1 /***************************************************************************
2 * Copyright (C) 2010 by Simon Andreas Eugster (simon.eu@gmail.com) *
3 * This file is part of kdenlive. See www.kdenlive.org. *
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 ***************************************************************************/
11 #include "qtconcurrentrun.h"
13 #include "abstractscopewidget.h"
23 const int REALTIME_FPS = 30;
25 const QColor light(250, 238, 226, 255);
26 const QColor dark ( 40, 40, 39, 255);
27 const QColor dark2( 25, 25, 23, 255);
29 AbstractScopeWidget::AbstractScopeWidget(Monitor *projMonitor, Monitor *clipMonitor, QWidget *parent) :
31 m_projMonitor(projMonitor),
32 m_clipMonitor(clipMonitor),
35 m_accelFactorScope(1),
36 m_accelFactorBackground(1),
39 m_semaphoreBackground(1),
40 initialDimensionUpdateDone(false)
43 m_scopePalette = QPalette();
44 m_scopePalette.setBrush(QPalette::Window, QBrush(dark2));
45 m_scopePalette.setBrush(QPalette::Base, QBrush(dark));
46 m_scopePalette.setBrush(QPalette::Button, QBrush(dark));
47 m_scopePalette.setBrush(QPalette::Text, QBrush(light));
48 m_scopePalette.setBrush(QPalette::WindowText, QBrush(light));
49 m_scopePalette.setBrush(QPalette::ButtonText, QBrush(light));
50 this->setPalette(m_scopePalette);
51 this->setAutoFillBackground(true);
53 m_aAutoRefresh = new QAction(i18n("Auto Refresh"), this);
54 m_aAutoRefresh->setCheckable(true);
55 m_aRealtime = new QAction(i18n("Realtime (with precision loss)"), this);
56 m_aRealtime->setCheckable(true);
58 m_menu = new QMenu(this);
59 m_menu->setPalette(m_scopePalette);
60 m_menu->addAction(m_aAutoRefresh);
61 m_menu->addAction(m_aRealtime);
63 this->setContextMenuPolicy(Qt::CustomContextMenu);
65 m_activeRender = (m_clipMonitor->isActive()) ? m_clipMonitor->render : m_projMonitor->render;
68 b &= connect(this, SIGNAL(customContextMenuRequested(QPoint)), this, SLOT(customContextMenuRequested(QPoint)));
70 b &= connect(m_activeRender, SIGNAL(rendererPosition(int)), this, SLOT(slotRenderZoneUpdated()));
71 b &= connect(m_activeRender, SIGNAL(frameUpdated(QImage)), this, SLOT(slotRenderZoneUpdated(QImage)));
73 b &= connect(this, SIGNAL(signalHUDRenderingFinished(uint,uint)), this, SLOT(slotHUDRenderingFinished(uint,uint)));
74 b &= connect(this, SIGNAL(signalScopeRenderingFinished(uint,uint)), this, SLOT(slotScopeRenderingFinished(uint,uint)));
75 b &= connect(this, SIGNAL(signalBackgroundRenderingFinished(uint,uint)), this, SLOT(slotBackgroundRenderingFinished(uint,uint)));
76 b &= connect(m_aRealtime, SIGNAL(toggled(bool)), this, SLOT(slotResetRealtimeFactor(bool)));
77 b &= connect(m_aAutoRefresh, SIGNAL(toggled(bool)), this, SLOT(slotAutoRefreshToggled(bool)));
81 AbstractScopeWidget::~AbstractScopeWidget()
86 delete m_aAutoRefresh;
90 void AbstractScopeWidget::init()
92 m_widgetName = widgetName();
96 void AbstractScopeWidget::readConfig()
98 KSharedConfigPtr config = KGlobal::config();
99 KConfigGroup scopeConfig(config, configName());
100 m_aAutoRefresh->setChecked(scopeConfig.readEntry("autoRefresh", true));
101 m_aRealtime->setChecked(scopeConfig.readEntry("realtime", false));
105 void AbstractScopeWidget::writeConfig()
107 KSharedConfigPtr config = KGlobal::config();
108 KConfigGroup scopeConfig(config, configName());
109 scopeConfig.writeEntry("autoRefresh", m_aAutoRefresh->isChecked());
110 scopeConfig.writeEntry("realtime", m_aRealtime->isChecked());
114 QString AbstractScopeWidget::configName() { return "Scope_" + m_widgetName; }
116 void AbstractScopeWidget::prodHUDThread()
118 if (this->visibleRegion().isEmpty()) {
119 qDebug() << "Scope " << m_widgetName << " is not visible. Not calculating HUD.";
121 if (m_semaphoreHUD.tryAcquire(1)) {
122 Q_ASSERT(!m_threadHUD.isRunning());
124 m_newHUDFrames.fetchAndStoreRelaxed(0);
125 m_newHUDUpdates.fetchAndStoreRelaxed(0);
126 m_threadHUD = QtConcurrent::run(this, &AbstractScopeWidget::renderHUD, m_accelFactorHUD);
127 qDebug() << "HUD thread started in " << m_widgetName;
130 qDebug() << "HUD semaphore locked, not prodding in " << m_widgetName << ". Thread running: " << m_threadHUD.isRunning();
135 void AbstractScopeWidget::prodScopeThread()
137 // Only start a new thread if the scope is actually visible
138 // and not hidden by another widget on the stack.
