/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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** This file is part of the QtMultimedia module of the Qt Toolkit.
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****************************************************************************/

#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