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Michael Wrightd02c5b62014-02-10 15:10:22 -08001/*
2 * Copyright (C) 2005 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
Michael Wrightd02c5b62014-02-10 15:10:22 -080017#ifndef _RUNTIME_EVENT_HUB_H
18#define _RUNTIME_EVENT_HUB_H
19
Siarhei Vishniakouec8f7252018-07-06 11:19:32 +010020#include <vector>
21
Michael Wrightd02c5b62014-02-10 15:10:22 -080022#include <input/Input.h>
23#include <input/InputDevice.h>
Michael Wrightd02c5b62014-02-10 15:10:22 -080024#include <input/KeyCharacterMap.h>
Prabir Pradhanda7c00c2019-08-29 14:12:42 -070025#include <input/KeyLayoutMap.h>
26#include <input/Keyboard.h>
Michael Wrightd02c5b62014-02-10 15:10:22 -080027#include <input/VirtualKeyMap.h>
Michael Wrightd02c5b62014-02-10 15:10:22 -080028#include <utils/BitSet.h>
Prabir Pradhanda7c00c2019-08-29 14:12:42 -070029#include <utils/Errors.h>
30#include <utils/KeyedVector.h>
31#include <utils/List.h>
32#include <utils/Log.h>
33#include <utils/Mutex.h>
34#include <utils/PropertyMap.h>
Michael Wrightd02c5b62014-02-10 15:10:22 -080035
36#include <linux/input.h>
37#include <sys/epoll.h>
38
Siarhei Vishniakou22c88462018-12-13 19:34:53 -080039#include "TouchVideoDevice.h"
40
Michael Wrightd02c5b62014-02-10 15:10:22 -080041/* Convenience constants. */
42
Prabir Pradhanda7c00c2019-08-29 14:12:42 -070043#define BTN_FIRST 0x100 // first button code
44#define BTN_LAST 0x15f // last button code
Michael Wrightd02c5b62014-02-10 15:10:22 -080045
Michael Wrightd02c5b62014-02-10 15:10:22 -080046namespace android {
47
Michael Wrightd02c5b62014-02-10 15:10:22 -080048/*
49 * A raw event as retrieved from the EventHub.
50 */
51struct RawEvent {
52 nsecs_t when;
53 int32_t deviceId;
54 int32_t type;
55 int32_t code;
56 int32_t value;
57};
58
59/* Describes an absolute axis. */
60struct RawAbsoluteAxisInfo {
61 bool valid; // true if the information is valid, false otherwise
62
Prabir Pradhanda7c00c2019-08-29 14:12:42 -070063 int32_t minValue; // minimum value
64 int32_t maxValue; // maximum value
65 int32_t flat; // center flat position, eg. flat == 8 means center is between -8 and 8
66 int32_t fuzz; // error tolerance, eg. fuzz == 4 means value is +/- 4 due to noise
Michael Wrightd02c5b62014-02-10 15:10:22 -080067 int32_t resolution; // resolution in units per mm or radians per mm
68
69 inline void clear() {
70 valid = false;
71 minValue = 0;
72 maxValue = 0;
73 flat = 0;
74 fuzz = 0;
75 resolution = 0;
76 }
77};
78
79/*
80 * Input device classes.
