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Diffstat (limited to 'services/input/EventHub.h')
| -rw-r--r-- | services/input/EventHub.h | 447 |
1 files changed, 0 insertions, 447 deletions
diff --git a/services/input/EventHub.h b/services/input/EventHub.h deleted file mode 100644 index ae28f01..0000000 --- a/services/input/EventHub.h +++ /dev/null @@ -1,447 +0,0 @@ -/* - * 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 <input/Input.h> -#include <input/InputDevice.h> -#include <input/Keyboard.h> -#include <input/KeyLayoutMap.h> -#include <input/KeyCharacterMap.h> -#include <input/VirtualKeyMap.h> -#include <utils/String8.h> -#include <utils/threads.h> -#include <utils/Log.h> -#include <utils/threads.h> -#include <utils/List.h> -#include <utils/Errors.h> -#include <utils/PropertyMap.h> -#include <utils/Vector.h> -#include <utils/KeyedVector.h> -#include <utils/BitSet.h> - -#include <linux/input.h> -#include <sys/epoll.h> - -/* Convenience constants. */ - -#define BTN_FIRST 0x100 // first button code -#define BTN_LAST 0x15f // last button code - -/* - * These constants are used privately in Android to pass raw timestamps - * through evdev from uinput device drivers because there is currently no - * other way to transfer this information. The evdev driver automatically - * timestamps all input events with the time they were posted and clobbers - * whatever information was passed in. - * - * For the purposes of this hack, the timestamp is specified in the - * CLOCK_MONOTONIC timebase and is split into two EV_MSC events specifying - * seconds and microseconds. - */ -#define MSC_ANDROID_TIME_SEC 0x6 -#define MSC_ANDROID_TIME_USEC 0x7 - -namespace android { - -enum { - // Device id of a special "virtual" keyboard that is always present. - VIRTUAL_KEYBOARD_ID = -1, - // Device id of the "built-in" keyboard if there is one. - BUILT_IN_KEYBOARD_ID = 0, -}; - -/* - * A raw event as retrieved from the EventHub. - */ -struct RawEvent { - nsecs_t when; - 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 { - /* The input device is a keyboard or has buttons. */ - INPUT_DEVICE_CLASS_KEYBOARD = 0x00000001, - - /* The input device is an alpha-numeric keyboard (not just a dial pad). */ - INPUT_DEVICE_CLASS_ALPHAKEY = 0x00000002, - - /* The input device is a touchscreen or a touchpad (either single-touch or multi-touch). */ - INPUT_DEVICE_CLASS_TOUCH = 0x00000004, - - /* The input device is a cursor device such as a trackball or mouse. */ - INPUT_DEVICE_CLASS_CURSOR = 0x00000008, - - /* The input device is a multi-touch touchscreen. */ - INPUT_DEVICE_CLASS_TOUCH_MT = 0x00000010, - - /* The input device is a directional pad (implies keyboard, has DPAD keys). */ - INPUT_DEVICE_CLASS_DPAD = 0x00000020, - - /* The input device is a gamepad (implies keyboard, has BUTTON keys). */ - INPUT_DEVICE_CLASS_GAMEPAD = 0x00000040, - - /* The input device has switches. */ - INPUT_DEVICE_CLASS_SWITCH = 0x00000080, - - /* The input device is a joystick (implies gamepad, has joystick absolute axes). */ - INPUT_DEVICE_CLASS_JOYSTICK = 0x00000100, - - /* The input device has a vibrator (supports FF_RUMBLE). */ - INPUT_DEVICE_CLASS_VIBRATOR = 0x00000200, - - /* The input device is virtual (not a real device, not part of UI configuration). */ - INPUT_DEVICE_CLASS_VIRTUAL = 0x40000000, - - /* The input device is external (not built-in). */ - INPUT_DEVICE_CLASS_EXTERNAL = 0x80000000, -}; - -/* - * Gets the class that owns an axis, in cases where multiple classes might claim - * the same axis for different purposes. - */ -extern uint32_t getAbsAxisUsage(int32_t axis, uint32_t 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 virtual RefBase { -protected: - EventHubInterface() { } - virtual ~EventHubInterface() { } - -public: - // 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 uint32_t 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 status_t mapKey(int32_t deviceId, int32_t scanCode, int32_t usageCode, - int32_t* outKeycode, 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 Vector<String8>& 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; - - /* - * 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; - 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, - Vector<VirtualKeyDefinition>& outVirtualKeys) const = 0; - - virtual sp<KeyCharacterMap> getKeyCharacterMap(int32_t deviceId) const = 0; - virtual bool setKeyboardLayoutOverlay(int32_t deviceId, const sp<KeyCharacterMap>& map) = 0; - - /* Control the vibrator. */ - virtual void vibrate(int32_t deviceId, nsecs_t duration) = 0; - virtual void cancelVibrate(int32_t deviceId) = 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(String8& dump) = 0; - - /* Called by the heatbeat to ensures that the reader has not deadlocked. */ - virtual void monitor() = 0; -}; - -class EventHub : public EventHubInterface -{ -public: - EventHub(); - - virtual uint32_t