king
/
v811_spc009
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
Branches Tags
${ item.name }
Create tag ${ searchTerm }
Create branch ${ searchTerm }
from 'b394c2d4e7'
${ noResults }
v811_spc009/frameworks/native/services/inputflinger/reader/include/EventHub.h

721 lines
28 KiB
Raw Normal View History Unescape

v811_spc009_project
7 months ago
/*
* Copyright (C) 2005 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.
*/
#ifndef _RUNTIME_EVENT_HUB_H
#define _RUNTIME_EVENT_HUB_H
#include <bitset>
#include <climits>
#include <unordered_map>
#include <vector>
#include <input/Flags.h>
#include <filesystem>
#include <batteryservice/BatteryService.h>
#include <input/Input.h>
#include <input/InputDevice.h>
#include <input/KeyCharacterMap.h>
#include <input/KeyLayoutMap.h>
#include <input/Keyboard.h>
#include <input/PropertyMap.h>
#include <input/VirtualKeyMap.h>
#include <linux/input.h>
#include <sys/epoll.h>
#include <utils/BitSet.h>
#include <utils/Errors.h>
#include <utils/KeyedVector.h>
#include <utils/List.h>
#include <utils/Log.h>
#include <utils/Mutex.h>
#include "TouchVideoDevice.h"
#include "VibrationElement.h"
namespace android {
/* Number of colors : {red, green, blue} */
static constexpr size_t COLOR_NUM = 3;
/*
* A raw event as retrieved from the EventHub.
*/
struct RawEvent {
// Time when the event happened
nsecs_t when;
// Time when the event was read by EventHub. Only populated for input events.
// For other events (device added/removed/etc), this value is undefined and should not be read.
nsecs_t readTime;
int32_t deviceId;
int32_t type;
int32_t code;
int32_t value;
};
/* Describes an absolute axis. */
struct RawAbsoluteAxisInfo {
bool valid; // true if the information is valid, false otherwise
int32_t minValue; // minimum value
int32_t maxValue; // maximum value
int32_t flat; // center flat position, eg. flat == 8 means center is between -8 and 8
int32_t fuzz; // error tolerance, eg. fuzz == 4 means value is +/- 4 due to noise
int32_t resolution; // resolution in units per mm or radians per mm
inline void clear() {
valid = false;
minValue = 0;
maxValue = 0;
flat = 0;
fuzz = 0;
resolution = 0;
}
};
/*
* Input device classes.
*/
enum class InputDeviceClass : uint32_t {
/* The input device is a keyboard or has buttons. */
KEYBOARD = 0x00000001,
/* The input device is an alpha-numeric keyboard (not just a dial pad). */
ALPHAKEY = 0x00000002,
/* The input device is a touchscreen or a touchpad (either single-touch or multi-touch). */
TOUCH = 0x00000004,
/* The input device is a cursor device such as a trackball or mouse. */
CURSOR = 0x00000008,
/* The input device is a multi-touch touchscreen. */
TOUCH_MT = 0x00000010,
/* The input device is a directional pad (implies keyboard, has DPAD keys). */
DPAD = 0x00000020,
/* The input device is a gamepad (implies keyboard, has BUTTON keys). */
GAMEPAD = 0x00000040,
/* The input device has switches. */
SWITCH = 0x00000080,
/* The input device is a joystick (implies gamepad, has joystick absolute axes). */
JOYSTICK = 0x00000100,
/* The input device has a vibrator (supports FF_RUMBLE). */
VIBRATOR = 0x00000200,
/* The input device has a microphone. */
MIC = 0x00000400,
/* The input device is an external stylus (has data we want to fuse with touch data). */
EXTERNAL_STYLUS = 0x00000800,
/* The input device has a rotary encoder */
ROTARY_ENCODER = 0x00001000,
/* The input device has a sensor like accelerometer, gyro, etc */
SENSOR = 0x00002000,
/* The input device has a battery */
BATTERY = 0x00004000,
/* The input device has sysfs controllable lights */
LIGHT = 0x00008000,
/* The input device is virtual (not a real device, not part of UI configuration). */
VIRTUAL = 0x40000000,
/* The input device is external (not built-in). */