81 */
82enum {
83 /* The input device is a keyboard or has buttons. */
Prabir Pradhanda7c00c2019-08-29 14:12:42 -070084 INPUT_DEVICE_CLASS_KEYBOARD = 0x00000001,
Michael Wrightd02c5b62014-02-10 15:10:22 -080085
86 /* The input device is an alpha-numeric keyboard (not just a dial pad). */
Prabir Pradhanda7c00c2019-08-29 14:12:42 -070087 INPUT_DEVICE_CLASS_ALPHAKEY = 0x00000002,
Michael Wrightd02c5b62014-02-10 15:10:22 -080088
89 /* The input device is a touchscreen or a touchpad (either single-touch or multi-touch). */
Prabir Pradhanda7c00c2019-08-29 14:12:42 -070090 INPUT_DEVICE_CLASS_TOUCH = 0x00000004,
Michael Wrightd02c5b62014-02-10 15:10:22 -080091
92 /* The input device is a cursor device such as a trackball or mouse. */
Prabir Pradhanda7c00c2019-08-29 14:12:42 -070093 INPUT_DEVICE_CLASS_CURSOR = 0x00000008,
Michael Wrightd02c5b62014-02-10 15:10:22 -080094
95 /* The input device is a multi-touch touchscreen. */
Prabir Pradhanda7c00c2019-08-29 14:12:42 -070096 INPUT_DEVICE_CLASS_TOUCH_MT = 0x00000010,
Michael Wrightd02c5b62014-02-10 15:10:22 -080097
98 /* The input device is a directional pad (implies keyboard, has DPAD keys). */
Prabir Pradhanda7c00c2019-08-29 14:12:42 -070099 INPUT_DEVICE_CLASS_DPAD = 0x00000020,
Michael Wrightd02c5b62014-02-10 15:10:22 -0800100
101 /* The input device is a gamepad (implies keyboard, has BUTTON keys). */
Prabir Pradhanda7c00c2019-08-29 14:12:42 -0700102 INPUT_DEVICE_CLASS_GAMEPAD = 0x00000040,
Michael Wrightd02c5b62014-02-10 15:10:22 -0800103
104 /* The input device has switches. */
Prabir Pradhanda7c00c2019-08-29 14:12:42 -0700105 INPUT_DEVICE_CLASS_SWITCH = 0x00000080,
Michael Wrightd02c5b62014-02-10 15:10:22 -0800106
107 /* The input device is a joystick (implies gamepad, has joystick absolute axes). */
Prabir Pradhanda7c00c2019-08-29 14:12:42 -0700108 INPUT_DEVICE_CLASS_JOYSTICK = 0x00000100,
Michael Wrightd02c5b62014-02-10 15:10:22 -0800109
110 /* The input device has a vibrator (supports FF_RUMBLE). */
Prabir Pradhanda7c00c2019-08-29 14:12:42 -0700111 INPUT_DEVICE_CLASS_VIBRATOR = 0x00000200,
Michael Wrightd02c5b62014-02-10 15:10:22 -0800112
Tim Kilbourn063ff532015-04-08 10:26:18 -0700113 /* The input device has a microphone. */
Prabir Pradhanda7c00c2019-08-29 14:12:42 -0700114 INPUT_DEVICE_CLASS_MIC = 0x00000400,
Tim Kilbourn063ff532015-04-08 10:26:18 -0700115
Michael Wright842500e2015-03-13 17:32:02 -0700116 /* The input device is an external stylus (has data we want to fuse with touch data). */
117 INPUT_DEVICE_CLASS_EXTERNAL_STYLUS = 0x00000800,
118
Prashant Malani1941ff52015-08-11 18:29:28 -0700119 /* The input device has a rotary encoder */
120 INPUT_DEVICE_CLASS_ROTARY_ENCODER = 0x00001000,
121
Michael Wrightd02c5b62014-02-10 15:10:22 -0800122 /* The input device is virtual (not a real device, not part of UI configuration). */
Prabir Pradhanda7c00c2019-08-29 14:12:42 -0700123 INPUT_DEVICE_CLASS_VIRTUAL = 0x40000000,
Michael Wrightd02c5b62014-02-10 15:10:22 -0800124
125 /* The input device is external (not built-in). */
Prabir Pradhanda7c00c2019-08-29 14:12:42 -0700126 INPUT_DEVICE_CLASS_EXTERNAL = 0x80000000,
Michael Wrightd02c5b62014-02-10 15:10:22 -0800127};
128
129/*
130 * Gets the class that owns an axis, in cases where multiple classes might claim
131 * the same axis for different purposes.
132 */
133extern uint32_t getAbsAxisUsage(int32_t axis, uint32_t deviceClasses);
134
135/*
136 * Grand Central Station for events.
137 *
138 * The event hub aggregates input events received across all known input
139 * devices on the system, including devices that may be emulated by the simulator
140 * environment. In addition, the event hub generates fake input events to indicate
141 * when devices are added or removed.
142 *
143 * The event hub provides a stream of input events (via the getEvent function).
144 * It also supports querying the current actual state of input devices such as identifying
145 * which keys are currently down. Finally, the event hub keeps track of the capabilities of
146 * individual input devices, such as their class and the set of key codes that they support.
