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diff --git a/include/ui/Input.h b/include/ui/Input.h
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--- /dev/null
+++ b/include/ui/Input.h
@@ -0,0 +1,310 @@
+/*
+ * 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_H
+#define _UI_INPUT_H
+
+/**
+ * Native input event structures.
+ */
+
+#include <android/input.h>
+#include <utils/Vector.h>
+#include <utils/Timers.h>
+
+/*
+ * Additional private constants not defined in ndk/ui/input.h.
+ */
+enum {
+    /*
+     * Private control to determine when an app is tracking a key sequence.
+     */
+    KEY_EVENT_FLAG_START_TRACKING = 0x40000000
+};
+
+/*
+ * Maximum number of pointers supported per motion event.
+ */
+#define MAX_POINTERS 10
+
+namespace android {
+
+/*
+ * 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;
+};
+
+/*
+ * Flags that flow alongside events in the input dispatch system to help with certain
+ * policy decisions such as waking from device sleep.
+ *
+ * TODO This enumeration should probably be split up or relabeled for clarity.
+ */
+enum {
+    /* These flags originate in RawEvents and are generally set in the key map. */
+
+    POLICY_FLAG_WAKE = 0x00000001,
+    POLICY_FLAG_WAKE_DROPPED = 0x00000002,
+    POLICY_FLAG_SHIFT = 0x00000004,
+    POLICY_FLAG_CAPS_LOCK = 0x00000008,
+    POLICY_FLAG_ALT = 0x00000010,
+    POLICY_FLAG_ALT_GR = 0x00000020,
+    POLICY_FLAG_MENU = 0x00000040,
+    POLICY_FLAG_LAUNCHER = 0x00000080,
+
+    /* These flags are set by the input dispatch policy as it intercepts each event. */
+
+    // Indicates that the screen was off when the event was received and the event
+    // should wake the device.
+    POLICY_FLAG_WOKE_HERE = 0x10000000,
+
+    // Indicates that the screen was dim when the event was received and the event
+    // should brighten the device.
+    POLICY_FLAG_BRIGHT_HERE = 0x20000000,
+};
+
+/*
+ * Pointer coordinate data.
+ */
+struct PointerCoords {
+    float x;
+    float y;
+    float pressure;
+    float size;
+};
+
+/*
+ * Input events.
+ */
+struct input_event_t { };
+
+class InputEvent : public input_event_t {
+public:
+    virtual ~InputEvent() { }
+
+    virtual int32_t getType() const = 0;
+
+    inline int32_t getDeviceId() const { return mDeviceId; }
+
+    inline int32_t getNature() const { return mNature; }
+
+protected:
+    void initialize(int32_t deviceId, int32_t nature);
+
+private:
+    int32_t mDeviceId;
+    int32_t mNature;
+};
+
+class KeyEvent : public InputEvent {
+public:
+    virtual ~KeyEvent() { }
+
+    virtual int32_t getType() const { return INPUT_EVENT_TYPE_KEY; }
+
+    inline int32_t getAction() const { return mAction; }
+
+    inline int32_t getFlags() const { return mFlags; }
+
+    inline int32_t getKeyCode() const { return mKeyCode; }
+
+    inline int32_t getScanCode() const { return mScanCode; }
+
+    inline int32_t getMetaState() const { return mMetaState; }
+
+    inline int32_t getRepeatCount() const { return mRepeatCount; }
+
+    inline nsecs_t getDownTime() const { return mDownTime; }
+
+    inline nsecs_t getEventTime() const { return mEventTime; }
+
+    void initialize(
+            int32_t deviceId,
+            int32_t nature,
+            int32_t action,
+            int32_t flags,
+            int32_t keyCode,
+            int32_t scanCode,
+            int32_t metaState,
+            int32_t repeatCount,
+            nsecs_t downTime,
+            nsecs_t eventTime);
+
+private:
+    int32_t mAction;
+    int32_t mFlags;
+    int32_t mKeyCode;
+    int32_t mScanCode;
+    int32_t mMetaState;
+    int32_t mRepeatCount;
+    nsecs_t mDownTime;
+    nsecs_t mEventTime;
+};
+
+class MotionEvent : public InputEvent {
+public:
+    virtual ~MotionEvent() { }
+
+    virtual int32_t getType() const { return INPUT_EVENT_TYPE_MOTION; }
+
+    inline int32_t getAction() const { return mAction; }
+
+    inline int32_t getEdgeFlags() const { return mEdgeFlags; }
+
+    inline int32_t getMetaState() const { return mMetaState; }
+
+    inline float getXPrecision() const { return mXPrecision; }
+
+    inline float getYPrecision() const { return mYPrecision; }
