1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
|
/****************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtWaylandCompositor module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:GPL$
** 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 General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) 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.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-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "shmserverbufferintegration.h"
#include <QtGui/QOpenGLContext>
#include <QtGui/QOpenGLTexture>
#include <QtCore/QSharedMemory>
#include <QtCore/QDebug>
QT_BEGIN_NAMESPACE
ShmServerBuffer::ShmServerBuffer(ShmServerBufferIntegration *integration, const QImage &qimage, QtWayland::ServerBuffer::Format format)
: QtWayland::ServerBuffer(qimage.size(),format)
, m_integration(integration)
, m_width(qimage.width())
, m_height(qimage.height())
, m_bpl(qimage.bytesPerLine())
{
m_format = format;
switch (m_format) {
case RGBA32:
m_shm_format = QtWaylandServer::qt_shm_emulation_server_buffer::format_RGBA32;
break;
case A8:
m_shm_format = QtWaylandServer::qt_shm_emulation_server_buffer::format_A8;
break;
default:
qWarning("ShmServerBuffer: unsupported format");
m_shm_format = QtWaylandServer::qt_shm_emulation_server_buffer::format_RGBA32;
break;
}
QString key = "qt_shm_emulation_" + QString::number(qimage.cacheKey());
m_shm = new QSharedMemory(key);
qsizetype shm_size = qimage.sizeInBytes();
bool ok = m_shm->create(shm_size) && m_shm->lock();
if (ok) {
memcpy(m_shm->data(), qimage.constBits(), shm_size);
m_shm->unlock();
} else {
qWarning() << "Could not create shared memory" << key << shm_size;
}
}
ShmServerBuffer::~ShmServerBuffer()
{
delete m_shm;
}
struct ::wl_resource *ShmServerBuffer::resourceForClient(struct ::wl_client *client)
{
auto *bufferResource = resourceMap().value(client);
if (!bufferResource) {
auto integrationResource = m_integration->resourceMap().value(client);
if (!integrationResource) {
qWarning("ShmServerBuffer::resourceForClient: Trying to get resource for ServerBuffer. But client is not bound to the shm_emulation interface");
return nullptr;
}
struct ::wl_resource *shm_integration_resource = integrationResource->handle;
Resource *resource = add(client, 1);
m_integration->send_server_buffer_created(shm_integration_resource, resource->handle, m_shm->key(), m_width, m_height, m_bpl, m_shm_format);
return resource->handle;
}
return bufferResource->handle;
}
bool ShmServerBuffer::bufferInUse()
{
return resourceMap().count() > 0;
}
QOpenGLTexture *ShmServerBuffer::toOpenGlTexture()
{
if (!m_texture) {
qWarning("ShmServerBuffer::toOpenGlTexture: no texture defined");
}
return m_texture;
}
ShmServerBufferIntegration::ShmServerBufferIntegration()
{
}
ShmServerBufferIntegration::~ShmServerBufferIntegration()
{
}
void ShmServerBufferIntegration::initializeHardware(QWaylandCompositor *compositor)
{
Q_ASSERT(QGuiApplication::platformNativeInterface());
QtWaylandServer::qt_shm_emulation_server_buffer::init(compositor->display(), 1);
}
bool ShmServerBufferIntegration::supportsFormat(QtWayland::ServerBuffer::Format format) const
{
switch (format) {
case QtWayland::ServerBuffer::RGBA32:
return true;
case QtWayland::ServerBuffer::A8:
return true;
default:
return false;
}
}
QtWayland::ServerBuffer *ShmServerBufferIntegration::createServerBufferFromImage(const QImage &qimage, QtWayland::ServerBuffer::Format format)
{
return new ShmServerBuffer(this, qimage, format);
}
QT_END_NAMESPACE
|
