diff --git a/media/libmediametrics/include/MediaAnalyticsItem.h b/media/libmediametrics/include/MediaAnalyticsItem.h
index f050e7f..dc501b2 100644
--- a/media/libmediametrics/include/MediaAnalyticsItem.h
+++ b/media/libmediametrics/include/MediaAnalyticsItem.h
@@ -41,6 +41,7 @@
     friend class MediaAnalyticsService;
     friend class IMediaAnalyticsService;
     friend class MediaMetricsJNI;
+    friend class MetricsSummarizer;
 
     public:
 
@@ -231,7 +232,6 @@
         size_t mPropCount;
         size_t mPropSize;
         Prop *mProps;
-
 };
 
 } // namespace android
diff --git a/services/mediaanalytics/Android.mk b/services/mediaanalytics/Android.mk
index f7197af..9e2813e 100644
--- a/services/mediaanalytics/Android.mk
+++ b/services/mediaanalytics/Android.mk
@@ -5,7 +5,12 @@
 include $(CLEAR_VARS)
 
 LOCAL_SRC_FILES:= \
-    main_mediametrics.cpp          \
+    main_mediametrics.cpp              \
+    MetricsSummarizerCodec.cpp         \
+    MetricsSummarizerExtractor.cpp     \
+    MetricsSummarizerPlayer.cpp        \
+    MetricsSummarizerRecorder.cpp      \
+    MetricsSummarizer.cpp              \
     MediaAnalyticsService.cpp
 
 LOCAL_SHARED_LIBRARIES := \
diff --git a/services/mediaanalytics/MediaAnalyticsService.cpp b/services/mediaanalytics/MediaAnalyticsService.cpp
index 35c1f5b..876c685 100644
--- a/services/mediaanalytics/MediaAnalyticsService.cpp
+++ b/services/mediaanalytics/MediaAnalyticsService.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2016 The Android Open Source Project
+ * Copyright (C) 2017 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.
@@ -20,6 +20,7 @@
 #define LOG_TAG "MediaAnalyticsService"
 #include <utils/Log.h>
 
+#include <stdint.h>
 #include <inttypes.h>
 #include <sys/types.h>
 #include <sys/stat.h>
@@ -70,11 +71,28 @@
 
 #include "MediaAnalyticsService.h"
 
+#include "MetricsSummarizer.h"
+#include "MetricsSummarizerCodec.h"
+#include "MetricsSummarizerExtractor.h"
+#include "MetricsSummarizerPlayer.h"
+#include "MetricsSummarizerRecorder.h"
+
 
 namespace android {
 
 
-#define DEBUG_QUEUE     0
+
+// summarized records
+// up to 48 sets, each covering an hour -- at least 2 days of coverage
+// (will be longer if there are hours without any media action)
+static const nsecs_t kNewSetIntervalNs = 3600*(1000*1000*1000ll);
+static const int kMaxRecordSets = 48;
+// individual records kept in memory
+static const int kMaxRecords    = 100;
+
+
+static const char *kServiceName = "media.metrics";
+
 
 //using android::status_t;
 //using android::OK;
@@ -85,18 +103,67 @@
 
 void MediaAnalyticsService::instantiate() {
     defaultServiceManager()->addService(
-            String16("media.metrics"), new MediaAnalyticsService());
+            String16(kServiceName), new MediaAnalyticsService());
 }
 
-// XXX: add dynamic controls for mMaxRecords
+// handle sets of summarizers
+MediaAnalyticsService::SummarizerSet::SummarizerSet() {
+    mSummarizers = new List<MetricsSummarizer *>();
+}
+MediaAnalyticsService::SummarizerSet::~SummarizerSet() {
+    // empty the list
+    List<MetricsSummarizer *> *l = mSummarizers;
+    while (l->size() > 0) {
+        MetricsSummarizer *summarizer = *(l->begin());
+        l->erase(l->begin());
+        delete summarizer;
+    }
+}
+
+void MediaAnalyticsService::newSummarizerSet() {
+    ALOGD("MediaAnalyticsService::newSummarizerSet");
+    MediaAnalyticsService::SummarizerSet *set = new MediaAnalyticsService::SummarizerSet();
+    nsecs_t now = systemTime(SYSTEM_TIME_REALTIME);
+    set->setStarted(now);
+
+    set->appendSummarizer(new MetricsSummarizerExtractor("extractor"));
+    set->appendSummarizer(new MetricsSummarizerCodec("codec"));
+    set->appendSummarizer(new MetricsSummarizerPlayer("nuplayer"));
+    set->appendSummarizer(new MetricsSummarizerRecorder("recorder"));
+
+    // ALWAYS at the end, since it catches everything
+    set->appendSummarizer(new MetricsSummarizer(NULL));
+
+    // inject this set at the BACK of the list.
+    mSummarizerSets->push_back(set);
+    mCurrentSet = set;
+
+    // limit the # that we have
+    if (mMaxRecordSets > 0) {
+        List<SummarizerSet *> *l = mSummarizerSets;
+        while (l->size() > (size_t) mMaxRecordSets) {
+            ALOGD("Deleting oldest record set....");
+            MediaAnalyticsService::SummarizerSet *oset = *(l->begin());
+            l->erase(l->begin());
+            delete oset;
+            mSetsDiscarded++;
+        }
+    }
+}
+
 MediaAnalyticsService::MediaAnalyticsService()
-        : mMaxRecords(100) {
+        : mMaxRecords(kMaxRecords),
+          mMaxRecordSets(kMaxRecordSets),
+          mNewSetInterval(kNewSetIntervalNs) {
 
