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/****************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt 3D Studio.
**
** $QT_BEGIN_LICENSE:GPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) any later version
** approved by the KDE Free Qt Foundation. The licenses are as published by
** the Free Software Foundation and appearing in the file LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "q3dsimagesequencegeneratorthread_p.h"
#include "q3dssurfaceviewer.h"
#include "q3dspresentation.h"
#include "q3dsviewersettings.h"
#include <QtGui/qopenglcontext.h>
#include <QtGui/qopenglfunctions.h>
#include <QtGui/qoffscreensurface.h>
#include <QtGui/qopenglframebufferobject.h>
#include <QtCore/qfileinfo.h>
#include <QtCore/qdir.h>
#include <QtCore/qdebug.h>
#include <QtCore/qmath.h>
bool Q3DSImageSequenceGeneratorThread::initialize(
const QString &presentation, qreal start, qreal end, qreal fps, qreal frameInterval,
int width, int height, const QString &outPath, const QString &outFile)
{
QFileInfo fileInfo(presentation);
if (!fileInfo.exists()) {
QString error = QObject::tr("File not found: '%1'").arg(presentation);
qWarning() << "Generating image sequence failed -" << error;
Q_EMIT generationFinished(false, error);
return false;
}
m_outputFileName = QStringLiteral("%2/%1_%3.png");
if (outFile.isEmpty()) {
m_outputFileName = m_outputFileName.arg(fileInfo.baseName())
.arg(outPath).arg(QStringLiteral("%1"));
} else {
m_outputFileName = m_outputFileName.arg(outFile).arg(outPath).arg(QStringLiteral("%1"));
}
m_sourceUrl = QUrl::fromLocalFile(fileInfo.absoluteFilePath());
QSurfaceFormat format;
format.setDepthBufferSize(24);
format.setStencilBufferSize(8);
m_context = new QOpenGLContext;
m_context->setFormat(format);
if (!m_context->create()) {
QString error = QObject::tr("Failed to create context");
qWarning() << "Generating image sequence failed -" << error;
Q_EMIT generationFinished(false, error);
return false;
}
m_surface = new QOffscreenSurface;
m_surface->setFormat(m_context->format());
m_surface->create();
m_mainThread = QThread::currentThread();
m_surface->moveToThread(this);
m_context->moveToThread(this);
m_start = start;
m_end = end;
m_fps = fps;
m_frameInterval = frameInterval;
m_width = width;
m_height = height;
return true;
}
Q3DSImageSequenceGeneratorThread::Q3DSImageSequenceGeneratorThread()
: m_start(0)
, m_end(10000)
, m_fps(60)
, m_frameInterval(16.666667)
, m_width(1920)
, m_height(1080)
, m_surface(nullptr)
, m_context(nullptr)
{
}
Q3DSImageSequenceGeneratorThread::~Q3DSImageSequenceGeneratorThread() {
delete m_context;
delete m_surface;
}
void Q3DSImageSequenceGeneratorThread::run() {
if (!m_context->makeCurrent(m_surface)) {
QString error = QObject::tr("Couldn't make context current.");
qWarning() << "Generating image sequence failed -" << error;
Q_EMIT generationFinished(false, error);
cleanup();
return;
}
const QSize size(m_width, m_height);
QOpenGLFramebufferObject fbo(size, QOpenGLFramebufferObject::CombinedDepthStencil);
Q3DSSurfaceViewer viewer;
viewer.presentation()->setSource(m_sourceUrl);
viewer.settings()->setScaleMode(Q3DSViewerSettings::ScaleModeFill);
viewer.setUpdateInterval(-1);
viewer.setAutoSize(false);
viewer.setSize(size);
if (!viewer.create(m_surface, m_context, fbo.handle())) {
QString error = QObject::tr("Viewer initialization failed.");
qWarning() << "Generating image sequence failed -" << error;
Q_EMIT generationFinished(false, error);
cleanup();
return;
}
if (m_frameInterval <= 0)
m_frameInterval = 1000.0 / m_fps;
// Presentations always assume you want to start animating at time zero and set a local
// offset to global time when they render the first frame. This means we need to always
// render a frame at global time zero first.
if (qRound(m_start) != 0) {
viewer.presentation()->setGlobalAnimationTime(0);
viewer.update();
}
// Add a bit of time to the end time to ensure we don't lose the last frame to rounding errors
m_end += m_frameInterval / 10000.0;
// Ensure directory exists
QFileInfo fi(m_outputFileName);
QDir dir = fi.absoluteDir();
dir.mkpath(".");
int frameCount = 0;
int totalFrames = qCeil((m_end - m_start) / m_frameInterval);
for (qreal t = m_start; t <= m_end; t += m_frameInterval) {
++frameCount;
viewer.presentation()->setGlobalAnimationTime(qRound64(t));
viewer.update();
if (!fbo.toImage().save(m_outputFileName.arg(frameCount))) {
QString error = QObject::tr("Failed to write output file: '%1'")
.arg(m_outputFileName.arg(frameCount));
qWarning() << "Generating image sequence failed -" << error;
Q_EMIT generationFinished(false, error);
cleanup();
return;
}
Q_EMIT progress(totalFrames, frameCount);
}
Q_EMIT generationFinished(true, m_outputFileName.arg("*"));
cleanup();
}
void Q3DSImageSequenceGeneratorThread::cleanup()
{
m_context->doneCurrent();
delete m_context;
m_context = nullptr;
// Surface needs to be deleted in the thread it was created in
m_surface->moveToThread(m_mainThread);
deleteLater();
}
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