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

#include "qmemoryvideobuffer_p.h"

#include <private/qabstractvideobuffer_p.h>

#include <qbytearray.h>

QT_BEGIN_NAMESPACE

class QMemoryVideoBufferPrivate : public QAbstractVideoBufferPrivate

{

public:

    QMemoryVideoBufferPrivate()

        : bytesPerLine(0)

        , mapMode(QAbstractVideoBuffer::NotMapped)

    {

    }

    int bytesPerLine;

    QAbstractVideoBuffer::MapMode mapMode;

    QByteArray data;

};

/*!

    \class QMemoryVideoBuffer

    \brief The QMemoryVideoBuffer class provides a system memory allocated video data buffer.

    \internal

    QMemoryVideoBuffer is the default video buffer for allocating system memory.  It may be used to

    allocate memory for a QVideoFrame without implementing your own QAbstractVideoBuffer.

*/

/*!

    Constructs a video buffer with an image stride of \a bytesPerLine from a byte \a array.

*/

QMemoryVideoBuffer::QMemoryVideoBuffer(const QByteArray &array, int bytesPerLine)

    : QAbstractVideoBuffer(*new QMemoryVideoBufferPrivate, NoHandle)

{

    Q_D(QMemoryVideoBuffer);

    d->data = array;

    d->bytesPerLine = bytesPerLine;

}

/*!

    Destroys a system memory allocated video buffer.

*/

QMemoryVideoBuffer::~QMemoryVideoBuffer()

{

}

/*!

    \reimp

*/

QAbstractVideoBuffer::MapMode QMemoryVideoBuffer::mapMode() const

{

    return d_func()->mapMode;

}

/*!

    \reimp

*/

uchar *QMemoryVideoBuffer::map(MapMode mode, int *numBytes, int *bytesPerLine)

{

    Q_D(QMemoryVideoBuffer);

    if (d->mapMode == NotMapped && d->data.data() && mode != NotMapped) {

        d->mapMode = mode;

        if (numBytes)

            *numBytes = d->data.size();

        if (bytesPerLine)

            *bytesPerLine = d->bytesPerLine;

        return reinterpret_cast<uchar *>(d->data.data());

    } else {

        return 0;

    }

}

/*!

    \reimp

*/

void QMemoryVideoBuffer::unmap()

{

    d_func()->mapMode = NotMapped;

}

QT_END_NAMESPACE