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
141
|
/****************************************************************************
**
** This file is part of QtCompositor**
**
** Copyright © 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
**
** Contact: Nokia Corporation qt-info@nokia.com
**
** You may use this file under the terms of the BSD license as follows:
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
**
** Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
**
** Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
**
** Neither the name of Nokia Corporation and its Subsidiary(-ies) nor the
** names of its contributors may be used to endorse or promote products
** derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**
****************************************************************************/
#include "wlshmbuffer.h"
#include "wldisplay.h"
#include "wlcompositor.h"
#include <QtCore/QDebug>
#include <sys/mman.h>
namespace Wayland {
ShmBuffer::ShmBuffer(struct wl_buffer *buffer)
: m_buffer(buffer)
{
m_buffer->user_data = this;
m_data = wl_shm_buffer_get_data(m_buffer);
m_stride = wl_shm_buffer_get_stride(m_buffer);
damage();
}
ShmBuffer::~ShmBuffer()
{
}
QImage ShmBuffer::image() const
{
return m_image;
}
QSize ShmBuffer::size() const
{
return QSize(m_buffer->width, m_buffer->height);
}
void ShmBuffer::damage()
{
QImage::Format imageFormat = QImage::Format_Invalid;
imageFormat = QImage::Format_ARGB32_Premultiplied;
m_image = QImage(static_cast<uchar *>(m_data),m_buffer->width, m_buffer->height,m_stride,imageFormat);
}
static ShmHandler *handlerInstance;
ShmHandler::ShmHandler(Display *display)
: m_display(display)
{
handlerInstance = this;
m_shm = wl_shm_init(m_display->handle(),&shm_callbacks);
}
ShmHandler::~ShmHandler()
{
wl_shm_finish(m_shm);
}
struct wl_shm_callbacks ShmHandler::shm_callbacks = {
buffer_created_callback,
buffer_damaged_callback,
buffer_destroyed_callback
};
void ShmHandler::buffer_created_callback(struct wl_buffer *buffer)
{
ShmBuffer *newBuffer = new ShmBuffer(buffer);
Q_UNUSED(newBuffer);
}
void ShmHandler::buffer_damaged_callback(struct wl_buffer *buffer,
int32_t x, int32_t y,
int32_t width, int32_t height)
{
Q_UNUSED(buffer);
Q_UNUSED(x);
Q_UNUSED(y);
Q_UNUSED(width);
Q_UNUSED(height);
//damage has the responsibillity to update the QImage
//for now we just recrate the entire QImage as we need a new
//hash key for texture uploads
static_cast<ShmBuffer *>(buffer->user_data)->damage();
}
void ShmHandler::buffer_destroyed_callback(struct wl_buffer *buffer)
{
ShmBuffer *shmbuf = static_cast<ShmBuffer *>(buffer->user_data);
for (int i = 0; i < handlerInstance->m_extraCallbacks.count(); ++i)
handlerInstance->m_extraCallbacks.at(i)(shmbuf);
delete shmbuf;
}
void ShmHandler::addDestroyCallback(DestroyCallback callback)
{
if (!m_extraCallbacks.contains(callback))
m_extraCallbacks.append(callback);
}
}
|
