Revision control
++ // 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 "qmemoryvideobuffer_p.h"
++
++ QT_BEGIN_NAMESPACE
++
++ /*!
++ \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(QByteArray data, int bytesPerLine)
++ : m_bytesPerLine(bytesPerLine), m_data(std::move(data))
++ {
++ }
++
++ /*!
++ Destroys a system memory allocated video buffer.
++ */
++ QMemoryVideoBuffer::~QMemoryVideoBuffer() = default;
++
++ /*!
++ \reimp
++ */
++ QAbstractVideoBuffer::MapData QMemoryVideoBuffer::map(QVideoFrame::MapMode mode)
++ {
++ MapData mapData;
++
++ if (!m_data.isEmpty()) {
++ mapData.planeCount = 1;
++ mapData.bytesPerLine[0] = m_bytesPerLine;
++ // avoid detaching and extra copying in case the underlyingByteArray is
++ // being held by textures or anything else.
++ if (mode == QVideoFrame::ReadOnly)
++ mapData.data[0] = reinterpret_cast<uchar *>(const_cast<char *>(m_data.constData()));
++ else
++ mapData.data[0] = reinterpret_cast<uchar *>(m_data.data());
++ mapData.dataSize[0] = m_data.size();
++ }
++
++ return mapData;
++ }
++
++ QT_END_NAMESPACE