EXTERNAL = 0x80000000,
};
enum class SysfsClass : uint32_t {
POWER_SUPPLY = 0,
LEDS = 1,
};
enum class LightColor : uint32_t {
RED = 0,
GREEN = 1,
BLUE = 2,
};
enum class InputLightClass : uint32_t {
/* The input light has brightness node. */
BRIGHTNESS = 0x00000001,
/* The input light has red name. */
RED = 0x00000002,
/* The input light has green name. */
GREEN = 0x00000004,
/* The input light has blue name. */
BLUE = 0x00000008,
/* The input light has global name. */
GLOBAL = 0x00000010,
/* The input light has multi index node. */
MULTI_INDEX = 0x00000020,
/* The input light has multi intensity node. */
MULTI_INTENSITY = 0x00000040,
/* The input light has max brightness node. */
MAX_BRIGHTNESS = 0x00000080,
};
enum class InputBatteryClass : uint32_t {
/* The input device battery has capacity node. */
CAPACITY = 0x00000001,
/* The input device battery has capacity_level node. */
CAPACITY_LEVEL = 0x00000002,
/* The input device battery has status node. */
STATUS = 0x00000004,
};
/* Describes a raw light. */
struct RawLightInfo {
int32_t id;
std::string name;
std::optional<int32_t> maxBrightness;
Flags<InputLightClass> flags;
std::array<int32_t, COLOR_NUM> rgbIndex;
std::filesystem::path path;
};
/* Describes a raw battery. */
struct RawBatteryInfo {
int32_t id;
std::string name;
Flags<InputBatteryClass> flags;
std::filesystem::path path;
};
/*
* Gets the class that owns an axis, in cases where multiple classes might claim
* the same axis for different purposes.
*/
extern Flags<InputDeviceClass> getAbsAxisUsage(int32_t axis, Flags<InputDeviceClass> deviceClasses);
/*
* Grand Central Station for events.
*
* The event hub aggregates input events received across all known input
* devices on the system, including devices that may be emulated by the simulator
* environment. In addition, the event hub generates fake input events to indicate
* when devices are added or removed.
*
* The event hub provides a stream of input events (via the getEvent function).
* It also supports querying the current actual state of input devices such as identifying
* which keys are currently down. Finally, the event hub keeps track of the capabilities of
* individual input devices, such as their class and the set of key codes that they support.
*/
class EventHubInterface {
public:
EventHubInterface() {}
virtual ~EventHubInterface() {}
// Synthetic raw event type codes produced when devices are added or removed.
enum {
// Sent when a device is added.
DEVICE_ADDED = 0x10000000,
// Sent when a device is removed.
DEVICE_REMOVED = 0x20000000,
// Sent when all added/removed devices from the most recent scan have been reported.
// This event is always sent at least once.
FINISHED_DEVICE_SCAN = 0x30000000,
FIRST_SYNTHETIC_EVENT = DEVICE_ADDED,
};
virtual Flags<InputDeviceClass> getDeviceClasses(int32_t deviceId) const = 0;
virtual InputDeviceIdentifier getDeviceIdentifier(int32_t deviceId) const = 0;
virtual int32_t getDeviceControllerNumber(int32_t deviceId) const = 0;
virtual void getConfiguration(int32_t deviceId, PropertyMap* outConfiguration) const = 0;
virtual status_t getAbsoluteAxisInfo(int32_t deviceId, int axis,
RawAbsoluteAxisInfo* outAxisInfo) const = 0;
virtual bool hasRelativeAxis(int32_t deviceId, int axis) const = 0;
virtual bool hasInputProperty(int32_t deviceId, int property) const = 0;
virtual bool hasMscEvent(int32_t deviceId, int mscEvent) const = 0;
virtual status_t mapKey(int32_t deviceId, int32_t scanCode, int32_t usageCode,
int32_t metaState, int32_t* outKeycode, int32_t* outMetaState,
uint32_t* outFlags) const = 0;
virtual status_t mapAxis(int32_t deviceId, int32_t scanCode, AxisInfo* outAxisInfo) const = 0;
// Sets devices that are excluded from opening.
