/****************************************************************************
**
** Copyright (C) 2011 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.
**
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** GNU Lesser General Public License Usage
** 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.
**
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** rights. These rights are described in the Nokia Qt LGPL Exception
** 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 ensure the GNU General
** Public License version 3.0 requirements will be met:
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**
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** Alternatively, this file may be used in accordance with the terms and
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** $QT_END_LICENSE$
**
****************************************************************************/

#include "qimagevideobuffer_p.h"

#include <private/qabstractvideobuffer_p.h>

#include <qimage.h>
#include <qvariant.h>

QT_BEGIN_NAMESPACE

class QImageVideoBufferPrivate : public QAbstractVideoBufferPrivate
{
public:
    QImageVideoBufferPrivate()
        : mapMode(QAbstractVideoBuffer::NotMapped)
    {
    }

    QAbstractVideoBuffer::MapMode mapMode;
    QImage image;
};

QImageVideoBuffer::QImageVideoBuffer(const QImage &image)
    : QAbstractVideoBuffer(*new QImageVideoBufferPrivate, NoHandle)
{
    Q_D(QImageVideoBuffer);

    d->image = image;
}

QImageVideoBuffer::~QImageVideoBuffer()
{
}

QAbstractVideoBuffer::MapMode QImageVideoBuffer::mapMode() const
{
    return d_func()->mapMode;
}

uchar *QImageVideoBuffer::map(MapMode mode, int *numBytes, int *bytesPerLine)
{
    Q_D(QImageVideoBuffer);

    if (d->mapMode == NotMapped && d->image.bits() && mode != NotMapped) {
        d->mapMode = mode;

        if (numBytes)
            *numBytes = d->image.byteCount();

        if (bytesPerLine)
            *bytesPerLine = d->image.bytesPerLine();

        return d->image.bits();
    } else {
        return 0;
    }
}

void QImageVideoBuffer::unmap()
{
    Q_D(QImageVideoBuffer);

    d->mapMode = NotMapped;
}

QT_END_NAMESPACE