     ALOGD("MediaAnalyticsService created");
     // clear our queues
     mOpen = new List<MediaAnalyticsItem *>();
     mFinalized = new List<MediaAnalyticsItem *>();
 
+    mSummarizerSets = new List<MediaAnalyticsService::SummarizerSet *>();
+    newSummarizerSet();
+
     mItemsSubmitted = 0;
     mItemsFinalized = 0;
     mItemsDiscarded = 0;
@@ -109,7 +176,13 @@
 MediaAnalyticsService::~MediaAnalyticsService() {
         ALOGD("MediaAnalyticsService destroyed");
 
-    // XXX: clean out mOpen and mFinalized
+    // clean out mOpen and mFinalized
+    delete mOpen;
+    mOpen = NULL;
+    delete mFinalized;
+    mFinalized = NULL;
+
+    // XXX: clean out the summaries
 }
 
 
@@ -145,7 +218,7 @@
         case AID_MEDIA_EX:
         case AID_MEDIA_DRM:
             // trusted source, only override default values
-            isTrusted = true;
+                isTrusted = true;
             if (uid_given == (-1)) {
                 item->setUid(uid);
             }
@@ -197,10 +270,12 @@
                 oitem = NULL;
             } else {
                 oitem->setFinalized(true);
+                summarize(oitem);
                 saveItem(mFinalized, oitem, 0);
             }
             // new record could itself be marked finalized...
             if (finalizing) {
+                summarize(item);
                 saveItem(mFinalized, item, 0);
                 mItemsFinalized++;
             } else {
@@ -211,6 +286,7 @@
             // combine the records, send it to finalized if appropriate
             oitem->merge(item);
             if (finalizing) {
+                summarize(oitem);
                 saveItem(mFinalized, oitem, 0);
                 mItemsFinalized++;
             }
@@ -229,6 +305,7 @@
                 delete item;
                 item = NULL;
             } else {
+                summarize(item);
                 saveItem(mFinalized, item, 0);
                 mItemsFinalized++;
             }
@@ -239,26 +316,6 @@
     return id;
 }
 
-List<MediaAnalyticsItem *> *MediaAnalyticsService::getMediaAnalyticsItemList(bool finished, nsecs_t ts) {
-    // this might never get called; the binder interface maps to the full parm list
-    // on the client side before making the binder call.
-    // but this lets us be sure...
-    List<MediaAnalyticsItem*> *list;
-    list = getMediaAnalyticsItemList(finished, ts, MediaAnalyticsItem::kKeyAny);
-    return list;
-}
-
-List<MediaAnalyticsItem *> *MediaAnalyticsService::getMediaAnalyticsItemList(bool , nsecs_t , MediaAnalyticsItem::Key ) {
-
-    // XXX: implement the get-item-list semantics
-
-    List<MediaAnalyticsItem *> *list = NULL;
-    // set up our query on the persistent data
-    // slurp in all of the pieces
-    // return that
-    return list;
-}
-
 status_t MediaAnalyticsService::dump(int fd, const Vector<String16>& args)
 {
     const size_t SIZE = 512;
@@ -277,15 +334,21 @@
 
