1// Copyright (C) 2015 Pier Luigi Fiorini <pierluigi.fiorini@gmail.com>
2// Copyright (C) 2016 The Qt Company Ltd.
3// Copyright (C) 2016 Pelagicore AG
4// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
5
6#ifndef QEGLFSKMSGBMSCREEN_H
7#define QEGLFSKMSGBMSCREEN_H
8
9//
10// W A R N I N G
11// -------------
12//
13// This file is not part of the Qt API. It exists purely as an
14// implementation detail. This header file may change from version to
15// version without notice, or even be removed.
16//
17// We mean it.
18//
19
20#include <private/qeglfskmsscreen_p.h>
21#include <QMutex>
22#include <QWaitCondition>
23
24#include <gbm.h>
25
26QT_BEGIN_NAMESPACE
27
28class QEglFSKmsGbmCursor;
29
30class Q_EGLFS_EXPORT QEglFSKmsGbmScreen : public QEglFSKmsScreen
31{
32public:
33 QEglFSKmsGbmScreen(QEglFSKmsDevice *device, const QKmsOutput &output, bool headless);
34 ~QEglFSKmsGbmScreen();
35
36 QPlatformCursor *cursor() const override;
37
38 gbm_surface *createSurface(EGLConfig eglConfig);
39 void resetSurface();
40
41 void initCloning(QPlatformScreen *screenThisScreenClones,
42 const QList<QPlatformScreen *> &screensCloningThisScreen);
43
44 void waitForFlip() override;
45
46 virtual void flip();
47 virtual void updateFlipStatus();
48
49 virtual uint32_t gbmFlags() { return GBM_BO_USE_SCANOUT | GBM_BO_USE_RENDERING; }
50
51protected:
52 void flipFinished();
53 void ensureModeSet(uint32_t fb);
54 void cloneDestFlipFinished(QEglFSKmsGbmScreen *cloneDestScreen);
55 void waitForFlipWithEventReader(QEglFSKmsGbmScreen *screen);
56 static void nonThreadedPageFlipHandler(int fd,
57 unsigned int sequence,
58 unsigned int tv_sec,
59 unsigned int tv_usec,
60 void *user_data);
61
62 gbm_surface *m_gbm_surface;
63
64 gbm_bo *m_gbm_bo_current;
65 gbm_bo *m_gbm_bo_next;
66 bool m_flipPending;
67
68 QMutex m_flipMutex;
69 QWaitCondition m_flipCond;
70 static QMutex m_nonThreadedFlipMutex;
71
72 QScopedPointer<QEglFSKmsGbmCursor> m_cursor;
73
74 struct FrameBuffer {
75 uint32_t fb = 0;
76 };
77 static void bufferDestroyedHandler(gbm_bo *bo, void *data);
78 FrameBuffer *framebufferForBufferObject(gbm_bo *bo);
79
80 QEglFSKmsGbmScreen *m_cloneSource;
81 struct CloneDestination {
82 QEglFSKmsGbmScreen *screen = nullptr;
83 bool cloneFlipPending = false;
84 };
85 QList<CloneDestination> m_cloneDests;
86
87 bool needsNewModeSetForNextFb = false;
88};
89
90QT_END_NAMESPACE
91
92#endif // QEGLFSKMSGBMSCREEN_H
93

source code of qtbase/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms/qeglfskmsgbmscreen_p.h