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

1 files changed, 81 insertions, 0 deletions

diff --git a/examples/video/videowidget/videowidgetsurface.h b/examples/video/videowidget/videowidgetsurface.h
new file mode 100644
index 0000000..56ba329
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+++ b/examples/video/videowidget/videowidgetsurface.h
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+/****************************************************************************
+**
+** 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