Integrate QAbstractVideoSurface API.

This introduces a QAbstractVideoSurface interface for implementing arbitrary
video outputs, and a QVideoFrame type.  Also included is the
QVideoSurfaceFormat class which is used to configure the input to a video
surface, and the QAbstractVideoBuffer class which allows QVideoFrames
to be constructed from non-native frame types.

Reviewed-by: Dmytro Poplavskiy

15 files changed, 1371 insertions, 0 deletions

diff --git a/examples/video/video.pro b/examples/video/video.pro
new file mode 100644
index 0000000..f0b63b6
--- /dev/null
+++ b/examples/video/video.pro
@@ -0,0 +1,6 @@
+TEMPLATE = subdirs
+
+SUBDIRS += \
+    videographicsitem \
+    videowidget
+
diff --git a/examples/video/videographicsitem/main.cpp b/examples/video/videographicsitem/main.cpp
new file mode 100644
index 0000000..b80ac47
--- /dev/null
+++ b/examples/video/videographicsitem/main.cpp
@@ -0,0 +1,55 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://qt.nokia.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "videoplayer.h"
+
+#include <QtGui/QApplication>
+
+int main(int argc, char **argv)
+{
+    QApplication app(argc, argv);
+
+    VideoPlayer player;
+    player.show();
+
+    return app.exec(); 
+}
+
diff --git a/examples/video/videographicsitem/videographicsitem.pro b/examples/video/videographicsitem/videographicsitem.pro
new file mode 100644
index 0000000..7e0b4c5
--- /dev/null
+++ b/examples/video/videographicsitem/videographicsitem.pro
@@ -0,0 +1,16 @@
+QT += multimedia
+
+contains(QT_CONFIG, opengl): QT += opengl
+
+HEADERS   += videoplayer.h \
+             videoitem.h
+
+SOURCES   += main.cpp \
+             videoplayer.cpp \
+             videoitem.cpp
+
+# install
+target.path = $$[QT_INSTALL_EXAMPLES]/video/videographicsitem
+sources.files = $$SOURCES $$HEADERS $$FORMS $$RESOURCES *.pro *.png images
+sources.path = $$[QT_INSTALL_EXAMPLES]/video/videographicsitem
+INSTALLS += target sources
diff --git a/examples/video/videographicsitem/videoitem.cpp b/examples/video/videographicsitem/videoitem.cpp
new file mode 100644
index 0000000..6c17d6a
--- /dev/null
+++ b/examples/video/videographicsitem/videoitem.cpp
@@ -0,0 +1,144 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://qt.nokia.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "videoitem.h"
+
+#include <QtMultimedia>
+
+VideoItem::VideoItem(QGraphicsItem *parent)
+    : QGraphicsItem(parent)
+    , imageFormat(QImage::Format_Invalid)
+    , framePainted(false)
+{
+}
+
+VideoItem::~VideoItem()
+{
+}
+
+QRectF VideoItem::boundingRect() const
+{
+    return QRectF(QPointF(0,0), surfaceFormat().sizeHint());
+}
+
+void VideoItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
+{
+    Q_UNUSED(option);
+    Q_UNUSED(widget);
+
+    if (currentFrame.map(QAbstractVideoBuffer::ReadOnly)) {
+        const QTransform oldTransform = painter->transform();
+
+        if (surfaceFormat().scanLineDirection() == QVideoSurfaceFormat::BottomToTop) {
+           painter->scale(1, -1);
+           painter->translate(0, -boundingRect().height());
+        }
+
+        painter->drawImage(boundingRect(), QImage(
+                currentFrame.bits(),
+                imageSize.width(),
+                imageSize.height(),
+                imageFormat));
+
+        painter->setTransform(oldTransform);
+
+        framePainted = true;
+
+        currentFrame.unmap();
+    }
+}
+
+QList<QVideoFrame::PixelFormat> VideoItem::supportedPixelFormats(
+        QAbstractVideoBuffer::HandleType handleType) const
+{
+    if (handleType == QAbstractVideoBuffer::NoHandle) {
+        return QList<QVideoFrame::PixelFormat>()
+                << QVideoFrame::Format_RGB32
+                << QVideoFrame::Format_ARGB32