147 */
Siarhei Vishniakou3bc7e092019-07-24 17:43:30 -0700148class EventHubInterface {
149public:
Prabir Pradhanda7c00c2019-08-29 14:12:42 -0700150 EventHubInterface() {}
151 virtual ~EventHubInterface() {}
Michael Wrightd02c5b62014-02-10 15:10:22 -0800152
Michael Wrightd02c5b62014-02-10 15:10:22 -0800153 // Synthetic raw event type codes produced when devices are added or removed.
154 enum {
155 // Sent when a device is added.
156 DEVICE_ADDED = 0x10000000,
157 // Sent when a device is removed.
158 DEVICE_REMOVED = 0x20000000,
159 // Sent when all added/removed devices from the most recent scan have been reported.
160 // This event is always sent at least once.
161 FINISHED_DEVICE_SCAN = 0x30000000,
162
163 FIRST_SYNTHETIC_EVENT = DEVICE_ADDED,
164 };
165
166 virtual uint32_t getDeviceClasses(int32_t deviceId) const = 0;
167
168 virtual InputDeviceIdentifier getDeviceIdentifier(int32_t deviceId) const = 0;
169
170 virtual int32_t getDeviceControllerNumber(int32_t deviceId) const = 0;
171
172 virtual void getConfiguration(int32_t deviceId, PropertyMap* outConfiguration) const = 0;
173
174 virtual status_t getAbsoluteAxisInfo(int32_t deviceId, int axis,
Prabir Pradhanda7c00c2019-08-29 14:12:42 -0700175 RawAbsoluteAxisInfo* outAxisInfo) const = 0;
Michael Wrightd02c5b62014-02-10 15:10:22 -0800176
177 virtual bool hasRelativeAxis(int32_t deviceId, int axis) const = 0;
178
179 virtual bool hasInputProperty(int32_t deviceId, int property) const = 0;
180
Prabir Pradhanda7c00c2019-08-29 14:12:42 -0700181 virtual status_t mapKey(int32_t deviceId, int32_t scanCode, int32_t usageCode,
182 int32_t metaState, int32_t* outKeycode, int32_t* outMetaState,
183 uint32_t* outFlags) const = 0;
Michael Wrightd02c5b62014-02-10 15:10:22 -0800184
Prabir Pradhanda7c00c2019-08-29 14:12:42 -0700185 virtual status_t mapAxis(int32_t deviceId, int32_t scanCode, AxisInfo* outAxisInfo) const = 0;
Michael Wrightd02c5b62014-02-10 15:10:22 -0800186
187 // Sets devices that are excluded from opening.
188 // This can be used to ignore input devices for sensors.
Siarhei Vishniakouec8f7252018-07-06 11:19:32 +0100189 virtual void setExcludedDevices(const std::vector<std::string>& devices) = 0;
Michael Wrightd02c5b62014-02-10 15:10:22 -0800190
191 /*
192 * Wait for events to become available and returns them.
193 * After returning, the EventHub holds onto a wake lock until the next call to getEvent.
194 * This ensures that the device will not go to sleep while the event is being processed.
195 * If the device needs to remain awake longer than that, then the caller is responsible
196 * for taking care of it (say, by poking the power manager user activity timer).
197 *
198 * The timeout is advisory only. If the device is asleep, it will not wake just to
199 * service the timeout.
200 *
201 * Returns the number of events obtained, or 0 if the timeout expired.
202 */
203 virtual size_t getEvents(int timeoutMillis, RawEvent* buffer, size_t bufferSize) = 0;
Siarhei Vishniakouadd89292018-12-13 19:23:36 -0800204 virtual std::vector<TouchVideoFrame> getVideoFrames(int32_t deviceId) = 0;
Michael Wrightd02c5b62014-02-10 15:10:22 -0800205
206 /*
207 * Query current input state.