// This can be used to ignore input devices for sensors.
virtual void setExcludedDevices(const std::vector<std::string>& devices) = 0;
/*
* Wait for events to become available and returns them.
* After returning, the EventHub holds onto a wake lock until the next call to getEvent.
* This ensures that the device will not go to sleep while the event is being processed.
* If the device needs to remain awake longer than that, then the caller is responsible
* for taking care of it (say, by poking the power manager user activity timer).
*
* The timeout is advisory only. If the device is asleep, it will not wake just to
* service the timeout.
*
* Returns the number of events obtained, or 0 if the timeout expired.
*/
virtual size_t getEvents(int timeoutMillis, RawEvent* buffer, size_t bufferSize) = 0;
virtual std::vector<TouchVideoFrame> getVideoFrames(int32_t deviceId) = 0;
virtual base::Result<std::pair<InputDeviceSensorType, int32_t>> mapSensor(int32_t deviceId,
int32_t absCode) = 0;
// Raw batteries are sysfs power_supply nodes we found from the EventHub device sysfs node,
// containing the raw info of the sysfs node structure.
virtual const std::vector<int32_t> getRawBatteryIds(int32_t deviceId) = 0;
virtual std::optional<RawBatteryInfo> getRawBatteryInfo(int32_t deviceId,
int32_t BatteryId) = 0;
// Raw lights are sysfs led light nodes we found from the EventHub device sysfs node,
// containing the raw info of the sysfs node structure.
virtual const std::vector<int32_t> getRawLightIds(int32_t deviceId) = 0;
virtual std::optional<RawLightInfo> getRawLightInfo(int32_t deviceId, int32_t lightId) = 0;
virtual std::optional<int32_t> getLightBrightness(int32_t deviceId, int32_t lightId) = 0;
virtual void setLightBrightness(int32_t deviceId, int32_t lightId, int32_t brightness) = 0;
virtual std::optional<std::unordered_map<LightColor, int32_t>> getLightIntensities(
int32_t deviceId, int32_t lightId) = 0;
virtual void setLightIntensities(int32_t deviceId, int32_t lightId,
std::unordered_map<LightColor, int32_t> intensities) = 0;
/*
* Query current input state.
*/
virtual int32_t getScanCodeState(int32_t deviceId, int32_t scanCode) const = 0;
virtual int32_t getKeyCodeState(int32_t deviceId, int32_t keyCode) const = 0;
virtual int32_t getSwitchState(int32_t deviceId, int32_t sw) const = 0;
virtual status_t getAbsoluteAxisValue(int32_t deviceId, int32_t axis,
int32_t* outValue) const = 0;
/*
* Examine key input devices for specific framework keycode support
*/
virtual bool markSupportedKeyCodes(int32_t deviceId, size_t numCodes, const int32_t* keyCodes,
uint8_t* outFlags) const = 0;
virtual bool hasScanCode(int32_t deviceId, int32_t scanCode) const = 0;
/* LED related functions expect Android LED constants, not scan codes or HID usages */
virtual bool hasLed(int32_t deviceId, int32_t led) const = 0;
virtual void setLedState(int32_t deviceId, int32_t led, bool on) = 0;
virtual void getVirtualKeyDefinitions(
int32_t deviceId, std::vector<VirtualKeyDefinition>& outVirtualKeys) const = 0;
virtual const std::shared_ptr<KeyCharacterMap> getKeyCharacterMap(int32_t deviceId) const = 0;
virtual bool setKeyboardLayoutOverlay(int32_t deviceId,
std::shared_ptr<KeyCharacterMap> map) = 0;
/* Control the vibrator. */
virtual void vibrate(int32_t deviceId, const VibrationElement& effect) = 0;
virtual void cancelVibrate(int32_t deviceId) = 0;
virtual std::vector<int32_t> getVibratorIds(int32_t deviceId) = 0;
/* Query battery level. */
virtual std::optional<int32_t> getBatteryCapacity(int32_t deviceId,
int32_t batteryId) const = 0;
