Differential D18570 Diff 51224 plugins/platforms/drm/egl_stream_backend.h

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plugins/platforms/drm/egl_stream_backend.h

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1​/********************************************************************
2​ KWin - the KDE window manager
3​ This file is part of the KDE project.
4​
5​Copyright (C) 2019 NVIDIA Inc.
6​
7​This program is free software; you can redistribute it and/or modify
8​it under the terms of the GNU General Public License as published by
9​the Free Software Foundation; either version 2 of the License, or
10​(at your option) any later version.
11​
12​This program is distributed in the hope that it will be useful,
13​but WITHOUT ANY WARRANTY; without even the implied warranty of
14​MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15​GNU General Public License for more details.
16​
17​You should have received a copy of the GNU General Public License
18​along with this program. If not, see <http://www.gnu.org/licenses/>.
19​*********************************************************************/
20​#ifndef KWIN_EGL_STREAM_BACKEND_H
21​#define KWIN_EGL_STREAM_BACKEND_H
22​#include "abstract_egl_backend.h"
23​#include <KWayland/Server/surface_interface.h>
24​#include <KWayland/Server/eglstream_controller_interface.h>
25​#include <wayland-server-core.h>
26​
27​namespace KWin
28​{
29​
30​class DrmBackend;
31​class DrmOutput;
32​class DrmBuffer;
33​class ShellClient;
34​
35​/**
36​ * @brief OpenGL Backend using Egl with an EGLDevice.
37​ **/
38​class EglStreamBackend : public AbstractEglBackend
39​{
40​ Q_OBJECT
41​public:
42​ EglStreamBackend(DrmBackend *b);
43​ virtual ~EglStreamBackend();
44​ void screenGeometryChanged(const QSize &size) override;
45​ SceneOpenGLTexturePrivate *createBackendTexture(SceneOpenGLTexture *texture) override;
46​ QRegion prepareRenderingFrame() override;
47​ void endRenderingFrame(const QRegion &renderedRegion, const QRegion &damagedRegion) override;
48​ void endRenderingFrameForScreen(int screenId, const QRegion &damage, const QRegion &damagedRegion) override;
49​ bool usesOverlayWindow() const override;
50​ bool perScreenRendering() const override;
51​ QRegion prepareRenderingForScreen(int screenId) override;
52​ void init() override;
53​
54​protected:
55​ void present() override;
56​ void cleanupSurfaces() override;
57​
58​private:
59​ bool initializeEgl();
60​ bool initBufferConfigs();
61​ bool initRenderingContext();
62​ struct StreamTexture
63​ {
64​ EGLStreamKHR stream;
65​ GLuint textures[2];
66​ bool swap;
67​ };
68​ StreamTexture *lookupStreamTexture(wl_resource *surface);
69​ void attachStreamConsumer(KWayland::Server::SurfaceInterface *surface,
70​ void *eglStream);
71​ struct Output
72​ {
73​ DrmOutput *output = nullptr;
74​ DrmBuffer *buffer = nullptr;
75​ EGLSurface eglSurface = EGL_NO_SURFACE;
76​ EGLStreamKHR eglStream = EGL_NO_STREAM_KHR;
77​ };
78​ bool resetOutput(Output &output, DrmOutput *drmOutput);
79​ bool makeContextCurrent(const Output &output);
80​ void presentOnOutput(Output &output);
81​ void cleanupOutput(const Output &output);
82​ void createOutput(DrmOutput *output);
83​
84​ DrmBackend *m_backend;
85​ QVector<Output> m_outputs;
86​ KWayland::Server::EglStreamControllerInterface *m_eglStreamControllerInterface;
87​ QHash<wl_resource *, StreamTexture> m_streamTextures;
romanggUnsubmitted
Done

Instead of taking the wl_resource pointer as key, use the KWayland::Server::SurfaceInterface pointer.

romangg: Instead of taking the wl_resource pointer as key, use the KWayland::Server::SurfaceInterface…
88​
89​ friend class EglStreamTexture;
90​};
91​
92​/**
93​ * @brief External texture bound to an EGLStreamKHR.
94​ **/
95​class EglStreamTexture : public AbstractEglTexture
96​{
97​public:
98​ virtual ~EglStreamTexture();
99​ bool loadTexture(WindowPixmap *pixmap) override;
100​ void updateTexture(WindowPixmap *pixmap) override;
101​
102​private:
103​ EglStreamTexture(SceneOpenGLTexture *texture, EglStreamBackend *backend);
104​ bool acquireStreamFrame(EGLStreamKHR stream);
105​ void createFbo();
106​ void copyExternalTexture(GLuint tex);
107​ EglStreamBackend *m_backend;
108​ GLuint m_fbo, m_rbo;
109​ GLenum m_format;
110​ friend class EglStreamBackend;
111​};
112​
113​} // namespace
114​
115​#endif