/****************************************************************************

**

** 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 Qt Mobility Components.

**

** $QT_BEGIN_LICENSE:LGPL$

** 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 <qvideoframe.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

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) const;

    virtual QVideoSurfaceFormat nearestFormat(const QVideoSurfaceFormat &format) const;

    QVideoSurfaceFormat surfaceFormat() const;

    virtual bool start(const QVideoSurfaceFormat &format);

    virtual void stop();

    bool isActive() const;

    virtual bool present(const QVideoFrame &frame) = 0;

    Error error() const;

Q_SIGNALS:

    void activeChanged(bool active);

    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