/* Query battery status. */
virtual std::optional<int32_t> getBatteryStatus(int32_t deviceId, int32_t batteryId) const = 0;
/* Requests the EventHub to reopen all input devices on the next call to getEvents(). */
virtual void requestReopenDevices() = 0;
/* Wakes up getEvents() if it is blocked on a read. */
virtual void wake() = 0;
/* Dump EventHub state to a string. */
virtual void dump(std::string& dump) = 0;
/* Called by the heatbeat to ensures that the reader has not deadlocked. */
virtual void monitor() = 0;
/* Return true if the device is enabled. */
virtual bool isDeviceEnabled(int32_t deviceId) = 0;
/* Enable an input device */
virtual status_t enableDevice(int32_t deviceId) = 0;
/* Disable an input device. Closes file descriptor to that device. */
virtual status_t disableDevice(int32_t deviceId) = 0;
};
template <std::size_t BITS>
class BitArray {
/* Array element type and vector of element type. */
using Element = std::uint32_t;
/* Number of bits in each BitArray element. */
static constexpr size_t WIDTH = sizeof(Element) * CHAR_BIT;
/* Number of elements to represent a bit array of the specified size of bits. */
static constexpr size_t COUNT = (BITS + WIDTH - 1) / WIDTH;
public:
/* BUFFER type declaration for BitArray */
using Buffer = std::array<Element, COUNT>;
/* To tell if a bit is set in array, it selects an element from the array, and test
* if the relevant bit set.
* Note the parameter "bit" is an index to the bit, 0 <= bit < BITS.
*/
inline bool test(size_t bit) const {
return (bit < BITS) ? mData[bit / WIDTH].test(bit % WIDTH) : false;
}
/* Returns total number of bytes needed for the array */
inline size_t bytes() { return (BITS + CHAR_BIT - 1) / CHAR_BIT; }
/* Returns true if array contains any non-zero bit from the range defined by start and end
* bit index [startIndex, endIndex).
*/
bool any(size_t startIndex, size_t endIndex) {
if (startIndex >= endIndex || startIndex > BITS || endIndex > BITS + 1) {
ALOGE("Invalid start/end index. start = %zu, end = %zu, total bits = %zu", startIndex,
endIndex, BITS);
return false;
}
size_t se = startIndex / WIDTH; // Start of element
size_t ee = endIndex / WIDTH; // End of element
size_t si = startIndex % WIDTH; // Start index in start element
size_t ei = endIndex % WIDTH; // End index in end element
// Need to check first unaligned bitset for any non zero bit
if (si > 0) {
size_t nBits = se == ee ? ei - si : WIDTH - si;
// Generate the mask of interested bit range
Element mask = ((1 << nBits) - 1) << si;
if (mData[se++].to_ulong() & mask) {
return true;
}
}
// Check whole bitset for any bit set
for (; se < ee; se++) {
if (mData[se].any()) {
return true;
}
}
// Need to check last unaligned bitset for any non zero bit
if (ei > 0 && se <= ee) {
// Generate the mask of interested bit range
Element mask = (1 << ei) - 1;
if (mData[se].to_ulong() & mask) {
return true;
}
}
return false;
}
/* Load bit array values from buffer */
void loadFromBuffer(const Buffer& buffer) {
for (size_t i = 0; i < COUNT; i++) {
mData[i] = std::bitset<WIDTH>(buffer[i]);
}
}
private:
std::array<std::bitset<WIDTH>, COUNT> mData;
};
class EventHub : public EventHubInterface {
public:
EventHub();
Flags<InputDeviceClass> getDeviceClasses(int32_t deviceId) const override final;
InputDeviceIdentifier getDeviceIdentifier(int32_t deviceId) const override final;
int32_t getDeviceControllerNumber(int32_t deviceId) const override final;
void getConfiguration(int32_t deviceId, PropertyMap* outConfiguration) const override final;
status_t getAbsoluteAxisInfo(int32_t deviceId, int axis,