     // crack any parameters
     bool clear = false;
+    bool summary = false;
     nsecs_t ts_since = 0;
+    String16 summaryOption("-summary");
     String16 clearOption("-clear");
     String16 sinceOption("-since");
     String16 helpOption("-help");
+    String16 onlyOption("-only");
+    const char *only = NULL;
     int n = args.size();
     for (int i = 0; i < n; i++) {
         String8 myarg(args[i]);
         if (args[i] == clearOption) {
             clear = true;
+        } else if (args[i] == summaryOption) {
+            summary = true;
         } else if (args[i] == sinceOption) {
             i++;
             if (i < n) {
@@ -301,12 +364,27 @@
             }
             // command line is milliseconds; internal units are nano-seconds
             ts_since *= 1000*1000;
+        } else if (args[i] == onlyOption) {
+            i++;
+            if (i < n) {
+                String8 value(args[i]);
+                const char *p = value.string();
+                char *q = strdup(p);
+                if (q != NULL) {
+                    if (only != NULL) {
+                        free((void*)only);
+                    }
+                only = q;
+                }
+            }
         } else if (args[i] == helpOption) {
             result.append("Recognized parameters:\n");
             result.append("-help        this help message\n");
+            result.append("-summary     show summary info\n");
             result.append("-clear       clears out saved records\n");
-            result.append("-since XXX   include records since XXX\n");
-            result.append("             (XXX is milliseconds since the UNIX epoch)\n");
+            result.append("-only X      process records for component X\n");
+            result.append("-since X     include records since X\n");
+            result.append("             (X is milliseconds since the UNIX epoch)\n");
             write(fd, result.string(), result.size());
             return NO_ERROR;
         }
@@ -314,9 +392,42 @@
 
     Mutex::Autolock _l(mLock);
 
-    snprintf(buffer, SIZE, "Dump of the mediametrics process:\n");
+    // we ALWAYS dump this piece
+    snprintf(buffer, SIZE, "Dump of the %s process:\n", kServiceName);
     result.append(buffer);
 
+    dumpHeaders(result, ts_since);
+
+    // only want 1, to avoid confusing folks that parse the output
+    if (summary) {
+        dumpSummaries(result, ts_since, only);
+    } else {
+        dumpRecent(result, ts_since, only);
+    }
+
+
+    if (clear) {
+        // remove everything from the finalized queue
+        while (mFinalized->size() > 0) {
+            MediaAnalyticsItem * oitem = *(mFinalized->begin());
+            mFinalized->erase(mFinalized->begin());
+            delete oitem;
+            mItemsDiscarded++;
+        }
+
+        // shall we clear the summary data too?
+
+    }
+
+    write(fd, result.string(), result.size());
+    return NO_ERROR;
+}
+
+// dump headers
+void MediaAnalyticsService::dumpHeaders(String8 &result, nsecs_t ts_since) {
+    const size_t SIZE = 512;
+    char buffer[SIZE];
+
     int enabled = MediaAnalyticsItem::isEnabled();
     if (enabled) {
         snprintf(buffer, SIZE, "Metrics gathering: enabled\n");
@@ -331,50 +442,71 @@
         " Discarded: %" PRId64 "\n",
         mItemsSubmitted, mItemsFinalized, mItemsDiscarded);
     result.append(buffer);
+    snprintf(buffer, SIZE,
+        "Summary Sets Discarded: %" PRId64 "\n", mSetsDiscarded);
+    result.append(buffer);
     if (ts_since != 0) {
         snprintf(buffer, SIZE,
             "Dumping Queue entries more recent than: %" PRId64 "\n",
             (int64_t) ts_since);
         result.append(buffer);
     }
+}
+
+// dump summary info
+void MediaAnalyticsService::dumpSummaries(String8 &result, nsecs_t ts_since, const char *only) {
+    const size_t SIZE = 512;
+    char buffer[SIZE];
+    int slot = 0;
+
+    snprintf(buffer, SIZE, "\nSummarized Metrics:\n");
+    result.append(buffer);
+
+    // have each of the distillers dump records
+    if (mSummarizerSets != NULL) {
+        List<SummarizerSet *>::iterator itSet = mSummarizerSets->begin();
+        for (; itSet != mSummarizerSets->end(); itSet++) {
+            nsecs_t when = (*itSet)->getStarted();
+            if (when < ts_since) {
+                continue;
+            }
+            List<MetricsSummarizer *> *list = (*itSet)->getSummarizers();
+            List<MetricsSummarizer *>::iterator it = list->begin();
+            for (; it != list->end(); it++) {
+                if (only != NULL && strcmp(only, (*it)->getKey()) != 0) {
+                    ALOGV("Told to omit '%s'", (*it)->getKey());
+                }
+                AString distilled = (*it)->dumpSummary(slot, only);
+                result.append(distilled.c_str());
+            }
+        }
+    }
+}
+
+// the recent, detailed queues
+void MediaAnalyticsService::dumpRecent(String8 &result, nsecs_t ts_since, const char * only) {
+    const size_t SIZE = 512;
+    char buffer[SIZE];
 
