| File: | lc/localcontrastfilter.cpp |
| Warning: | line 109, column 53 1st function call argument is an uninitialized value |
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| 1 | /* ============================================================ | |||
| 2 | * | |||
| 3 | * This file is a part of digiKam project | |||
| 4 | * https://www.digikam.org | |||
| 5 | * | |||
| 6 | * Date : 2009-08-09 | |||
| 7 | * Description : Enhance image with local contrasts (as human eye does). | |||
| 8 | * LDR ToneMapper <zynaddsubfx.sourceforge.net/other/tonemapping> | |||
| 9 | * | |||
| 10 | * SPDX-FileCopyrightText: 2009 by Nasca Octavian Paul <zynaddsubfx at yahoo dot com> | |||
| 11 | * SPDX-FileCopyrightText: 2009 by Julien Pontabry <julien dot pontabry at gmail dot com> | |||
| 12 | * SPDX-FileCopyrightText: 2009-2024 by Gilles Caulier <caulier dot gilles at gmail dot com> | |||
| 13 | * SPDX-FileCopyrightText: 2010 by Martin Klapetek <martin dot klapetek at gmail dot com> | |||
| 14 | * | |||
| 15 | * SPDX-License-Identifier: GPL-2.0-or-later | |||
| 16 | * | |||
| 17 | * ============================================================ */ | |||
| 18 | ||||
| 19 | #include "localcontrastfilter.h" | |||
| 20 | ||||
| 21 | // Qt includes | |||
| 22 | ||||
| 23 | #include <QtMath> | |||
| 24 | #include <QtConcurrent> // krazy:exclude=includes | |||
| 25 | ||||
| 26 | // Local includes | |||
| 27 | ||||
| 28 | #include "digikam_debug.h" | |||
| 29 | #include "randomnumbergenerator.h" | |||
| 30 | #include "digikam_globals_p.h" // For KF6::Ki18n deprecated | |||
| 31 | ||||
| 32 | namespace Digikam | |||
| 33 | { | |||
| 34 | ||||
| 35 | class Q_DECL_HIDDEN__attribute__((visibility("hidden"))) LocalContrastFilter::Private | |||
| 36 | { | |||
| 37 | public: | |||
| 38 | ||||
| 39 | Private() = default; | |||
| 40 | ||||
| 41 | /// preprocessed values | |||
| 42 | float current_process_power_value = 20.0F; | |||
| 43 | ||||
| 44 | LocalContrastContainer par; | |||
| 45 | ||||
| 46 | RandomNumberGenerator generator; | |||
| 47 | }; | |||
| 48 | ||||
| 49 | LocalContrastFilter::LocalContrastFilter(QObject* const parent) | |||
| 50 | : DImgThreadedFilter(parent), | |||
| 51 | d (new Private) | |||
| 52 | { | |||
| 53 | initFilter(); | |||
| 54 | } | |||
| 55 | ||||
| 56 | LocalContrastFilter::LocalContrastFilter(DImg* const image, QObject* const parent, const LocalContrastContainer& par) | |||
| 57 | : DImgThreadedFilter(image, parent, QLatin1String("LocalContrast")), | |||
| 58 | d (new Private) | |||
| 59 | { | |||
| 60 | d->par = par; | |||
| 61 | d->generator.seedByTime(); | |||
| 62 | initFilter(); | |||
| 63 | } | |||
| 64 | ||||
| 65 | LocalContrastFilter::~LocalContrastFilter() | |||
| 66 | { | |||
| 67 | cancelFilter(); | |||
| 68 | ||||
| 69 | delete d; | |||
| 70 | } | |||
| 71 | ||||
| 72 | QString LocalContrastFilter::DisplayableName() | |||
| 73 | { | |||
| 74 | return QString::fromUtf8(I18N_NOOP("Local Contrast Filter")kli18n("Local Contrast Filter").untranslatedText()); | |||
| 75 | } | |||
| 76 | ||||
| 77 | void LocalContrastFilter::filterImage() | |||
| 78 | { | |||
| 79 | if (!m_orgImage.isNull()) | |||
| ||||
| 80 | { | |||
| 81 | int size = m_orgImage.width() * m_orgImage.height() * 3; | |||
| 82 | int i, j; | |||
| 83 | ||||
| 84 | d->generator.reseed(); | |||
| 85 | ||||
| 86 | if (m_orgImage.sixteenBit()) | |||
| 87 | { | |||
| 88 | // sixteen bit image | |||
| 89 | ||||
| 90 | QScopedArrayPointer<unsigned short> data(new unsigned short[size] {}); | |||
| 91 | unsigned short* dataImg = reinterpret_cast<unsigned short*>(m_orgImage.bits()); | |||
| 92 | ||||
| 93 | for (i = 0, j = 0 ; runningFlag() && (i < size) ; i += 3, j += 4) | |||
| 94 | { | |||
| 95 | data[i] = dataImg[j]; | |||
| 96 | data[i + 1] = dataImg[j + 1]; | |||
| 97 | data[i + 2] = dataImg[j + 2]; | |||
| 98 | } | |||
| 99 | ||||
| 100 | postProgress(10); | |||
| 101 | ||||
| 102 | process16bitRgbImage(data.data(), m_orgImage.width(), m_orgImage.height()); | |||
| 103 | ||||
| 104 | for (uint x = 0 ; runningFlag() && (x < m_orgImage.width()) ; ++x) | |||
| 105 | { | |||
| 106 | for (uint y = 0 ; runningFlag() && (y < m_orgImage.height()) ; ++y) | |||
| 107 | { | |||
| 108 | i = (m_orgImage.width() * y + x) * 3; | |||
| 109 | m_destImage.setPixelColor(x, y, DColor((unsigned short)data[i + 2], | |||
| ||||
| 110 | (unsigned short)data[i + 1], | |||
| 111 | (unsigned short)data[i], | |||
| 112 | 65535, true)); | |||
| 113 | } | |||
| 114 | } | |||
| 115 | ||||
| 116 | postProgress(90); | |||