208 */
209 virtual int32_t getScanCodeState(int32_t deviceId, int32_t scanCode) const = 0;
210 virtual int32_t getKeyCodeState(int32_t deviceId, int32_t keyCode) const = 0;
211 virtual int32_t getSwitchState(int32_t deviceId, int32_t sw) const = 0;
212 virtual status_t getAbsoluteAxisValue(int32_t deviceId, int32_t axis,
Prabir Pradhanda7c00c2019-08-29 14:12:42 -0700213 int32_t* outValue) const = 0;
Michael Wrightd02c5b62014-02-10 15:10:22 -0800214
215 /*
216 * Examine key input devices for specific framework keycode support
217 */
218 virtual bool markSupportedKeyCodes(int32_t deviceId, size_t numCodes, const int32_t* keyCodes,
Prabir Pradhanda7c00c2019-08-29 14:12:42 -0700219 uint8_t* outFlags) const = 0;
Michael Wrightd02c5b62014-02-10 15:10:22 -0800220
221 virtual bool hasScanCode(int32_t deviceId, int32_t scanCode) const = 0;
222
223 /* LED related functions expect Android LED constants, not scan codes or HID usages */
224 virtual bool hasLed(int32_t deviceId, int32_t led) const = 0;
225 virtual void setLedState(int32_t deviceId, int32_t led, bool on) = 0;
226
Prabir Pradhanda7c00c2019-08-29 14:12:42 -0700227 virtual void getVirtualKeyDefinitions(
228 int32_t deviceId, std::vector<VirtualKeyDefinition>& outVirtualKeys) const = 0;
Michael Wrightd02c5b62014-02-10 15:10:22 -0800229
230 virtual sp<KeyCharacterMap> getKeyCharacterMap(int32_t deviceId) const = 0;
231 virtual bool setKeyboardLayoutOverlay(int32_t deviceId, const sp<KeyCharacterMap>& map) = 0;
232
233 /* Control the vibrator. */
234 virtual void vibrate(int32_t deviceId, nsecs_t duration) = 0;
235 virtual void cancelVibrate(int32_t deviceId) = 0;
236
237 /* Requests the EventHub to reopen all input devices on the next call to getEvents(). */
238 virtual void requestReopenDevices() = 0;
239
240 /* Wakes up getEvents() if it is blocked on a read. */
241 virtual void wake() = 0;
242
243 /* Dump EventHub state to a string. */
Siarhei Vishniakouf93fcf42017-11-22 16:00:14 -0800244 virtual void dump(std::string& dump) = 0;
Michael Wrightd02c5b62014-02-10 15:10:22 -0800245
246 /* Called by the heatbeat to ensures that the reader has not deadlocked. */
247 virtual void monitor() = 0;
Siarhei Vishniakoue54cb852017-03-21 17:48:16 -0700248
249 /* Return true if the device is enabled. */
250 virtual bool isDeviceEnabled(int32_t deviceId) = 0;
251
252 /* Enable an input device */
253 virtual status_t enableDevice(int32_t deviceId) = 0;
254
255 /* Disable an input device. Closes file descriptor to that device. */
256 virtual status_t disableDevice(int32_t deviceId) = 0;
Michael Wrightd02c5b62014-02-10 15:10:22 -0800257};
258
Prabir Pradhanda7c00c2019-08-29 14:12:42 -0700259class EventHub : public EventHubInterface {
Michael Wrightd02c5b62014-02-10 15:10:22 -0800260public:
261 EventHub();
262
263 virtual uint32_t getDeviceClasses(int32_t deviceId) const;
264
265 virtual InputDeviceIdentifier getDeviceIdentifier(int32_t deviceId) const;
266
267 virtual int32_t getDeviceControllerNumber(int32_t deviceId) const;
268
269 virtual void getConfiguration(int32_t deviceId, PropertyMap* outConfiguration) const;
270
271 virtual status_t getAbsoluteAxisInfo(int32_t deviceId, int axis,
Prabir Pradhanda7c00c2019-08-29 14:12:42 -0700272 RawAbsoluteAxisInfo* outAxisInfo) const;
Michael Wrightd02c5b62014-02-10 15:10:22 -0800273
274 virtual bool hasRelativeAxis(int32_t deviceId, int axis) const;
275
276 virtual bool hasInputProperty(int32_t deviceId, int property) const;
277
Prabir Pradhanda7c00c2019-08-29 14:12:42 -0700278 virtual status_t mapKey(int32_t deviceId, int32_t scanCode, int32_t usageCode,