     // show the recently recorded records
     snprintf(buffer, sizeof(buffer), "\nFinalized Metrics (oldest first):\n");
     result.append(buffer);
-    result.append(this->dumpQueue(mFinalized, ts_since));
+    result.append(this->dumpQueue(mFinalized, ts_since, only));
 
     snprintf(buffer, sizeof(buffer), "\nIn-Progress Metrics (newest first):\n");
     result.append(buffer);
-    result.append(this->dumpQueue(mOpen, ts_since));
+    result.append(this->dumpQueue(mOpen, ts_since, only));
 
     // show who is connected and injecting records?
     // talk about # records fed to the 'readers'
     // talk about # records we discarded, perhaps "discarded w/o reading" too
-
-    if (clear) {
-        // remove everything from the finalized queue
-        while (mFinalized->size() > 0) {
-            MediaAnalyticsItem * oitem = *(mFinalized->begin());
-            if (DEBUG_QUEUE) {
-                ALOGD("zap old record: key %s sessionID %" PRId64 " ts %" PRId64 "",
-                    oitem->getKey().c_str(), oitem->getSessionID(),
-                    oitem->getTimestamp());
-            }
-            mFinalized->erase(mFinalized->begin());
-            mItemsDiscarded++;
-        }
-    }
-
-    write(fd, result.string(), result.size());
-    return NO_ERROR;
 }
-
 // caller has locked mLock...
 String8 MediaAnalyticsService::dumpQueue(List<MediaAnalyticsItem *> *theList) {
-    return dumpQueue(theList, (nsecs_t) 0);
+    return dumpQueue(theList, (nsecs_t) 0, NULL);
 }
 
-String8 MediaAnalyticsService::dumpQueue(List<MediaAnalyticsItem *> *theList, nsecs_t ts_since) {
+String8 MediaAnalyticsService::dumpQueue(List<MediaAnalyticsItem *> *theList, nsecs_t ts_since, const char * only) {
     String8 result;
     int slot = 0;
 
@@ -387,6 +519,11 @@
             if (when < ts_since) {
                 continue;
             }
+            if (only != NULL &&
+                strcmp(only, (*it)->getKey().c_str()) != 0) {
+                ALOGV("Omit '%s', it's not '%s'", (*it)->getKey().c_str(), only);
+                continue;
+            }
             AString entry = (*it)->toString();
             result.appendFormat("%5d: %s\n", slot, entry.c_str());
             slot++;
@@ -405,13 +542,6 @@
 
     Mutex::Autolock _l(mLock);
 
-    if (DEBUG_QUEUE) {
-        ALOGD("Inject a record: session %" PRId64 " ts %" PRId64 "",
-            item->getSessionID(), item->getTimestamp());
-        String8 before = dumpQueue(l);
-        ALOGD("Q before insert: %s", before.string());
-    }
-
     // adding at back of queue (fifo order)
     if (front)  {
         l->push_front(item);
@@ -419,30 +549,15 @@
         l->push_back(item);
     }
 
-    if (DEBUG_QUEUE) {
-        String8 after = dumpQueue(l);
-        ALOGD("Q after insert: %s", after.string());
-    }
-
     // keep removing old records the front until we're in-bounds
     if (mMaxRecords > 0) {
         while (l->size() > (size_t) mMaxRecords) {
             MediaAnalyticsItem * oitem = *(l->begin());
-            if (DEBUG_QUEUE) {
-                ALOGD("zap old record: key %s sessionID %" PRId64 " ts %" PRId64 "",
-                    oitem->getKey().c_str(), oitem->getSessionID(),
-                    oitem->getTimestamp());
-            }
             l->erase(l->begin());
             delete oitem;
             mItemsDiscarded++;
         }
     }
-
-    if (DEBUG_QUEUE) {
-        String8 after = dumpQueue(l);
-        ALOGD("Q after cleanup: %s", after.string());
-    }
 }
 
 // are they alike enough that nitem can be folded into oitem?
@@ -515,29 +630,14 @@
 
     Mutex::Autolock _l(mLock);
 