getDeviceClasses(int32_t deviceId) const; - - virtual InputDeviceIdentifier getDeviceIdentifier(int32_t deviceId) const; - - virtual int32_t getDeviceControllerNumber(int32_t deviceId) const; - - virtual void getConfiguration(int32_t deviceId, PropertyMap* outConfiguration) const; - - virtual status_t getAbsoluteAxisInfo(int32_t deviceId, int axis, - RawAbsoluteAxisInfo* outAxisInfo) const; - - virtual bool hasRelativeAxis(int32_t deviceId, int axis) const; - - virtual bool hasInputProperty(int32_t deviceId, int property) const; - - virtual status_t mapKey(int32_t deviceId, int32_t scanCode, int32_t usageCode, - int32_t* outKeycode, uint32_t* outFlags) const; - - virtual status_t mapAxis(int32_t deviceId, int32_t scanCode, - AxisInfo* outAxisInfo) const; - - virtual void setExcludedDevices(const Vector<String8>& devices); - - virtual int32_t getScanCodeState(int32_t deviceId, int32_t scanCode) const; - virtual int32_t getKeyCodeState(int32_t deviceId, int32_t keyCode) const; - virtual int32_t getSwitchState(int32_t deviceId, int32_t sw) const; - virtual status_t getAbsoluteAxisValue(int32_t deviceId, int32_t axis, int32_t* outValue) const; - - virtual bool markSupportedKeyCodes(int32_t deviceId, size_t numCodes, - const int32_t* keyCodes, uint8_t* outFlags) const; - - virtual size_t getEvents(int timeoutMillis, RawEvent* buffer, size_t bufferSize); - - virtual bool hasScanCode(int32_t deviceId, int32_t scanCode) const; - virtual bool hasLed(int32_t deviceId, int32_t led) const; - virtual void setLedState(int32_t deviceId, int32_t led, bool on); - - virtual void getVirtualKeyDefinitions(int32_t deviceId, - Vector<VirtualKeyDefinition>& outVirtualKeys) const; - - virtual sp<KeyCharacterMap> getKeyCharacterMap(int32_t deviceId) const; - virtual bool setKeyboardLayoutOverlay(int32_t deviceId, const sp<KeyCharacterMap>& map); - - virtual void vibrate(int32_t deviceId, nsecs_t duration); - virtual void cancelVibrate(int32_t deviceId); - - virtual void requestReopenDevices(); - - virtual void wake(); - - virtual void dump(String8& dump); - virtual void monitor(); - -protected: - virtual ~EventHub(); - -private: - struct Device { - Device* next; - - int fd; // may be -1 if device is virtual - const int32_t id; - const String8 path; - const InputDeviceIdentifier identifier; - - uint32_t classes; - - uint8_t keyBitmask[(KEY_MAX + 1) / 8]; - uint8_t absBitmask[(ABS_MAX + 1) / 8]; - uint8_t relBitmask[(REL_MAX + 1) / 8]; - uint8_t swBitmask[(SW_MAX + 1) / 8]; - uint8_t ledBitmask[(LED_MAX + 1) / 8]; - uint8_t ffBitmask[(FF_MAX + 1) / 8]; - uint8_t propBitmask[(INPUT_PROP_MAX + 1) / 8]; - - String8 configurationFile; - PropertyMap* configuration; - VirtualKeyMap* virtualKeyMap; - KeyMap keyMap; - - sp<KeyCharacterMap> overlayKeyMap; - sp<KeyCharacterMap> combinedKeyMap; - - bool ffEffectPlaying; - int16_t ffEffectId; // initially -1 - - int32_t controllerNumber; - - int32_t timestampOverrideSec; - int32_t timestampOverrideUsec; - - Device(int fd, int32_t id, const String8& path, const InputDeviceIdentifier& identifier); - ~Device(); - - void close(); - - inline bool isVirtual() const { return fd < 0; } - - const sp<KeyCharacterMap>& getKeyCharacterMap() const { - if (combinedKeyMap != NULL) { - return combinedKeyMap; - } - return keyMap.keyCharacterMap; - } - }; - - status_t openDeviceLocked(const char *devicePath); - void createVirtualKeyboardLocked(); - void addDeviceLocked(Device* device); - - status_t closeDeviceByPathLocked(const char *devicePath); - void closeDeviceLocked(Device* device); - void closeAllDevicesLocked(); - - status_t scanDirLocked(const char *dirname); - void scanDevicesLocked(); - status_t readNotifyLocked(); - - Device* getDeviceLocked(int32_t deviceId) const; - Device* getDeviceByPathLocked(const char* devicePath) const; - - bool hasKeycodeLocked(Device* device, int keycode) const; - - void loadConfigurationLocked(Device* device); - status_t loadVirtualKeyMapLocked(Device* device); - status_t loadKeyMapLocked(Device* device); - - bool isExternalDeviceLocked(Device* device); - - int32_t getNextControllerNumberLocked(Device* device); - void releaseControllerNumberLocked(Device* device); - - // Protect all internal state. - mutable 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; - - KeyedVector<int32_t, Device*> mDevices; - - Device *mOpeningDevices; - Device *mClosingDevices; - - bool mNeedToSendFinishedDeviceScan; - bool mNeedToReopenDevices; - bool mNeedToScanDevices; - Vector<String8> mExcludedDevices; - - int mEpollFd; - int mINotifyFd; - int mWakeReadPipeFd; - int mWakeWritePipeFd; - - // Ids used for epoll notifications not associated with devices. - static const uint32_t EPOLL_ID_INOTIFY = 0x80000001; - static const uint32_t EPOLL_ID_WAKE = 0x80000002; - - // Epoll FD list size hint. - static const int EPOLL_SIZE_HINT = 8; - - // 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 |