/****************************************************************************
**
** 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 QtMultimedia module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial Usage
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** 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.
**
** 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 have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QABSTRACTVIDEOBUFFER_H
#define QABSTRACTVIDEOBUFFER_H

#include <QtCore/qmetatype.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Multimedia)

class QVariant;

class QAbstractVideoBufferPrivate;

class Q_MULTIMEDIA_EXPORT QAbstractVideoBuffer
{
public:
    enum HandleType
    {
        NoHandle,
        GLTextureHandle,
        XvShmImageHandle,
        CoreImageHandle,
        QPixmapHandle,
        UserHandle = 1000
    };

    enum MapMode
    {
        NotMapped = 0x00,
        ReadOnly  = 0x01,
        WriteOnly = 0x02,
        ReadWrite = ReadOnly | WriteOnly
    };

    QAbstractVideoBuffer(HandleType type);
    virtual ~QAbstractVideoBuffer();

    HandleType handleType() const;

    virtual MapMode mapMode() const = 0;

    virtual uchar *map(MapMode mode, int *numBytes, int *bytesPerLine) = 0;
    virtual void unmap() = 0;

    virtual QVariant handle() const;

protected:
    QAbstractVideoBuffer(QAbstractVideoBufferPrivate &dd, HandleType type);

    QAbstractVideoBufferPrivate *d_ptr;

private:
    Q_DECLARE_PRIVATE(QAbstractVideoBuffer)
    Q_DISABLE_COPY(QAbstractVideoBuffer)
};

QT_END_NAMESPACE

Q_DECLARE_METATYPE(QAbstractVideoBuffer::HandleType)
Q_DECLARE_METATYPE(QAbstractVideoBuffer::MapMode)

QT_END_HEADER

#endif