RawAbsoluteAxisInfo* outAxisInfo) const override final;
bool hasRelativeAxis(int32_t deviceId, int axis) const override final;
bool hasInputProperty(int32_t deviceId, int property) const override final;
bool hasMscEvent(int32_t deviceId, int mscEvent) const override final;
status_t mapKey(int32_t deviceId, int32_t scanCode, int32_t usageCode, int32_t metaState,
int32_t* outKeycode, int32_t* outMetaState,
uint32_t* outFlags) const override final;
status_t mapAxis(int32_t deviceId, int32_t scanCode,
AxisInfo* outAxisInfo) const override final;
base::Result<std::pair<InputDeviceSensorType, int32_t>> mapSensor(
int32_t deviceId, int32_t absCode) override final;
const std::vector<int32_t> getRawBatteryIds(int32_t deviceId) override final;
std::optional<RawBatteryInfo> getRawBatteryInfo(int32_t deviceId,
int32_t BatteryId) override final;
const std::vector<int32_t> getRawLightIds(int32_t deviceId) override final;
std::optional<RawLightInfo> getRawLightInfo(int32_t deviceId, int32_t lightId) override final;
std::optional<int32_t> getLightBrightness(int32_t deviceId, int32_t lightId) override final;
void setLightBrightness(int32_t deviceId, int32_t lightId, int32_t brightness) override final;
std::optional<std::unordered_map<LightColor, int32_t>> getLightIntensities(
int32_t deviceId, int32_t lightId) override final;
void setLightIntensities(int32_t deviceId, int32_t lightId,
std::unordered_map<LightColor, int32_t> intensities) override final;
void setExcludedDevices(const std::vector<std::string>& devices) override final;
int32_t getScanCodeState(int32_t deviceId, int32_t scanCode) const override final;
int32_t getKeyCodeState(int32_t deviceId, int32_t keyCode) const override final;
int32_t getSwitchState(int32_t deviceId, int32_t sw) const override final;
status_t getAbsoluteAxisValue(int32_t deviceId, int32_t axis,
int32_t* outValue) const override final;
bool markSupportedKeyCodes(int32_t deviceId, size_t numCodes, const int32_t* keyCodes,
uint8_t* outFlags) const override final;
size_t getEvents(int timeoutMillis, RawEvent* buffer, size_t bufferSize) override final;
std::vector<TouchVideoFrame> getVideoFrames(int32_t deviceId) override final;
bool hasScanCode(int32_t deviceId, int32_t scanCode) const override final;
bool hasLed(int32_t deviceId, int32_t led) const override final;
void setLedState(int32_t deviceId, int32_t led, bool on) override final;
void getVirtualKeyDefinitions(
int32_t deviceId,
std::vector<VirtualKeyDefinition>& outVirtualKeys) const override final;
const std::shared_ptr<KeyCharacterMap> getKeyCharacterMap(
int32_t deviceId) const override final;
bool setKeyboardLayoutOverlay(int32_t deviceId,
std::shared_ptr<KeyCharacterMap> map) override final;
void vibrate(int32_t deviceId, const VibrationElement& effect) override final;
void cancelVibrate(int32_t deviceId) override final;
std::vector<int32_t> getVibratorIds(int32_t deviceId) override final;
void requestReopenDevices() override final;
void wake() override final;
void dump(std::string& dump) override final;
void monitor() override final;
std::optional<int32_t> getBatteryCapacity(int32_t deviceId,
int32_t batteryId) const override final;
std::optional<int32_t> getBatteryStatus(int32_t deviceId,
int32_t batteryId) const override final;
bool isDeviceEnabled(int32_t deviceId) override final;
status_t enableDevice(int32_t deviceId) override final;
status_t disableDevice(int32_t deviceId) override final;
~EventHub() override;
private:
struct AssociatedDevice {
// The device descriptor from evdev device the misc device associated with.
