git.sesse.net Git - kdenlive/blob - src/vectorscope.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2010 by Simon Andreas Eugster (simon.eu@gmail.com)      *
   3  *   This file is part of kdenlive. See www.kdenlive.org.                  *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  ***************************************************************************/
  10
  11
  12 #include <QAction>
  13 #include <QColor>
  14 #include <QDebug>
  15 #include <QMouseEvent>
  16 #include <QMenu>
  17 #include <QPainter>
  18
  19 #include <QTime>
  20
  21 #include "colorplaneexport.h"
  22 #include "colortools.h"
  23 #include "renderer.h"
  24 #include "vectorscope.h"
  25 #include "vectorscopegenerator.h"
  26
  27 const float P75 = .75;
  28 const unsigned char DEFAULT_Y = 255;
  29
  30 const QPointF YUV_R(-.147,  .615);
  31 const QPointF YUV_G(-.289, -.515);
  32 const QPointF YUV_B(.437, -.100);
  33 const QPointF YUV_Cy(.147, -.615);
  34 const QPointF YUV_Mg(.289,  .515);
  35 const QPointF YUV_Yl(-.437,  .100);
  36
  37
  38 Vectorscope::Vectorscope(Monitor *projMonitor, Monitor *clipMonitor, QWidget *parent) :
  39     AbstractScopeWidget(projMonitor, clipMonitor, parent),
  40     m_gain(1),
  41     m_circleEnabled(false)
  42 {
  43     ui = new Ui::Vectorscope_UI();
  44     ui->setupUi(this);
  45
  46     m_colorTools = new ColorTools();
  47     m_colorPlaneExport = new ColorPlaneExport(this);
  48     m_vectorscopeGenerator = new VectorscopeGenerator();
  49
  50     ui->paintMode->addItem(i18n("Green 2"), QVariant(VectorscopeGenerator::PaintMode_Green2));
  51     ui->paintMode->addItem(i18n("Green"), QVariant(VectorscopeGenerator::PaintMode_Green));
  52     ui->paintMode->addItem(i18n("Black"), QVariant(VectorscopeGenerator::PaintMode_Black));
  53     ui->paintMode->addItem(i18n("Modified YUV (Chroma)"), QVariant(VectorscopeGenerator::PaintMode_Chroma));
  54     ui->paintMode->addItem(i18n("YUV"), QVariant(VectorscopeGenerator::PaintMode_YUV));
  55     ui->paintMode->addItem(i18n("Original Color"), QVariant(VectorscopeGenerator::PaintMode_Original));
  56
  57     ui->backgroundMode->addItem(i18n("None"), QVariant(BG_NONE));
  58     ui->backgroundMode->addItem(i18n("YUV"), QVariant(BG_YUV));
  59     ui->backgroundMode->addItem(i18n("Modified YUV (Chroma)"), QVariant(BG_CHROMA));
  60
  61     ui->sliderGain->setMinimum(0);
  62     ui->sliderGain->setMaximum(40);
  63
  64     bool b = true;
  65     b &= connect(ui->backgroundMode, SIGNAL(currentIndexChanged(int)), this, SLOT(slotBackgroundChanged()));
  66     b &= connect(ui->sliderGain, SIGNAL(valueChanged(int)), this, SLOT(slotGainChanged(int)));
  67     b &= connect(ui->paintMode, SIGNAL(currentIndexChanged(int)), this, SLOT(forceUpdateScope()));
