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Diffstat (limited to 'include/ui/EventHub.h')
| -rw-r--r-- | include/ui/EventHub.h | 298 |
1 files changed, 0 insertions, 298 deletions
diff --git a/include/ui/EventHub.h b/include/ui/EventHub.h deleted file mode 100644 index d78e35f..0000000 --- a/include/ui/EventHub.h +++ /dev/null @@ -1,298 +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 <android/input.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 <linux/input.h> - -/* These constants are not defined in linux/input.h but they are part of the multitouch - * input protocol. */ - -#define ABS_MT_TOUCH_MAJOR 0x30 /* Major axis of touching ellipse */ -#define ABS_MT_TOUCH_MINOR 0x31 /* Minor axis (omit if circular) */ -#define ABS_MT_WIDTH_MAJOR 0x32 /* Major axis of approaching ellipse */ -#define ABS_MT_WIDTH_MINOR 0x33 /* Minor axis (omit if circular) */ -#define ABS_MT_ORIENTATION 0x34 /* Ellipse orientation */ -#define ABS_MT_POSITION_X 0x35 /* Center X ellipse position */ -#define ABS_MT_POSITION_Y 0x36 /* Center Y ellipse position */ -#define ABS_MT_TOOL_TYPE 0x37 /* Type of touching device (finger, pen, ...) */ -#define ABS_MT_BLOB_ID 0x38 /* Group a set of packets as a blob */ -#define ABS_MT_TRACKING_ID 0x39 /* Unique ID of initiated contact */ -#define ABS_MT_PRESSURE 0x3a /* Pressure on contact area */ - -#define MT_TOOL_FINGER 0 /* Identifies a finger */ -#define MT_TOOL_PEN 1 /* Identifies a pen */ - -#define SYN_MT_REPORT 2 - -/* Convenience constants. */ - -#define BTN_FIRST 0x100 // first button scancode -#define BTN_LAST 0x15f // last button scancode - -struct pollfd; - -namespace android { - -class KeyLayoutMap; - -/* - * A raw event as retrieved from the EventHub. - */ -struct RawEvent { - nsecs_t when; - int32_t deviceId; - int32_t type; - int32_t scanCode; - int32_t keyCode; - int32_t value; - uint32_t flags; -}; - -/* 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 - - inline int32_t getRange() { return maxValue - minValue; } - - inline void clear() { - valid = false; - minValue = 0; - maxValue = 0; - flat = 0; - fuzz = 0; - } -}; - -/* - * Input device classes. - */ -enum { - /* The input device is a keyboard. */ - 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 (either single-touch or multi-touch). */ - INPUT_DEVICE_CLASS_TOUCHSCREEN = 0x00000004, - - /* The input device is a trackball. */ - INPUT_DEVICE_CLASS_TRACKBALL = 0x00000008, - - /* The input device is a multi-touch touchscreen. */ - INPUT_DEVICE_CLASS_TOUCHSCREEN_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, -}; - -/* - * 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 provies 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, - }; - - virtual uint32_t getDeviceClasses(int32_t deviceId) const = 0; - - virtual String8 getDeviceName(int32_t deviceId) const = 0; - - virtual status_t getAbsoluteAxisInfo(int32_t deviceId, int axis, - RawAbsoluteAxisInfo* outAxisInfo) const = 0; - - virtual status_t scancodeToKeycode(int32_t deviceId, int scancode, - int32_t* outKeycode, uint32_t* outFlags) const = 0; - - // exclude a particular device from opening - // this can be used to ignore input devices for sensors - virtual void addExcludedDevice(const char* deviceName) = 0; - - /* - * Wait for the next event to become available and return it. - * 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). - */ - virtual bool getEvent(RawEvent* outEvent) = 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; - - /* - * 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 void dump(String8& dump) = 0; -}; - -class EventHub : public EventHubInterface -{ -public: - EventHub(); - - status_t errorCheck() const; - - virtual uint32_t getDeviceClasses(int32_t deviceId) const; - - virtual String8 getDeviceName(int32_t deviceId) const; - - virtual status_t getAbsoluteAxisInfo(int32_t deviceId, int axis, - RawAbsoluteAxisInfo* outAxisInfo) const; - - virtual status_t scancodeToKeycode(int32_t deviceId, int scancode, - int32_t* outKeycode, uint32_t* outFlags) const; - - virtual void addExcludedDevice(const char* deviceName); - - 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 bool markSupportedKeyCodes(int32_t deviceId, size_t numCodes, - const int32_t* keyCodes, uint8_t* outFlags) const; - - virtual bool getEvent(RawEvent* outEvent); - - virtual void dump(String8& dump); - -protected: - virtual ~EventHub(); - -private: - bool openPlatformInput(void); - - int openDevice(const char *device); - int closeDevice(const char *device); - int scanDir(const char *dirname); - int readNotify(int nfd); - - status_t mError; - - struct device_t { - const int32_t id; - const String8 path; - String8 name; - uint32_t classes; - uint8_t* keyBitmask; - KeyLayoutMap* layoutMap; - String8 keylayoutFilename; - int fd; - device_t* next; - - device_t(int32_t _id, const char* _path, const char* name); - ~device_t(); - }; - - device_t* getDeviceLocked(int32_t deviceId) const; - bool hasKeycodeLocked(device_t* device, int keycode) const; - - int32_t getScanCodeStateLocked(device_t* device, int32_t scanCode) const; - int32_t getKeyCodeStateLocked(device_t* device, int32_t keyCode) const; - int32_t getSwitchStateLocked(device_t* device, int32_t sw) const; - bool markSupportedKeyCodesLocked(device_t* device, size_t numCodes, - const int32_t* keyCodes, uint8_t* outFlags) const; - - // Protect all internal state. - mutable Mutex mLock; - - bool mHaveFirstKeyboard; - int32_t mFirstKeyboardId; // the API is that the built-in keyboard is id 0, so map it - - struct device_ent { - device_t* device; - uint32_t seq; - }; - device_ent *mDevicesById; - int mNumDevicesById; - - device_t *mOpeningDevices; - device_t *mClosingDevices; - - device_t **mDevices; - struct pollfd *mFDs; - int mFDCount; - - bool mOpened; - bool mNeedToSendFinishedDeviceScan; - List<String8> mExcludedDevices; - - // device ids that report particular switches. -#ifdef EV_SW - int32_t mSwitches[SW_MAX + 1]; -#endif - - static const int INPUT_BUFFER_SIZE = 64; - struct input_event mInputBufferData[INPUT_BUFFER_SIZE]; - int32_t mInputBufferIndex; - int32_t mInputBufferCount; - int32_t mInputDeviceIndex; -}; - -}; // namespace android - -#endif // _RUNTIME_EVENT_HUB_H |