+                << QVideoFrame::Format_ARGB32_Premultiplied
+                << QVideoFrame::Format_RGB565
+                << QVideoFrame::Format_RGB555;
+    } else {
+        return QList<QVideoFrame::PixelFormat>();
+    }
+}
+
+bool VideoItem::start(const QVideoSurfaceFormat &format)
+{
+    if (isFormatSupported(format)) {
+        imageFormat = QVideoFrame::equivalentImageFormat(format.pixelFormat());
+        imageSize = format.frameSize();
+        framePainted = true;
+
+        QAbstractVideoSurface::start(format);
+
+        prepareGeometryChange();
+
+        return true;
+    } else {
+        return false;
+    }
+}
+
+void VideoItem::stop()
+{
+    currentFrame = QVideoFrame();
+    framePainted = false;
+
+    QAbstractVideoSurface::stop();
+}
+
+bool VideoItem::present(const QVideoFrame &frame)
+{
+    if (!framePainted) {
+        if (!isStarted())
+            setError(StoppedError);
+
+        return false;
+    } else {
+        currentFrame = frame;
+        framePainted = false;
+
+        update();
+
+        return true;
+    }
+}
diff --git a/examples/video/videographicsitem/videoitem.h b/examples/video/videographicsitem/videoitem.h
new file mode 100644
index 0000000..868cd54
--- /dev/null
+++ b/examples/video/videographicsitem/videoitem.h
@@ -0,0 +1,78 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://qt.nokia.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef VIDEOITEM_H
+#define VIDEOITEM_H
+
+#include <QtMultimedia/QAbstractVideoSurface>
+#include <QtGui/QGraphicsItem>
+
+class VideoItem
+    : public QAbstractVideoSurface,
+      public QGraphicsItem
+{
+    Q_OBJECT
+public:
+    explicit VideoItem(QGraphicsItem *parentItem = 0);
+    ~VideoItem();
+
+    QRectF boundingRect() const;
+    void paint(
+        QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = 0);
+
+    //video surface
+    QList<QVideoFrame::PixelFormat> supportedPixelFormats(
+            QAbstractVideoBuffer::HandleType handleType = QAbstractVideoBuffer::NoHandle) const;
+
+    bool start(const QVideoSurfaceFormat &format);
+    void stop();
+    bool present(const QVideoFrame &frame);
+
+private:
+    QImage::Format imageFormat;
+    QSize imageSize;
+
+    QVideoFrame currentFrame;
+    bool framePainted;
+};
+
+#endif
+
diff --git a/examples/video/videographicsitem/videoplayer.cpp b/examples/video/videographicsitem/videoplayer.cpp
new file mode 100644
index 0000000..85a5527
--- /dev/null
+++ b/examples/video/videographicsitem/videoplayer.cpp
@@ -0,0 +1,210 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://qt.nokia.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "videoplayer.h"
+#include "videoitem.h"
+
+#include <QtMultimedia>
+
+#ifndef QT_NO_OPENGL
+# include <QtOpenGL/QGLWidget>
+#endif
+
+VideoPlayer::VideoPlayer(QWidget *parent, Qt::WindowFlags flags)
+    : QWidget(parent, flags)
+    , videoItem(0)
+    , playButton(0)
+    , positionSlider(0)
+{
+    connect(&movie, SIGNAL(stateChanged(QMovie::MovieState)),
+            this, SLOT(movieStateChanged(QMovie::MovieState)));
+    connect(&movie, SIGNAL(frameChanged(int)),
+            this, SLOT(frameChanged(int)));
+
+    videoItem = new VideoItem;
+
+    QGraphicsScene *scene = new QGraphicsScene(this);
+    QGraphicsView *graphicsView = new QGraphicsView(scene);
+
+#ifndef QT_NO_OPENGL
+    graphicsView->setViewport(new QGLWidget);
+#endif
+
+    scene->addItem(videoItem);
+
+    QSlider *rotateSlider = new QSlider(Qt::Horizontal);
+    rotateSlider->setRange(-180,  180);
+    rotateSlider->setValue(0);
+
+    connect(rotateSlider, SIGNAL(valueChanged(int)),
+            this, SLOT(rotateVideo(int)));
+
+    QAbstractButton *openButton = new QPushButton(tr("Open..."));
