diff --git a/services/inputflinger/InputManager.h b/services/inputflinger/InputManager.h
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+++ b/services/inputflinger/InputManager.h
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+/*
+ * 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_MANAGER_H
+#define _UI_INPUT_MANAGER_H
+
+/**
+ * Native input manager.
+ */
+
+#include "EventHub.h"
+#include "InputReader.h"
+#include "InputDispatcher.h"
+
+#include <input/Input.h>
+#include <input/InputTransport.h>
+#include <utils/Errors.h>
+#include <utils/Vector.h>
+#include <utils/Timers.h>
+#include <utils/RefBase.h>
+#include <utils/String8.h>
+
+namespace android {
+
+/*
+ * The input manager is the core of the system event processing.
+ *
+ * The input manager uses two threads.
+ *
+ * 1. The InputReaderThread (called "InputReader") reads and preprocesses raw input events,
+ *    applies policy, and posts messages to a queue managed by the DispatcherThread.
+ * 2. The InputDispatcherThread (called "InputDispatcher") thread waits for new events on the
+ *    queue and asynchronously dispatches them to applications.
+ *
+ * By design, the InputReaderThread class and InputDispatcherThread class do not share any
+ * internal state.  Moreover, all communication is done one way from the InputReaderThread
+ * into the InputDispatcherThread and never the reverse.  Both classes may interact with the
+ * InputDispatchPolicy, however.
+ *
+ * The InputManager class never makes any calls into Java itself.  Instead, the
+ * InputDispatchPolicy is responsible for performing all external interactions with the
+ * system, including calling DVM services.
+ */
+class InputManagerInterface : public virtual RefBase {
+protected:
+    InputManagerInterface() { }
+    virtual ~InputManagerInterface() { }
+
+public:
+    /* Starts the input manager threads. */
+    virtual status_t start() = 0;
+
+    /* Stops the input manager threads and waits for them to exit. */
+    virtual status_t stop() = 0;
+
+    /* Gets the input reader. */
+    virtual sp<InputReaderInterface> getReader() = 0;
+
+    /* Gets the input dispatcher. */
+    virtual sp<InputDispatcherInterface> getDispatcher() = 0;
+};
+
+class InputManager : public InputManagerInterface {
+protected:
+    virtual ~InputManager();
+
+public:
+    InputManager(
+            const sp<EventHubInterface>& eventHub,
+            const sp<InputReaderPolicyInterface>& readerPolicy,
+            const sp<InputDispatcherPolicyInterface>& dispatcherPolicy);
+
+    // (used for testing purposes)
+    InputManager(
+            const sp<InputReaderInterface>& reader,
+            const sp<InputDispatcherInterface>& dispatcher);
+
+    virtual status_t start();
+    virtual status_t stop();
+
+    virtual sp<InputReaderInterface> getReader();
+    virtual sp<InputDispatcherInterface> getDispatcher();
+
+private:
+    sp<InputReaderInterface> mReader;
+    sp<InputReaderThread> mReaderThread;
+
+    sp<InputDispatcherInterface> mDispatcher;
+    sp<InputDispatcherThread> mDispatcherThread;
+
+    void initialize();
+};
+
+} // namespace android
+
+#endif // _UI_INPUT_MANAGER_H