139 if (this->visibleRegion().isEmpty()) {
140 qDebug() << "Scope " << m_widgetName << " is not visible. Not calculating scope.";
142 // Try to acquire the semaphore. This must only succeed if m_threadScope is not running
143 // anymore. Therefore the semaphore must NOT be released before m_threadScope ends.
144 // If acquiring the semaphore fails, the thread is still running.
145 if (m_semaphoreScope.tryAcquire(1)) {
146 Q_ASSERT(!m_threadScope.isRunning());
148 m_newScopeFrames.fetchAndStoreRelaxed(0);
149 m_newScopeUpdates.fetchAndStoreRelaxed(0);
151 Q_ASSERT(m_accelFactorScope > 0);
153 // See http://doc.qt.nokia.com/latest/qtconcurrentrun.html#run about
154 // running member functions in a thread
155 m_threadScope = QtConcurrent::run(this, &AbstractScopeWidget::renderScope, m_accelFactorScope, m_scopeImage);
157 qDebug() << "Scope thread started in " << m_widgetName;
160 qDebug() << "Scope semaphore locked, not prodding in " << m_widgetName << ". Thread running: " << m_threadScope.isRunning();
164 void AbstractScopeWidget::prodBackgroundThread()
166 if (this->visibleRegion().isEmpty()) {
167 qDebug() << "Scope " << m_widgetName << " is not visible. Not calculating background.";
169 if (m_semaphoreBackground.tryAcquire(1)) {
170 Q_ASSERT(!m_threadBackground.isRunning());
172 m_newBackgroundFrames.fetchAndStoreRelaxed(0);
173 m_newBackgroundUpdates.fetchAndStoreRelaxed(0);
174 m_threadBackground = QtConcurrent::run(this, &AbstractScopeWidget::renderBackground, m_accelFactorBackground);
175 qDebug() << "Background thread started in " << m_widgetName;
178 qDebug() << "Background semaphore locked, not prodding in " << m_widgetName << ". Thread running: " << m_threadBackground.isRunning();
183 void AbstractScopeWidget::forceUpdate()
185 m_newHUDUpdates.fetchAndAddRelaxed(1);
186 m_newScopeUpdates.fetchAndAddRelaxed(1);
187 m_newBackgroundUpdates.fetchAndAddRelaxed(1);
190 prodBackgroundThread();
192 void AbstractScopeWidget::forceUpdateHUD()
194 m_newHUDUpdates.fetchAndAddRelaxed(1);
198 void AbstractScopeWidget::forceUpdateScope()
200 m_newScopeUpdates.fetchAndAddRelaxed(1);
204 void AbstractScopeWidget::forceUpdateBackground()
206 m_newBackgroundUpdates.fetchAndAddRelaxed(1);
207 prodBackgroundThread();
214 void AbstractScopeWidget::mouseReleaseEvent(QMouseEvent *event)
218 prodBackgroundThread();
219 QWidget::mouseReleaseEvent(event);
222 void AbstractScopeWidget::resizeEvent(QResizeEvent *event)
224 // Update the dimension of the available rect for painting
225 m_scopeRect = scopeRect();
229 QWidget::resizeEvent(event);
232 void AbstractScopeWidget::raise()
234 // Widget has been brought to the top of a widget stack,
235 // layers need to be updated.
240 void AbstractScopeWidget::showEvent(QShowEvent *event)
242 m_scopeRect = scopeRect();
243 QWidget::showEvent(event);
244 m_scopeRect = scopeRect();
247 void AbstractScopeWidget::paintEvent(QPaintEvent *)
249 QPainter davinci(this);
250 davinci.drawImage(m_scopeRect.topLeft(), m_imgBackground);
251 davinci.drawImage(m_scopeRect.topLeft(), m_imgScope);
252 davinci.drawImage(m_scopeRect.topLeft(), m_imgHUD);
255 void AbstractScopeWidget::customContextMenuRequested(const QPoint &pos)
257 m_menu->exec(this->mapToGlobal(pos));
260 uint AbstractScopeWidget::calculateAccelFactorHUD(uint oldMseconds, uint) { return ceil((float)oldMseconds*REALTIME_FPS/1000 ); }
261 uint AbstractScopeWidget::calculateAccelFactorScope(uint oldMseconds, uint) { return ceil((float)oldMseconds*REALTIME_FPS/1000 ); }
262 uint AbstractScopeWidget::calculateAccelFactorBackground(uint oldMseconds, uint) { return ceil((float)oldMseconds*REALTIME_FPS/1000 ); }
267 void AbstractScopeWidget::slotHUDRenderingFinished(uint mseconds, uint oldFactor)
269 qDebug() << "HUD rendering has finished, waiting for termination in " << m_widgetName;
270 m_threadHUD.waitForFinished();
271 m_imgHUD = m_threadHUD.result();
273 m_semaphoreHUD.release(1);
277 if (m_aRealtime->isChecked()) {
278 accel = calculateAccelFactorHUD(mseconds, oldFactor);
279 if (m_accelFactorHUD < 1) {
282 m_accelFactorHUD = accel;
285 if ( (m_newHUDFrames > 0 && m_aAutoRefresh->isChecked()) || m_newHUDUpdates > 0) {
286 qDebug() << "Trying to start a new HUD thread for " << m_widgetName
287 << ". New frames/updates: " << m_newHUDFrames << "/" << m_newHUDUpdates;
292 void AbstractScopeWidget::slotScopeRenderingFinished(uint mseconds, uint oldFactor)
294 // The signal can be received before the thread has really finished. So we
295 // need to wait until it has really finished before starting a new thread.
