qmediaenginevideobuffer_p.h

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// Copyright (C) 2026 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

#ifndef QMEDIAENGINEVIDEOBUFFER_P_H

#define QMEDIAENGINEVIDEOBUFFER_P_H

//

//  W A R N I N G

//  -------------

//

// This file is not part of the Qt API.  It exists purely as an

// implementation detail.  This header file may change from version to

// version without notice, or even be removed.

//

// We mean it.

//

#include <QtMultimedia/private/qhwvideobuffer_p.h>

#include <QtMultimedia/private/qwindowsd3d11rhitextureimporter_p.h>

#include <QtMultimedia/private/qwindowsd3d11texturereadback_p.h>

#include <QtCore/qsize.h>

#include <QtCore/private/qcomptr_p.h>

#include <d3d11.h>

#include <d3d11_1.h>

#include <memory>

QT_BEGIN_NAMESPACE

class QMediaEngineVideoBuffer : public QHwVideoBuffer

public:

    // 'importer' is created once by the player and shared with every video buffer, so that

    // the interop resources it caches (shared texture bridge, D3D11on12 wrapper device, WGL

    // interop device handle, etc.) survive across frames.

    QMediaEngineVideoBuffer(

            ComPtr<ID3D11Texture2D> texture, ComPtr<ID3D11Device> engineDevice, QSize frameSize,

            std::shared_ptr<QtMultimediaPrivate::QWindowsD3D11RhiTextureImporter> importer);

    ~QMediaEngineVideoBuffer() override;

    MapData map(QVideoFrame::MapMode mode) override;

    void unmap() override;

    QVideoFrameTexturesUPtr mapTextures(QRhi &rhi, QVideoFrameTexturesUPtr &oldTextures) override;

private:

    ComPtr<ID3D11Texture2D> m_texture;

    ComPtr<ID3D11Device> m_engineDevice;

    QSize m_frameSize;

    QtMultimediaPrivate::QWindowsD3D11TextureReadback m_readback;

    std::shared_ptr<QtMultimediaPrivate::QWindowsD3D11RhiTextureImporter> m_importer;

};

QT_END_NAMESPACE

#endif // QMEDIAENGINEVIDEOBUFFER_P_H