279 int32_t metaState, int32_t* outKeycode, int32_t* outMetaState,
280 uint32_t* outFlags) const;
Michael Wrightd02c5b62014-02-10 15:10:22 -0800281
Prabir Pradhanda7c00c2019-08-29 14:12:42 -0700282 virtual status_t mapAxis(int32_t deviceId, int32_t scanCode, AxisInfo* outAxisInfo) const;
Michael Wrightd02c5b62014-02-10 15:10:22 -0800283
Siarhei Vishniakouec8f7252018-07-06 11:19:32 +0100284 virtual void setExcludedDevices(const std::vector<std::string>& devices);
Michael Wrightd02c5b62014-02-10 15:10:22 -0800285
286 virtual int32_t getScanCodeState(int32_t deviceId, int32_t scanCode) const;
287 virtual int32_t getKeyCodeState(int32_t deviceId, int32_t keyCode) const;
288 virtual int32_t getSwitchState(int32_t deviceId, int32_t sw) const;
289 virtual status_t getAbsoluteAxisValue(int32_t deviceId, int32_t axis, int32_t* outValue) const;
290
Prabir Pradhanda7c00c2019-08-29 14:12:42 -0700291 virtual bool markSupportedKeyCodes(int32_t deviceId, size_t numCodes, const int32_t* keyCodes,
292 uint8_t* outFlags) const;
Michael Wrightd02c5b62014-02-10 15:10:22 -0800293
294 virtual size_t getEvents(int timeoutMillis, RawEvent* buffer, size_t bufferSize);
Siarhei Vishniakouadd89292018-12-13 19:23:36 -0800295 virtual std::vector<TouchVideoFrame> getVideoFrames(int32_t deviceId);
Michael Wrightd02c5b62014-02-10 15:10:22 -0800296
297 virtual bool hasScanCode(int32_t deviceId, int32_t scanCode) const;
298 virtual bool hasLed(int32_t deviceId, int32_t led) const;
299 virtual void setLedState(int32_t deviceId, int32_t led, bool on);
300
301 virtual void getVirtualKeyDefinitions(int32_t deviceId,
Prabir Pradhanda7c00c2019-08-29 14:12:42 -0700302 std::vector<VirtualKeyDefinition>& outVirtualKeys) const;
Michael Wrightd02c5b62014-02-10 15:10:22 -0800303
304 virtual sp<KeyCharacterMap> getKeyCharacterMap(int32_t deviceId) const;
305 virtual bool setKeyboardLayoutOverlay(int32_t deviceId, const sp<KeyCharacterMap>& map);
306
307 virtual void vibrate(int32_t deviceId, nsecs_t duration);
308 virtual void cancelVibrate(int32_t deviceId);
309
310 virtual void requestReopenDevices();
311
312 virtual void wake();
313
Siarhei Vishniakouf93fcf42017-11-22 16:00:14 -0800314 virtual void dump(std::string& dump);
Michael Wrightd02c5b62014-02-10 15:10:22 -0800315 virtual void monitor();
316
Michael Wrightd02c5b62014-02-10 15:10:22 -0800317 virtual ~EventHub();
318
319private:
320 struct Device {
321 Device* next;
322
Siarhei Vishniakoue54cb852017-03-21 17:48:16 -0700323 int fd; // may be -1 if device is closed
Michael Wrightd02c5b62014-02-10 15:10:22 -0800324 const int32_t id;
Siarhei Vishniakouec8f7252018-07-06 11:19:32 +0100325 const std::string path;
Michael Wrightd02c5b62014-02-10 15:10:22 -0800326 const InputDeviceIdentifier identifier;
327
Siarhei Vishniakouec7854a2018-12-14 16:52:34 -0800328 std::unique_ptr<TouchVideoDevice> videoDevice;
329
Michael Wrightd02c5b62014-02-10 15:10:22 -0800330 uint32_t classes;
331
332 uint8_t keyBitmask[(KEY_MAX + 1) / 8];
333 uint8_t absBitmask[(ABS_MAX + 1) / 8];
334 uint8_t relBitmask[(REL_MAX + 1) / 8];
335 uint8_t swBitmask[(SW_MAX + 1) / 8];
336 uint8_t ledBitmask[(LED_MAX + 1) / 8];
337 uint8_t ffBitmask[(FF_MAX + 1) / 8];
338 uint8_t propBitmask[(INPUT_PROP_MAX + 1) / 8];
339
Siarhei Vishniakouec8f7252018-07-06 11:19:32 +0100340 std::string configurationFile;
Michael Wrightd02c5b62014-02-10 15:10:22 -0800341 PropertyMap* configuration;
Siarhei Vishniakou3e78dec2019-02-20 16:21:46 -0600342 std::unique_ptr<VirtualKeyMap> virtualKeyMap;
