1/****************************************************************************
2**
3** Copyright (C) 2019 The Qt Company Ltd.
4** Contact: https://www.qt.io/licensing/
5**
6** This file is part of the plugins of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:LGPL$
9** Commercial License Usage
10** Licensees holding valid commercial Qt licenses may use this file in
11** accordance with the commercial license agreement provided with the
12** Software or, alternatively, in accordance with the terms contained in
13** a written agreement between you and The Qt Company. For licensing terms
14** and conditions see https://www.qt.io/terms-conditions. For further
15** information use the contact form at https://www.qt.io/contact-us.
16**
17** GNU Lesser General Public License Usage
18** Alternatively, this file may be used under the terms of the GNU Lesser
19** General Public License version 3 as published by the Free Software
20** Foundation and appearing in the file LICENSE.LGPL3 included in the
21** packaging of this file. Please review the following information to
22** ensure the GNU Lesser General Public License version 3 requirements
23** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
24**
25** GNU General Public License Usage
26** Alternatively, this file may be used under the terms of the GNU
27** General Public License version 2.0 or (at your option) the GNU General
28** Public license version 3 or any later version approved by the KDE Free
29** Qt Foundation. The licenses are as published by the Free Software
30** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
31** included in the packaging of this file. Please review the following
32** information to ensure the GNU General Public License requirements will
33** be met: https://www.gnu.org/licenses/gpl-2.0.html and
34** https://www.gnu.org/licenses/gpl-3.0.html.
35**
36** $QT_END_LICENSE$
37**
38****************************************************************************/
39
40#ifndef QEGLFSKKMSEVENTREADER_H
41#define QEGLFSKKMSEVENTREADER_H
42
43//
44// W A R N I N G
45// -------------
46//
47// This file is not part of the Qt API. It exists purely as an
48// implementation detail. This header file may change from version to
49// version without notice, or even be removed.
50//
51// We mean it.
52//
53
54#include "private/qeglfsglobal_p.h"
55#include <QObject>
56#include <QThread>
57#include <QMutex>
58#include <QWaitCondition>
59
60QT_BEGIN_NAMESPACE
61
62class QEglFSKmsDevice;
63
64struct QEglFSKmsEventHost : public QObject
65{
66 struct PendingFlipWait {
67 void *key;
68 QMutex *mutex;
69 QWaitCondition *cond;
70 };
71
72 static const int MAX_FLIPS = 32;
73 void *completedFlips[MAX_FLIPS] = {};
74 QEglFSKmsEventHost::PendingFlipWait pendingFlipWaits[MAX_FLIPS] = {};
75
76 bool event(QEvent *event) override;
77 void updateStatus();
78 void handlePageFlipCompleted(void *key);
79};
80
81class QEglFSKmsEventReaderThread : public QThread
82{
83public:
84 QEglFSKmsEventReaderThread(int fd) : m_fd(fd) { }
85 void run() override;
86 QEglFSKmsEventHost *eventHost() { return &m_ev; }
87
88private:
89 int m_fd;
90 QEglFSKmsEventHost m_ev;
91};
92
93class Q_EGLFS_EXPORT QEglFSKmsEventReader
94{
95public:
96 ~QEglFSKmsEventReader();
97
98 void create(QEglFSKmsDevice *device);
99 void destroy();
100
101 void startWaitFlip(void *key, QMutex *mutex, QWaitCondition *cond);
102
103private:
104 QEglFSKmsDevice *m_device = nullptr;
105 QEglFSKmsEventReaderThread *m_thread = nullptr;
106};
107
108QT_END_NAMESPACE
109
110#endif // QEGLFSKKMSEVENTREADER_H
111