| 117 | } | |||
| 118 | else | |||
| 119 | { | |||
| 120 | // eight bit image | |||
| 121 | ||||
| 122 | QScopedArrayPointer<uchar> data(new uchar[size] {}); | |||
| 123 | ||||
| 124 | for (i = 0, j = 0 ; runningFlag() && (i < size) ; i += 3, j += 4) | |||
| 125 | { | |||
| 126 | data[i] = m_orgImage.bits()[j]; | |||
| 127 | data[i + 1] = m_orgImage.bits()[j + 1]; | |||
| 128 | data[i + 2] = m_orgImage.bits()[j + 2]; | |||
| 129 | } | |||
| 130 | ||||
| 131 | postProgress(10); | |||
| 132 | ||||
| 133 | process8bitRgbImage(data.data(), m_orgImage.width(), m_orgImage.height()); | |||
| 134 | ||||
| 135 | for (uint x = 0 ; runningFlag() && (x < m_orgImage.width()) ; ++x) | |||
| 136 | { | |||
| 137 | for (uint y = 0 ; runningFlag() && (y < m_orgImage.height()) ; ++y) | |||
| 138 | { | |||
| 139 | i = (m_orgImage.width() * y + x) * 3; | |||
| 140 | m_destImage.setPixelColor(x, y, DColor(data[i + 2], data[i + 1], data[i], 255, false)); | |||
| 141 | } | |||
| 142 | } | |||
| 143 | ||||
| 144 | postProgress(90); | |||
| 145 | } | |||
| 146 | } | |||
| 147 | ||||
| 148 | postProgress(100); | |||
| 149 | } | |||
| 150 | ||||
| 151 | void LocalContrastFilter::process8bitRgbImage(unsigned char* const img, int sizex, int sizey) | |||
| 152 | { | |||
| 153 | int size = sizex * sizey; | |||
| 154 | QScopedArrayPointer<float> tmpimage(new float[size * 3] {}); | |||
| 155 | ||||
| 156 | for (int i = 0 ; runningFlag() && (i < size * 3) ; ++i) | |||
| 157 | { | |||
| 158 | // convert to floating point | |||
| 159 | ||||
| 160 | tmpimage[i] = (float)(img[i] / 255.0); | |||
| 161 | } | |||
| 162 | ||||
| 163 | postProgress(20); | |||
| 164 | ||||
| 165 | processRgbImage(tmpimage.data(), sizex, sizey); | |||
| 166 | ||||
| 167 | // convert back to 8 bits (with dithering) | |||
| 168 | ||||
| 169 | int pos = 0; | |||
| 170 | ||||
| 171 | for (int i = 0 ; runningFlag() && (i < size) ; ++i) | |||
| 172 | { | |||
| 173 | float dither = d->generator.number(0.0, 1.0); | |||
| 174 | img[pos] = (int)(tmpimage[pos] * 255.0 + dither); | |||
| 175 | img[pos + 1] = (int)(tmpimage[pos + 1] * 255.0 + dither); | |||
| 176 | img[pos + 2] = (int)(tmpimage[pos + 2] * 255.0 + dither); | |||
| 177 | pos += 3; | |||
| 178 | } | |||
| 179 | ||||
| 180 | postProgress(80); | |||
| 181 | } | |||
| 182 | ||||
| 183 | void LocalContrastFilter::process16bitRgbImage(unsigned short* const img, int sizex, int sizey) | |||
| 184 | { | |||
| 185 | int size = sizex * sizey; | |||
| 186 | QScopedArrayPointer<float> tmpimage(new float[size * 3]); | |||
| 187 | ||||
| 188 | for (int i = 0 ; runningFlag() && (i < size * 3) ; ++i) | |||
| 189 | { | |||
| 190 | // convert to floating point | |||
| 191 | ||||
| 192 | tmpimage[i] = (float)(img[i] / 65535.0); | |||
| 193 | } | |||
| 194 | ||||
| 195 | postProgress(20); | |||
| 196 | ||||
| 197 | processRgbImage(tmpimage.data(), sizex, sizey); | |||
| 198 | ||||
| 199 | // convert back to 16 bits (with dithering) | |||
| 200 | ||||
| 201 | int pos = 0; | |||
| 202 | ||||
| 203 | for (int i = 0 ; runningFlag() && (i < size) ; ++i) | |||
| 204 | { | |||
| 205 | float dither = d->generator.number(0.0, 1.0); | |||
| 206 | img[pos] = (int)(tmpimage[pos] * 65535.0 + dither); | |||
| 207 | img[pos + 1] = (int)(tmpimage[pos + 1] * 65535.0 + dither); | |||
| 208 | img[pos + 2] = (int)(tmpimage[pos + 2] * 65535.0 + dither); | |||
| 209 | pos += 3; | |||
| 210 | } | |||
| 211 | ||||
| 212 | postProgress(80); | |||
| 213 | } | |||
| 214 | ||||
| 215 | float LocalContrastFilter::func(float x1, float x2) | |||
| 216 | { | |||
| 217 | float result = 0.5; | |||
| 218 | float p; | |||
| 219 | ||||
| 220 | switch (d->par.functionId) | |||
| 221 | { | |||
| 222 | case 0: // power function | |||
| 223 | { | |||
| 224 | p = (float)(qPow((double)10.0, (double)qFabs((x2 * 2.0 - 1.0)) * d->current_process_power_value * 0.02)); | |||
| 225 | ||||
| 226 | if (x2 >= 0.5) | |||
| 227 | { | |||
| 228 | result = qPow(x1, p); | |||
| 229 | } | |||
| 230 | else | |||
| 231 | { | |||
| 232 | result = (float)(1.0 - qPow((double)1.0 - x1, (double)p)); | |||
| 233 | } | |||
| 234 | ||||
| 235 | break; | |||
| 236 | } | |||
| 237 | ||||
| 238 | case 1: // linear function | |||
| 239 | { | |||
| 240 | p = (float)(1.0 / (1 + qExp(-(x2 * 2.0 - 1.0) * d->current_process_power_value * 0.04))); | |||
| 241 | result = (x1 < p) ? (float)(x1 * (1.0 - p) / p) : (float)((1.0 - p) + (x1 - p) * p / (1.0 - p)); | |||
| 242 | break; | |||
| 243 | } | |||
| 244 | } | |||
| 245 | ||||
| 246 | return result; | |||
| 247 | } | |||
