1 /*
2 * Copyright (C) 2017 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 "vsoc_input_service.h"
18
19 #include <linux/input.h>
20 #include <linux/uinput.h>
21
22 #include <thread>
23
24 #include "log/log.h"
25
26 #include "common/vsoc/lib/screen_region_view.h"
27 #include "common/vsoc/lib/input_events_region_view.h"
28
29 using vsoc::screen::ScreenRegionView;
30 using vsoc::input_events::InputEvent;
31 using vsoc::input_events::InputEventsRegionView;
32 using vsoc_input_service::VirtualDeviceBase;
33 using vsoc_input_service::VirtualKeyboard;
34 using vsoc_input_service::VirtualPowerButton;
35 using vsoc_input_service::VirtualTouchScreen;
36 using vsoc_input_service::VSoCInputService;
37
38 namespace {
39
EventLoop(std::shared_ptr<VirtualDeviceBase> device,std::function<int (InputEvent *,int)> next_events)40 void EventLoop(std::shared_ptr<VirtualDeviceBase> device,
41 std::function<int(InputEvent*, int)> next_events) {
42 while (1) {
43 InputEvent events[InputEventsRegionView::kMaxEventsPerPacket];
44 int count = next_events(events, InputEventsRegionView::kMaxEventsPerPacket);
45 if (count <= 0) {
46 SLOGE("Error getting events from the queue: Maybe check packet size");
47 continue;
48 }
49 for (int i = 0; i < count; ++i) {
50 device->EmitEvent(events[i].type, events[i].code, events[i].value);
51 }
52 }
53 }
54
55 } // namespace
56
SetUpDevices()57 bool VSoCInputService::SetUpDevices() {
58 virtual_power_button_.reset(new VirtualPowerButton());
59 if (!virtual_power_button_->SetUp()) {
60 return false;
61 }
62 virtual_keyboard_.reset(new VirtualKeyboard());
63 if (!virtual_keyboard_->SetUp()) {
64 return false;
65 }
66
67 auto screen_view = ScreenRegionView::GetInstance();
68 if (!screen_view) {
69 SLOGE("Failed to open framebuffer broadcast region");
70 return false;
71 }
72
73 virtual_touchscreen_.reset(
74 new VirtualTouchScreen(screen_view->x_res(), screen_view->y_res()));
75 if (!virtual_touchscreen_->SetUp()) {
76 return false;
77 }
78
79 return true;
80 }
81
ProcessEvents()82 bool VSoCInputService::ProcessEvents() {
83 auto input_events_rv = InputEventsRegionView::GetInstance();
84 // TODO(jemoreira): Post available devices to region
85 auto worker = input_events_rv->StartWorker();
86
87 // Start device threads
88 std::thread screen_thread([this]() {
89 EventLoop(
90 virtual_touchscreen_, [](InputEvent* event_buffer, int max_events) {
91 return InputEventsRegionView::GetInstance()->GetScreenEventsOrWait(
92 event_buffer, max_events);
93 });
94 });
95 std::thread keyboard_thread([this]() {
96 EventLoop(virtual_keyboard_, [](InputEvent* event_buffer, int max_events) {
97 return InputEventsRegionView::GetInstance()->GetKeyboardEventsOrWait(
98 event_buffer, max_events);
99 });
100 });
101 std::thread button_thread([this]() {
102 EventLoop(virtual_power_button_,
103 [](InputEvent* event_buffer, int max_events) {
104 return InputEventsRegionView::GetInstance()
105 ->GetPowerButtonEventsOrWait(event_buffer, max_events);
106 });
107 });
108
109 screen_thread.join();
110 keyboard_thread.join();
111 button_thread.join();
112
113 // Should never return
114 return false;
115 }
116