@internalComponent
1.287 +*/
1.288 +// Lookup table high long word for converting from 16bpp to 32bpp display modes
1.289 +const TUint32 KBlt16to32High[256] =
1.290 + {
1.291 + 0xff000000,
1.292 + 0xff002000,
1.293 + 0xff004100,
1.294 + 0xff006100,
1.295 + 0xff008200,
1.296 + 0xff00a200,
1.297 + 0xff00c300,
1.298 + 0xff00e300,
1.299 + 0xff080000,
1.300 + 0xff082000,
1.301 + 0xff084100,
1.302 + 0xff086100,
1.303 + 0xff088200,
1.304 + 0xff08a200,
1.305 + 0xff08c300,
1.306 + 0xff08e300,
1.307 + 0xff100000,
1.308 + 0xff102000,
1.309 + 0xff104100,
1.310 + 0xff106100,
1.311 + 0xff108200,
1.312 + 0xff10a200,
1.313 + 0xff10c300,
1.314 + 0xff10e300,
1.315 + 0xff180000,
1.316 + 0xff182000,
1.317 + 0xff184100,
1.318 + 0xff186100,
1.319 + 0xff188200,
1.320 + 0xff18a200,
1.321 + 0xff18c300,
1.322 + 0xff18e300,
1.323 + 0xff210000,
1.324 + 0xff212000,
1.325 + 0xff214100,
1.326 + 0xff216100,
1.327 + 0xff218200,
1.328 + 0xff21a200,
1.329 + 0xff21c300,
1.330 + 0xff21e300,
1.331 + 0xff290000,
1.332 + 0xff292000,
1.333 + 0xff294100,
1.334 + 0xff296100,
1.335 + 0xff298200,
1.336 + 0xff29a200,
1.337 + 0xff29c300,
1.338 + 0xff29e300,
1.339 + 0xff310000,
1.340 + 0xff312000,
1.341 + 0xff314100,
1.342 + 0xff316100,
1.343 + 0xff318200,
1.344 + 0xff31a200,
1.345 + 0xff31c300,
1.346 + 0xff31e300,
1.347 + 0xff390000,
1.348 + 0xff392000,
1.349 + 0xff394100,
1.350 + 0xff396100,
1.351 + 0xff398200,
1.352 + 0xff39a200,
1.353 + 0xff39c300,
1.354 + 0xff39e300,
1.355 + 0xff420000,
1.356 + 0xff422000,
1.357 + 0xff424100,
1.358 + 0xff426100,
1.359 + 0xff428200,
1.360 + 0xff42a200,
1.361 + 0xff42c300,
1.362 + 0xff42e300,
1.363 + 0xff4a0000,
1.364 + 0xff4a2000,
1.365 + 0xff4a4100,
1.366 + 0xff4a6100,
1.367 + 0xff4a8200,
1.368 + 0xff4aa200,
1.369 + 0xff4ac300,
1.370 + 0xff4ae300,
1.371 + 0xff520000,
1.372 + 0xff522000,
1.373 + 0xff524100,
1.374 + 0xff526100,
1.375 + 0xff528200,
1.376 + 0xff52a200,
1.377 + 0xff52c300,
1.378 + 0xff52e300,
1.379 + 0xff5a0000,
1.380 + 0xff5a2000,
1.381 + 0xff5a4100,
1.382 + 0xff5a6100,
1.383 + 0xff5a8200,
1.384 + 0xff5aa200,
1.385 + 0xff5ac300,
1.386 + 0xff5ae300,
1.387 + 0xff630000,
1.388 + 0xff632000,
1.389 + 0xff634100,
1.390 + 0xff636100,
1.391 + 0xff638200,
1.392 + 0xff63a200,
1.393 + 0xff63c300,
1.394 + 0xff63e300,
1.395 + 0xff6b0000,
1.396 + 0xff6b2000,
1.397 + 0xff6b4100,
1.398 + 0xff6b6100,
1.399 + 0xff6b8200,
1.400 + 0xff6ba200,
1.401 + 0xff6bc300,
1.402 + 0xff6be300,
1.403 + 0xff730000,
1.404 + 0xff732000,
1.405 + 0xff734100,
1.406 + 0xff736100,
1.407 + 0xff738200,
1.408 + 0xff73a200,
1.409 + 0xff73c300,
1.410 + 0xff73e300,
1.411 + 0xff7b0000,
1.412 + 0xff7b2000,
1.413 + 0xff7b4100,
1.414 + 0xff7b6100,
