qeglfsmaliintegration.cpp

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// Copyright (C) 2016 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

// Qt-Security score:significant reason:default

#include "qeglfsmaliintegration.h"

#include <unistd.h>

#include <fcntl.h>

#include <sys/ioctl.h>

#include <linux/fb.h>

#include <private/qcore_unix_p.h>

QT_BEGIN_NAMESPACE

struct shadow_fbdev_window {

    unsigned short width;

    unsigned short height;

};

void QEglFSMaliIntegration::platformInit()

    // Keep the non-overridden base class functions based on fb0 working.

    QEglFSDeviceIntegration::platformInit();

    int fd = qt_safe_open("/dev/fb0", O_RDWR, 0);

    if (fd == -1)

        qWarning("Failed to open fb to detect screen resolution!");

    struct fb_var_screeninfo vinfo;

    memset(&vinfo, 0, sizeof(vinfo));

    if (ioctl(fd, FBIOGET_VSCREENINFO, &vinfo) == -1)

        qWarning("Could not get variable screen info");

    vinfo.bits_per_pixel   = 32;

    vinfo.red.length       = 8;

    vinfo.green.length     = 8;

    vinfo.blue.length      = 8;

    vinfo.transp.length    = 8;

    vinfo.blue.offset      = 0;

    vinfo.green.offset     = 8;

    vinfo.red.offset       = 16;

    vinfo.transp.offset    = 24;

#if 0

    vinfo.yres_virtual     = 2 * vinfo.yres;

#endif

    if (ioctl(fd, FBIOPUT_VSCREENINFO, &vinfo) == -1)

        qErrnoWarning(errno, "Unable to set double buffer mode!");

    qt_safe_close(fd);

EGLNativeWindowType QEglFSMaliIntegration::createNativeWindow(QPlatformWindow *window, const QSize &size, const QSurfaceFormat &format)

    Q_UNUSED(window);

    Q_UNUSED(format);

    shadow_fbdev_window *fbwin = reinterpret_cast<shadow_fbdev_window *>(malloc(sizeof(shadow_fbdev_window)));

    if (NULL == fbwin)

        return 0;

    fbwin->width = size.width();

    fbwin->height = size.height();

    return (EGLNativeWindowType)fbwin;

void QEglFSMaliIntegration::destroyNativeWindow(EGLNativeWindowType window)

    free((void*)window);

QT_END_NAMESPACE