qeglimagefunctions_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 QEGLIMAGEFUNCTIONS_P_H

#define QEGLIMAGEFUNCTIONS_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/qmultimedia_drm_support_p.h>

#include <QtMultimedia/private/qmultimedia_gl_support_p.h>

#include <QtMultimedia/private/qtmultimediaglobal_p.h>

#include <QtGui/qopengl.h>

#include <QtCore/qspan.h>

#include <EGL/egl.h>

#include <EGL/eglext.h>

#include <optional>

QT_BEGIN_NAMESPACE

namespace QtMultimediaPrivate {

class Q_MULTIMEDIA_EXPORT QEglImageFunctions

    QEglImageFunctions();

public:

    static const QEglImageFunctions &instance();

    bool isValid() const;

    void glEGLImageTargetTexture2DOES(GLenum, GLeglImageOES) const;

    EGLImageHandle eglCreateImage(EGLDisplay, EGLContext, EGLenum, EGLClientBuffer,

                                  QSpan<const EGLAttrib> attribs = {}) const;

    EGLBoolean eglDestroyImage(EGLDisplay, EGLImage) const;

    // Returns whether `modifier` is a supported dma-buf import modifier for `drmFormat` on

    // `display`, or nullopt if this EGL implementation doesn't support querying modifiers at

    // all (EGL_EXT_image_dma_buf_import_modifiers unavailable).

    std::optional<bool> isDmaBufModifierSupported(EGLDisplay display, DRMFormat drmFormat,

                                                  DRMModifier modifier) const;

private:

#ifdef GL_OES_EGL_image

    const PFNGLEGLIMAGETARGETTEXTURE2DOESPROC m_glEGLImageTargetTexture2DOES = nullptr;

#endif

#ifdef EGL_VERSION_1_5

    // egl.h declares eglCreateImage/eglDestroyImage, but the egl library may not provide the

    // symbols, so we need to resolve them at run-time.

    // NB: android does not declare these function pointer types

    typedef EGLImage(EGLAPIENTRYP PFNEGLCREATEIMAGEPROC)(EGLDisplay, EGLContext, EGLenum,

                                                         EGLClientBuffer, const EGLAttrib *);

    typedef EGLBoolean(EGLAPIENTRYP PFNEGLDESTROYIMAGEPROC)(EGLDisplay, EGLImage);

    const PFNEGLCREATEIMAGEPROC m_eglCreateImage = nullptr;

    const PFNEGLDESTROYIMAGEPROC m_eglDestroyImage = nullptr;

#endif

#if defined(EGL_KHR_image)

    const PFNEGLCREATEIMAGEKHRPROC m_eglCreateImageKHR = nullptr;

    const PFNEGLDESTROYIMAGEKHRPROC m_eglDestroyImageKHR = nullptr;

#endif

#if defined(EGL_EXT_image_dma_buf_import_modifiers)

    const PFNEGLQUERYDMABUFMODIFIERSEXTPROC m_eglQueryDmaBufModifiersEXT = nullptr;

#endif

};

} // namespace QtMultimediaPrivate

QT_END_NAMESPACE

#endif // QEGLIMAGEFUNCTIONS_P_H