Michael Wrightd02c5b62014-02-10 15:10:22 -0800343 KeyMap keyMap;
344
345 sp<KeyCharacterMap> overlayKeyMap;
346 sp<KeyCharacterMap> combinedKeyMap;
347
348 bool ffEffectPlaying;
349 int16_t ffEffectId; // initially -1
350
351 int32_t controllerNumber;
352
Siarhei Vishniakouec8f7252018-07-06 11:19:32 +0100353 Device(int fd, int32_t id, const std::string& path,
Prabir Pradhanda7c00c2019-08-29 14:12:42 -0700354 const InputDeviceIdentifier& identifier);
Michael Wrightd02c5b62014-02-10 15:10:22 -0800355 ~Device();
356
357 void close();
358
Siarhei Vishniakoue54cb852017-03-21 17:48:16 -0700359 bool enabled; // initially true
360 status_t enable();
361 status_t disable();
362 bool hasValidFd();
363 const bool isVirtual; // set if fd < 0 is passed to constructor
Michael Wrightd02c5b62014-02-10 15:10:22 -0800364
365 const sp<KeyCharacterMap>& getKeyCharacterMap() const {
Yi Kong9b14ac62018-07-17 13:48:38 -0700366 if (combinedKeyMap != nullptr) {
Michael Wrightd02c5b62014-02-10 15:10:22 -0800367 return combinedKeyMap;
368 }
369 return keyMap.keyCharacterMap;
370 }
371 };
372
Siarhei Vishniakou12598682018-11-02 17:19:19 -0700373 status_t openDeviceLocked(const char* devicePath);
Siarhei Vishniakou22c88462018-12-13 19:34:53 -0800374 void openVideoDeviceLocked(const std::string& devicePath);
Michael Wrightd02c5b62014-02-10 15:10:22 -0800375 void createVirtualKeyboardLocked();
376 void addDeviceLocked(Device* device);
377 void assignDescriptorLocked(InputDeviceIdentifier& identifier);
378
Prabir Pradhanda7c00c2019-08-29 14:12:42 -0700379 void closeDeviceByPathLocked(const char* devicePath);
Siarhei Vishniakou22c88462018-12-13 19:34:53 -0800380 void closeVideoDeviceByPathLocked(const std::string& devicePath);
Michael Wrightd02c5b62014-02-10 15:10:22 -0800381 void closeDeviceLocked(Device* device);
382 void closeAllDevicesLocked();
383
Siarhei Vishniakoue54cb852017-03-21 17:48:16 -0700384 void configureFd(Device* device);
385
386 bool isDeviceEnabled(int32_t deviceId);
387 status_t enableDevice(int32_t deviceId);
388 status_t disableDevice(int32_t deviceId);
Siarhei Vishniakou25920312018-12-12 15:24:44 -0800389 status_t registerFdForEpoll(int fd);
390 status_t unregisterFdFromEpoll(int fd);
Siarhei Vishniakoue54cb852017-03-21 17:48:16 -0700391 status_t registerDeviceForEpollLocked(Device* device);
Siarhei Vishniakou12598682018-11-02 17:19:19 -0700392 void registerVideoDeviceForEpollLocked(const TouchVideoDevice& videoDevice);
Siarhei Vishniakoue54cb852017-03-21 17:48:16 -0700393 status_t unregisterDeviceFromEpollLocked(Device* device);
Siarhei Vishniakou12598682018-11-02 17:19:19 -0700394 void unregisterVideoDeviceFromEpollLocked(const TouchVideoDevice& videoDevice);
Siarhei Vishniakoue54cb852017-03-21 17:48:16 -0700395
Prabir Pradhanda7c00c2019-08-29 14:12:42 -0700396 status_t scanDirLocked(const char* dirname);
Siarhei Vishniakou22c88462018-12-13 19:34:53 -0800397 status_t scanVideoDirLocked(const std::string& dirname);
Michael Wrightd02c5b62014-02-10 15:10:22 -0800398 void scanDevicesLocked();
399 status_t readNotifyLocked();
400
Siarhei Vishniakouec8f7252018-07-06 11:19:32 +0100401 Device* getDeviceByDescriptorLocked(const std::string& descriptor) const;
Michael Wrightd02c5b62014-02-10 15:10:22 -0800402 Device* getDeviceLocked(int32_t deviceId) const;
403 Device* getDeviceByPathLocked(const char* devicePath) const;
Siarhei Vishniakou12598682018-11-02 17:19:19 -0700404 /**
405 * Look through all available fd's (both for input devices and for video devices),
406 * and return the device pointer.
