| /* |
| * 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 |
| }; |
| |
| /* Actions returned by interceptXXX methods. */ |
| enum { |
| // The input dispatcher should do nothing and discard the input unless other |
| // flags are set. |
| ACTION_NONE = 0, |
| |
| // The input dispatcher should dispatch the input to the application. |
| ACTION_DISPATCH = 0x00000001, |
| }; |
| |
| /* 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; |
| |
| /* Provides feedback for a virtual key down. |
| */ |
| virtual void virtualKeyDownFeedback() = 0; |
| |
| /* Intercepts a key event. |
| * The policy can use this method as an opportunity to perform power management functions |
| * and early event preprocessing such as updating policy flags. |
| * |
| * Returns a policy action constant such as ACTION_DISPATCH. |
| */ |
| virtual int32_t interceptKey(nsecs_t when, int32_t deviceId, |
| bool down, int32_t keyCode, int32_t scanCode, uint32_t& policyFlags) = 0; |
| |
| /* Intercepts a switch event. |
| * The policy can use this method as an opportunity to perform power management functions |
| * and early event preprocessing such as updating policy flags. |
| * |
| * Switches are not dispatched to applications so this method should |
| * usually return ACTION_NONE. |
| */ |
| virtual int32_t interceptSwitch(nsecs_t when, int32_t switchCode, int32_t switchValue, |
| uint32_t& policyFlags) = 0; |
| |
| /* Intercepts a generic touch, trackball or other event. |
| * The policy can use this method as an opportunity to perform power management functions |
| * and early event preprocessing such as updating policy flags. |
| * |
| * Returns a policy action constant such as ACTION_DISPATCH. |
| */ |
| virtual int32_t interceptGeneric(nsecs_t when, uint32_t& policyFlags) = 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 { |
| protected: |
| InputReaderContext() { } |
| virtual ~InputReaderContext() { } |
| |
| public: |
| 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, private 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); |
| |
| 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(nsecs_t when, int32_t deviceId); |
| void removeDevice(nsecs_t when, int32_t deviceId); |
| InputDevice* createDevice(int32_t deviceId, const String8& name, uint32_t classes); |
| 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); |
| |
| // dump state |
| void dumpDeviceInfo(String8& dump); |
| }; |
| |
| |
| /* 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 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 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; |
| |
| bool applyStandardPolicyActions(nsecs_t when, int32_t policyActions); |
| }; |
| |
| |
| 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 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); |
| void applyPolicyAndDispatch(nsecs_t when, uint32_t policyFlags, |
| bool down, int32_t keyCode, int32_t scanCode, int32_t metaState, nsecs_t downTime); |
| |
| 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 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); |
| void applyPolicyAndDispatch(nsecs_t when, int32_t motionEventAction, |
| PointerCoords* pointerCoords, nsecs_t downTime); |
| }; |
| |
| |
| class TouchInputMapper : public InputMapper { |
| public: |
| TouchInputMapper(InputDevice* device, int32_t associatedDisplayId); |
| virtual ~TouchInputMapper(); |
| |
| virtual uint32_t getSources(); |
| virtual void populateDeviceInfo(InputDeviceInfo* deviceInfo); |
| 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: |
| /* Maximum pointer id value supported. |
| * (This is limited by our use of BitSet32 to track pointer assignments.) */ |
| static const uint32_t MAX_POINTER_ID = 31; |
| |
| 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; |
| }; |
| |
| // 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 Area |
| enum TouchAreaCalibration { |
| TOUCH_AREA_CALIBRATION_DEFAULT, |
| TOUCH_AREA_CALIBRATION_NONE, |
| TOUCH_AREA_CALIBRATION_GEOMETRIC, |
| TOUCH_AREA_CALIBRATION_PRESSURE, |
| }; |
| |
| TouchAreaCalibration touchAreaCalibration; |
| |
| // Tool Area |
| enum ToolAreaCalibration { |
| TOOL_AREA_CALIBRATION_DEFAULT, |
| TOOL_AREA_CALIBRATION_NONE, |
| TOOL_AREA_CALIBRATION_GEOMETRIC, |
| TOOL_AREA_CALIBRATION_LINEAR, |
| }; |
| |
| ToolAreaCalibration toolAreaCalibration; |
| bool haveToolAreaLinearScale; |
| float toolAreaLinearScale; |
| bool haveToolAreaLinearBias; |
| float toolAreaLinearBias; |
| bool haveToolAreaIsSummed; |
| int32_t toolAreaIsSummed; |
| |
| // 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 toolAreaLinearScale; |
| float toolAreaLinearBias; |
| |
| 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 haveTouchArea; |
| InputDeviceInfo::MotionRange touchMajor; |
| InputDeviceInfo::MotionRange touchMinor; |
| |
| bool haveToolArea; |
| 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 logParameters(); |
| virtual void configureRawAxes(); |
| virtual void logRawAxes(); |
| virtual bool configureSurfaceLocked(); |
| virtual void logMotionRangesLocked(); |
| virtual void configureVirtualKeysLocked(); |
| virtual void parseCalibration(); |
| virtual void resolveCalibration(); |
| virtual void logCalibration(); |
| |
| 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); |
| |
| void applyPolicyAndDispatchVirtualKey(nsecs_t when, uint32_t policyFlags, |
| int32_t keyEventAction, int32_t keyEventFlags, |
| int32_t keyCode, int32_t scanCode, nsecs_t downTime); |
| |
| 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 |