  68     ui->sliderGain->setValue(0);
  69
  70
  71     ///// Build context menu /////
  72
  73     m_menu->addSeparator();
  74
  75     m_aExportBackground = new QAction(i18n("Export background"), this);
  76     m_menu->addAction(m_aExportBackground);
  77     b &= connect(m_aExportBackground, SIGNAL(triggered()), this, SLOT(slotExportBackground()));
  78
  79     m_a75PBox = new QAction(i18n("75% box"), this);
  80     m_a75PBox->setCheckable(true);
  81     m_menu->addAction(m_a75PBox);
  82     b &= connect(m_a75PBox, SIGNAL(changed()), this, SLOT(forceUpdateBackground()));
  83
  84     m_aAxisEnabled = new QAction(i18n("Draw axis"), this);
  85     m_aAxisEnabled->setCheckable(true);
  86     m_menu->addAction(m_aAxisEnabled);
  87     b &= connect(m_aAxisEnabled, SIGNAL(changed()), this, SLOT(forceUpdateBackground()));
  88
  89     Q_ASSERT(b);
  90
  91
  92     this->setMouseTracking(true);
  93     slotGainChanged(ui->sliderGain->value());
  94
  95     init();
  96 }
  97
  98 Vectorscope::~Vectorscope()
  99 {
 100     writeConfig();
 101
 102     delete m_colorTools;
 103     delete m_colorPlaneExport;
 104     delete m_vectorscopeGenerator;
 105
 106     delete m_aExportBackground;
 107     delete m_aAxisEnabled;
 108     delete m_a75PBox;
 109 }
 110
 111 QString Vectorscope::widgetName() const { return QString("Vectorscope"); }
 112
 113 void Vectorscope::readConfig()
 114 {
 115     AbstractScopeWidget::readConfig();
 116
 117     KSharedConfigPtr config = KGlobal::config();
 118     KConfigGroup scopeConfig(config, configName());
 119     m_a75PBox->setChecked(scopeConfig.readEntry("75PBox", false));
 120     m_aAxisEnabled->setChecked(scopeConfig.readEntry("axis", false));
 121     ui->backgroundMode->setCurrentIndex(scopeConfig.readEntry("backgroundmode").toInt());
 122     ui->paintMode->setCurrentIndex(scopeConfig.readEntry("paintmode").toInt());
 123     ui->sliderGain->setValue(scopeConfig.readEntry("gain", 1));
 124 }
 125
 126 void Vectorscope::writeConfig()
 127 {
 128     KSharedConfigPtr config = KGlobal::config();
 129     KConfigGroup scopeConfig(config, configName());
 130     scopeConfig.writeEntry("75PBox", m_a75PBox->isChecked());
 131     scopeConfig.writeEntry("axis", m_aAxisEnabled->isChecked());
 132     scopeConfig.writeEntry("backgroundmode", ui->backgroundMode->currentIndex());
 133     scopeConfig.writeEntry("paintmode", ui->paintMode->currentIndex());
 134     scopeConfig.writeEntry("gain", ui->sliderGain->value());
 135     scopeConfig.sync();
 136 }
 137
 138 QRect Vectorscope::scopeRect()
 139 {
 140     // Distance from top/left/right
 141     int offset = 6;
 142
 143     // We want to paint below the controls area. The line is the lowest element.
