1 /*
2 * Copyright (C) 2019 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "host/libs/wayland/wayland_server.h"
18
19 #include <android-base/logging.h>
20
21 #include <wayland-server-core.h>
22 #include <wayland-server-protocol.h>
23
24 #include "host/libs/wayland/wayland_compositor.h"
25 #include "host/libs/wayland/wayland_dmabuf.h"
26 #include "host/libs/wayland/wayland_seat.h"
27 #include "host/libs/wayland/wayland_shell.h"
28 #include "host/libs/wayland/wayland_subcompositor.h"
29 #include "host/libs/wayland/wayland_surface.h"
30 #include "host/libs/wayland/wayland_utils.h"
31
32 namespace wayland {
33 namespace internal {
34
35 struct WaylandServerState {
36 struct wl_display* display_ = nullptr;
37
38 Surface surface_;
39 };
40
41 } // namespace internal
42
WaylandServer(int wayland_socket_fd)43 WaylandServer::WaylandServer(int wayland_socket_fd) {
44 server_thread_ =
45 std::thread(
46 [this, wayland_socket_fd]() {
47 ServerLoop(wayland_socket_fd);
48 });
49
50 std::unique_lock<std::mutex> lock(server_ready_mutex_);
51 server_ready_cv_.wait(lock, [&]{return server_ready_; });
52 }
53
~WaylandServer()54 WaylandServer::~WaylandServer() {
55 wl_display_terminate(server_state_->display_);
56 server_thread_.join();
57 }
58
ServerLoop(int fd)59 void WaylandServer::ServerLoop(int fd) {
60 server_state_.reset(new internal::WaylandServerState());
61
62 server_state_->display_ = wl_display_create();
63 CHECK(server_state_->display_ != nullptr)
64 << "Failed to start WaylandServer: failed to create display";
65
66 if (fd < 0) {
67 const char* socket = wl_display_add_socket_auto(server_state_->display_);
68 CHECK(socket != nullptr)
69 << "Failed to start WaylandServer: failed to create socket";
70
71 LOG(INFO) << "WaylandServer running on socket " << socket;
72 } else {
73 CHECK(wl_display_add_socket_fd(server_state_->display_, fd) == 0)
74 << "Failed to start WaylandServer: failed to use fd " << fd;
75
76 LOG(INFO) << "WaylandServer running on socket " << fd;
77 }
78
79 wl_display_init_shm(server_state_->display_);
80
81 BindCompositorInterface(server_state_->display_, &server_state_->surface_);
82 BindDmabufInterface(server_state_->display_);
83 BindSubcompositorInterface(server_state_->display_);
84 BindSeatInterface(server_state_->display_);
85 BindShellInterface(server_state_->display_);
86
87 {
88 std::lock_guard<std::mutex> lock(server_ready_mutex_);
89 server_ready_ = true;
90 }
91 server_ready_cv_.notify_one();
92
93 wl_display_run(server_state_->display_);
94 wl_display_destroy(server_state_->display_);
95 }
96
OnFrameAfter(uint32_t frame_number,const FrameCallback & frame_callback)97 std::future<void> WaylandServer::OnFrameAfter(
98 uint32_t frame_number,
99 const FrameCallback& frame_callback) {
100 // Wraps the given callback in a callback that can be waited on using
101 // std::future.
102 Surface::FrameCallbackPackaged packaged([&frame_callback](std::uint32_t frame_number,
103 std::uint8_t* frame_pixels){
104 frame_callback(frame_number, frame_pixels);
105 });
106
107 std::future<void> frame_callback_complete = packaged.get_future();
108
109 server_state_->surface_.OnFrameAfter(frame_number, std::move(packaged));
110 return frame_callback_complete;
111 }
112
113 } // namespace wayland