| 248 | ||||
| 249 | void LocalContrastFilter::blurMultithreaded(uint start, uint stop, float* const img, float* const blurimage) | |||
| 250 | { | |||
| 251 | uint pos = start * 3; | |||
| 252 | ||||
| 253 | for (uint i = start ; runningFlag() && (i < stop) ; ++i) | |||
| 254 | { | |||
| 255 | float src_r = img[pos]; | |||
| 256 | float src_g = img[pos + 1]; | |||
| 257 | float src_b = img[pos + 2]; | |||
| 258 | ||||
| 259 | float blur = blurimage[i]; | |||
| 260 | ||||
| 261 | float dest_r = func(src_r, blur); | |||
| 262 | float dest_g = func(src_g, blur); | |||
| 263 | float dest_b = func(src_b, blur); | |||
| 264 | ||||
| 265 | img[pos] = dest_r; | |||
| 266 | img[pos + 1] = dest_g; | |||
| 267 | img[pos + 2] = dest_b; | |||
| 268 | ||||
| 269 | pos += 3; | |||
| 270 | } | |||
| 271 | } | |||
| 272 | ||||
| 273 | void LocalContrastFilter::saturationMultithreaded(uint start, uint stop, float* const img, float* const srcimg) | |||
| 274 | { | |||
| 275 | float src_h, src_s, src_v; | |||
| 276 | float dest_h, dest_s, dest_v; | |||
| 277 | float destSaturation, s1; | |||
| 278 | ||||
| 279 | uint pos = start * 3; | |||
| 280 | int highSaturationValue = 100 - d->par.highSaturation; | |||
| 281 | int lowSaturationValue = 100 - d->par.lowSaturation; | |||
| 282 | ||||
| 283 | for (uint i = start ; runningFlag() && (i < stop) ; ++i) | |||
| 284 | { | |||
| 285 | rgb2hsv(srcimg[pos], srcimg[pos + 1], srcimg[pos + 2], src_h, src_s, src_v); | |||
| 286 | rgb2hsv(img[pos], img[pos + 1], img[pos + 2], dest_h, dest_s, dest_v); | |||
| 287 | ||||
| 288 | destSaturation = (float)((src_s * highSaturationValue + dest_s * (100.0 - highSaturationValue)) * 0.01); | |||
| 289 | ||||
| 290 | if (dest_v > src_v) | |||
| 291 | { | |||
| 292 | s1 = (float)(destSaturation * src_v / (dest_v + 1.0 / 255.0)); | |||
| 293 | destSaturation = (float)((lowSaturationValue * s1 + d->par.lowSaturation * destSaturation) * 0.01); | |||
| 294 | } | |||
| 295 | ||||
| 296 | hsv2rgb(dest_h, destSaturation, dest_v, img[pos], img[pos + 1], img[pos + 2]); | |||
| 297 | ||||
| 298 | pos += 3; | |||
| 299 | } | |||
| 300 | } | |||
| 301 | ||||
| 302 | void LocalContrastFilter::processRgbImage(float* const img, int sizex, int sizey) | |||
| 303 | { | |||
| 304 | int size = sizex * sizey; | |||
| 305 | QScopedArrayPointer<float> blurimage(new float[size]); | |||
| 306 | QScopedArrayPointer<float> srcimg(new float[size * 3]); | |||
| 307 | ||||
| 308 | for (int i = 0 ; i < (size * 3) ; ++i) | |||
| 309 | { | |||
| 310 | srcimg[i] = img[i]; | |||
| 311 | } | |||
| 312 | ||||
| 313 | postProgress(30); | |||
| 314 | ||||
| 315 | if (d->par.stretchContrast) | |||
| 316 | { | |||
| 317 | stretchContrast(img, size * 3); | |||
| 318 | } | |||
| 319 | ||||
| 320 | postProgress(40); | |||
| 321 | ||||
| 322 | QList<int> vals = multithreadedSteps(size); | |||
| 323 | int pos = 0; | |||
| 324 | ||||
| 325 | for (int nstage = 0 ; runningFlag() && (nstage < TONEMAPPING_MAX_STAGES4) ; ++nstage) | |||
| 326 | { | |||
| 327 | if (d->par.stage[nstage].enabled) | |||
| 328 | { | |||
| 329 | // compute the desatured image | |||
| 330 | ||||
| 331 | pos = 0; | |||
| 332 | ||||
| 333 | for (int i = 0 ; runningFlag() && (i < size) ; ++i) | |||
| 334 | { | |||
| 335 | blurimage[i] = (float)((img[pos] + img[pos + 1] + img[pos + 2]) / 3.0); | |||
| 336 | pos += 3; | |||
| 337 | } | |||
| 338 | ||||
| 339 | d->current_process_power_value = d->par.getPower(nstage); | |||
| 340 | ||||
| 341 | // blur | |||
| 342 | ||||
| 343 | inplaceBlur(blurimage.data(), sizex, sizey, d->par.getBlur(nstage)); | |||
| 344 | ||||
| 345 | QList <QFuture<void> > tasks; | |||
| 346 | ||||
| 347 | for (int j = 0 ; runningFlag() && (j < vals.count()-1) ; ++j) | |||
| 348 | { | |||
| 349 | tasks.append(QtConcurrent::run( | |||
| 350 | ||||
| 351 | #if (QT_VERSION((6<<16)|(8<<8)|(0)) >= QT_VERSION_CHECK(6, 0, 0)((6<<16)|(0<<8)|(0))) | |||
| 352 | ||||
| 353 | &LocalContrastFilter::blurMultithreaded, this, | |||
| 354 | ||||
| 355 | #else | |||
| 356 | ||||
| 357 | this, &LocalContrastFilter::blurMultithreaded, | |||
| 358 | ||||
| 359 | #endif | |||
| 360 | ||||
| 361 | vals[j], | |||
| 362 | vals[j+1], | |||
| 363 | img, | |||
| 364 | blurimage.data() | |||
| 365 | ) | |||
| 366 | ); | |||
| 367 | } | |||
| 368 | ||||
| 369 | for (QFuture<void> t : std::as_const(tasks)) | |||
| 370 | { | |||
| 371 | t.waitForFinished(); | |||
| 372 | } | |||
| 373 | } | |||
| 374 | ||||
| 375 | postProgress(50 + nstage * 5); | |||
| 376 | } | |||
| 377 | ||||