407 */
Siarhei Vishniakou4bc561c2018-11-02 17:41:58 -0700408 Device* getDeviceByFdLocked(int fd) const;
Michael Wrightd02c5b62014-02-10 15:10:22 -0800409
410 bool hasKeycodeLocked(Device* device, int keycode) const;
411
412 void loadConfigurationLocked(Device* device);
Siarhei Vishniakou3e78dec2019-02-20 16:21:46 -0600413 bool loadVirtualKeyMapLocked(Device* device);
Michael Wrightd02c5b62014-02-10 15:10:22 -0800414 status_t loadKeyMapLocked(Device* device);
415
416 bool isExternalDeviceLocked(Device* device);
Tim Kilbourn063ff532015-04-08 10:26:18 -0700417 bool deviceHasMicLocked(Device* device);
Michael Wrightd02c5b62014-02-10 15:10:22 -0800418
419 int32_t getNextControllerNumberLocked(Device* device);
420 void releaseControllerNumberLocked(Device* device);
Siarhei Vishniakoue54cb852017-03-21 17:48:16 -0700421 void setLedForControllerLocked(Device* device);
Michael Wrightd02c5b62014-02-10 15:10:22 -0800422
423 status_t mapLed(Device* device, int32_t led, int32_t* outScanCode) const;
424 void setLedStateLocked(Device* device, int32_t led, bool on);
425
426 // Protect all internal state.
427 mutable Mutex mLock;
428
429 // The actual id of the built-in keyboard, or NO_BUILT_IN_KEYBOARD if none.
430 // EventHub remaps the built-in keyboard to id 0 externally as required by the API.
431 enum {
432 // Must not conflict with any other assigned device ids, including
433 // the virtual keyboard id (-1).
434 NO_BUILT_IN_KEYBOARD = -2,
435 };
436 int32_t mBuiltInKeyboardId;
437
438 int32_t mNextDeviceId;
439
440 BitSet32 mControllerNumbers;
441
442 KeyedVector<int32_t, Device*> mDevices;
Siarhei Vishniakou22c88462018-12-13 19:34:53 -0800443 /**
444 * Video devices that report touchscreen heatmap, but have not (yet) been paired
445 * with a specific input device. Video device discovery is independent from input device
446 * discovery, so the two types of devices could be found in any order.
447 * Ideally, video devices in this queue do not have an open fd, or at least aren't
448 * actively streaming.
449 */
450 std::vector<std::unique_ptr<TouchVideoDevice>> mUnattachedVideoDevices;
Michael Wrightd02c5b62014-02-10 15:10:22 -0800451
Prabir Pradhanda7c00c2019-08-29 14:12:42 -0700452 Device* mOpeningDevices;
453 Device* mClosingDevices;
Michael Wrightd02c5b62014-02-10 15:10:22 -0800454
455 bool mNeedToSendFinishedDeviceScan;
456 bool mNeedToReopenDevices;
457 bool mNeedToScanDevices;
Siarhei Vishniakouec8f7252018-07-06 11:19:32 +0100458 std::vector<std::string> mExcludedDevices;
Michael Wrightd02c5b62014-02-10 15:10:22 -0800459
460 int mEpollFd;
461 int mINotifyFd;
462 int mWakeReadPipeFd;
463 int mWakeWritePipeFd;
464
Siarhei Vishniakou951f3622018-12-12 19:45:42 -0800465 int mInputWd;
466 int mVideoWd;
467
Michael Wrightd02c5b62014-02-10 15:10:22 -0800468 // Maximum number of signalled FDs to handle at a time.
469 static const int EPOLL_MAX_EVENTS = 16;
470
471 // The array of pending epoll events and the index of the next event to be handled.
472 struct epoll_event mPendingEventItems[EPOLL_MAX_EVENTS];
473 size_t mPendingEventCount;
474 size_t mPendingEventIndex;
475 bool mPendingINotify;
Michael Wrightd02c5b62014-02-10 15:10:22 -0800476};
477
478}; // namespace android
479
480#endif // _RUNTIME_EVENT_HUB_H