 144     QPoint topleft(offset, ui->verticalSpacer->geometry().y()+offset);
 145     QPoint bottomright(ui->horizontalSpacer->geometry().right()-offset, this->size().height()-offset);
 146
 147     QRect scopeRect(topleft, bottomright);
 148
 149     // Circle Width: min of width and height
 150     cw = (scopeRect.height() < scopeRect.width()) ? scopeRect.height() : scopeRect.width();
 151     scopeRect.setWidth(cw);
 152     scopeRect.setHeight(cw);
 153
 154
 155     m_centerPoint = m_vectorscopeGenerator->mapToCircle(scopeRect.size(), QPointF(0,0));
 156     pR75 = m_vectorscopeGenerator->mapToCircle(scopeRect.size(), P75*VectorscopeGenerator::scaling*YUV_R);
 157     pG75 = m_vectorscopeGenerator->mapToCircle(scopeRect.size(), P75*VectorscopeGenerator::scaling*YUV_G);
 158     pB75 = m_vectorscopeGenerator->mapToCircle(scopeRect.size(), P75*VectorscopeGenerator::scaling*YUV_B);
 159     pCy75 = m_vectorscopeGenerator->mapToCircle(scopeRect.size(), P75*VectorscopeGenerator::scaling*YUV_Cy);
 160     pMg75 = m_vectorscopeGenerator->mapToCircle(scopeRect.size(), P75*VectorscopeGenerator::scaling*YUV_Mg);
 161     pYl75 = m_vectorscopeGenerator->mapToCircle(scopeRect.size(), P75*VectorscopeGenerator::scaling*YUV_Yl);
 162
 163     return scopeRect;
 164 }
 165
 166 bool Vectorscope::isHUDDependingOnInput() const { return false; }
 167 bool Vectorscope::isScopeDependingOnInput() const { return true; }
 168 bool Vectorscope::isBackgroundDependingOnInput() const { return false; }
 169
 170 QImage Vectorscope::renderHUD(uint)
 171 {
 172
 173     QImage hud;
 174
 175     if (m_circleEnabled) {
 176         // Mouse moved: Draw a circle over the scope
 177
 178         hud = QImage(m_scopeRect.size(), QImage::Format_ARGB32);
 179         hud.fill(qRgba(0, 0, 0, 0));
 180
 181         QPainter davinci(&hud);
 182         QPoint widgetCenterPoint = m_scopeRect.topLeft() + m_centerPoint;
 183
 184         int dx = -widgetCenterPoint.x()+m_mousePos.x();
 185         int dy =  widgetCenterPoint.y()-m_mousePos.y();
 186
 187         QPoint reference = m_vectorscopeGenerator->mapToCircle(m_scopeRect.size(), QPointF(1,0));
 188
 189         float r = sqrt(dx*dx + dy*dy);
 190         float percent = (float) 100*r/VectorscopeGenerator::scaling/m_gain/(reference.x() - widgetCenterPoint.x());
 191
 192         switch (ui->backgroundMode->itemData(ui->backgroundMode->currentIndex()).toInt()) {
 193         case BG_NONE:
 194             davinci.setPen(penLight);
 195             break;
 196         default:
 197             if (r > cw/2) {
 198                 davinci.setPen(penLight);
 199             } else {
 200                 davinci.setPen(penDark);
 201             }
 202             break;
 203         }
 204         davinci.drawEllipse(m_centerPoint, (int)r, (int)r);
 205         davinci.setPen(penThin);
 206         davinci.drawText(QPoint(m_scopeRect.width()-40, m_scopeRect.height()), i18n("%1 \%", QString::number(percent, 'f', 0)));
 207
 208         float angle = copysign(acos(dx/r)*180/M_PI, dy);
 209         davinci.drawText(QPoint(10, m_scopeRect.height()), i18n("%1°", QString::number(angle, 'f', 1)));
 210
 211         m_circleEnabled = false;
 212     } else {
 213         hud = QImage(0, 0, QImage::Format_ARGB32);
 214     }
 215     emit signalHUDRenderingFinished(0, 1);
 216     return hud;
 217 }
 218
 219 QImage Vectorscope::renderScope(uint accelerationFactor, QImage qimage)
 220 {
 221     QTime start = QTime::currentTime();
 222     QImage scope;
 223
 224     if (cw <= 0) {
 225         qDebug() << "Scope size not known yet. Aborting.";
