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diff --git a/include/common_time/cc_helper.h b/include/common_time/cc_helper.h
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+++ b/include/common_time/cc_helper.h
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+/*
+ * Copyright (C) 2011 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 __CC_HELPER_H__
+#define __CC_HELPER_H__
+
+#include <stdint.h>
+#include <common_time/ICommonClock.h>
+#include <utils/threads.h>
+
+namespace android {
+
+// CCHelper is a simple wrapper class to help with centralizing access to the
+// Common Clock service and implementing lifetime managment, as well as to
+// implement a simple policy of making a basic attempt to reconnect to the
+// common clock service when things go wrong.
+//
+// On platforms which run the native common_time service in auto-disable mode,
+// the service will go into networkless mode whenever it has no active clients.
+// It tracks active clients using registered CommonClockListeners (the callback
+// interface for onTimelineChanged) since this provides a convienent death
+// handler notification for when the service's clients die unexpectedly.  This
+// means that users of the common time service should really always have a
+// CommonClockListener, unless they know that the time service is not running in
+// auto disabled mode, or that there is at least one other registered listener
+// active in the system.  The CCHelper makes this a little easier by sharing a
+// ref counted ICommonClock interface across all clients and automatically
+// registering and unregistering a listener whenever there are CCHelper
+// instances active in the process.
+class CCHelper {
+  public:
+    CCHelper();
+    ~CCHelper();
+
+    status_t isCommonTimeValid(bool* valid, uint32_t* timelineID);
+    status_t commonTimeToLocalTime(int64_t commonTime, int64_t* localTime);
+    status_t localTimeToCommonTime(int64_t localTime, int64_t* commonTime);
+    status_t getCommonTime(int64_t* commonTime);
+    status_t getCommonFreq(uint64_t* freq);
+    status_t getLocalTime(int64_t* localTime);
+    status_t getLocalFreq(uint64_t* freq);
+
+  private:
+    class CommonClockListener : public BnCommonClockListener {
+      public:
+        void onTimelineChanged(uint64_t timelineID);
+    };
+
+    static bool verifyClock_l();
+
+    static Mutex lock_;
+    static sp<ICommonClock> common_clock_;
+    static sp<ICommonClockListener> common_clock_listener_;
+    static uint32_t ref_count_;
+};
+
+
+}  // namespace android
+#endif  // __CC_HELPER_H__