+    connect(openButton, SIGNAL(clicked()), this, SLOT(openFile()));
+
+    playButton = new QPushButton;
+    playButton->setEnabled(false);
+    playButton->setIcon(style()->standardIcon(QStyle::SP_MediaPlay));
+
+    connect(playButton, SIGNAL(clicked()),
+            this, SLOT(play()));
+
+    positionSlider = new QSlider(Qt::Horizontal);
+    positionSlider->setRange(0, 0);
+
+    connect(positionSlider, SIGNAL(sliderMoved(int)),
+            this, SLOT(setPosition(int)));
+
+    connect(&movie, SIGNAL(frameChanged(int)),
+            positionSlider, SLOT(setValue(int)));
+
+    QBoxLayout *controlLayout = new QHBoxLayout;
+    controlLayout->setMargin(0);
+    controlLayout->addWidget(openButton);
+    controlLayout->addWidget(playButton);
+    controlLayout->addWidget(positionSlider);
+
+    QBoxLayout *layout = new QVBoxLayout;
+    layout->addWidget(graphicsView);
+    layout->addWidget(rotateSlider);
+    layout->addLayout(controlLayout);
+
+    setLayout(layout);
+}
+
+VideoPlayer::~VideoPlayer()
+{
+}
+
+void VideoPlayer::openFile()
+{
+    QString fileName = QFileDialog::getOpenFileName(this, tr("Open Movie"));
+
+    if (!fileName.isEmpty()) {
+        if (videoItem->isStarted())
+            videoItem->stop();
+
+        movie.setFileName(fileName);
+
+        playButton->setEnabled(true);
+        positionSlider->setMaximum(movie.frameCount());
+
+        movie.jumpToFrame(0);
+    }
+}
+
+void VideoPlayer::play()
+{
+    switch(movie.state()) {
+    case QMovie::NotRunning:
+        movie.start();
+        break;
+    case QMovie::Paused:
+        movie.setPaused(false);
+        break;
+    case QMovie::Running:
+        movie.setPaused(true);
+        break;
+    }
+}
+
+void VideoPlayer::movieStateChanged(QMovie::MovieState state)
+{
+    switch(state) {
+    case QMovie::NotRunning:
+    case QMovie::Paused:
+        playButton->setIcon(style()->standardIcon(QStyle::SP_MediaPlay));
+        break;
+    case QMovie::Running:
+        playButton->setIcon(style()->standardIcon(QStyle::SP_MediaPause));
+        break;
+    }
+}
+
+void VideoPlayer::frameChanged(int frame)
+{
+    if (!presentImage(movie.currentImage())) {
+        movie.stop();
+        playButton->setEnabled(false);
+        positionSlider->setMaximum(0);
+    } else {
+        positionSlider->setValue(frame);
+    }
+}
+
+void VideoPlayer::setPosition(int frame)
+{
+    movie.jumpToFrame(frame);
+}
+
+void VideoPlayer::rotateVideo(int angle)
+{
+    //rotate around the center of video element
+    qreal x = videoItem->boundingRect().width() / 2.0;
+    qreal y = videoItem->boundingRect().height() / 2.0;
+    videoItem->setTransform(QTransform().translate(x, y).rotate(angle).translate(-x, -y));
+}
+
+bool VideoPlayer::presentImage(const QImage &image)
+{
+    QVideoFrame frame(image);
+
+    if (!frame.isValid())
+        return false;
+
+    QVideoSurfaceFormat currentFormat = videoItem->surfaceFormat();
+
+    if (frame.pixelFormat() != currentFormat.pixelFormat()
+            || frame.size() != currentFormat.frameSize()) {
+        QVideoSurfaceFormat format(frame.size(), frame.pixelFormat());
+
+        if (!videoItem->start(format))
+            return false;
+    }
+
+    if (!videoItem->present(frame)) {
+        videoItem->stop();
+
+        return false;
+    } else {
+        return true;
+    }
+}
diff --git a/examples/video/videographicsitem/videoplayer.h b/examples/video/videographicsitem/videoplayer.h
new file mode 100644
index 0000000..246f727
--- /dev/null
+++ b/examples/video/videographicsitem/videoplayer.h
@@ -0,0 +1,86 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://qt.nokia.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef VIDEOPLAYER_H
