1// Copyright (C) 2020 The Qt Company Ltd.
2// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
3
4#ifndef QWAYLANDSHAREDMEMORYFORMATHELPER_H
5#define QWAYLANDSHAREDMEMORYFORMATHELPER_H
6
7//
8// W A R N I N G
9// -------------
10//
11// This file is not part of the Qt API. It exists purely as an
12// implementation detail. This header file may change from version to
13// version without notice, or even be removed.
14//
15// We mean it.
16//
17
18#include <QtGui/QImage>
19#include <QtCore/private/qglobal_p.h>
20
21//the correct protocol header for the wayland server or wayland client has to be
22//included before this file is included
23
24QT_BEGIN_NAMESPACE
25
26class QWaylandSharedMemoryFormatHelper
27{
28public:
29 static inline wl_shm_format fromQImageFormat(QImage::Format format);
30 static inline QImage::Format fromWaylandShmFormat(wl_shm_format format)
31 {
32 switch (format) {
33 case WL_SHM_FORMAT_XRGB8888: return QImage::Format_RGB32;
34 case WL_SHM_FORMAT_ARGB8888: return QImage::Format_ARGB32_Premultiplied;
35 case WL_SHM_FORMAT_RGB565: return QImage::Format_RGB16;
36 case WL_SHM_FORMAT_XRGB1555: return QImage::Format_RGB555;
37 case WL_SHM_FORMAT_RGB888: return QImage::Format_RGB888;
38 case WL_SHM_FORMAT_BGR888: return QImage::Format_BGR888;
39 case WL_SHM_FORMAT_XRGB4444: return QImage::Format_RGB444;
40 case WL_SHM_FORMAT_ARGB4444: return QImage::Format_ARGB4444_Premultiplied;
41 case WL_SHM_FORMAT_XBGR8888: return QImage::Format_RGBX8888;
42 case WL_SHM_FORMAT_ABGR8888: return QImage::Format_RGBA8888_Premultiplied;
43 case WL_SHM_FORMAT_XBGR2101010: return QImage::Format_BGR30;
44 case WL_SHM_FORMAT_ABGR2101010: return QImage::Format_A2BGR30_Premultiplied;
45 case WL_SHM_FORMAT_XRGB2101010: return QImage::Format_RGB30;
46 case WL_SHM_FORMAT_ARGB2101010: return QImage::Format_A2RGB30_Premultiplied;
47 case WL_SHM_FORMAT_C8: return QImage::Format_Alpha8;
48 default: return QImage::Format_Invalid;
49 }
50 }
51
52private:
53//IMPLEMENTATION (which has to be inline in the header because of the include trick)
54 struct Array
55 {
56 Array(const size_t size, const wl_shm_format *data)
57 : size(size)
58 , data(data)
59 { }
60 const size_t size;
61 const wl_shm_format *data = nullptr;
62 };
63
64 static const Array getData()
65 {
66 static wl_shm_format formats_array[] = {
67 wl_shm_format(INT_MIN), //Format_Invalid,
68 wl_shm_format(INT_MIN), //Format_Mono,
69 wl_shm_format(INT_MIN), //Format_MonoLSB,
70 wl_shm_format(INT_MIN), //Format_Indexed8,
71 WL_SHM_FORMAT_XRGB8888, //Format_RGB32,
72 WL_SHM_FORMAT_ARGB8888, //Format_ARGB32,
73 WL_SHM_FORMAT_ARGB8888, //Format_ARGB32_Premultiplied,
74 WL_SHM_FORMAT_RGB565, //Format_RGB16,
75 wl_shm_format(INT_MIN), //Format_ARGB8565_Premultiplied,
76 wl_shm_format(INT_MIN), //Format_RGB666,
77 wl_shm_format(INT_MIN), //Format_ARGB6666_Premultiplied,
78 WL_SHM_FORMAT_XRGB1555, //Format_RGB555,
79 wl_shm_format(INT_MIN), //Format_ARGB8555_Premultiplied,
80 WL_SHM_FORMAT_RGB888, //Format_RGB888,
81 WL_SHM_FORMAT_XRGB4444, //Format_RGB444,
82 WL_SHM_FORMAT_ARGB4444, //Format_ARGB4444_Premultiplied,
83 WL_SHM_FORMAT_XBGR8888, //Format_RGBX8888,
84 WL_SHM_FORMAT_ABGR8888, //Format_RGBA8888,
85 WL_SHM_FORMAT_ABGR8888, //Format_RGBA8888_Premultiplied,
86 WL_SHM_FORMAT_XBGR2101010, //Format_BGR30,
87 WL_SHM_FORMAT_ABGR2101010, //Format_A2BGR30_Premultiplied,
88 WL_SHM_FORMAT_XRGB2101010, //Format_RGB30,
89 WL_SHM_FORMAT_ARGB2101010, //Format_A2RGB30_Premultiplied,
90 WL_SHM_FORMAT_C8, //Format_Alpha8,
91 WL_SHM_FORMAT_C8, //Format_Grayscale8,
92 wl_shm_format(INT_MIN), //Format_RGBX64,
93 wl_shm_format(INT_MIN), //Format_RGBA64,
94 wl_shm_format(INT_MIN), //Format_RGBA64_Premultiplied,
95 wl_shm_format(INT_MIN), //Format_Grayscale16,
96 WL_SHM_FORMAT_BGR888, //Format_BGR888
97
98 };
99 const size_t size = sizeof(formats_array) / sizeof(*formats_array);
100 return Array(size, formats_array);
101 }
102};
103
104wl_shm_format QWaylandSharedMemoryFormatHelper::fromQImageFormat(QImage::Format format)
105{
106 Array array = getData();
107 if (array.size <= size_t(format))
108 return wl_shm_format(INT_MIN);
109 return array.data[format];
110}
111
112QT_END_NAMESPACE
113
114#endif //QWAYLANDSHAREDMEMORYFORMATHELPER_H
115

source code of qtbase/src/plugins/platforms/wayland/shared/qwaylandsharedmemoryformathelper_p.h