qabstractvideobuffer.cpp

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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#include "qabstractvideobuffer_p.h"
 
#include <qvariant.h>
#include <rhi/qrhi.h>
 
#include <QDebug>
 
 
QT_BEGIN_NAMESPACE
 
QAbstractVideoBuffer::QAbstractVideoBuffer(QVideoFrame::HandleType type, QRhi *rhi)
    : m_type(type),
      m_rhi(rhi)
{
}
 
QAbstractVideoBuffer::~QAbstractVideoBuffer()
{
}
 
QVideoFrame::HandleType QAbstractVideoBuffer::handleType() const
{
    return m_type;
}
 
QRhi *QAbstractVideoBuffer::rhi() const
{
    return m_rhi;
}
 
/*
    \fn int QAbstractPlanarVideoBuffer::map(MapMode mode, int *numBytes, int bytesPerLine[4], uchar *data[4])
 
    Maps the contents of a video buffer to memory.
 
    The map \a mode indicates whether the contents of the mapped memory should be read from and/or
    written to the buffer.  If the map mode includes the \c QVideoFrame::ReadOnly flag the
    mapped memory will be populated with the content of the buffer when initially mapped.  If the map
    mode includes the \c QVideoFrame::WriteOnly flag the content of the possibly modified
    mapped memory will be written back to the buffer when unmapped.
 
    When access to the data is no longer needed be sure to call the unmap() function to release the
    mapped memory and possibly update the buffer contents.
 
    Returns the number of planes in the mapped video data.  For each plane the line stride of that
    plane will be returned in \a bytesPerLine, and a pointer to the plane data will be returned in
    \a data.  The accumulative size of the mapped data is returned in \a numBytes.
 
    \sa QAbstractVideoBuffer::map(), QAbstractVideoBuffer::unmap(), QVideoFrame::mapMode()
*/
 
#ifndef QT_NO_DEBUG_STREAM
QDebug operator<<(QDebug dbg, QVideoFrame::MapMode mode)
{
    QDebugStateSaver saver(dbg);
    dbg.nospace();
    switch (mode) {
    case QVideoFrame::ReadOnly:
        return dbg << "ReadOnly";
    case QVideoFrame::ReadWrite:
        return dbg << "ReadWrite";
    case QVideoFrame::WriteOnly:
        return dbg << "WriteOnly";
    default:
        return dbg << "NotMapped";
    }
}
#endif
 
QT_END_NAMESPACE