| 378 | if ((d->par.highSaturation != 100) || (d->par.lowSaturation != 100)) | |||
| 379 | { | |||
| 380 | qCDebug(DIGIKAM_DIMG_LOG)for (QLoggingCategoryMacroHolder<QtDebugMsg> qt_category ((DIGIKAM_DIMG_LOG)()); qt_category; qt_category.control = false ) QMessageLogger(static_cast<const char *>("/mnt/data/Devel/8.x/core/libs/dimg/filters/lc/localcontrastfilter.cpp" ), 380, static_cast<const char *>(__PRETTY_FUNCTION__), qt_category.name()).debug() << "highSaturation : " << d->par.highSaturation; | |||
| 381 | qCDebug(DIGIKAM_DIMG_LOG)for (QLoggingCategoryMacroHolder<QtDebugMsg> qt_category ((DIGIKAM_DIMG_LOG)()); qt_category; qt_category.control = false ) QMessageLogger(static_cast<const char *>("/mnt/data/Devel/8.x/core/libs/dimg/filters/lc/localcontrastfilter.cpp" ), 381, static_cast<const char *>(__PRETTY_FUNCTION__), qt_category.name()).debug() << "lowSaturation : " << d->par.lowSaturation; | |||
| 382 | ||||
| 383 | QList <QFuture<void> > tasks; | |||
| 384 | ||||
| 385 | for (int j = 0 ; runningFlag() && (j < vals.count()-1) ; ++j) | |||
| 386 | { | |||
| 387 | tasks.append(QtConcurrent::run( | |||
| 388 | ||||
| 389 | #if (QT_VERSION((6<<16)|(8<<8)|(0)) >= QT_VERSION_CHECK(6, 0, 0)((6<<16)|(0<<8)|(0))) | |||
| 390 | ||||
| 391 | &LocalContrastFilter::saturationMultithreaded, this, | |||
| 392 | ||||
| 393 | #else | |||
| 394 | ||||
| 395 | this, &LocalContrastFilter::saturationMultithreaded, | |||
| 396 | ||||
| 397 | #endif | |||
| 398 | ||||
| 399 | vals[j], | |||
| 400 | vals[j+1], | |||
| 401 | img, | |||
| 402 | srcimg.data() | |||
| 403 | ) | |||
| 404 | ); | |||
| 405 | } | |||
| 406 | ||||
| 407 | for (QFuture<void> t : std::as_const(tasks)) | |||
| 408 | { | |||
| 409 | t.waitForFinished(); | |||
| 410 | } | |||
| 411 | } | |||
| 412 | ||||
| 413 | postProgress(70); | |||
| 414 | } | |||
| 415 | ||||
| 416 | void LocalContrastFilter::inplaceBlurYMultithreaded(const Args& prm) | |||
| 417 | { | |||
| 418 | for (uint y = prm.start ; runningFlag() && (y < prm.stop) ; ++y) | |||
| 419 | { | |||
| 420 | uint pos = y * prm.sizex; | |||
| 421 | float old = prm.data[pos]; | |||
| 422 | ++pos; | |||
| 423 | ||||
| 424 | for (int x = 1 ; runningFlag() && (x < prm.sizex) ; ++x) | |||
| 425 | { | |||
| 426 | old = (prm.data[pos] * (1 - prm.a) + old * prm.a) + prm.denormal_remove; | |||
| 427 | prm.data[pos] = old; | |||
| 428 | ++pos; | |||
| 429 | } | |||
| 430 | ||||
| 431 | pos = y * prm.sizex + prm.sizex - 1; | |||
| 432 | ||||
| 433 | for (int x = 1 ; runningFlag() && (x < prm.sizex) ; ++x) | |||
| 434 | { | |||
| 435 | old = (prm.data[pos] * (1 - prm.a) + old * prm.a) + prm.denormal_remove; | |||
| 436 | prm.data[pos] = old; | |||
| 437 | pos--; | |||
| 438 | } | |||
| 439 | } | |||
| 440 | } | |||
| 441 | ||||
| 442 | void LocalContrastFilter::inplaceBlurXMultithreaded(const Args& prm) | |||
| 443 | { | |||
| 444 | for (uint x = prm.start ; runningFlag() && (x < prm.stop) ; ++x) | |||
| 445 | { | |||
| 446 | uint pos = x; | |||
| 447 | float old = prm.data[pos]; | |||
| 448 | ||||
| 449 | for (int y = 1 ; runningFlag() && (y < prm.sizey) ; ++y) | |||
| 450 | { | |||
| 451 | old = (prm.data[pos] * (1 - prm.a) + old * prm.a) + prm.denormal_remove; | |||
| 452 | prm.data[pos] = old; | |||
| 453 | pos += prm.sizex; | |||
| 454 | } | |||
| 455 | ||||
| 456 | pos = x + prm.sizex * (prm.sizey - 1); | |||
| 457 | ||||
| 458 | for (int y = 1 ; runningFlag() && (y < prm.sizey) ; ++y) | |||
| 459 | { | |||
| 460 | old = (prm.data[pos] * (1 - prm.a) + old * prm.a) + prm.denormal_remove; | |||
| 461 | prm.data[pos] = old; | |||
| 462 | pos -= prm.sizex; | |||
| 463 | } | |||
| 464 | } | |||
| 465 | } | |||
| 466 | ||||
| 467 | void LocalContrastFilter::inplaceBlur(float* const data, int sizex, int sizey, float blur) | |||
| 468 | { | |||
| 469 | if (blur < 0.3) | |||
| 470 | { | |||
| 471 | return; | |||
| 472 | } | |||
| 473 | ||||
| 474 | Args prm; | |||
| 475 | ||||
| 476 | prm.a = (float)(qExp(log(0.25) / blur)); | |||
| 477 | ||||
| 478 | if ((prm.a <= 0.0) || (prm.a >= 1.0)) | |||
| 479 | { | |||
| 480 | return; | |||
| 481 | } | |||
| 482 | ||||
| 483 | prm.a *= prm.a; | |||
| 484 | prm.data = data; | |||
| 485 | prm.sizex = sizex; | |||
| 486 | prm.sizey = sizey; | |||
| 487 | prm.blur = blur; | |||
| 488 | prm.denormal_remove = (float)(1e-15); | |||
| 489 | ||||
| 490 | QList<int> valsx = multithreadedSteps(prm.sizex); | |||
| 491 | QList<int> valsy = multithreadedSteps(prm.sizey); | |||
| 492 | ||||
| 493 | for (uint stage = 0 ; runningFlag() && (stage < 2) ; ++stage) | |||