+#define VIDEOPLAYER_H
+
+#include <QtGui/QMovie>
+#include <QtGui/QWidget>
+
+QT_BEGIN_NAMESPACE
+class QAbstractButton;
+class QAbstractVideoSurface;
+class QSlider;
+QT_END_NAMESPACE
+
+
+class VideoItem;
+
+class VideoPlayer : public QWidget
+{
+    Q_OBJECT
+public:
+    VideoPlayer(QWidget *parent = 0, Qt::WindowFlags flags = 0);
+    ~VideoPlayer();
+
+    QSize sizeHint() const { return QSize(800, 600); }
+
+public slots:
+    void openFile();
+    void play();
+
+private slots:
+    void movieStateChanged(QMovie::MovieState state);
+    void frameChanged(int frame);
+    void setPosition(int frame);
+    void rotateVideo(int angle);
+
+private:
+    bool presentImage(const QImage &image);
+
+    QMovie movie;
+    VideoItem *videoItem;
+    QAbstractButton *playButton;
+    QSlider *positionSlider;
+};
+
+#endif
+
diff --git a/examples/video/videowidget/main.cpp b/examples/video/videowidget/main.cpp
new file mode 100644
index 0000000..4fba301
--- /dev/null
+++ b/examples/video/videowidget/main.cpp
@@ -0,0 +1,54 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://qt.nokia.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "videoplayer.h"
+
+#include <QtGui/QApplication>
+
+int main(int argc, char *argv[])
+{
+    QApplication app(argc, argv);
+
+    VideoPlayer player;
+    player.show();
+
+    return app.exec();
+}
diff --git a/examples/video/videowidget/videoplayer.cpp b/examples/video/videowidget/videoplayer.cpp
new file mode 100644
index 0000000..2e4c758
--- /dev/null
+++ b/examples/video/videowidget/videoplayer.cpp
@@ -0,0 +1,183 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://qt.nokia.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "videoplayer.h"
+
+#include "videowidget.h"
+
+#include <QtMultimedia>
+
+VideoPlayer::VideoPlayer(QWidget *parent)
+    : QWidget(parent)
+    , surface(0)
+    , playButton(0)
+    , positionSlider(0)
+{
+    connect(&movie, SIGNAL(stateChanged(QMovie::MovieState)),
+            this, SLOT(movieStateChanged(QMovie::MovieState)));
+    connect(&movie, SIGNAL(frameChanged(int)),
+            this, SLOT(frameChanged(int)));
+
+    VideoWidget *videoWidget = new VideoWidget;
+    surface = videoWidget->videoSurface();
+
+    QAbstractButton *openButton = new QPushButton(tr("Open..."));
+    connect(openButton, SIGNAL(clicked()), this, SLOT(openFile()));
+
+    playButton = new QPushButton;
+    playButton->setEnabled(false);
+    playButton->setIcon(style()->standardIcon(QStyle::SP_MediaPlay));
+
+    connect(playButton, SIGNAL(clicked()),
+            this, SLOT(play()));
+
+    positionSlider = new QSlider(Qt::Horizontal);
+    positionSlider->setRange(0, 0);
+
+    connect(positionSlider, SIGNAL(sliderMoved(int)),
+            this, SLOT(setPosition(int)));
+
+    connect(&movie, SIGNAL(frameChanged(int)),
+            positionSlider, SLOT(setValue(int)));
+
+    QBoxLayout *controlLayout = new QHBoxLayout;
+    controlLayout->setMargin(0);
+    controlLayout->addWidget(openButton);
+    controlLayout->addWidget(playButton);
+    controlLayout->addWidget(positionSlider);
+
+    QBoxLayout *layout = new QVBoxLayout;
+    layout->addWidget(videoWidget);
+    layout->addLayout(controlLayout);
+
+    setLayout(layout);
+}
+
+VideoPlayer::~VideoPlayer()
+{
+}
+
+void VideoPlayer::openFile()
+{
+    QString fileName = QFileDialog::getOpenFileName(this, tr("Open Movie"));
+
+    if (!fileName.isEmpty()) {
+        if (surface->isStarted())
+            surface->stop();
+
+        movie.setFileName(fileName);
+
+        playButton->setEnabled(true);
+        positionSlider->setMaximum(movie.frameCount());
+
+        movie.jumpToFrame(0);
+    }
+}
+
+void VideoPlayer::play()
+{
+    switch(movie.state()) {
