a6268601c9
They aren't useful in the case of QtMultimedia{Kit}
Change-Id: If1b0b6625763c85907fb05beb9c440046472ddef
Reviewed-by: Jonas Rabbe <jonas.rabbe@nokia.com>
130 lines
3.5 KiB
C++
130 lines
3.5 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** GNU Lesser General Public License Usage
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** This file may be used under the terms of the GNU Lesser General Public
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** License version 2.1 as published by the Free Software Foundation and
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** appearing in the file LICENSE.LGPL included in the packaging of this
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** file. Please review the following information to ensure the GNU Lesser
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** General Public License version 2.1 requirements will be met:
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU General
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** Public License version 3.0 as published by the Free Software Foundation
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** and appearing in the file LICENSE.GPL included in the packaging of this
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** file. Please review the following information to ensure the GNU General
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** Public License version 3.0 requirements will be met:
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** http://www.gnu.org/copyleft/gpl.html.
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**
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** Other Usage
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** Alternatively, this file may be used in accordance with the terms and
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** conditions contained in a signed written agreement between you and Nokia.
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "qmemoryvideobuffer_p.h"
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#include "qabstractvideobuffer_p.h"
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#include <qbytearray.h>
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QT_BEGIN_NAMESPACE
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class QMemoryVideoBufferPrivate : public QAbstractVideoBufferPrivate
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{
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public:
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QMemoryVideoBufferPrivate()
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: bytesPerLine(0)
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, mapMode(QAbstractVideoBuffer::NotMapped)
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{
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}
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int bytesPerLine;
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QAbstractVideoBuffer::MapMode mapMode;
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QByteArray data;
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};
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/*!
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\class QMemoryVideoBuffer
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\brief The QMemoryVideoBuffer class provides a system memory allocated video data buffer.
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\internal
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QMemoryVideoBuffer is the default video buffer for allocating system memory. It may be used to
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allocate memory for a QVideoFrame without implementing your own QAbstractVideoBuffer.
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*/
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/*!
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Constructs a video buffer with an image stride of \a bytesPerLine from a byte \a array.
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*/
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QMemoryVideoBuffer::QMemoryVideoBuffer(const QByteArray &array, int bytesPerLine)
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: QAbstractVideoBuffer(*new QMemoryVideoBufferPrivate, NoHandle)
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{
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Q_D(QMemoryVideoBuffer);
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d->data = array;
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d->bytesPerLine = bytesPerLine;
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}
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/*!
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Destroys a system memory allocated video buffer.
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*/
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QMemoryVideoBuffer::~QMemoryVideoBuffer()
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{
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}
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/*!
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\reimp
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*/
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QAbstractVideoBuffer::MapMode QMemoryVideoBuffer::mapMode() const
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{
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return d_func()->mapMode;
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}
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/*!
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\reimp
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*/
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uchar *QMemoryVideoBuffer::map(MapMode mode, int *numBytes, int *bytesPerLine)
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{
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Q_D(QMemoryVideoBuffer);
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if (d->mapMode == NotMapped && d->data.data() && mode != NotMapped) {
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d->mapMode = mode;
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if (numBytes)
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*numBytes = d->data.size();
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if (bytesPerLine)
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*bytesPerLine = d->bytesPerLine;
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return reinterpret_cast<uchar *>(d->data.data());
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} else {
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return 0;
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}
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}
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/*!
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\reimp
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*/
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void QMemoryVideoBuffer::unmap()
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{
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d_func()->mapMode = NotMapped;
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}
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QT_END_NAMESPACE
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