| 494 | { | |||
| 495 | QList <QFuture<void> > tasks; | |||
| 496 | ||||
| 497 | for (int j = 0 ; runningFlag() && (j < valsy.count()-1) ; ++j) | |||
| 498 | { | |||
| 499 | prm.start = valsy[j]; | |||
| 500 | prm.stop = valsy[j+1]; | |||
| 501 | ||||
| 502 | tasks.append(QtConcurrent::run( | |||
| 503 | ||||
| 504 | #if (QT_VERSION((6<<16)|(8<<8)|(0)) >= QT_VERSION_CHECK(6, 0, 0)((6<<16)|(0<<8)|(0))) | |||
| 505 | ||||
| 506 | &LocalContrastFilter::inplaceBlurYMultithreaded, this, | |||
| 507 | ||||
| 508 | #else | |||
| 509 | ||||
| 510 | this, &LocalContrastFilter::inplaceBlurYMultithreaded, | |||
| 511 | ||||
| 512 | #endif | |||
| 513 | ||||
| 514 | prm | |||
| 515 | ) | |||
| 516 | ); | |||
| 517 | } | |||
| 518 | ||||
| 519 | for (QFuture<void> t : std::as_const(tasks)) | |||
| 520 | { | |||
| 521 | t.waitForFinished(); | |||
| 522 | } | |||
| 523 | ||||
| 524 | tasks.clear(); | |||
| 525 | ||||
| 526 | for (int j = 0 ; runningFlag() && (j < valsx.count()-1) ; ++j) | |||
| 527 | { | |||
| 528 | prm.start = valsx[j]; | |||
| 529 | prm.stop = valsx[j+1]; | |||
| 530 | ||||
| 531 | tasks.append(QtConcurrent::run( | |||
| 532 | ||||
| 533 | #if (QT_VERSION((6<<16)|(8<<8)|(0)) >= QT_VERSION_CHECK(6, 0, 0)((6<<16)|(0<<8)|(0))) | |||
| 534 | ||||
| 535 | &LocalContrastFilter::inplaceBlurXMultithreaded, this, | |||
| 536 | ||||
| 537 | #else | |||
| 538 | ||||
| 539 | this, &LocalContrastFilter::inplaceBlurXMultithreaded, | |||
| 540 | ||||
| 541 | #endif | |||
| 542 | ||||
| 543 | prm | |||
| 544 | ) | |||
| 545 | ); | |||
| 546 | } | |||
| 547 | ||||
| 548 | for (QFuture<void> t : std::as_const(tasks)) | |||
| 549 | { | |||
| 550 | t.waitForFinished(); | |||
| 551 | } | |||
| 552 | } | |||
| 553 | } | |||
| 554 | ||||
| 555 | void LocalContrastFilter::stretchContrast(float* const data, int datasize) | |||
| 556 | { | |||
| 557 | // stretch the contrast | |||
| 558 | ||||
| 559 | const unsigned int histogram_size = 256; | |||
| 560 | ||||
| 561 | // first, we compute the histogram | |||
| 562 | ||||
| 563 | unsigned int histogram[histogram_size] = { 0 }; | |||
| 564 | ||||
| 565 | for (unsigned int i = 0 ; runningFlag() && (i < (unsigned int)datasize) ; ++i) | |||
| 566 | { | |||
| 567 | int m = (int)(data[i] * (histogram_size - 1)); | |||
| 568 | ||||
| 569 | if (m < 0) | |||
| 570 | { | |||
| 571 | m = 0; | |||
| 572 | } | |||
| 573 | ||||
| 574 | if (m > (int)(histogram_size - 1)) | |||
| 575 | { | |||
| 576 | m = histogram_size - 1; | |||
| 577 | } | |||
| 578 | ||||
| 579 | histogram[m]++; | |||
| 580 | } | |||
| 581 | ||||
| 582 | // I want to strip the lowest and upper 0.1 percents (in the histogram) of the pixels | |||
| 583 | int min = 0; | |||
| 584 | int max = 255; | |||
| 585 | unsigned int desired_sum = datasize / 1000; | |||
| 586 | unsigned int sum_min = 0; | |||
| 587 | unsigned int sum_max = 0; | |||
| 588 | ||||
| 589 | for (unsigned int i = 0 ; runningFlag() && (i < histogram_size) ; ++i) | |||
| 590 | { | |||
| 591 | sum_min += histogram[i]; | |||
| 592 | ||||
| 593 | if (sum_min > desired_sum) | |||
| 594 | { | |||
| 595 | min = i; | |||
| 596 | break; | |||
| 597 | } | |||
| 598 | } | |||
| 599 | ||||
| 600 | for (int i = histogram_size - 1 ; runningFlag() && (i >= 0) ; --i) | |||
| 601 | { | |||
| 602 | sum_max += histogram[i]; | |||
| 603 | ||||
| 604 | if (sum_max > desired_sum) | |||
| 605 | { | |||
| 606 | max = i; | |||
| 607 | break; | |||
| 608 | } | |||
| 609 | } | |||
| 610 | ||||
| 611 | if (min >= max) | |||
| 612 | { | |||
| 613 | min = 0; | |||
| 614 | max = 255; | |||
| 615 | } | |||
| 616 | ||||
| 617 | float min_src_val = (float)(min / 255.0); | |||
| 618 | float max_src_val = (float)(max / 255.0); | |||
| 619 | ||||
| 620 | for (int i = 0 ; runningFlag() && (i < datasize) ; ++i) | |||
| 621 | { | |||
| 622 | // stretch the contrast | |||
| 623 | ||||
| 624 | float x = data[i]; | |||
| 625 | x = (x - min_src_val) / (max_src_val - min_src_val); | |||
| 626 | ||||
| 627 | if (x < 0.0) | |||
| 628 | { | |||
| 629 | x = 0.0; | |||
| 630 | } | |||
| 631 | ||||
| 632 | if (x > 1.0) | |||
| 633 | { | |||
| 634 | x = 1.0; | |||
| 635 | } | |||
| 636 | ||||
| 637 | data[i] = x; | |||
| 638 | } | |||
| 639 | } | |||
| 640 | ||||
| 641 | void LocalContrastFilter::rgb2hsv(const float& r, const float& g, const float& b, float& h, float& s, float& v) | |||
| 642 | { | |||
| 643 | float maxrg = (r > g) ? r : g; | |||
| 644 | float max = (maxrg > b) ? maxrg : b; | |||
| 645 | float minrg = (r < g) ? r : g; | |||
| 646 | float min = (minrg < b) ? minrg : b; | |||