+    case QMovie::NotRunning:
+        movie.start();
+        break;
+    case QMovie::Paused:
+        movie.setPaused(false);
+        break;
+    case QMovie::Running:
+        movie.setPaused(true);
+        break;
+    }
+}
+
+void VideoPlayer::movieStateChanged(QMovie::MovieState state)
+{
+    switch(state) {
+    case QMovie::NotRunning:
+    case QMovie::Paused:
+        playButton->setIcon(style()->standardIcon(QStyle::SP_MediaPlay));
+        break;
+    case QMovie::Running:
+        playButton->setIcon(style()->standardIcon(QStyle::SP_MediaPause));
+        break;
+    }
+}
+
+void VideoPlayer::frameChanged(int frame)
+{
+    if (!presentImage(movie.currentImage())) {
+        movie.stop();
+        playButton->setEnabled(false);
+        positionSlider->setMaximum(0);
+    } else {
+        positionSlider->setValue(frame);
+    }
+}
+
+void VideoPlayer::setPosition(int frame)
+{
+    movie.jumpToFrame(frame);
+}
+
+bool VideoPlayer::presentImage(const QImage &image)
+{
+    QVideoFrame frame(image);
+
+    if (!frame.isValid())
+        return false;
+
+    QVideoSurfaceFormat currentFormat = surface->surfaceFormat();
+
+    if (frame.pixelFormat() != currentFormat.pixelFormat()
+            || frame.size() != currentFormat.frameSize()) {
+        QVideoSurfaceFormat format(frame.size(), frame.pixelFormat());
+
+        if (!surface->start(format))
+            return false;
+    }
+
+    if (!surface->present(frame)) {
+        surface->stop();
+
+        return false;
+    } else {
+        return true;
+    }
+}
diff --git a/examples/video/videowidget/videoplayer.h b/examples/video/videowidget/videoplayer.h
new file mode 100644
index 0000000..76f3e9e
--- /dev/null
+++ b/examples/video/videowidget/videoplayer.h
@@ -0,0 +1,79 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://qt.nokia.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef VIDEOPLAYER_H
+#define VIDEOPLAYER_H
+
+#include <QtGui/QMovie>
+#include <QtGui/QWidget>
+
+QT_BEGIN_NAMESPACE
+class QAbstractButton;
+class QAbstractVideoSurface;
+class QSlider;
+QT_END_NAMESPACE
+
+class VideoPlayer : public QWidget
+{
+    Q_OBJECT
+public:
+    VideoPlayer(QWidget *parent = 0);
+    ~VideoPlayer();
+
+public slots:
+    void openFile();
+    void play();
+
+private slots:
+    void movieStateChanged(QMovie::MovieState state);
+    void frameChanged(int frame);
+    void setPosition(int frame);
+
+private:
+    bool presentImage(const QImage &image);
+
+    QMovie movie;
+    QAbstractVideoSurface *surface;
+    QAbstractButton *playButton;
+    QSlider *positionSlider;
+};
+
+#endif
diff --git a/examples/video/videowidget/videowidget.cpp b/examples/video/videowidget/videowidget.cpp
new file mode 100644
index 0000000..b29d2ae
--- /dev/null
+++ b/examples/video/videowidget/videowidget.cpp
@@ -0,0 +1,114 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://qt.nokia.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "videowidget.h"
+
+#include "videowidgetsurface.h"
+
+#include <QtMultimedia>
+
+//! [0]
+VideoWidget::VideoWidget(QWidget *parent)
+    : QWidget(parent)
+    , surface(0)
+{
+    setAutoFillBackground(false);
+    setAttribute(Qt::WA_NoSystemBackground, true);
+    setAttribute(Qt::WA_PaintOnScreen, true);
+
+    QPalette palette = this->palette();
+    palette.setColor(QPalette::Background, Qt::black);
+    setPalette(palette);
+
+    setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::MinimumExpanding);
+
+    surface = new VideoWidgetSurface(this);
+}
+//! [0]
+
+//! [1]
+VideoWidget::~VideoWidget()
+{
+    delete surface;
+}
+//! [1]
+
+//! [2]
+QSize VideoWidget::sizeHint() const
+{
+    return surface->surfaceFormat().sizeHint();
+}
+//! [2]
+
+
