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Diffstat (limited to 'include/ui/InputReader.h')
| -rw-r--r-- | include/ui/InputReader.h | 927 |
1 files changed, 0 insertions, 927 deletions
diff --git a/include/ui/InputReader.h b/include/ui/InputReader.h deleted file mode 100644 index 49351b0..0000000 --- a/include/ui/InputReader.h +++ /dev/null @@ -1,927 +0,0 @@ -/* - * Copyright (C) 2010 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 _UI_INPUT_READER_H -#define _UI_INPUT_READER_H - -#include <ui/EventHub.h> -#include <ui/Input.h> -#include <ui/InputDispatcher.h> -#include <utils/KeyedVector.h> -#include <utils/threads.h> -#include <utils/Timers.h> -#include <utils/RefBase.h> -#include <utils/String8.h> -#include <utils/BitSet.h> - -#include <stddef.h> -#include <unistd.h> - -namespace android { - -class InputDevice; -class InputMapper; - -/* Describes a virtual key. */ -struct VirtualKeyDefinition { - int32_t scanCode; - - // configured position data, specified in display coords - int32_t centerX; - int32_t centerY; - int32_t width; - int32_t height; -}; - - -/* Specifies input device calibration settings. */ -class InputDeviceCalibration { -public: - InputDeviceCalibration(); - - void clear(); - void addProperty(const String8& key, const String8& value); - - bool tryGetProperty(const String8& key, String8& outValue) const; - bool tryGetProperty(const String8& key, int32_t& outValue) const; - bool tryGetProperty(const String8& key, float& outValue) const; - -private: - KeyedVector<String8, String8> mProperties; -}; - - -/* - * Input reader policy interface. - * - * The input reader policy is used by the input reader to interact with the Window Manager - * and other system components. - * - * The actual implementation is partially supported by callbacks into the DVM - * via JNI. This interface is also mocked in the unit tests. - */ -class InputReaderPolicyInterface : public virtual RefBase { -protected: - InputReaderPolicyInterface() { } - virtual ~InputReaderPolicyInterface() { } - -public: - /* Display orientations. */ - enum { - ROTATION_0 = 0, - ROTATION_90 = 1, - ROTATION_180 = 2, - ROTATION_270 = 3 - }; - - /* Gets information about the display with the specified id. - * Returns true if the display info is available, false otherwise. - */ - virtual bool getDisplayInfo(int32_t displayId, - int32_t* width, int32_t* height, int32_t* orientation) = 0; - - /* Determines whether to turn on some hacks we have to improve the touch interaction with a - * certain device whose screen currently is not all that good. - */ - virtual bool filterTouchEvents() = 0; - - /* Determines whether to turn on some hacks to improve touch interaction with another device - * where touch coordinate data can get corrupted. - */ - virtual bool filterJumpyTouchEvents() = 0; - - /* Gets the configured virtual key definitions for an input device. */ - virtual void getVirtualKeyDefinitions(const String8& deviceName, - Vector<VirtualKeyDefinition>& outVirtualKeyDefinitions) = 0; - - /* Gets the calibration for an input device. */ - virtual void getInputDeviceCalibration(const String8& deviceName, - InputDeviceCalibration& outCalibration) = 0; - - /* Gets the excluded device names for the platform. */ - virtual void getExcludedDeviceNames(Vector<String8>& outExcludedDeviceNames) = 0; -}; - - -/* Processes raw input events and sends cooked event data to an input dispatcher. */ -class InputReaderInterface : public virtual RefBase { -protected: - InputReaderInterface() { } - virtual ~InputReaderInterface() { } - -public: - /* Dumps the state of the input reader. - * - * This method may be called on any thread (usually by the input manager). */ - virtual void dump(String8& dump) = 0; - - /* Runs