| 647 | float delta = max - min; | |||
| 648 | ||||
| 649 | // hue | |||
| 650 | ||||
| 651 | if (min == max) | |||
| 652 | { | |||
| 653 | h = 0.0; | |||
| 654 | } | |||
| 655 | else | |||
| 656 | { | |||
| 657 | if (max == r) | |||
| 658 | { | |||
| 659 | h = (float)(fmod(60.0 * (g - b) / delta + 360.0, 360.0)); | |||
| 660 | } | |||
| 661 | else | |||
| 662 | { | |||
| 663 | if (max == g) | |||
| 664 | { | |||
| 665 | h = (float)(60.0 * (b - r) / delta + 120.0); | |||
| 666 | } | |||
| 667 | else | |||
| 668 | { | |||
| 669 | // max==b | |||
| 670 | h = (float)(60.0 * (r - g) / delta + 240.0); | |||
| 671 | } | |||
| 672 | } | |||
| 673 | } | |||
| 674 | ||||
| 675 | // saturation | |||
| 676 | ||||
| 677 | if (max < 1e-6) | |||
| 678 | { | |||
| 679 | s = 0; | |||
| 680 | } | |||
| 681 | else | |||
| 682 | { | |||
| 683 | s = (float)(1.0 - min / max); | |||
| 684 | } | |||
| 685 | ||||
| 686 | // value | |||
| 687 | ||||
| 688 | v = max; | |||
| 689 | } | |||
| 690 | ||||
| 691 | void LocalContrastFilter::hsv2rgb(const float& h, const float& s, const float& v, float& r, float& g, float& b) | |||
| 692 | { | |||
| 693 | float hfi = (float)(floor(h / 60.0)); | |||
| 694 | float f = (float)((h / 60.0) - hfi); | |||
| 695 | int hi = ((int)hfi) % 6; | |||
| 696 | float p = (float)(v * (1.0 - s)); | |||
| 697 | float q = (float)(v * (1.0 - f * s)); | |||
| 698 | float t = (float)(v * (1.0 - (1.0 - f) * s)); | |||
| 699 | ||||
| 700 | switch (hi) | |||
| 701 | { | |||
| 702 | case 0: | |||
| 703 | { | |||
| 704 | r = v; | |||
| 705 | g = t; | |||
| 706 | b = p; | |||
| 707 | break; | |||
| 708 | } | |||
| 709 | ||||
| 710 | case 1: | |||
| 711 | { | |||
| 712 | r = q; | |||
| 713 | g = v; | |||
| 714 | b = p; | |||
| 715 | break; | |||
| 716 | } | |||
| 717 | ||||
| 718 | case 2: | |||
| 719 | { | |||
| 720 | r = p; | |||
| 721 | g = v; | |||
| 722 | b = t; | |||
| 723 | break; | |||
| 724 | } | |||
| 725 | ||||
| 726 | case 3: | |||
| 727 | { | |||
| 728 | r = p; | |||
| 729 | g = q; | |||
| 730 | b = v; | |||
| 731 | break; | |||
| 732 | } | |||
| 733 | ||||
| 734 | case 4: | |||
| 735 | { | |||
| 736 | r = t; | |||
| 737 | g = p; | |||
| 738 | b = v; | |||
| 739 | break; | |||
| 740 | } | |||
| 741 | ||||
| 742 | case 5: | |||
| 743 | { | |||
| 744 | r = v; | |||
| 745 | g = p; | |||
| 746 | b = q; | |||
| 747 | break; | |||
| 748 | } | |||
| 749 | } | |||
| 750 | } | |||
| 751 | ||||
| 752 | FilterAction LocalContrastFilter::filterAction() | |||
| 753 | { | |||
| 754 | FilterAction action(FilterIdentifier(), CurrentVersion()); | |||
| 755 | action.setDisplayableName(DisplayableName()); | |||
| 756 | ||||
| 757 | action.addParameter(QLatin1String("functionId"), d->par.functionId); | |||
| 758 | action.addParameter(QLatin1String("highSaturation"), d->par.highSaturation); | |||
| 759 | action.addParameter(QLatin1String("lowSaturation"), d->par.lowSaturation); | |||
| 760 | action.addParameter(QLatin1String("stretchContrast"), d->par.stretchContrast); | |||
| 761 | ||||
| 762 | for (int nstage = 0 ; nstage < TONEMAPPING_MAX_STAGES4 ; ++nstage) | |||
| 763 | { | |||
| 764 | QString stage = QString::fromLatin1("stage[%1]:").arg(nstage); | |||
| 765 | action.addParameter(stage + QLatin1String("enabled"), d->par.stage[nstage].enabled); | |||
| 766 | ||||
| 767 | if (d->par.stage[nstage].enabled) | |||
| 768 | { | |||
| 769 | action.addParameter(stage + QLatin1String("power"), d->par.stage[nstage].power); | |||
| 770 | action.addParameter(stage + QLatin1String("blur"), d->par.stage[nstage].blur); | |||
| 771 | } | |||
| 772 | } | |||
| 773 | ||||
| 774 | action.addParameter(QLatin1String("randomSeed"), d->generator.currentSeed()); | |||
| 775 | ||||
| 776 | return action; | |||
| 777 | } | |||
| 778 | ||||
| 779 | void LocalContrastFilter::readParameters(const FilterAction& action) | |||
| 780 | { | |||
| 781 | d->par.functionId = action.parameter(QLatin1String("functionId")).toInt(); | |||
| 782 | d->par.highSaturation = action.parameter(QLatin1String("highSaturation")).toInt(); | |||
| 783 | d->par.lowSaturation = action.parameter(QLatin1String("lowSaturation")).toInt(); | |||
| 784 | d->par.stretchContrast = action.parameter(QLatin1String("stretchContrast")).toBool(); | |||
| 785 | ||||
| 786 | for (int nstage = 0 ; nstage < TONEMAPPING_MAX_STAGES4 ; ++nstage) | |||
| 787 | { | |||
| 788 | QString stage = QString::fromLatin1("stage[%1]:").arg(nstage); | |||
| 789 | d->par.stage[nstage].enabled = action.parameter(stage + QLatin1String("enabled")).toBool(); | |||
