1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
|
/*
* Copyright (C) 2020 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "UinputDevice.h"
#include <android-base/stringprintf.h>
namespace android {
// --- UinputDevice ---
UinputDevice::UinputDevice(const char* name) : mName(name) {}
UinputDevice::~UinputDevice() {
if (ioctl(mDeviceFd, UI_DEV_DESTROY)) {
ALOGE("Error while destroying uinput device: %s", strerror(errno));
}
mDeviceFd.reset();
}
void UinputDevice::init() {
mDeviceFd = android::base::unique_fd(open("/dev/uinput", O_WRONLY | O_NONBLOCK));
if (mDeviceFd < 0) {
FAIL() << "Can't open /dev/uinput :" << strerror(errno);
}
struct uinput_user_dev device = {};
strlcpy(device.name, mName, UINPUT_MAX_NAME_SIZE);
device.id.bustype = BUS_USB;
device.id.vendor = 0x01;
device.id.product = 0x01;
device.id.version = 1;
ASSERT_NO_FATAL_FAILURE(configureDevice(mDeviceFd, &device));
if (write(mDeviceFd, &device, sizeof(device)) < 0) {
FAIL() << "Could not write uinput_user_dev struct into uinput file descriptor: "
<< strerror(errno);
}
if (ioctl(mDeviceFd, UI_DEV_CREATE)) {
FAIL() << "Error in ioctl : UI_DEV_CREATE: " << strerror(errno);
}
}
void UinputDevice::injectEvent(uint16_t type, uint16_t code, int32_t value) {
struct input_event event = {};
event.type = type;
event.code = code;
event.value = value;
event.time = {}; // uinput ignores the timestamp
if (write(mDeviceFd, &event, sizeof(input_event)) < 0) {
std::string msg = base::StringPrintf("Could not write event %" PRIu16 " %" PRIu16
" with value %" PRId32 " : %s",
type, code, value, strerror(errno));
ALOGE("%s", msg.c_str());
FAIL() << msg.c_str();
}
}
// --- UinputKeyboard ---
UinputKeyboard::UinputKeyboard(std::initializer_list<int> keys)
: UinputDevice(UinputKeyboard::KEYBOARD_NAME), mKeys(keys.begin(), keys.end()) {}
void UinputKeyboard::configureDevice(int fd, uinput_user_dev* device) {
// enable key press/release event
if (ioctl(fd, UI_SET_EVBIT, EV_KEY)) {
FAIL() << "Error in ioctl : UI_SET_EVBIT : EV_KEY: " << strerror(errno);
}
// enable set of KEY events
std::for_each(mKeys.begin(), mKeys.end(), [fd](int key) {
if (ioctl(fd, UI_SET_KEYBIT, key)) {
FAIL() << "Error in ioctl : UI_SET_KEYBIT : " << key << " : " << strerror(errno);
}
});
// enable synchronization event
if (ioctl(fd, UI_SET_EVBIT, EV_SYN)) {
FAIL() << "Error in ioctl : UI_SET_EVBIT : EV_SYN: " << strerror(errno);
}
}
void UinputKeyboard::pressKey(int key) {
if (mKeys.find(key) == mKeys.end()) {
FAIL() << mName << ": Cannot inject key press: Key not found: " << key;
}
injectEvent(EV_KEY, key, 1);
injectEvent(EV_SYN, SYN_REPORT, 0);
}
void UinputKeyboard::releaseKey(int key) {
if (mKeys.find(key) == mKeys.end()) {
FAIL() << mName << ": Cannot inject key release: Key not found: " << key;
}
injectEvent(EV_KEY, key, 0);
