qvideoframetexturepool.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 "qvideoframetexturepool_p.h"

#include <QtMultimedia/private/qvideotexturehelper_p.h>

#include <QtGui/rhi/qrhi.h>

QT_BEGIN_NAMESPACE

void QVideoFrameTexturePool::setCurrentFrame(QVideoFrame frame)

    m_texturesDirty = true;

    m_currentFrame = std::move(frame);

QVideoFrameTextures *QVideoFrameTexturePool::updateTextures(QRhi &rhi, QRhiResourceUpdateBatch &rub)

    const int currentSlot = rhi.currentFrameSlot();

    Q_ASSERT(size_t(currentSlot) < MaxSlotsCount);

    m_texturesDirty = false;

    QVideoFrameTexturesUPtr &textures = m_textureSlots[currentSlot];

    Q_ASSERT(!m_oldTextures);

    m_oldTextures = std::move(textures);

    textures = QVideoTextureHelper::createTextures(m_currentFrame, rhi, rub, m_oldTextures);

    m_currentSlot = textures ? currentSlot : std::optional<int>{};

    return textures.get();

void QVideoFrameTexturePool::onFrameEndInvoked()

    m_oldTextures.reset();

    if (m_currentSlot && m_textureSlots[*m_currentSlot])

        m_textureSlots[*m_currentSlot]->onFrameEndInvoked();

void QVideoFrameTexturePool::clearTextures()

    std::fill(std::begin(m_textureSlots), std::end(m_textureSlots), nullptr);

    m_currentSlot.reset();

    m_texturesDirty = m_currentFrame.isValid();

QT_END_NAMESPACE