| 790 | ||||
| 791 | if (d->par.stage[nstage].enabled) | |||
| 792 | { | |||
| 793 | d->par.stage[nstage].power = action.parameter(stage + QLatin1String("power")).toFloat(); | |||
| 794 | d->par.stage[nstage].blur = action.parameter(stage + QLatin1String("blur")).toFloat(); | |||
| 795 | } | |||
| 796 | } | |||
| 797 | ||||
| 798 | d->generator.seed(action.parameter(QLatin1String("randomSeed")).toUInt()); | |||
| 799 | } | |||
| 800 | ||||
| 801 | } // namespace Digikam | |||
| 802 | ||||
| 803 | #include "moc_localcontrastfilter.cpp" |
| 1 | // Copyright (C) 2016 The Qt Company Ltd. |
| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
| 3 | |
| 4 | #ifndef QSCOPEDPOINTER_H |
| 5 | #define QSCOPEDPOINTER_H |
| 6 | |
| 7 | #include <QtCore/qglobal.h> |
| 8 | |
| 9 | #include <stdlib.h> |
| 10 | |
| 11 | QT_BEGIN_NAMESPACE |
| 12 | |
| 13 | template <typename T> |
| 14 | struct QScopedPointerDeleter |
| 15 | { |
| 16 | static inline void cleanup(T *pointer) noexcept |
| 17 | { |
| 18 | // Enforce a complete type. |
| 19 | // If you get a compile error here, read the section on forward declared |
| 20 | // classes in the QScopedPointer documentation. |
| 21 | typedef char IsIncompleteType[ sizeof(T) ? 1 : -1 ]; |
| 22 | (void) sizeof(IsIncompleteType); |
| 23 | |
| 24 | delete pointer; |
| 25 | } |
| 26 | void operator()(T *pointer) const noexcept |
| 27 | { |
| 28 | cleanup(pointer); |
| 29 | } |
| 30 | }; |
| 31 | |
| 32 | template <typename T> |
| 33 | struct QScopedPointerArrayDeleter |
| 34 | { |
| 35 | static inline void cleanup(T *pointer) noexcept |
| 36 | { |
| 37 | // Enforce a complete type. |
| 38 | // If you get a compile error here, read the section on forward declared |
| 39 | // classes in the QScopedPointer documentation. |
| 40 | typedef char IsIncompleteType[ sizeof(T) ? 1 : -1 ]; |
| 41 | (void) sizeof(IsIncompleteType); |
| 42 | |
| 43 | delete[] pointer; |
| 44 | } |
| 45 | void operator()(T *pointer) const noexcept |
| 46 | { |
| 47 | cleanup(pointer); |
| 48 | } |
| 49 | }; |
| 50 | |
| 51 | struct QScopedPointerPodDeleter |
| 52 | { |
| 53 | static inline void cleanup(void *pointer) noexcept { free(pointer); } |
| 54 | void operator()(void *pointer) const noexcept { cleanup(pointer); } |
| 55 | }; |
| 56 | |
| 57 | #ifndef QT_NO_QOBJECT |
| 58 | template <typename T> |
| 59 | struct QScopedPointerObjectDeleteLater |
| 60 | { |
| 61 | static inline void cleanup(T *pointer) { if (pointer) pointer->deleteLater(); } |
| 62 | void operator()(T *pointer) const { cleanup(pointer); } |
| 63 | }; |
| 64 | |
| 65 | class QObject; |
| 66 | typedef QScopedPointerObjectDeleteLater<QObject> QScopedPointerDeleteLater; |
| 67 | #endif |
| 68 | |
| 69 | template <typename T, typename Cleanup = QScopedPointerDeleter<T> > |
| 70 | class QScopedPointer |
| 71 | { |
| 72 | public: |
| 73 | Q_NODISCARD_CTOR[[nodiscard]] |
| 74 | explicit QScopedPointer(T *p = nullptr) noexcept : d(p) |
| 75 | { |
| 76 | } |
| 77 | |
| 78 | inline ~QScopedPointer() |
| 79 | { |
| 80 | T *oldD = this->d; |
| 81 | Cleanup::cleanup(oldD); |
| 82 | } |
| 83 | |
| 84 | inline T &operator*() const |
| 85 | { |
| 86 | Q_ASSERT(d)((d) ? static_cast<void>(0) : qt_assert("d", "/opt/qt6/include/QtCore/qscopedpointer.h" , 86)); |
| 87 | return *d; |
| 88 | } |
| 89 | |
| 90 | T *operator->() const noexcept |
| 91 | { |
| 92 | return d; |
| 93 | } |
| 94 | |
| 95 | bool operator!() const noexcept |
| 96 | { |
| 97 | return !d; |
| 98 | } |
| 99 | |
| 100 | explicit operator bool() const |
| 101 | { |
| 102 | return !isNull(); |
| 103 | } |
| 104 | |
| 105 | T *data() const noexcept |
| 106 | { |
| 107 | return d; |
| 108 | } |
| 109 | |
| 110 | T *get() const noexcept |
| 111 | { |
| 112 | return d; |
| 113 | } |
| 114 | |
| 115 | bool isNull() const noexcept |
| 116 | { |
| 117 | return !d; |
| 118 | } |
| 119 | |
| 120 | void reset(T *other = nullptr) noexcept(noexcept(Cleanup::cleanup(std::declval<T *>()))) |
| 121 | { |
| 122 | if (d == other) |
| 123 | return; |
| 124 | T *oldD = std::exchange(d, other); |
| 125 | Cleanup::cleanup(oldD); |
| 126 | } |
| 127 | |
| 128 | #if QT_DEPRECATED_SINCE(6, 1)(((6<<16)|(1<<8)|(0)) > 0x050E00) |
| 129 | QT_DEPRECATED_VERSION_X_6_1("Use std::unique_ptr instead, and call release().") |
| 130 | T *take() noexcept |
| 131 | { |
| 132 | T *oldD = std::exchange(d, nullptr); |
| 133 | return oldD; |
| 134 | } |
| 135 | #endif |
| 136 | |
| 137 | #if QT_DEPRECATED_SINCE(6, 2)(((6<<16)|(2<<8)|(0)) > 0x050E00) |