-    if(DEBUG_QUEUE) {
-        String8 before = dumpQueue(l);
-        ALOGD("Q before delete: %s", before.string());
-    }
-
     for (List<MediaAnalyticsItem *>::iterator it = l->begin();
         it != l->end(); it++) {
         if ((*it)->getSessionID() != item->getSessionID())
             continue;
-
-        if (DEBUG_QUEUE) {
-            ALOGD(" --- removing record for SessionID %" PRId64 "", item->getSessionID());
-            ALOGD("drop record at %s:%d", __FILE__, __LINE__);
-        }
         delete *it;
         l->erase(it);
         break;
     }
-
-    if (DEBUG_QUEUE) {
-        String8 after = dumpQueue(l);
-        ALOGD("Q after delete: %s", after.string());
-    }
 }
 
 static AString allowedKeys[] =
@@ -579,5 +679,43 @@
     return false;
 }
 
+// insert into the appropriate summarizer.
+// we make our own copy to save/summarize
+void MediaAnalyticsService::summarize(MediaAnalyticsItem *item) {
+
+    ALOGV("MediaAnalyticsService::summarize()");
+
+    if (item == NULL) {
+        return;
+    }
+
+    nsecs_t now = systemTime(SYSTEM_TIME_REALTIME);
+    if (mCurrentSet == NULL
+        || (mCurrentSet->getStarted() + mNewSetInterval < now)) {
+        newSummarizerSet();
+    }
+
+    if (mCurrentSet == NULL) {
+        return;
+    }
+
+    List<MetricsSummarizer *> *summarizers = mCurrentSet->getSummarizers();
+    List<MetricsSummarizer *>::iterator it = summarizers->begin();
+    for (; it != summarizers->end(); it++) {
+        if ((*it)->isMine(*item)) {
+            break;
+        }
+    }
+    if (it == summarizers->end()) {
+        ALOGD("no handler for type %s", item->getKey().c_str());
+        return;               // no handler
+    }
+
+    // invoke the summarizer. summarizer will make whatever copies
+    // it wants; the caller retains ownership of item.
+
+    (*it)->handleRecord(item);
+
+}
 
 } // namespace android
diff --git a/services/mediaanalytics/MediaAnalyticsService.h b/services/mediaanalytics/MediaAnalyticsService.h
index d2b0f09..6685967 100644
--- a/services/mediaanalytics/MediaAnalyticsService.h
+++ b/services/mediaanalytics/MediaAnalyticsService.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2016 The Android Open Source Project
+ * Copyright (C) 2017 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.
@@ -28,6 +28,8 @@
 
 #include <media/IMediaAnalyticsService.h>
 
+#include "MetricsSummarizer.h"
+
 
 namespace android {
 
@@ -39,12 +41,6 @@
     // on this side, caller surrenders ownership
     virtual int64_t submit(MediaAnalyticsItem *item, bool forcenew);
 
-    virtual List<MediaAnalyticsItem *>
-            *getMediaAnalyticsItemList(bool finished, int64_t ts);
-    virtual List<MediaAnalyticsItem *>
-            *getMediaAnalyticsItemList(bool finished, int64_t ts, MediaAnalyticsItem::Key key);
-
-
     static  void            instantiate();
     virtual status_t        dump(int fd, const Vector<String16>& args);
 
@@ -58,6 +54,7 @@
     int64_t mItemsSubmitted;
     int64_t mItemsFinalized;
     int64_t mItemsDiscarded;
+    int64_t mSetsDiscarded;
     MediaAnalyticsItem::SessionID_t mLastSessionID;
 
     // partitioned a bit so we don't over serialize
@@ -67,6 +64,10 @@
     // the most we hold in memory
     // up to this many in each queue (open, finalized)
     int32_t mMaxRecords;
+    // # of sets of summaries
+    int32_t mMaxRecordSets;
+    // nsecs until we start a new record set
+    nsecs_t mNewSetInterval;
 
     // input validation after arrival from client
     bool contentValid(MediaAnalyticsItem *item, bool isTrusted);
@@ -82,12 +83,47 @@
     MediaAnalyticsItem *findItem(List<MediaAnalyticsItem *> *,
                                      MediaAnalyticsItem *, bool removeit);
 