a single iteration of the processing loop. - * Nominally reads and processes one incoming message from the EventHub. - * - * This method should be called on the input reader thread. - */ - virtual void loopOnce() = 0; - - /* Gets the current input device configuration. - * - * This method may be called on any thread (usually by the input manager). - */ - virtual void getInputConfiguration(InputConfiguration* outConfiguration) = 0; - - /* Gets information about the specified input device. - * Returns OK if the device information was obtained or NAME_NOT_FOUND if there - * was no such device. - * - * This method may be called on any thread (usually by the input manager). - */ - virtual status_t getInputDeviceInfo(int32_t deviceId, InputDeviceInfo* outDeviceInfo) = 0; - - /* Gets the list of all registered device ids. */ - virtual void getInputDeviceIds(Vector<int32_t>& outDeviceIds) = 0; - - /* Query current input state. */ - virtual int32_t getScanCodeState(int32_t deviceId, uint32_t sourceMask, - int32_t scanCode) = 0; - virtual int32_t getKeyCodeState(int32_t deviceId, uint32_t sourceMask, - int32_t keyCode) = 0; - virtual int32_t getSwitchState(int32_t deviceId, uint32_t sourceMask, - int32_t sw) = 0; - - /* Determine whether physical keys exist for the given framework-domain key codes. */ - virtual bool hasKeys(int32_t deviceId, uint32_t sourceMask, - size_t numCodes, const int32_t* keyCodes, uint8_t* outFlags) = 0; -}; - - -/* Internal interface used by individual input devices to access global input device state - * and parameters maintained by the input reader. - */ -class InputReaderContext { -public: - InputReaderContext() { } - virtual ~InputReaderContext() { } - - virtual void updateGlobalMetaState() = 0; - virtual int32_t getGlobalMetaState() = 0; - - virtual InputReaderPolicyInterface* getPolicy() = 0; - virtual InputDispatcherInterface* getDispatcher() = 0; - virtual EventHubInterface* getEventHub() = 0; -}; - - -/* The input reader reads raw event data from the event hub and processes it into input events - * that it sends to the input dispatcher. Some functions of the input reader, such as early - * event filtering in low power states, are controlled by a separate policy object. - * - * IMPORTANT INVARIANT: - * Because the policy and dispatcher can potentially block or cause re-entrance into - * the input reader, the input reader never calls into other components while holding - * an exclusive internal lock whenever re-entrance can happen. - */ -class InputReader : public InputReaderInterface, protected InputReaderContext { -public: - InputReader(const sp<EventHubInterface>& eventHub, - const sp<InputReaderPolicyInterface>& policy, - const sp<InputDispatcherInterface>& dispatcher); - virtual ~InputReader(); - - virtual void dump(String8& dump); - - virtual void loopOnce(); - - virtual void getInputConfiguration(InputConfiguration* outConfiguration); - - virtual status_t getInputDeviceInfo(int32_t deviceId, InputDeviceInfo* outDeviceInfo); - virtual void getInputDeviceIds(Vector<int32_t>& outDeviceIds); - - virtual int32_t getScanCodeState(int32_t deviceId, uint32_t sourceMask, - int32_t scanCode); - virtual int32_t getKeyCodeState(int32_t deviceId, uint32_t sourceMask, - int32_t keyCode); - virtual int32_t getSwitchState(int32_t deviceId, uint32_t sourceMask, - int32_t sw); - - virtual bool hasKeys(int32_t deviceId, uint32_t sourceMask, - size_t numCodes, const int32_t* keyCodes, uint8_t* outFlags); - -protected: - // These methods are protected virtual so they can be overridden and instrumented - // by test cases. - virtual InputDevice* createDevice(int32_t deviceId, const String8& name, uint32_t classes); - -private: - sp<EventHubInterface> mEventHub; - sp<InputReaderPolicyInterface> mPolicy; - sp<InputDispatcherInterface> mDispatcher; - - virtual InputReaderPolicyInterface* getPolicy() { return mPolicy.get(); } - virtual InputDispatcherInterface* getDispatcher() { return mDispatcher.get(); } - virtual EventHubInterface* getEventHub() { return mEventHub.get(); } - - // This reader/writer lock guards the list of input devices. - // The writer lock must be held whenever the list of input devices is modified - // and then promptly released. - // The reader lock must be held whenever the list of input devices is traversed or an - // input device in the list is accessed. - // This lock only protects the registry and prevents inadvertent deletion of device objects - // that are in use. Individual devices are responsible for guarding their own internal state - // as needed for concurrent operation. - RWLock mDeviceRegistryLock; - KeyedVector<int32_t, InputDevice*> mDevices; - - // low-level input event decoding and device management - void process(const RawEvent* rawEvent); - - void addDevice(int32_t deviceId); - void removeDevice(int32_t deviceId); - void configureExcludedDevices(); - - void consumeEvent(const RawEvent* rawEvent); - - void handleConfigurationChanged(nsecs_t when); - - // state management for all devices - Mutex mStateLock; - - int32_t mGlobalMetaState; - virtual void updateGlobalMetaState(); - virtual int32_t getGlobalMetaState(); - - InputConfiguration mInputConfiguration; - void updateInputConfiguration(); - - // state queries - typedef int32_t (InputDevice::*GetStateFunc)(uint32_t sourceMask, int32_t code); - int32_t getState(int32_t deviceId, uint32_t sourceMask, int32_t code, - GetStateFunc getStateFunc); - bool markSupportedKeyCodes(int32_t deviceId, uint32_t sourceMask, size_t numCodes, - const int32_t* keyCodes, uint8_t* outFlags); -}; - - -/* Reads raw events from the event hub and processes them, endlessly. */ -class InputReaderThread : public Thread { -public: - InputReaderThread(const sp<InputReaderInterface>& reader); - virtual ~InputReaderThread(); - -private: - sp<InputReaderInterface> mReader; - - virtual bool threadLoop(); -}; - - -/* Represents the state of a single input device. */ -class InputDevice { -public: - InputDevice(InputReaderContext* context, int32_t id, const String8& name); - ~InputDevice(); - - inline InputReaderContext* getContext() { return mContext; } - inline int32_t getId() { return mId; } - inline const String8& getName() { return mName; } - inline uint32_t getSources() { return mSources; } - - inline bool isIgnored() { return mMappers.isEmpty(); } - - void dump(String8& dump); - void addMapper(InputMapper* mapper); - void configure(); - void reset(); - void process(const RawEvent* rawEvent); - - void getDeviceInfo(InputDeviceInfo* outDeviceInfo); - int32_t getKeyCodeState(uint32_t sourceMask, int32_t keyCode); - int32_t getScanCodeState(uint32_t sourceMask, int32_t scanCode); - int32_t getSwitchState(uint32_t sourceMask, int32_t switchCode); - bool markSupportedKeyCodes(uint32_t sourceMask, size_t numCodes, - const int32_t* keyCodes, uint8_t* outFlags); - - int32_t getMetaState(); - - inline const InputDeviceCalibration& getCalibration() { - return mCalibration; - } - -private: - InputReaderContext* mContext; - int32_t mId; - - Vector<InputMapper*> mMappers; - - String8 mName; - uint32_t mSources; - - typedef int32_t (InputMapper::*GetStateFunc)(uint32_t sourceMask, int32_t code); - int32_t getState(uint32_t sourceMask, int32_t code, GetStateFunc getStateFunc); - - InputDeviceCalibration mCalibration; -}; - - -/* An input mapper transforms raw input events into cooked event data. - * A single input device can have multiple associated input mappers in order to interpret - * different classes of events. - */ -class InputMapper { -public: - InputMapper(InputDevice* device); - virtual ~InputMapper(); - - inline InputDevice* getDevice() { return mDevice; } - inline int32_t getDeviceId() { return mDevice->getId(); } - inline const String8 getDeviceName() { return mDevice->getName(); } - inline InputReaderContext* getContext() { return mContext; } - inline InputReaderPolicyInterface* getPolicy() { return mContext->getPolicy(); } - inline InputDispatcherInterface* getDispatcher() { return mContext->getDispatcher(); } - inline EventHubInterface* getEventHub() { return mContext->getEventHub(); } - - virtual uint32_t getSources() = 0; - virtual void populateDeviceInfo(InputDeviceInfo* deviceInfo); - virtual void dump(String8& dump); - virtual void configure(); - virtual void reset(); - virtual void process(const RawEvent* rawEvent) = 0; - - virtual int32_t getKeyCodeState(uint32_t sourceMask, int32_t keyCode); - virtual int32_t getScanCodeState(uint32_t sourceMask, int32_t scanCode); - virtual int32_t getSwitchState(uint32_t sourceMask, int32_t switchCode); - virtual bool markSupportedKeyCodes(uint32_t sourceMask, size_t numCodes, - const int32_t* keyCodes, uint8_t* outFlags); - - virtual int32_t getMetaState(); - -protected: - InputDevice* mDevice; - InputReaderContext* mContext; -}; - - -class SwitchInputMapper : public InputMapper { -public: - SwitchInputMapper(InputDevice* device); - virtual ~SwitchInputMapper(); - - virtual uint32_t getSources(); - virtual void process(const RawEvent* rawEvent); - - virtual int32_t getSwitchState(uint32_t sourceMask, int32_t switchCode); - -private: - void processSwitch(nsecs_t when, int32_t switchCode, int32_t switchValue); -}; - - -class KeyboardInputMapper : public InputMapper { -public: - KeyboardInputMapper(InputDevice* device, int32_t associatedDisplayId, uint32_t sources, - int32_t keyboardType); - virtual ~KeyboardInputMapper(); - - virtual uint32_t getSources(); - virtual void populateDeviceInfo(InputDeviceInfo* deviceInfo); - virtual void dump(String8& dump); - virtual void reset(); - virtual void process(const RawEvent* rawEvent); - - virtual int32_t getKeyCodeState(uint32_t sourceMask, int32_t keyCode); - virtual int32_t getScanCodeState(uint32_t sourceMask, int32_t scanCode); - virtual bool markSupportedKeyCodes(uint32_t sourceMask, size_t numCodes, - const int32_t* keyCodes, uint8_t* outFlags); - - virtual int32_t getMetaState(); - -private: - Mutex mLock; - - struct KeyDown { - int32_t keyCode; - int32_t scanCode; - }; - - int32_t mAssociatedDisplayId; - uint32_t mSources; - int32_t mKeyboardType; - - struct LockedState { - Vector<KeyDown> keyDowns; // keys that are down - int32_t metaState; - nsecs_t downTime; // time of most recent key down - } mLocked; - - void initializeLocked(); - - bool isKeyboardOrGamepadKey(int32_t scanCode); - - void processKey(nsecs_t when, bool down, int32_t keyCode, int32_t scanCode, - uint32_t policyFlags); - - ssize_t findKeyDownLocked(int32_t scanCode); -}; - - -class TrackballInputMapper : public InputMapper { -public: - TrackballInputMapper(InputDevice* device, int32_t associatedDisplayId); - virtual ~TrackballInputMapper(); - - virtual uint32_t getSources(); - virtual void populateDeviceInfo(InputDeviceInfo* deviceInfo); - virtual void dump(String8& dump); - virtual void reset(); - virtual void process(const RawEvent* rawEvent); - - virtual int32_t getScanCodeState(uint32_t sourceMask, int32_t scanCode); - -private: - // Amount that trackball needs to move in order to generate a key event. - static const int32_t TRACKBALL_MOVEMENT_THRESHOLD = 6; - - Mutex mLock; - - int32_t mAssociatedDisplayId; - - struct Accumulator { - enum { - FIELD_BTN_MOUSE = 1, - FIELD_REL_X = 