1.415 + 0xff7b8200,
1.416 + 0xff7ba200,
1.417 + 0xff7bc300,
1.418 + 0xff7be300,
1.419 + 0xff840000,
1.420 + 0xff842000,
1.421 + 0xff844100,
1.422 + 0xff846100,
1.423 + 0xff848200,
1.424 + 0xff84a200,
1.425 + 0xff84c300,
1.426 + 0xff84e300,
1.427 + 0xff8c0000,
1.428 + 0xff8c2000,
1.429 + 0xff8c4100,
1.430 + 0xff8c6100,
1.431 + 0xff8c8200,
1.432 + 0xff8ca200,
1.433 + 0xff8cc300,
1.434 + 0xff8ce300,
1.435 + 0xff940000,
1.436 + 0xff942000,
1.437 + 0xff944100,
1.438 + 0xff946100,
1.439 + 0xff948200,
1.440 + 0xff94a200,
1.441 + 0xff94c300,
1.442 + 0xff94e300,
1.443 + 0xff9c0000,
1.444 + 0xff9c2000,
1.445 + 0xff9c4100,
1.446 + 0xff9c6100,
1.447 + 0xff9c8200,
1.448 + 0xff9ca200,
1.449 + 0xff9cc300,
1.450 + 0xff9ce300,
1.451 + 0xffa50000,
1.452 + 0xffa52000,
1.453 + 0xffa54100,
1.454 + 0xffa56100,
1.455 + 0xffa58200,
1.456 + 0xffa5a200,
1.457 + 0xffa5c300,
1.458 + 0xffa5e300,
1.459 + 0xffad0000,
1.460 + 0xffad2000,
1.461 + 0xffad4100,
1.462 + 0xffad6100,
1.463 + 0xffad8200,
1.464 + 0xffada200,
1.465 + 0xffadc300,
1.466 + 0xffade300,
1.467 + 0xffb50000,
1.468 + 0xffb52000,
1.469 + 0xffb54100,
1.470 + 0xffb56100,
1.471 + 0xffb58200,
1.472 + 0xffb5a200,
1.473 + 0xffb5c300,
1.474 + 0xffb5e300,
1.475 + 0xffbd0000,
1.476 + 0xffbd2000,
1.477 + 0xffbd4100,
1.478 + 0xffbd6100,
1.479 + 0xffbd8200,
1.480 + 0xffbda200,
1.481 + 0xffbdc300,
1.482 + 0xffbde300,
1.483 + 0xffc60000,
1.484 + 0xffc62000,
1.485 + 0xffc64100,
1.486 + 0xffc66100,
1.487 + 0xffc68200,
1.488 + 0xffc6a200,
1.489 + 0xffc6c300,
1.490 + 0xffc6e300,
1.491 + 0xffce0000,
1.492 + 0xffce2000,
1.493 + 0xffce4100,
1.494 + 0xffce6100,
1.495 + 0xffce8200,
1.496 + 0xffcea200,
1.497 + 0xffcec300,
1.498 + 0xffcee300,
1.499 + 0xffd60000,
1.500 + 0xffd62000,
1.501 + 0xffd64100,
1.502 + 0xffd66100,
1.503 + 0xffd68200,
1.504 + 0xffd6a200,
1.505 + 0xffd6c300,
1.506 + 0xffd6e300,
1.507 + 0xffde0000,
1.508 + 0xffde2000,
1.509 + 0xffde4100,
1.510 + 0xffde6100,
1.511 + 0xffde8200,
1.512 + 0xffdea200,
1.513 + 0xffdec300,
1.514 + 0xffdee300,
1.515 + 0xffe70000,
1.516 + 0xffe72000,
1.517 + 0xffe74100,
1.518 + 0xffe76100,
1.519 + 0xffe78200,
1.520 + 0xffe7a200,
1.521 + 0xffe7c300,
1.522 + 0xffe7e300,
1.523 + 0xffef0000,
1.524 + 0xffef2000,
1.525 + 0xffef4100,
1.526 + 0xffef6100,
1.527 + 0xffef8200,
1.528 + 0xffefa200,
1.529 + 0xffefc300,
1.530 + 0xffefe300,
1.531 + 0xfff70000,
1.532 + 0xfff72000,
1.533 + 0xfff74100,
1.534 + 0xfff76100,
1.535 + 0xfff78200,
1.536 + 0xfff7a200,
1.537 + 0xfff7c300,
1.538 + 0xfff7e300,
1.539 + 0xffff0000,
1.540 + 0xffff2000,
1.541 + 0xffff4100,
1.542 + 0xffff6100,
1.543 + 0xffff8200,
1.544 + 0xffffa200,
1.545 + 0xffffc300,
1.546 + 0xffffe300
