qvideoframetexturefromsource.cpp

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// Copyright (C) 2024 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 "qvideoframetexturefromsource_p.h"
 
QT_BEGIN_NAMESPACE
 
using namespace QVideoTextureHelper;
 
QVideoFrameTexturesFromRhiTextureArray::QVideoFrameTexturesFromRhiTextureArray(
        RhiTextureArray &&rhiTextures, QVideoFrame sourceFrame)
    : QVideoFrameTextures(std::move(sourceFrame)), m_rhiTextures(std::move(rhiTextures))
{
}
 
// out-of-line destructor to get arount potential RTTI problems
QVideoFrameTexturesFromRhiTextureArray::~QVideoFrameTexturesFromRhiTextureArray() = default;
 
QRhiTexture *QVideoFrameTexturesFromRhiTextureArray::texture(uint plane) const
{
    return plane < m_rhiTextures.size() ? m_rhiTextures[plane].get() : nullptr;
}
 
RhiTextureArray QVideoFrameTexturesFromRhiTextureArray::takeTextureArray() &&
{
    return std::move(m_rhiTextures);
}
 
QVideoFrameTexturesFromMemory::QVideoFrameTexturesFromMemory(RhiTextureArray &&rhiTextures,
                                                             QVideoFrame mappedFrame)
    : QVideoFrameTexturesFromRhiTextureArray(std::move(rhiTextures), mappedFrame),
      m_mappedFrame(std::move(mappedFrame))
{
    Q_ASSERT(!m_mappedFrame.isValid() || m_mappedFrame.isReadable());
}
 
// We keep the source frame mapped until QRhi::endFrame is invoked.
// QRhi::endFrame ensures that the mapped frame's memory has been loaded into the texture.
// See QTBUG-123174 for bug's details.
QVideoFrameTexturesFromMemory::~QVideoFrameTexturesFromMemory()
{
    m_mappedFrame.unmap();
}
 
void QVideoFrameTexturesFromMemory::onFrameEndInvoked()
{
    // After invoking QRhi::endFrame, the texture is loaded, and we don't need to
    // to store the source mapped frame anymore
    m_mappedFrame.unmap();
    m_mappedFrame = {};
}
 
QVideoFrameTexturesFromHandlesSet::QVideoFrameTexturesFromHandlesSet(
        RhiTextureArray &&rhiTextures, QVideoFrameTexturesHandlesUPtr handles,
        QVideoFrame sourceFrame)
    : QVideoFrameTexturesFromRhiTextureArray(std::move(rhiTextures), std::move(sourceFrame)),
      m_textureHandles(std::move(handles))
{
}
 
// out-of-line destructor to get arount potential RTTI problems
QVideoFrameTexturesFromHandlesSet::~QVideoFrameTexturesFromHandlesSet() = default;
 
QVideoFrameTexturesHandlesUPtr QVideoFrameTexturesFromHandlesSet::takeHandles()
{
    return std::move(m_textureHandles);
}
 
QT_END_NAMESPACE