2, - FIELD_REL_Y = 4 - }; - - uint32_t fields; - - bool btnMouse; - int32_t relX; - int32_t relY; - - inline void clear() { - fields = 0; - } - } mAccumulator; - - float mXScale; - float mYScale; - float mXPrecision; - float mYPrecision; - - struct LockedState { - bool down; - nsecs_t downTime; - } mLocked; - - void initializeLocked(); - - void sync(nsecs_t when); -}; - - -class TouchInputMapper : public InputMapper { -public: - TouchInputMapper(InputDevice* device, int32_t associatedDisplayId); - virtual ~TouchInputMapper(); - - virtual uint32_t getSources(); - virtual void populateDeviceInfo(InputDeviceInfo* deviceInfo); - virtual void dump(String8& dump); - virtual void configure(); - virtual void reset(); - - virtual int32_t getKeyCodeState(uint32_t sourceMask, int32_t keyCode); - virtual int32_t getScanCodeState(uint32_t sourceMask, int32_t scanCode); - virtual bool markSupportedKeyCodes(uint32_t sourceMask, size_t numCodes, - const int32_t* keyCodes, uint8_t* outFlags); - -protected: - Mutex mLock; - - struct VirtualKey { - int32_t keyCode; - int32_t scanCode; - uint32_t flags; - - // computed hit box, specified in touch screen coords based on known display size - int32_t hitLeft; - int32_t hitTop; - int32_t hitRight; - int32_t hitBottom; - - inline bool isHit(int32_t x, int32_t y) const { - return x >= hitLeft && x <= hitRight && y >= hitTop && y <= hitBottom; - } - }; - - // Raw data for a single pointer. - struct PointerData { - uint32_t id; - int32_t x; - int32_t y; - int32_t pressure; - int32_t touchMajor; - int32_t touchMinor; - int32_t toolMajor; - int32_t toolMinor; - int32_t orientation; - - inline bool operator== (const PointerData& other) const { - return id == other.id - && x == other.x - && y == other.y - && pressure == other.pressure - && touchMajor == other.touchMajor - && touchMinor == other.touchMinor - && toolMajor == other.toolMajor - && toolMinor == other.toolMinor - && orientation == other.orientation; - } - inline bool operator!= (const PointerData& other) const { - return !(*this == other); - } - }; - - // Raw data for a collection of pointers including a pointer id mapping table. - struct TouchData { - uint32_t pointerCount; - PointerData pointers[MAX_POINTERS]; - BitSet32 idBits; - uint32_t idToIndex[MAX_POINTER_ID + 1]; - - void copyFrom(const TouchData& other) { - pointerCount = other.pointerCount; - idBits = other.idBits; - - for (uint32_t i = 0; i < pointerCount; i++) { - pointers[i] = other.pointers[i]; - - int id = pointers[i].id; - idToIndex[id] = other.idToIndex[id]; - } - } - - inline void clear() { - pointerCount = 0; - idBits.clear(); - } - }; - - int32_t mAssociatedDisplayId; - - // Immutable configuration parameters. - struct Parameters { - bool useBadTouchFilter; - bool useJumpyTouchFilter; - bool useAveragingTouchFilter; - } mParameters; - - // Immutable calibration parameters in parsed form. - struct Calibration { - // Touch Size - enum TouchSizeCalibration { - TOUCH_SIZE_CALIBRATION_DEFAULT, - TOUCH_SIZE_CALIBRATION_NONE, - TOUCH_SIZE_CALIBRATION_GEOMETRIC, - TOUCH_SIZE_CALIBRATION_PRESSURE, - }; - - TouchSizeCalibration touchSizeCalibration; - - // Tool Size - enum ToolSizeCalibration { - TOOL_SIZE_CALIBRATION_DEFAULT, - TOOL_SIZE_CALIBRATION_NONE, - TOOL_SIZE_CALIBRATION_GEOMETRIC, - TOOL_SIZE_CALIBRATION_LINEAR, - TOOL_SIZE_CALIBRATION_AREA, - }; - - ToolSizeCalibration toolSizeCalibration; - bool haveToolSizeLinearScale; - float toolSizeLinearScale; - bool haveToolSizeLinearBias; - float toolSizeLinearBias; - bool haveToolSizeAreaScale; - float toolSizeAreaScale; - bool haveToolSizeAreaBias; - float toolSizeAreaBias; - bool haveToolSizeIsSummed; - int32_t toolSizeIsSummed; - - // Pressure - enum PressureCalibration { - PRESSURE_CALIBRATION_DEFAULT, - PRESSURE_CALIBRATION_NONE, - PRESSURE_CALIBRATION_PHYSICAL, - PRESSURE_CALIBRATION_AMPLITUDE, - }; - enum PressureSource { - PRESSURE_SOURCE_DEFAULT, - PRESSURE_SOURCE_PRESSURE, - PRESSURE_SOURCE_TOUCH, - }; - - PressureCalibration pressureCalibration; - PressureSource pressureSource; - bool havePressureScale; - float pressureScale; - - // Size - enum SizeCalibration { - SIZE_CALIBRATION_DEFAULT, - SIZE_CALIBRATION_NONE, - SIZE_CALIBRATION_NORMALIZED, - }; - - SizeCalibration sizeCalibration; - - // Orientation - enum OrientationCalibration { - ORIENTATION_CALIBRATION_DEFAULT, - ORIENTATION_CALIBRATION_NONE, - ORIENTATION_CALIBRATION_INTERPOLATED, - }; - - OrientationCalibration orientationCalibration; - } mCalibration; - - // Raw axis information from the driver. - struct RawAxes { - RawAbsoluteAxisInfo x; - RawAbsoluteAxisInfo y; - RawAbsoluteAxisInfo pressure; - RawAbsoluteAxisInfo touchMajor; - RawAbsoluteAxisInfo touchMinor; - RawAbsoluteAxisInfo toolMajor; - RawAbsoluteAxisInfo toolMinor; - RawAbsoluteAxisInfo orientation; - } mRawAxes; - - // Current and previous touch sample data. - TouchData mCurrentTouch; - TouchData mLastTouch; - - // The time the primary pointer last went down. - nsecs_t mDownTime; - - struct LockedState { - Vector<VirtualKey> virtualKeys; - - // The surface orientation and width and height set by configureSurfaceLocked(). - int32_t surfaceOrientation; - int32_t surfaceWidth, surfaceHeight; - - // Translation and scaling factors, orientation-independent. - int32_t xOrigin; - float xScale; - float xPrecision; - - int32_t yOrigin; - float yScale; - float yPrecision; - - float geometricScale; - - float toolSizeLinearScale; - float toolSizeLinearBias; - float toolSizeAreaScale; - float toolSizeAreaBias; - - float pressureScale; - - float sizeScale; - - float orientationScale; - - // Oriented motion ranges for input device info. - struct OrientedRanges { - InputDeviceInfo::MotionRange x; - InputDeviceInfo::MotionRange y; - - bool havePressure; - InputDeviceInfo::MotionRange pressure; - - bool haveSize; - InputDeviceInfo::MotionRange size; - - bool haveTouchSize; - InputDeviceInfo::MotionRange touchMajor; - InputDeviceInfo::MotionRange touchMinor; - - bool haveToolSize; - InputDeviceInfo::MotionRange toolMajor; - InputDeviceInfo::MotionRange toolMinor; - - bool haveOrientation; - InputDeviceInfo::MotionRange orientation; - } orientedRanges; - - // Oriented dimensions and precision. - float orientedSurfaceWidth, orientedSurfaceHeight; - float orientedXPrecision, orientedYPrecision; - - struct CurrentVirtualKeyState { - bool down; - nsecs_t downTime; - int32_t keyCode; - int32_t scanCode; - } currentVirtualKey; - } mLocked; - - virtual void configureParameters(); - virtual void dumpParameters(String8& dump); - virtual void configureRawAxes(); - virtual void dumpRawAxes(String8& dump); - virtual bool configureSurfaceLocked(); - virtual void dumpSurfaceLocked(String8& dump); - virtual void configureVirtualKeysLocked(); - virtual void dumpVirtualKeysLocked(String8& dump); - virtual void parseCalibration(); - virtual void resolveCalibration(); - virtual void dumpCalibration(String8& dump); - - enum TouchResult { - // Dispatch the touch normally. - DISPATCH_TOUCH, - // Do not dispatch the touch, but keep tracking the current stroke. - SKIP_TOUCH, - // Do not dispatch the touch, and drop all information associated with the current stoke - // so the next movement will appear as a new down. - DROP_STROKE - }; - - void syncTouch(nsecs_t when, bool havePointerIds); - -private: - /* Maximum number of historical samples to average. */ - static const uint32_t AVERAGING_HISTORY_SIZE = 5; - - /* Slop distance for jumpy pointer detection. - * The