1.547 + };
1.548 +
1.549 +
1.550 +const TUint16 NormalisationTable16Bit[256] = {
1.551 + 0,65280,32640,21760,16320,13056,10880,9326,8160,7254,6528,
1.552 + 5935,5440,5022,4663,4352,4080,3840,3627,3436,3264,
1.553 + 3109,2968,2839,2720,2612,2511,2418,2332,2252,2176,
1.554 + 2106,2040,1979,1920,1866,1814,1765,1718,1674,1632,
1.555 + 1593,1555,1519,1484,1451,1420,1389,1360,1333,1306,
1.556 + 1280,1256,1232,1209,1187,1166,1146,1126,1107,1088,
1.557 + 1071,1053,1037,1020,1005,990,975,960,947,933,
1.558 + 920,907,895,883,871,859,848,837,827,816,
1.559 + 806,797,787,778,768,760,751,742,734,726,
1.560 + 718,710,702,695,688,680,673,667,660,653,
1.561 + 647,640,634,628,622,616,611,605,599,594,
1.562 + 589,583,578,573,568,563,558,554,549,544,
1.563 + 540,536,531,527,523,519,515,510,507,503,
1.564 + 499,495,491,488,484,480,477,474,470,467,
1.565 + 463,460,457,454,451,448,445,442,439,436,
1.566 + 433,430,427,424,422,419,416,414,411,408,
1.567 + 406,403,401,399,396,394,391,389,387,384,
1.568 + 382,380,378,376,374,371,369,367,365,363,
1.569 + 361,359,357,355,353,351,350,348,346,344,
1.570 + 342,340,339,337,335,334,332,330,329,327,
1.571 + 325,324,322,320,319,317,316,314,313,311,
1.572 + 310,308,307,306,304,303,301,300,299,297,
1.573 + 296,295,293,292,291,289,288,287,286,284,
1.574 + 283,282,281,279,278,277,276,275,274,272,
1.575 + 271,270,269,268,267,266,265,264,263,262,
1.576 + 261,260,259,258,256,
1.577 +};
1.578 +
1.579 +
1.580 +/**
1.581 +This function will return value of converted 16bpp to 32bpp display modes. This lookup table is
1.582 +used to improve performance.
1.583 +@internalComponent
1.584 +*/
1.585 +
1.586 + EXPORT_C const TUint16* Convert16to32bppLow()
1.587 + {
1.588 + return KBlt16to32Low;
1.589 + }
1.590 +
1.591 + EXPORT_C const TUint32* Convert16to32bppHigh()
1.592 + {
1.593 + return KBlt16to32High;
1.594 + }
1.595 +
1.596 +/**
1.597 +Returns the pointer to the table of 16-bit normalisation table.
1.598 +The table is currently used for performing un-multiplying Premultiplied Alpha color channels.
1.599 +This lookup table for normalised alpha is compluted using this equation: Table[index] = (255*256) / index (where index is an 8 bit value)
1.600 +Use: Let x be c * a/255, and y = c, then y = (x/a)*255, where a is in 0-255 range.
1.601 + To use this table, use y = (x * Table[a])>>8. i.e, the inaccurate division is converted
1.602 + to more accurate multiplication and shift.
1.603 +
1.604 +@return pointer to the normalisation table.
1.605 +@internalTechnology
1.606 +*/
1.607 +EXPORT_C const TUint16* PtrTo16BitNormalisationTable()
1.608 + {
1.609 + return &NormalisationTable16Bit[0];
1.610 + }
1.611 +