std::string descriptor;
// The sysfs root path of the misc device.
std::filesystem::path sysfsRootPath;
int32_t nextBatteryId;
int32_t nextLightId;
std::unordered_map<int32_t, RawBatteryInfo> batteryInfos;
std::unordered_map<int32_t, RawLightInfo> lightInfos;
explicit AssociatedDevice(std::filesystem::path sysfsRootPath)
: sysfsRootPath(sysfsRootPath), nextBatteryId(0), nextLightId(0) {}
bool configureBatteryLocked();
bool configureLightsLocked();
};
struct Device {
int fd; // may be -1 if device is closed
const int32_t id;
const std::string path;
const InputDeviceIdentifier identifier;
std::unique_ptr<TouchVideoDevice> videoDevice;
Flags<InputDeviceClass> classes;
BitArray<KEY_MAX> keyBitmask;
BitArray<KEY_MAX> keyState;
BitArray<ABS_MAX> absBitmask;
BitArray<REL_MAX> relBitmask;
BitArray<SW_MAX> swBitmask;
BitArray<SW_MAX> swState;
BitArray<LED_MAX> ledBitmask;
BitArray<FF_MAX> ffBitmask;
BitArray<INPUT_PROP_MAX> propBitmask;
BitArray<MSC_MAX> mscBitmask;
std::string configurationFile;
std::unique_ptr<PropertyMap> configuration;
std::unique_ptr<VirtualKeyMap> virtualKeyMap;
KeyMap keyMap;
bool ffEffectPlaying;
int16_t ffEffectId; // initially -1
// A shared_ptr of a device associated with the input device.
// The input devices with same descriptor has the same associated device.
std::shared_ptr<AssociatedDevice> associatedDevice;
int32_t controllerNumber;
Device(int fd, int32_t id, const std::string& path,
const InputDeviceIdentifier& identifier);
~Device();
void close();
bool enabled; // initially true
status_t enable();
status_t disable();
bool hasValidFd() const;
const bool isVirtual; // set if fd < 0 is passed to constructor
const std::shared_ptr<KeyCharacterMap> getKeyCharacterMap() const;
template <std::size_t N>
status_t readDeviceBitMask(unsigned long ioctlCode, BitArray<N>& bitArray);
void configureFd();
bool hasKeycodeLocked(int keycode) const;
void loadConfigurationLocked();
bool loadVirtualKeyMapLocked();
status_t loadKeyMapLocked();
bool isExternalDeviceLocked();
bool deviceHasMicLocked();
void setLedForControllerLocked();
status_t mapLed(int32_t led, int32_t* outScanCode) const;
void setLedStateLocked(int32_t led, bool on);
};
/**
* Create a new device for the provided path.
*/
void openDeviceLocked(const std::string& devicePath) REQUIRES(mLock);
void openVideoDeviceLocked(const std::string& devicePath) REQUIRES(mLock);
/**
* Try to associate a video device with an input device. If the association succeeds,
* the videoDevice is moved into the input device. 'videoDevice' will become null if this
* happens.
* Return true if the association succeeds.
* Return false otherwise.