296 qDebug() << "Scope rendering has finished, waiting for termination in " << m_widgetName;
297 m_threadScope.waitForFinished();
298 m_imgScope = m_threadScope.result();
300 // The scope thread has finished. Now we can release the semaphore, allowing a new thread.
301 // See prodScopeThread where the semaphore is acquired again.
302 m_semaphoreScope.release(1);
305 // Calculate the acceleration factor hint to get «realtime» updates.
307 if (m_aRealtime->isChecked()) {
308 accel = calculateAccelFactorScope(mseconds, oldFactor);
310 // If mseconds happens to be 0.
313 // Don't directly calculate with m_accelFactorScope as we are dealing with concurrency.
314 // If m_accelFactorScope is set to 0 at the wrong moment, who knows what might happen
315 // then :) Therefore use a local variable.
316 m_accelFactorScope = accel;
319 if ( (m_newScopeFrames > 0 && m_aAutoRefresh->isChecked()) || m_newScopeUpdates > 0) {
320 qDebug() << "Trying to start a new scope thread for " << m_widgetName
321 << ". New frames/updates: " << m_newScopeFrames << "/" << m_newScopeUpdates;
326 void AbstractScopeWidget::slotBackgroundRenderingFinished(uint mseconds, uint oldFactor)
328 qDebug() << "Background rendering has finished, waiting for termination in " << m_widgetName;
329 m_threadBackground.waitForFinished();
330 m_imgBackground = m_threadBackground.result();
332 m_semaphoreBackground.release(1);
336 if (m_aRealtime->isChecked()) {
337 accel = calculateAccelFactorBackground(mseconds, oldFactor);
338 if (m_accelFactorBackground < 1) {
341 m_accelFactorBackground = accel;
344 if ( (m_newBackgroundFrames > 0 && m_aAutoRefresh->isChecked()) || m_newBackgroundUpdates > 0) {
345 qDebug() << "Trying to start a new background thread for " << m_widgetName
346 << ". New frames/updates: " << m_newBackgroundFrames << "/" << m_newBackgroundUpdates;
347 prodBackgroundThread();;
351 void AbstractScopeWidget::slotActiveMonitorChanged(bool isClipMonitor)
353 qDebug() << "Active monitor has changed in " << m_widgetName << ". Is the clip monitor active now? " << isClipMonitor;
355 bool b = m_activeRender->disconnect(this);
358 m_activeRender = (isClipMonitor) ? m_clipMonitor->render : m_projMonitor->render;
360 b &= connect(m_activeRender, SIGNAL(rendererPosition(int)), this, SLOT(slotRenderZoneUpdated()));
361 b &= connect(m_activeRender, SIGNAL(frameUpdated(QImage)), this, SLOT(slotRenderZoneUpdated(QImage)));
364 // Update the scope for the new monitor.
367 prodBackgroundThread();
370 void AbstractScopeWidget::slotRenderZoneUpdated()
372 m_newHUDFrames.fetchAndAddRelaxed(1);
373 m_newScopeFrames.fetchAndAddRelaxed(1);
374 m_newBackgroundFrames.fetchAndAddRelaxed(1);
376 qDebug() << "Monitor incoming. New frames total HUD/Scope/Background: " << m_newHUDFrames
377 << "/" << m_newScopeFrames << "/" << m_newBackgroundFrames;
379 if (this->visibleRegion().isEmpty()) {
380 qDebug() << "Scope of widget " << m_widgetName << " is not at the top, not rendering.";
382 if (m_aAutoRefresh->isChecked()) {
385 prodBackgroundThread();
390 void AbstractScopeWidget::slotRenderZoneUpdated(QImage frame)
392 m_scopeImage = frame;
393 slotRenderZoneUpdated();
396 void AbstractScopeWidget::slotResetRealtimeFactor(bool realtimeChecked)
398 if (!realtimeChecked) {
399 m_accelFactorHUD = 1;
400 m_accelFactorScope = 1;
401 m_accelFactorBackground = 1;
405 void AbstractScopeWidget::slotAutoRefreshToggled(bool autoRefresh)
407 // TODO only if depends on input