 226     } else {
 227
 228         scope = m_vectorscopeGenerator->calculateVectorscope(m_scopeRect.size(),
 229                                                              qimage,
 230                                                              m_gain, (VectorscopeGenerator::PaintMode) ui->paintMode->itemData(ui->paintMode->currentIndex()).toInt(),
 231                                                              m_aAxisEnabled->isChecked(), accelerationFactor);
 232
 233     }
 234
 235     unsigned int mseconds = start.msecsTo(QTime::currentTime());
 236     emit signalScopeRenderingFinished(mseconds, accelerationFactor);
 237     return scope;
 238 }
 239
 240 QImage Vectorscope::renderBackground(uint)
 241 {
 242     QTime start = QTime::currentTime();
 243     start.start();
 244
 245     QImage bg;
 246     switch (ui->backgroundMode->itemData(ui->backgroundMode->currentIndex()).toInt()) {
 247     case BG_YUV:
 248         qDebug() << "YUV background.";
 249         bg = m_colorTools->yuvColorWheel(m_scopeRect.size(), (unsigned char) 128, 1/VectorscopeGenerator::scaling, false, true);
 250         break;
 251     case BG_CHROMA:
 252         bg = m_colorTools->yuvColorWheel(m_scopeRect.size(), (unsigned char) 255, 1/VectorscopeGenerator::scaling, true, true);
 253         break;
 254     default:
 255         qDebug() << "No background.";
 256         bg = QImage(cw, cw, QImage::Format_ARGB32);
 257         bg.fill(qRgba(0,0,0,0));
 258         break;
 259     }
 260
 261
 262     // Draw the vectorscope circle
 263     QPainter davinci(&bg);
 264     QPoint vinciPoint;
 265
 266
 267     davinci.setRenderHint(QPainter::Antialiasing, true);
 268
 269     davinci.setPen(penThick);
 270     davinci.drawEllipse(0, 0, cw, cw);
 271
 272     // Draw RGB/CMY points with 100% chroma
 273     vinciPoint = m_vectorscopeGenerator->mapToCircle(m_scopeRect.size(), VectorscopeGenerator::scaling*YUV_R);
 274     davinci.drawEllipse(vinciPoint, 4,4);
 275     davinci.drawText(vinciPoint-QPoint(20, -10), "R");
 276
 277     vinciPoint = m_vectorscopeGenerator->mapToCircle(m_scopeRect.size(), VectorscopeGenerator::scaling*YUV_G);
 278     davinci.drawEllipse(vinciPoint, 4,4);
 279     davinci.drawText(vinciPoint-QPoint(20, 0), "G");
 280
 281     vinciPoint = m_vectorscopeGenerator->mapToCircle(m_scopeRect.size(), VectorscopeGenerator::scaling*YUV_B);
 282     davinci.drawEllipse(vinciPoint, 4,4);
 283     davinci.drawText(vinciPoint+QPoint(15, 10), "B");
 284
 285     vinciPoint = m_vectorscopeGenerator->mapToCircle(m_scopeRect.size(), VectorscopeGenerator::scaling*YUV_Cy);
 286     davinci.drawEllipse(vinciPoint, 4,4);
 287     davinci.drawText(vinciPoint+QPoint(15, -5), "Cy");
 288
 289     vinciPoint = m_vectorscopeGenerator->mapToCircle(m_scopeRect.size(), VectorscopeGenerator::scaling*YUV_Mg);
 290     davinci.drawEllipse(vinciPoint, 4,4);
 291     davinci.drawText(vinciPoint+QPoint(15, 10), "Mg");
 292
 293     vinciPoint = m_vectorscopeGenerator->mapToCircle(m_scopeRect.size(), VectorscopeGenerator::scaling*YUV_Yl);
 294     davinci.drawEllipse(vinciPoint, 4,4);
 295     davinci.drawText(vinciPoint-QPoint(25, 0), "Yl");
 296
 297     switch (ui->backgroundMode->itemData(ui->backgroundMode->currentIndex()).toInt()) {
 298     case BG_NONE:
 299         davinci.setPen(penLight);
 300         break;
 301     default:
 302         davinci.setPen(penDark);
 303         break;
 304     }
 305
 306     // Draw axis
 307     if (m_aAxisEnabled->isChecked()) {
