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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtMultimedia module 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.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QABSTRACTVIDEOSURFACE_H
#define QABSTRACTVIDEOSURFACE_H
#include <QtCore/qobject.h>
#include <QtMultimedia/qvideoframe.h>
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
QT_MODULE(Multimedia)
class QRectF;
class QVideoSurfaceFormat;
class QAbstractVideoSurfacePrivate;
class Q_MULTIMEDIA_EXPORT QAbstractVideoSurface : public QObject
{
Q_OBJECT
public:
enum Error
{
NoError,
UnsupportedFormatError,
IncorrectFormatError,
StoppedError,
ResourceError
};
explicit QAbstractVideoSurface(QObject *parent = 0);
~QAbstractVideoSurface();
virtual QList<QVideoFrame::PixelFormat> supportedPixelFormats(
QAbstractVideoBuffer::HandleType handleType = QAbstractVideoBuffer::NoHandle) const = 0;
virtual bool isFormatSupported(
const QVideoSurfaceFormat &format, QVideoSurfaceFormat *similar = 0) const;
QVideoSurfaceFormat surfaceFormat() const;
virtual bool start(const QVideoSurfaceFormat &format);
virtual void stop();
bool isStarted() const;
virtual bool present(const QVideoFrame &frame) = 0;
Error error() const;
Q_SIGNALS:
void startedChanged(bool started);
void surfaceFormatChanged(const QVideoSurfaceFormat &format);
void supportedFormatsChanged();
protected:
QAbstractVideoSurface(QAbstractVideoSurfacePrivate &dd, QObject *parent);
void setError(Error error);
private:
Q_DECLARE_PRIVATE(QAbstractVideoSurface)
};
QT_END_NAMESPACE
QT_END_HEADER
#endif
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