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Add a SHM format converter class

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This class helps keeing one lookuptable for server and client
It relies on that wayland-(client|server)-protocol.h being included
before the qwaylandshmformathelper.h

Change-Id: I12158126a80c8fef5c52427d35792f33716020f1
Reviewed-by: Giulio Camuffo <giulio.camuffo@jollamobile.com>
This commit is contained in:
Jorgen Lind 2014-12-25 20:42:56 +01:00 committed by Jørgen Lind
parent ce491e5dd0
commit 1b6d20e463
2 changed files with 143 additions and 1 deletions
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6
src/plugins/platforms/wayland/qwaylandshmbackingstore.cpp
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@ -49,6 +49,9 @@
#include <QMutexLocker>
#include <wayland-client.h>
#include <wayland-client-protocol.h>
#include "qwaylandshmformathelper.h"
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
@ -89,12 +92,13 @@ QWaylandShmBuffer::QWaylandShmBuffer(QWaylandDisplay *display,
return;
}
wl_shm_format wl_format = QWaylandShmFormatHelper::fromQImageFormat(format);
mImage = QImage(data, size.width(), size.height(), stride, format);
mImage.setDevicePixelRatio(qreal(scale));
mShmPool = wl_shm_create_pool(display->shm(), fd, alloc);
mBuffer = wl_shm_pool_create_buffer(mShmPool,0, size.width(), size.height(),
stride, WL_SHM_FORMAT_ARGB8888);
stride, wl_format);
close(fd);
}

138
src/plugins/platforms/wayland/shared/qwaylandshmformathelper.h Normal file
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@ -0,0 +1,138 @@
/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** 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 Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/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 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QWAYLANDSHMFORMATHELPER_H
#define QWAYLANDSHMFORMATHELPER_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 QWaylandShmFormatHelper
{
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;
};
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_ARGB2101010, //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 QWaylandShmFormatHelper::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 QWaylandShmFormatHelper::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> QWaylandShmFormatHelper::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 //QWAYLANDSHMFORMATHELPER_H