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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtMultimedia module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** 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 1.0, 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 are unsure which license is appropriate for your use, please
** contact the sales department at http://qt.nokia.com/contact.
** $QT_END_LICENSE$
**
****************************************************************************/
#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
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