+//! [3]
+void VideoWidget::paintEvent(QPaintEvent *event)
+{
+    QPainter painter(this);
+
+    if (surface->isStarted()) {
+        const QRect videoRect = surface->videoRect();
+
+        if (!videoRect.contains(event->rect())) {
+            QRegion region = event->region();
+            region.subtract(videoRect);
+
+            QBrush brush = palette().background();
+
+            foreach (const QRect &rect, region.rects())
+                painter.fillRect(rect, brush);
+        }
+
+        surface->paint(&painter);
+    } else {
+        painter.fillRect(event->rect(), palette().background());
+    }
+}
+//! [3]
+
+//! [4]
+void VideoWidget::resizeEvent(QResizeEvent *event)
+{
+    QWidget::resizeEvent(event);
+
+    surface->updateVideoRect();
+}
+//! [4]
diff --git a/examples/video/videowidget/videowidget.h b/examples/video/videowidget/videowidget.h
new file mode 100644
index 0000000..737d32d
--- /dev/null
+++ b/examples/video/videowidget/videowidget.h
@@ -0,0 +1,76 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://qt.nokia.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef VIDEOWIDGET_H
+#define VIDEOWIDGET_H
+
+#include "videowidgetsurface.h"
+
+#include <QtGui/QWidget>
+
+QT_BEGIN_NAMESPACE
+class QAbstractVideoSurface;
+QT_END_NAMESPACE
+
+class VideoWidgetSurface;
+
+//! [0]
+class VideoWidget : public QWidget
+{
+    Q_OBJECT
+public:
+    VideoWidget(QWidget *parent = 0);
+    ~VideoWidget();
+
+    QAbstractVideoSurface *videoSurface() const { return surface; }
+
+    QSize sizeHint() const;
+
+protected:
+    void paintEvent(QPaintEvent *event);
+    void resizeEvent(QResizeEvent *event);
+
+private:
+    VideoWidgetSurface *surface;
+};
+//! [0]
+
+#endif
diff --git a/examples/video/videowidget/videowidget.pro b/examples/video/videowidget/videowidget.pro
new file mode 100644
index 0000000..a006f2f
--- /dev/null
+++ b/examples/video/videowidget/videowidget.pro
@@ -0,0 +1,14 @@
+TEMPLATE = app
+
+QT += multimedia
+
+HEADERS = \
+    videoplayer.h \
+    videowidget.h \
+    videowidgetsurface.h
+
+SOURCES = \
+    main.cpp \
+    videoplayer.cpp \
+    videowidget.cpp \
+    videowidgetsurface.cpp
diff --git a/examples/video/videowidget/videowidgetsurface.cpp b/examples/video/videowidget/videowidgetsurface.cpp
new file mode 100644
index 0000000..6089b6f
--- /dev/null
+++ b/examples/video/videowidget/videowidgetsurface.cpp
@@ -0,0 +1,175 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://qt.nokia.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "videowidgetsurface.h"
+
+#include <QtMultimedia>
+
+VideoWidgetSurface::VideoWidgetSurface(QWidget *widget, QObject *parent)
+    : QAbstractVideoSurface(parent)
+    , widget(widget)
+    , imageFormat(QImage::Format_Invalid)
+{
+}
+
+//! [0]
+QList<QVideoFrame::PixelFormat> VideoWidgetSurface::supportedPixelFormats(
+        QAbstractVideoBuffer::HandleType handleType) const
+{
+    if (handleType == QAbstractVideoBuffer::NoHandle) {
+        return QList<QVideoFrame::PixelFormat>()
+                << QVideoFrame::Format_RGB32
+                << QVideoFrame::Format_ARGB32
+                << QVideoFrame::Format_ARGB32_Premultiplied
+                << QVideoFrame::Format_RGB565
+                << QVideoFrame::Format_RGB555;
+    } else {
+        return QList<QVideoFrame::PixelFormat>();
+    }
+}
+//! [0]
+
+//! [1]
+bool VideoWidgetSurface::isFormatSupported(
+        const QVideoSurfaceFormat &format, QVideoSurfaceFormat *similar) const
+{
+    Q_UNUSED(similar);
+
+    const QImage::Format imageFormat = QVideoFrame::equivalentImageFormat(format.pixelFormat());
+    const QSize size = format.frameSize();
+
+    return imageFormat != QImage::Format_Invalid
+            && !size.isEmpty()