*/
bool tryAddVideoDeviceLocked(Device& device, std::unique_ptr<TouchVideoDevice>& videoDevice)
REQUIRES(mLock);
void createVirtualKeyboardLocked() REQUIRES(mLock);
void addDeviceLocked(std::unique_ptr<Device> device) REQUIRES(mLock);
void assignDescriptorLocked(InputDeviceIdentifier& identifier) REQUIRES(mLock);
void closeDeviceByPathLocked(const std::string& devicePath) REQUIRES(mLock);
void closeVideoDeviceByPathLocked(const std::string& devicePath) REQUIRES(mLock);
void closeDeviceLocked(Device& device) REQUIRES(mLock);
void closeAllDevicesLocked() REQUIRES(mLock);
status_t registerFdForEpoll(int fd);
status_t unregisterFdFromEpoll(int fd);
status_t registerDeviceForEpollLocked(Device& device) REQUIRES(mLock);
void registerVideoDeviceForEpollLocked(const TouchVideoDevice& videoDevice) REQUIRES(mLock);
status_t unregisterDeviceFromEpollLocked(Device& device) REQUIRES(mLock);
void unregisterVideoDeviceFromEpollLocked(const TouchVideoDevice& videoDevice) REQUIRES(mLock);
status_t scanDirLocked(const std::string& dirname) REQUIRES(mLock);
status_t scanVideoDirLocked(const std::string& dirname) REQUIRES(mLock);
void scanDevicesLocked() REQUIRES(mLock);
status_t readNotifyLocked() REQUIRES(mLock);
Device* getDeviceByDescriptorLocked(const std::string& descriptor) const REQUIRES(mLock);
Device* getDeviceLocked(int32_t deviceId) const REQUIRES(mLock);
Device* getDeviceByPathLocked(const std::string& devicePath) const REQUIRES(mLock);
/**
* Look through all available fd's (both for input devices and for video devices),
* and return the device pointer.
*/
Device* getDeviceByFdLocked(int fd) const REQUIRES(mLock);
int32_t getNextControllerNumberLocked(const std::string& name) REQUIRES(mLock);
void releaseControllerNumberLocked(int32_t num) REQUIRES(mLock);
void reportDeviceAddedForStatisticsLocked(const InputDeviceIdentifier& identifier,
Flags<InputDeviceClass> classes) REQUIRES(mLock);
const std::unordered_map<int32_t, RawBatteryInfo>& getBatteryInfoLocked(int32_t deviceId) const
REQUIRES(mLock);
const std::unordered_map<int32_t, RawLightInfo>& getLightInfoLocked(int32_t deviceId) const
REQUIRES(mLock);
// Protect all internal state.
mutable std::mutex mLock;
// The actual id of the built-in keyboard, or NO_BUILT_IN_KEYBOARD if none.
// EventHub remaps the built-in keyboard to id 0 externally as required by the API.
enum {
// Must not conflict with any other assigned device ids, including
// the virtual keyboard id (-1).
NO_BUILT_IN_KEYBOARD = -2,
};
int32_t mBuiltInKeyboardId;
int32_t mNextDeviceId;
BitSet32 mControllerNumbers;
std::unordered_map<int32_t, std::unique_ptr<Device>> mDevices;
/**
* Video devices that report touchscreen heatmap, but have not (yet) been paired
* with a specific input device. Video device discovery is independent from input device
* discovery, so the two types of devices could be found in any order.
* Ideally, video devices in this queue do not have an open fd, or at least aren't
* actively streaming.
*/
std::vector<std::unique_ptr<TouchVideoDevice>> mUnattachedVideoDevices;
std::vector<std::unique_ptr<Device>> mOpeningDevices;
std::vector<std::unique_ptr<Device>> mClosingDevices;
bool mNeedToSendFinishedDeviceScan;
bool mNeedToReopenDevices;
bool mNeedToScanDevices;
std::vector<std::string> mExcludedDevices;
int mEpollFd;
int mINotifyFd;
int mWakeReadPipeFd;
int mWakeWritePipeFd;
int mInputWd;
int mVideoWd;
// Maximum number of signalled FDs to handle at a time.
static const int EPOLL_MAX_EVENTS = 16;
// The array of pending epoll events and the index of the next event to be handled.
struct epoll_event mPendingEventItems[EPOLL_MAX_EVENTS];
size_t mPendingEventCount;
size_t mPendingEventIndex;
bool mPendingINotify;
};
}; // namespace android
#endif // _RUNTIME_EVENT_HUB_H