qwasmvideoframegrabber_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

//

//  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.

//

#ifndef QWASMVIDEOFRAMEGRABBER_H

#define QWASMVIDEOFRAMEGRABBER_H

#include <QtMultimedia/qvideoframeformat.h>

#include <emscripten/html5_webgl.h>

#include <string_view>

QT_BEGIN_NAMESPACE

class QWasmVideoOutput;

class QWasmVideoFrameGrabber

public:

    explicit QWasmVideoFrameGrabber(QWasmVideoOutput *videoOutput);

    void startFrameLoop();

    static QVideoFrameFormat::PixelFormat fromJsPixelFormat(std::string_view videoFormat);

private:

    void detectWebGLContext();

    void processVideoFrame();

    void processWebGLVideoFrame();

    QWasmVideoOutput *m_videoOutput = nullptr;

    EMSCRIPTEN_WEBGL_CONTEXT_HANDLE m_glContextHandle = 0;

    bool m_hasWebGLContext = false;

    bool m_webGLContextChecked = false;

};

QT_END_NAMESPACE

#endif // QWASMVIDEOFRAMEGRABBER_H