+            && format.handleType() == QAbstractVideoBuffer::NoHandle;
+}
+//! [1]
+
+//! [2]
+bool VideoWidgetSurface::start(const QVideoSurfaceFormat &format)
+{
+    const QImage::Format imageFormat = QVideoFrame::equivalentImageFormat(format.pixelFormat());
+    const QSize size = format.frameSize();
+
+    if (imageFormat != QImage::Format_Invalid && !size.isEmpty()) {
+        this->imageFormat = imageFormat;
+        imageSize = size;
+        sourceRect = format.viewport();
+
+        QAbstractVideoSurface::start(format);
+
+        widget->updateGeometry();
+        updateVideoRect();
+
+        return true;
+    } else {
+        return false;
+    }
+}
+//! [2]
+
+//! [3]
+void VideoWidgetSurface::stop()
+{
+    currentFrame = QVideoFrame();
+    targetRect = QRect();
+
+    QAbstractVideoSurface::stop();
+
+    widget->update();
+}
+//! [3]
+
+//! [4]
+bool VideoWidgetSurface::present(const QVideoFrame &frame)
+{
+    if (surfaceFormat().pixelFormat() != frame.pixelFormat()
+            || surfaceFormat().frameSize() != frame.size()) {
+        setError(IncorrectFormatError);
+        stop();
+
+        return false;
+    } else {
+        currentFrame = frame;
+
+        widget->repaint(targetRect);
+
+        return true;
+    }
+}
+//! [4]
+
+//! [5]
+void VideoWidgetSurface::updateVideoRect()
+{
+    QSize size = surfaceFormat().sizeHint();
+    size.scale(widget->size().boundedTo(size), Qt::KeepAspectRatio);
+
+    targetRect = QRect(QPoint(0, 0), size);
+    targetRect.moveCenter(widget->rect().center());
+}
+//! [5]
+
+//! [6]
+void VideoWidgetSurface::paint(QPainter *painter)
+{
+    if (currentFrame.map(QAbstractVideoBuffer::ReadOnly)) {
+        const QTransform oldTransform = painter->transform();
+
+        if (surfaceFormat().scanLineDirection() == QVideoSurfaceFormat::BottomToTop) {
+           painter->scale(1, -1);
+           painter->translate(0, -widget->height());
+        }
+
+        QImage image(
+                currentFrame.bits(),
+                currentFrame.width(),
+                currentFrame.height(),
+                currentFrame.bytesPerLine(),
+                imageFormat);
+
+        painter->drawImage(targetRect, image, sourceRect);
+
+        painter->setTransform(oldTransform);
+
+        currentFrame.unmap();
+    }
+}
+//! [6]
diff --git a/examples/video/videowidget/videowidgetsurface.h b/examples/video/videowidget/videowidgetsurface.h
new file mode 100644
index 0000000..56ba329
--- /dev/null
+++ b/examples/video/videowidget/videowidgetsurface.h
@@ -0,0 +1,81 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://qt.nokia.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef VIDEOWIDGETSURFACE_H
+#define VIDEOWIDGETSURFACE_H
+
+#include <QtCore/QRect>
+#include <QtGui/QImage>
+#include <QtMultimedia/QAbstractVideoSurface>
+#include <QtMultimedia/QVideoFrame>
+
+//! [0]
+class VideoWidgetSurface : public QAbstractVideoSurface
+{
+    Q_OBJECT
+public:
+    VideoWidgetSurface(QWidget *widget, QObject *parent = 0);
+
+    QList<QVideoFrame::PixelFormat> supportedPixelFormats(
+            QAbstractVideoBuffer::HandleType handleType = QAbstractVideoBuffer::NoHandle) const;
+    bool isFormatSupported(const QVideoSurfaceFormat &format, QVideoSurfaceFormat *similar) const;
+
+    bool start(const QVideoSurfaceFormat &format);
+    void stop();
+
+    bool present(const QVideoFrame &frame);
+
+    QRect videoRect() const { return targetRect; }
+    void updateVideoRect();
+
+    void paint(QPainter *painter);
+
+private:
+    QWidget *widget;
+    QImage::Format imageFormat;
+    QRect targetRect;
+    QSize imageSize;
+    QRect sourceRect;
+    QVideoFrame currentFrame;
+};
+//! [0]
+
+#endif