injectEvent(EV_SYN, SYN_REPORT, 0);
}
void UinputKeyboard::pressAndReleaseKey(int key) {
pressKey(key);
releaseKey(key);
}
// --- UinputHomeKey ---
UinputHomeKey::UinputHomeKey() : UinputKeyboard({KEY_HOME}) {}
void UinputHomeKey::pressAndReleaseHomeKey() {
pressAndReleaseKey(KEY_HOME);
}
// --- UinputSteamController
UinputSteamController::UinputSteamController() : UinputKeyboard({BTN_GEAR_DOWN, BTN_GEAR_UP}) {}
// --- UinputTouchScreen ---
UinputTouchScreen::UinputTouchScreen(const Rect* size)
: UinputDevice(UinputTouchScreen::DEVICE_NAME), mSize(*size) {}
void UinputTouchScreen::configureDevice(int fd, uinput_user_dev* device) {
// Setup the touch screen device
ioctl(fd, UI_SET_EVBIT, EV_KEY);
ioctl(fd, UI_SET_EVBIT, EV_REL);
ioctl(fd, UI_SET_EVBIT, EV_ABS);
ioctl(fd, UI_SET_ABSBIT, ABS_MT_SLOT);
ioctl(fd, UI_SET_ABSBIT, ABS_MT_TOUCH_MAJOR);
ioctl(fd, UI_SET_ABSBIT, ABS_MT_POSITION_X);
ioctl(fd, UI_SET_ABSBIT, ABS_MT_POSITION_Y);
ioctl(fd, UI_SET_ABSBIT, ABS_MT_TRACKING_ID);
ioctl(fd, UI_SET_ABSBIT, ABS_MT_TOOL_TYPE);
ioctl(fd, UI_SET_PROPBIT, INPUT_PROP_DIRECT);
ioctl(fd, UI_SET_KEYBIT, BTN_TOUCH);
device->absmin[ABS_MT_SLOT] = RAW_SLOT_MIN;
device->absmax[ABS_MT_SLOT] = RAW_SLOT_MAX;
device->absmin[ABS_MT_TOUCH_MAJOR] = RAW_TOUCH_MIN;
device->absmax[ABS_MT_TOUCH_MAJOR] = RAW_TOUCH_MAX;
device->absmin[ABS_MT_POSITION_X] = mSize.left;
device->absmax[ABS_MT_POSITION_X] = mSize.right - 1;
device->absmin[ABS_MT_POSITION_Y] = mSize.top;
device->absmax[ABS_MT_POSITION_Y] = mSize.bottom - 1;
device->absmin[ABS_MT_TRACKING_ID] = RAW_ID_MIN;
device->absmax[ABS_MT_TRACKING_ID] = RAW_ID_MAX;
}
void UinputTouchScreen::sendSlot(int32_t slot) {
injectEvent(EV_ABS, ABS_MT_SLOT, slot);
}
void UinputTouchScreen::sendTrackingId(int32_t trackingId) {
injectEvent(EV_ABS, ABS_MT_TRACKING_ID, trackingId);
}
void UinputTouchScreen::sendDown(const Point& point) {
injectEvent(EV_KEY, BTN_TOUCH, 1);
injectEvent(EV_ABS, ABS_MT_POSITION_X, point.x);
injectEvent(EV_ABS, ABS_MT_POSITION_Y, point.y);
injectEvent(EV_SYN, SYN_REPORT, 0);
}
void UinputTouchScreen::sendMove(const Point& point) {
injectEvent(EV_ABS, ABS_MT_POSITION_X, point.x);
injectEvent(EV_ABS, ABS_MT_POSITION_Y, point.y);
injectEvent(EV_SYN, SYN_REPORT, 0);
}
void UinputTouchScreen::sendPointerUp() {
sendTrackingId(0xffffffff);
injectEvent(EV_SYN, SYN_REPORT, 0);
}
void UinputTouchScreen::sendUp() {
sendTrackingId(0xffffffff);
injectEvent(EV_KEY, BTN_TOUCH, 0);
injectEvent(EV_SYN, SYN_REPORT, 0);
}
void UinputTouchScreen::sendToolType(int32_t toolType) {
injectEvent(EV_ABS, ABS_MT_TOOL_TYPE, toolType);
injectEvent(EV_SYN, SYN_REPORT, 0);
}
// Get the center x, y base on the range definition.
const Point UinputTouchScreen::getCenterPoint() {
return Point(mSize.left + mSize.width() / 2, mSize.top + mSize.height() / 2);
}
} // namespace android
|