| 138 | QT_DEPRECATED_VERSION_X_6_2("Use std::unique_ptr instead of QScopedPointer.") |
| 139 | void swap(QScopedPointer<T, Cleanup> &other) noexcept |
| 140 | { |
| 141 | qt_ptr_swap(d, other.d); |
| 142 | } |
| 143 | #endif |
| 144 | |
| 145 | typedef T *pointer; |
| 146 | |
| 147 | friend bool operator==(const QScopedPointer<T, Cleanup> &lhs, const QScopedPointer<T, Cleanup> &rhs) noexcept |
| 148 | { |
| 149 | return lhs.data() == rhs.data(); |
| 150 | } |
| 151 | |
| 152 | friend bool operator!=(const QScopedPointer<T, Cleanup> &lhs, const QScopedPointer<T, Cleanup> &rhs) noexcept |
| 153 | { |
| 154 | return lhs.data() != rhs.data(); |
| 155 | } |
| 156 | |
| 157 | friend bool operator==(const QScopedPointer<T, Cleanup> &lhs, std::nullptr_t) noexcept |
| 158 | { |
| 159 | return lhs.isNull(); |
| 160 | } |
| 161 | |
| 162 | friend bool operator==(std::nullptr_t, const QScopedPointer<T, Cleanup> &rhs) noexcept |
| 163 | { |
| 164 | return rhs.isNull(); |
| 165 | } |
| 166 | |
| 167 | friend bool operator!=(const QScopedPointer<T, Cleanup> &lhs, std::nullptr_t) noexcept |
| 168 | { |
| 169 | return !lhs.isNull(); |
| 170 | } |
| 171 | |
| 172 | friend bool operator!=(std::nullptr_t, const QScopedPointer<T, Cleanup> &rhs) noexcept |
| 173 | { |
| 174 | return !rhs.isNull(); |
| 175 | } |
| 176 | |
| 177 | #if QT_DEPRECATED_SINCE(6, 2)(((6<<16)|(2<<8)|(0)) > 0x050E00) |
| 178 | QT_DEPRECATED_VERSION_X_6_2("Use std::unique_ptr instead of QScopedPointer.") |
| 179 | friend void swap(QScopedPointer<T, Cleanup> &p1, QScopedPointer<T, Cleanup> &p2) noexcept |
| 180 | { p1.swap(p2); } |
| 181 | #endif |
| 182 | |
| 183 | protected: |
| 184 | T *d; |
| 185 | |
| 186 | private: |
| 187 | Q_DISABLE_COPY_MOVE(QScopedPointer)QScopedPointer(const QScopedPointer &) = delete; QScopedPointer &operator=(const QScopedPointer &) = delete; QScopedPointer (QScopedPointer &&) = delete; QScopedPointer &operator =(QScopedPointer &&) = delete; |
| 188 | }; |
| 189 | |
| 190 | template <typename T, typename Cleanup = QScopedPointerArrayDeleter<T> > |
| 191 | class QScopedArrayPointer : public QScopedPointer<T, Cleanup> |
| 192 | { |
| 193 | template <typename Ptr> |
| 194 | using if_same_type = typename std::enable_if<std::is_same<typename std::remove_cv<T>::type, Ptr>::value, bool>::type; |
| 195 | public: |
| 196 | Q_NODISCARD_CTOR[[nodiscard]] |
| 197 | inline QScopedArrayPointer() : QScopedPointer<T, Cleanup>(nullptr) {} |
| 198 | inline ~QScopedArrayPointer() = default; |
| 199 | |
| 200 | template <typename D, if_same_type<D> = true> |
| 201 | Q_NODISCARD_CTOR[[nodiscard]] |
| 202 | explicit QScopedArrayPointer(D *p) |
| 203 | : QScopedPointer<T, Cleanup>(p) |
| 204 | { |
| 205 | } |
| 206 | |
| 207 | T &operator[](qsizetype i) |
| 208 | { |
| 209 | return this->d[i]; |
| 210 | } |
| 211 | |
| 212 | const T &operator[](qsizetype i) const |
| 213 | { |
| 214 | return this->d[i]; |
| 215 | } |
| 216 | |
| 217 | #if QT_DEPRECATED_SINCE(6, 2)(((6<<16)|(2<<8)|(0)) > 0x050E00) |
| 218 | QT_DEPRECATED_VERSION_X_6_2("Use std::unique_ptr instead of QScopedArrayPointer.") |
| 219 | void swap(QScopedArrayPointer &other) noexcept // prevent QScopedPointer <->QScopedArrayPointer swaps |
| 220 | { QScopedPointer<T, Cleanup>::swap(other); } |
| 221 | #endif |
| 222 | |
| 223 | private: |
| 224 | explicit inline QScopedArrayPointer(void *) |
| 225 | { |
| 226 | // Enforce the same type. |
| 227 | |
| 228 | // If you get a compile error here, make sure you declare |
| 229 | // QScopedArrayPointer with the same template type as you pass to the |
| 230 | // constructor. See also the QScopedPointer documentation. |
| 231 | |
| 232 | // Storing a scalar array as a pointer to a different type is not |
| 233 | // allowed and results in undefined behavior. |
| 234 | } |
| 235 | |
| 236 | Q_DISABLE_COPY_MOVE(QScopedArrayPointer)QScopedArrayPointer(const QScopedArrayPointer &) = delete ; QScopedArrayPointer &operator=(const QScopedArrayPointer &) = delete; QScopedArrayPointer(QScopedArrayPointer && ) = delete; QScopedArrayPointer &operator=(QScopedArrayPointer &&) = delete; |
| 237 | }; |
| 238 | |
| 239 | #if QT_DEPRECATED_SINCE(6, 2)(((6<<16)|(2<<8)|(0)) > 0x050E00) |
| 240 | template <typename T, typename Cleanup> |
| 241 | QT_DEPRECATED_VERSION_X_6_2("Use std::unique_ptr instead of QScopedArrayPointer.") |
| 242 | inline void swap(QScopedArrayPointer<T, Cleanup> &lhs, QScopedArrayPointer<T, Cleanup> &rhs) noexcept |
| 243 | { lhs.swap(rhs); } |
| 244 | #endif |
| 245 | |
| 246 | QT_END_NAMESPACE |
| 247 | |
| 248 | #endif // QSCOPEDPOINTER_H |