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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the plugins of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QWAYLANDSHAREDMEMORYFORMATHELPER_H
#define QWAYLANDSHAREDMEMORYFORMATHELPER_H
#include <QtGui/QImage>
//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);
static inline QVector<wl_shm_format> supportedWaylandFormats();
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,
};
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];
}
QImage::Format QWaylandSharedMemoryFormatHelper::fromWaylandShmFormat(wl_shm_format format)
{
Array array = getData();
for (size_t i = 0; i < array.size; i++) {
if (array.data[i] == format)
return QImage::Format(i);
}
return QImage::Format_Invalid;
}
QVector<wl_shm_format> QWaylandSharedMemoryFormatHelper::supportedWaylandFormats()
{
QVector<wl_shm_format> retFormats;
Array array = getData();
for (size_t i = 0; i < array.size; i++) {
if (int(array.data[i]) != INT_MIN
&& !retFormats.contains(array.data[i])) {
retFormats.append(array.data[i]);
}
}
return retFormats;
}
QT_END_NAMESPACE
#endif //QWAYLANDSHAREDMEMORYFORMATHELPER_H
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