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Diffstat (limited to 'src/multimediakit/video/qmemoryvideobuffer.cpp')
-rw-r--r-- | src/multimediakit/video/qmemoryvideobuffer.cpp | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/src/multimediakit/video/qmemoryvideobuffer.cpp b/src/multimediakit/video/qmemoryvideobuffer.cpp new file mode 100644 index 000000000..92d16a264 --- /dev/null +++ b/src/multimediakit/video/qmemoryvideobuffer.cpp @@ -0,0 +1,133 @@ +/**************************************************************************** +** +** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the Qt Mobility Components. +** +** $QT_BEGIN_LICENSE:LGPL$ +** 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. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, 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. +** +** Other Usage +** Alternatively, this file may be used in accordance with the terms and +** conditions contained in a signed written agreement between you and Nokia. +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qmemoryvideobuffer_p.h" + +#include "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 + \since QtMobility 1.0 + + 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 + \since 1.1 +*/ +QAbstractVideoBuffer::MapMode QMemoryVideoBuffer::mapMode() const +{ + return d_func()->mapMode; +} + +/*! + \reimp + \since 1.1 +*/ +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 + \since 1.1 +*/ +void QMemoryVideoBuffer::unmap() +{ + d_func()->mapMode = NotMapped; +} + +QT_END_NAMESPACE |