vertical range of the screen divided by this is our epsilon value. */ - static const uint32_t JUMPY_EPSILON_DIVISOR = 212; - - /* Number of jumpy points to drop for touchscreens that need it. */ - static const uint32_t JUMPY_TRANSITION_DROPS = 3; - static const uint32_t JUMPY_DROP_LIMIT = 3; - - /* Maximum squared distance for averaging. - * If moving farther than this, turn of averaging to avoid lag in response. */ - static const uint64_t AVERAGING_DISTANCE_LIMIT = 75 * 75; - - struct AveragingTouchFilterState { - // Individual history tracks are stored by pointer id - uint32_t historyStart[MAX_POINTERS]; - uint32_t historyEnd[MAX_POINTERS]; - struct { - struct { - int32_t x; - int32_t y; - int32_t pressure; - } pointers[MAX_POINTERS]; - } historyData[AVERAGING_HISTORY_SIZE]; - } mAveragingTouchFilter; - - struct JumpyTouchFilterState { - uint32_t jumpyPointsDropped; - } mJumpyTouchFilter; - - struct PointerDistanceHeapElement { - uint32_t currentPointerIndex : 8; - uint32_t lastPointerIndex : 8; - uint64_t distance : 48; // squared distance - }; - - void initializeLocked(); - - TouchResult consumeOffScreenTouches(nsecs_t when, uint32_t policyFlags); - void dispatchTouches(nsecs_t when, uint32_t policyFlags); - void dispatchTouch(nsecs_t when, uint32_t policyFlags, TouchData* touch, - BitSet32 idBits, uint32_t changedId, uint32_t pointerCount, - int32_t motionEventAction); - - bool isPointInsideSurfaceLocked(int32_t x, int32_t y); - const VirtualKey* findVirtualKeyHitLocked(int32_t x, int32_t y); - - bool applyBadTouchFilter(); - bool applyJumpyTouchFilter(); - void applyAveragingTouchFilter(); - void calculatePointerIds(); -}; - - -class SingleTouchInputMapper : public TouchInputMapper { -public: - SingleTouchInputMapper(InputDevice* device, int32_t associatedDisplayId); - virtual ~SingleTouchInputMapper(); - - virtual void reset(); - virtual void process(const RawEvent* rawEvent); - -protected: - virtual void configureRawAxes(); - -private: - struct Accumulator { - enum { - FIELD_BTN_TOUCH = 1, - FIELD_ABS_X = 2, - FIELD_ABS_Y = 4, - FIELD_ABS_PRESSURE = 8, - FIELD_ABS_TOOL_WIDTH = 16 - }; - - uint32_t fields; - - bool btnTouch; - int32_t absX; - int32_t absY; - int32_t absPressure; - int32_t absToolWidth; - - inline void clear() { - fields = 0; - } - } mAccumulator; - - bool mDown; - int32_t mX; - int32_t mY; - int32_t mPressure; - int32_t mToolWidth; - - void initialize(); - - void sync(nsecs_t when); -}; - - -class MultiTouchInputMapper : public TouchInputMapper { -public: - MultiTouchInputMapper(InputDevice* device, int32_t associatedDisplayId); - virtual ~MultiTouchInputMapper(); - - virtual void reset(); - virtual void process(const RawEvent* rawEvent); - -protected: - virtual void configureRawAxes(); - -private: - struct Accumulator { - enum { - FIELD_ABS_MT_POSITION_X = 1, - FIELD_ABS_MT_POSITION_Y = 2, - FIELD_ABS_MT_TOUCH_MAJOR = 4, - FIELD_ABS_MT_TOUCH_MINOR = 8, - FIELD_ABS_MT_WIDTH_MAJOR = 16, - FIELD_ABS_MT_WIDTH_MINOR = 32, - FIELD_ABS_MT_ORIENTATION = 64, - FIELD_ABS_MT_TRACKING_ID = 128, - FIELD_ABS_MT_PRESSURE = 256, - }; - - uint32_t pointerCount; - struct Pointer { - uint32_t fields; - - int32_t absMTPositionX; - int32_t absMTPositionY; - int32_t absMTTouchMajor; - int32_t absMTTouchMinor; - int32_t absMTWidthMajor; - int32_t absMTWidthMinor; - int32_t absMTOrientation; - int32_t absMTTrackingId; - int32_t absMTPressure; - - inline void clear() { - fields = 0; - } - } pointers[MAX_POINTERS + 1]; // + 1 to remove the need for extra range checks - - inline void clear() { - pointerCount = 0; - pointers[0].clear(); - } - } mAccumulator; - - void initialize(); - - void sync(nsecs_t when); -}; - -} // namespace android - -#endif // _UI_INPUT_READER_H |