--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/qtmobility/examples/videowidget/videowidgetsurface.cpp	Wed Jun 23 19:08:38 2010 +0300
@@ -0,0 +1,177 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** 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 Technology Preview License Agreement accompanying
+** this package.
+**
+** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "videowidgetsurface.h"
+
+#include <QtGui>
+#include <qabstractvideosurface.h>
+#include <qvideosurfaceformat.h>
+
+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::imageFormatFromPixelFormat(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::imageFormatFromPixelFormat(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]