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++ // Copyright (C) 2020 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 QWAYLANDSHAREDMEMORYFORMATHELPER_H
++ #define QWAYLANDSHAREDMEMORYFORMATHELPER_H
++
++ #include <QtGui/QImage>
++ #include <QtCore/private/qglobal_p.h>
++
++ //the correct protocol header for the wayland server or wayland client has to be
++ //included before this file is included
++
++ QT_BEGIN_NAMESPACE
++
++ class QWaylandSharedMemoryFormatHelper
++ {
++ public:
++ static inline wl_shm_format fromQImageFormat(QImage::Format format);
++ static inline QImage::Format fromWaylandShmFormat(wl_shm_format format)
++ {
++ switch (format) {
++ case WL_SHM_FORMAT_XRGB8888: return QImage::Format_RGB32;
++ case WL_SHM_FORMAT_ARGB8888: return QImage::Format_ARGB32_Premultiplied;
++ case WL_SHM_FORMAT_RGB565: return QImage::Format_RGB16;
++ case WL_SHM_FORMAT_XRGB1555: return QImage::Format_RGB555;
++ case WL_SHM_FORMAT_RGB888: return QImage::Format_RGB888;
++ case WL_SHM_FORMAT_BGR888: return QImage::Format_BGR888;
++ case WL_SHM_FORMAT_XRGB4444: return QImage::Format_RGB444;
++ case WL_SHM_FORMAT_ARGB4444: return QImage::Format_ARGB4444_Premultiplied;
++ case WL_SHM_FORMAT_XBGR8888: return QImage::Format_RGBX8888;
++ case WL_SHM_FORMAT_ABGR8888: return QImage::Format_RGBA8888_Premultiplied;
++ case WL_SHM_FORMAT_XBGR2101010: return QImage::Format_BGR30;
++ case WL_SHM_FORMAT_ABGR2101010: return QImage::Format_A2BGR30_Premultiplied;
++ case WL_SHM_FORMAT_XRGB2101010: return QImage::Format_RGB30;
++ case WL_SHM_FORMAT_ARGB2101010: return QImage::Format_A2RGB30_Premultiplied;
++ case WL_SHM_FORMAT_C8: return QImage::Format_Alpha8;
++ default: return QImage::Format_Invalid;
++ }
++ }
++
++ private:
++ //IMPLEMENTATION (which has to be inline in the header because of the include trick)
++ struct Array
++ {
++ Array(const size_t size, const wl_shm_format *data)
++ : size(size)
++ , data(data)
++ { }
++ const size_t size;
++ const wl_shm_format *data = nullptr;
++ };
++
++ static const Array getData()
++ {
++ static wl_shm_format formats_array[] = {
++ wl_shm_format(INT_MIN), //Format_Invalid,
++ wl_shm_format(INT_MIN), //Format_Mono,
++ wl_shm_format(INT_MIN), //Format_MonoLSB,
++ wl_shm_format(INT_MIN), //Format_Indexed8,
++ WL_SHM_FORMAT_XRGB8888, //Format_RGB32,
++ WL_SHM_FORMAT_ARGB8888, //Format_ARGB32,
++ WL_SHM_FORMAT_ARGB8888, //Format_ARGB32_Premultiplied,
++ WL_SHM_FORMAT_RGB565, //Format_RGB16,
++ wl_shm_format(INT_MIN), //Format_ARGB8565_Premultiplied,
++ wl_shm_format(INT_MIN), //Format_RGB666,
++ wl_shm_format(INT_MIN), //Format_ARGB6666_Premultiplied,
++ WL_SHM_FORMAT_XRGB1555, //Format_RGB555,
++ wl_shm_format(INT_MIN), //Format_ARGB8555_Premultiplied,
++ WL_SHM_FORMAT_RGB888, //Format_RGB888,
++ WL_SHM_FORMAT_XRGB4444, //Format_RGB444,
++ WL_SHM_FORMAT_ARGB4444, //Format_ARGB4444_Premultiplied,
++ WL_SHM_FORMAT_XBGR8888, //Format_RGBX8888,
++ WL_SHM_FORMAT_ABGR8888, //Format_RGBA8888,
++ WL_SHM_FORMAT_ABGR8888, //Format_RGBA8888_Premultiplied,
++ WL_SHM_FORMAT_XBGR2101010, //Format_BGR30,
++ WL_SHM_FORMAT_ABGR2101010, //Format_A2BGR30_Premultiplied,
++ WL_SHM_FORMAT_XRGB2101010, //Format_RGB30,
++ WL_SHM_FORMAT_ARGB2101010, //Format_A2RGB30_Premultiplied,
++ WL_SHM_FORMAT_C8, //Format_Alpha8,
++ WL_SHM_FORMAT_C8, //Format_Grayscale8,
++ wl_shm_format(INT_MIN), //Format_RGBX64,
++ wl_shm_format(INT_MIN), //Format_RGBA64,
++ wl_shm_format(INT_MIN), //Format_RGBA64_Premultiplied,
++ wl_shm_format(INT_MIN), //Format_Grayscale16,
++ WL_SHM_FORMAT_BGR888, //Format_BGR888
++
++ };
++ const size_t size = sizeof(formats_array) / sizeof(*formats_array);
++ return Array(size, formats_array);
++ }
++ };
++
++ wl_shm_format QWaylandSharedMemoryFormatHelper::fromQImageFormat(QImage::Format format)
++ {
++ Array array = getData();
++ if (array.size <= size_t(format))
++ return wl_shm_format(INT_MIN);
++ return array.data[format];
++ }
++
++ QT_END_NAMESPACE
++
++ #endif //QWAYLANDSHAREDMEMORYFORMATHELPER_H