 308         davinci.drawLine(m_vectorscopeGenerator->mapToCircle(m_scopeRect.size(), QPointF(0,-.9)), m_vectorscopeGenerator->mapToCircle(m_scopeRect.size(), QPointF(0,.9)));
 309         davinci.drawLine(m_vectorscopeGenerator->mapToCircle(m_scopeRect.size(), QPointF(-.9,0)), m_vectorscopeGenerator->mapToCircle(m_scopeRect.size(), QPointF(.9,0)));
 310     }
 311
 312     // Draw center point
 313     switch (ui->backgroundMode->itemData(ui->backgroundMode->currentIndex()).toInt()) {
 314     case BG_CHROMA:
 315         davinci.setPen(penDark);
 316         break;
 317     default:
 318         davinci.setPen(penThin);
 319         break;
 320     }
 321     davinci.drawEllipse(m_centerPoint, 5,5);
 322
 323
 324     // Draw 75% box
 325     if (m_a75PBox->isChecked()) {
 326         davinci.drawLine(pR75, pYl75);
 327         davinci.drawLine(pYl75, pG75);
 328         davinci.drawLine(pG75, pCy75);
 329         davinci.drawLine(pCy75, pB75);
 330         davinci.drawLine(pB75, pMg75);
 331         davinci.drawLine(pMg75, pR75);
 332     }
 333
 334     // Draw RGB/CMY points with 75% chroma (for NTSC)
 335     davinci.setPen(penThin);
 336     davinci.drawEllipse(pR75, 3,3);
 337     davinci.drawEllipse(pG75, 3,3);
 338     davinci.drawEllipse(pB75, 3,3);
 339     davinci.drawEllipse(pCy75, 3,3);
 340     davinci.drawEllipse(pMg75, 3,3);
 341     davinci.drawEllipse(pYl75, 3,3);
 342
 343     // Draw realtime factor (number of skipped pixels)
 344     if (m_aRealtime->isChecked()) {
 345         davinci.setPen(penThin);
 346         davinci.drawText(QPoint(m_scopeRect.width()-40, m_scopeRect.height()-15), QVariant(m_accelFactorScope).toString().append("x"));
 347     }
 348
 349     emit signalBackgroundRenderingFinished(start.elapsed(), 1);
 350     return bg;
 351 }
 352
 353
 354
 355
 356 ///// Slots /////
 357
 358 void Vectorscope::slotGainChanged(int newval)
 359 {
 360     m_gain = 1 + (float)newval/10;
 361     ui->lblGain->setText(QString::number(m_gain, 'f', 1) + "x");
 362     forceUpdateScope();
 363 }
 364
 365 void Vectorscope::slotExportBackground()
 366 {
 367     qDebug() << "Exporting background";
 368     m_colorPlaneExport->show();
 369
 370 }
 371
 372 void Vectorscope::slotBackgroundChanged()
 373 {
 374     // Background changed, switch to a suitable color mode now
 375     int index;
 376     switch (ui->backgroundMode->itemData(ui->backgroundMode->currentIndex()).toInt()) {
 377     case BG_YUV:
 378         index = ui->paintMode->findData(QVariant(VectorscopeGenerator::PaintMode_Black));
 379         if (index >= 0) {
 380             ui->paintMode->setCurrentIndex(index);
 381         }
 382         break;
 383
 384     case BG_NONE:
 385         if (ui->paintMode->itemData(ui->paintMode->currentIndex()).toInt() == VectorscopeGenerator::PaintMode_Black) {
 386             index = ui->paintMode->findData(QVariant(VectorscopeGenerator::PaintMode_Green2));
 387             ui->paintMode->setCurrentIndex(index);
 388         }
 389         break;
 390     }
 391     forceUpdateBackground();
 392 }
 393
 394
 395
 396 ///// Events /////
 397
 398 void Vectorscope::mouseMoveEvent(QMouseEvent *event)
 399 {
 400     // Draw a circle around the center,
 401     // showing percentage number of the radius length
 402
 403     m_circleEnabled = true;
 404     m_mousePos = event->pos();
 405     forceUpdateHUD();
 406 }
 407
 408 void Vectorscope::leaveEvent(QEvent *event)
 409 {
 410     // Repaint the HUD without the circle
 411
 412     m_circleEnabled = false;
 413     QWidget::leaveEvent(event);
 414     forceUpdateHUD();
 415 }