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diff --git a/include/gui/SensorEventQueue.h b/include/gui/SensorEventQueue.h
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+++ b/include/gui/SensorEventQueue.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 ANDROID_SENSOR_EVENT_QUEUE_H
+#define ANDROID_SENSOR_EVENT_QUEUE_H
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <utils/Errors.h>
+#include <utils/RefBase.h>
+#include <utils/Timers.h>
+
+#include <gui/SensorChannel.h>
+
+// ----------------------------------------------------------------------------
+
+struct ALooper;
+struct ASensorEvent;
+
+// Concrete types for the NDK
+struct ASensorEventQueue {
+    ALooper* looper;
+};
+
+// ----------------------------------------------------------------------------
+namespace android {
+// ----------------------------------------------------------------------------
+
+class ISensorEventConnection;
+class Sensor;
+class PollLoop;
+
+// ----------------------------------------------------------------------------
+
+class SensorEventQueue : public ASensorEventQueue, public RefBase
+{
+public:
+            SensorEventQueue(const sp<ISensorEventConnection>& connection);
+    virtual ~SensorEventQueue();
+    virtual void onFirstRef();
+
+    int getFd() const;
+    ssize_t write(ASensorEvent const* events, size_t numEvents);
+    ssize_t read(ASensorEvent* events, size_t numEvents);
+
+    status_t waitForEvent() const;
+    status_t wake() const;
+
+    status_t enableSensor(Sensor const* sensor) const;
+    status_t disableSensor(Sensor const* sensor) const;
+    status_t setEventRate(Sensor const* sensor, nsecs_t ns) const;
+
+    // these are here only to support SensorManager.java
+    status_t enableSensor(int32_t handle, int32_t us) const;
+    status_t disableSensor(int32_t handle) const;
+
+private:
+    sp<PollLoop> getPollLoop() const;
+    sp<ISensorEventConnection> mSensorEventConnection;
+    sp<SensorChannel> mSensorChannel;
+    mutable Mutex mLock;
+    mutable sp<PollLoop> mPollLoop;
+};
+
+// ----------------------------------------------------------------------------
+}; // namespace android
+
+#endif // ANDROID_SENSOR_EVENT_QUEUE_H