+
+    inline nsecs_t getDownTime() const { return mDownTime; }
+
+    inline size_t getPointerCount() const { return mPointerIds.size(); }
+
+    inline int32_t getPointerId(size_t pointerIndex) const { return mPointerIds[pointerIndex]; }
+
+    inline nsecs_t getEventTime() const { return mSampleEventTimes[getHistorySize()]; }
+
+    inline float getRawX() const { return mRawX; }
+
+    inline float getRawY() const { return mRawY; }
+
+    inline float getX(size_t pointerIndex) const {
+        return getCurrentPointerCoords(pointerIndex).x;
+    }
+
+    inline float getY(size_t pointerIndex) const {
+        return getCurrentPointerCoords(pointerIndex).y;
+    }
+
+    inline float getPressure(size_t pointerIndex) const {
+        return getCurrentPointerCoords(pointerIndex).pressure;
+    }
+
+    inline float getSize(size_t pointerIndex) const {
+        return getCurrentPointerCoords(pointerIndex).size;
+    }
+
+    inline size_t getHistorySize() const { return mSampleEventTimes.size() - 1; }
+
+    inline nsecs_t getHistoricalEventTime(size_t historicalIndex) const {
+        return mSampleEventTimes[historicalIndex];
+    }
+
+    inline float getHistoricalX(size_t pointerIndex, size_t historicalIndex) const {
+        return getHistoricalPointerCoords(pointerIndex, historicalIndex).x;
+    }
+
+    inline float getHistoricalY(size_t pointerIndex, size_t historicalIndex) const {
+        return getHistoricalPointerCoords(pointerIndex, historicalIndex).y;
+    }
+
+    inline float getHistoricalPressure(size_t pointerIndex, size_t historicalIndex) const {
+        return getHistoricalPointerCoords(pointerIndex, historicalIndex).pressure;
+    }
+
+    inline float getHistoricalSize(size_t pointerIndex, size_t historicalIndex) const {
+        return getHistoricalPointerCoords(pointerIndex, historicalIndex).size;
+    }
+
+    void initialize(
+            int32_t deviceId,
+            int32_t nature,
+            int32_t action,
+            int32_t edgeFlags,
+            int32_t metaState,
+            float rawX,
+            float rawY,
+            float xPrecision,
+            float yPrecision,
+            nsecs_t downTime,
+            nsecs_t eventTime,
+            size_t pointerCount,
+            const int32_t* pointerIds,
+            const PointerCoords* pointerCoords);
+
+    void addSample(
+            nsecs_t eventTime,
+            const PointerCoords* pointerCoords);
+
+    void offsetLocation(float xOffset, float yOffset);
+
+private:
+    int32_t mAction;
+    int32_t mEdgeFlags;
+    int32_t mMetaState;
+    float mRawX;
+    float mRawY;
+    float mXPrecision;
+    float mYPrecision;
+    nsecs_t mDownTime;
+    Vector<int32_t> mPointerIds;
+    Vector<nsecs_t> mSampleEventTimes;
+    Vector<PointerCoords> mSamplePointerCoords;
+
+    inline const PointerCoords& getCurrentPointerCoords(size_t pointerIndex) const {
+        return mSamplePointerCoords[getHistorySize() * getPointerCount() + pointerIndex];
+    }
+
+    inline const PointerCoords& getHistoricalPointerCoords(
+            size_t pointerIndex, size_t historicalIndex) const {
+        return mSamplePointerCoords[historicalIndex * getPointerCount() + pointerIndex];
+    }
+};
+
+/*
+ * Input event factory.
+ */
+class InputEventFactoryInterface {
+protected:
+    virtual ~InputEventFactoryInterface() { }
+
+public:
+    InputEventFactoryInterface() { }
+
+    virtual KeyEvent* createKeyEvent() = 0;
+    virtual MotionEvent* createMotionEvent() = 0;
+};
+
+/*
+ * A simple input event factory implementation that uses a single preallocated instance
+ * of each type of input event that are reused for each request.
+ */
+class PreallocatedInputEventFactory : public InputEventFactoryInterface {
+public:
+    PreallocatedInputEventFactory() { }
+    virtual ~PreallocatedInputEventFactory() { }
+
+    virtual KeyEvent* createKeyEvent() { return & mKeyEvent; }
+    virtual MotionEvent* createMotionEvent() { return & mMotionEvent; }
+
+private:
+    KeyEvent mKeyEvent;
+    MotionEvent mMotionEvent;
+};
+
+
+} // namespace android
+
+#endif // _UI_INPUT_H