Mouse pointer integration.
Added support for loading the pointer icon from a resource.
Moved the system server related bits of the input manager out
of libui and into libinput since they do not need to be linked into
applications.
Change-Id: Iec11e0725b3add2b905c51f8ea2c3b4b0d1a2d67
diff --git a/services/input/InputReader.h b/services/input/InputReader.h
new file mode 100644
index 0000000..8c849c4
--- /dev/null
+++ b/services/input/InputReader.h
@@ -0,0 +1,955 @@
+/*
+ * 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 "EventHub.h"
+#include "InputDispatcher.h"
+#include "PointerController.h"
+
+#include <ui/Input.h>
+#include <ui/DisplayInfo.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;
+
+
+/*
+ * 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 excluded device names for the platform. */
+ virtual void getExcludedDeviceNames(Vector<String8>& outExcludedDeviceNames) = 0;
+
+ /* Gets a pointer controller associated with the specified cursor device (ie. a mouse). */
+ virtual sp<PointerControllerInterface> obtainPointerController(int32_t deviceId) = 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 PropertyMap& getConfiguration() {
+ return mConfiguration;
+ }
+
+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);
+
+ PropertyMap mConfiguration;
+};
+
+
+/* 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, uint32_t sources, int32_t keyboardType);
+ virtual ~KeyboardInputMapper();
+
+ virtual uint32_t getSources();
+ virtual void populateDeviceInfo(InputDeviceInfo* deviceInfo);
+ virtual void dump(String8& dump);
+ virtual void configure();
+ 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;
+ };
+
+ uint32_t mSources;
+ int32_t mKeyboardType;
+
+ // Immutable configuration parameters.
+ struct Parameters {
+ int32_t associatedDisplayId;
+ bool orientationAware;
+ } mParameters;
+
+ struct LockedState {
+ Vector<KeyDown> keyDowns; // keys that are down
+ int32_t metaState;
+ nsecs_t downTime; // time of most recent key down
+
+ struct LedState {
+ bool avail; // led is available
+ bool on; // we think the led is currently on
+ };
+ LedState capsLockLedState;
+ LedState numLockLedState;
+ LedState scrollLockLedState;
+ } mLocked;
+
+ void initializeLocked();
+
+ void configureParameters();
+ void dumpParameters(String8& dump);
+
+ 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);
+
+ void resetLedStateLocked();
+ void initializeLedStateLocked(LockedState::LedState& ledState, int32_t led);
+ void updateLedStateLocked(bool reset);
+ void updateLedStateForModifierLocked(LockedState::LedState& ledState, int32_t led,
+ int32_t modifier, bool reset);
+};
+
+
+class CursorInputMapper : public InputMapper {
+public:
+ CursorInputMapper(InputDevice* device);
+ virtual ~CursorInputMapper();
+
+ virtual uint32_t getSources();
+ virtual void populateDeviceInfo(InputDeviceInfo* deviceInfo);
+ virtual void dump(String8& dump);
+ virtual void configure();
+ 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;
+
+ // Immutable configuration parameters.
+ struct Parameters {
+ enum Mode {
+ MODE_POINTER,
+ MODE_NAVIGATION,
+ };
+
+ Mode mode;
+ int32_t associatedDisplayId;
+ bool orientationAware;
+ } mParameters;
+
+ 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;
+
+ int32_t mSources;
+ float mXScale;
+ float mYScale;
+ float mXPrecision;
+ float mYPrecision;
+ sp<PointerControllerInterface> mPointerController;
+
+ struct LockedState {
+ bool down;
+ nsecs_t downTime;
+ } mLocked;
+
+ void initializeLocked();
+
+ void configureParameters();
+ void dumpParameters(String8& dump);
+
+ void sync(nsecs_t when);
+};
+
+
+class TouchInputMapper : public InputMapper {
+public:
+ TouchInputMapper(InputDevice* device);
+ 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();
+ }
+ };
+
+ // Input sources supported by the device.
+ int32_t mSources;
+
+ // Immutable configuration parameters.
+ struct Parameters {
+ enum DeviceType {
+ DEVICE_TYPE_TOUCH_SCREEN,
+ DEVICE_TYPE_TOUCH_PAD,
+ };
+
+ DeviceType deviceType;
+ int32_t associatedDisplayId;
+ bool orientationAware;
+
+ bool useBadTouchFilter;
+ bool useJumpyTouchFilter;
+ bool useAveragingTouchFilter;
+ } mParameters;
+
+ // Immutable calibration parameters in parsed form.
+ struct Calibration {
+ // Position
+ bool haveXOrigin;
+ int32_t xOrigin;
+ bool haveYOrigin;
+ int32_t yOrigin;
+ bool haveXScale;
+ float xScale;
+ bool haveYScale;
+ float yScale;
+
+ // 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;
+ bool 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);
+ 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);
+ 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