/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtMultimedia module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
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** accordance with the commercial license agreement provided with the
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** following information to ensure the GNU Lesser General Public License
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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** 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
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****************************************************************************/

#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