+    // summarizers
+    void summarize(MediaAnalyticsItem *item);
+    class SummarizerSet {
+        nsecs_t mStarted;
+        List<MetricsSummarizer *> *mSummarizers;
+
+      public:
+        void appendSummarizer(MetricsSummarizer *s) {
+            if (s) {
+                mSummarizers->push_back(s);
+            }
+        };
+        nsecs_t getStarted() { return mStarted;}
+        void setStarted(nsecs_t started) {mStarted = started;}
+        List<MetricsSummarizer *> *getSummarizers() { return mSummarizers;}
+
+        SummarizerSet();
+        ~SummarizerSet();
+    };
+    void newSummarizerSet();
+    List<SummarizerSet *> *mSummarizerSets;
+    SummarizerSet *mCurrentSet;
+    List<MetricsSummarizer *> *getFirstSet() {
+        List<SummarizerSet *>::iterator first = mSummarizerSets->begin();
+        if (first != mSummarizerSets->end()) {
+            return (*first)->getSummarizers();
+        }
+        return NULL;
+    }
+
     void saveItem(MediaAnalyticsItem);
     void saveItem(List<MediaAnalyticsItem *> *, MediaAnalyticsItem *, int);
     void deleteItem(List<MediaAnalyticsItem *> *, MediaAnalyticsItem *);
 
+    // support for generating output
     String8 dumpQueue(List<MediaAnalyticsItem*> *);
-    String8 dumpQueue(List<MediaAnalyticsItem*> *, nsecs_t);
+    String8 dumpQueue(List<MediaAnalyticsItem*> *, nsecs_t, const char *only);
+
+    void dumpHeaders(String8 &result, nsecs_t ts_since);
+    void dumpSummaries(String8 &result, nsecs_t ts_since, const char * only);
+    void dumpRecent(String8 &result, nsecs_t ts_since, const char * only);
 
 };
 
diff --git a/services/mediaanalytics/MetricsSummarizer.cpp b/services/mediaanalytics/MetricsSummarizer.cpp
new file mode 100644
index 0000000..6d5787e
--- /dev/null
+++ b/services/mediaanalytics/MetricsSummarizer.cpp
@@ -0,0 +1,281 @@
+/*
+ * Copyright (C) 2017 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.
+ */
+
+#define LOG_TAG "MetricsSummarizer"
+#include <utils/Log.h>
+
+#include <stdlib.h>
+#include <stdint.h>
+#include <inttypes.h>
+
+#include <utils/threads.h>
+#include <utils/Errors.h>
+#include <utils/KeyedVector.h>
+#include <utils/String8.h>
+#include <utils/List.h>
+
+#include <media/IMediaAnalyticsService.h>
+
+#include "MetricsSummarizer.h"
+
+
+namespace android {
+
+#define DEBUG_SORT      0
+#define DEBUG_QUEUE     0
+
+
+MetricsSummarizer::MetricsSummarizer(const char *key)
+    : mIgnorables(NULL)
+{
+    ALOGV("MetricsSummarizer::MetricsSummarizer");
+
+    if (key == NULL) {
+        mKey = key;
+    } else {
+        mKey = strdup(key);
+    }
+
+    mSummaries = new List<MediaAnalyticsItem *>();
+}
+
+MetricsSummarizer::~MetricsSummarizer()
+{
+    ALOGV("MetricsSummarizer::~MetricsSummarizer");
+    if (mKey) {
+        free((void *)mKey);
+        mKey = NULL;
+    }
+
+    // clear the list of items we have saved
+    while (mSummaries->size() > 0) {
+        MediaAnalyticsItem * oitem = *(mSummaries->begin());
+        if (DEBUG_QUEUE) {
+            ALOGD("zap old record: key %s sessionID %" PRId64 " ts %" PRId64 "",
+                oitem->getKey().c_str(), oitem->getSessionID(),
+                oitem->getTimestamp());
+        }
+        mSummaries->erase(mSummaries->begin());
+        delete oitem;
+    }
+}
+
+// so we know what summarizer we were using
+const char *MetricsSummarizer::getKey() {
+    const char *value = mKey;
+    if (value == NULL) {
+        value = "unknown";
+    }
+    return value;
+}
+
+// should the record be given to this summarizer
+bool MetricsSummarizer::isMine(MediaAnalyticsItem &item)
+{
+    if (mKey == NULL)
+        return true;
+    AString itemKey = item.getKey();
+    if (strcmp(mKey, itemKey.c_str()) != 0) {
+        return false;
+    }
+    return true;
+}
+
+AString MetricsSummarizer::dumpSummary(int &slot)
+{
+    return dumpSummary(slot, NULL);
+}
+
+AString MetricsSummarizer::dumpSummary(int &slot, const char *only)
+{
+    AString value = "";
+
+    List<MediaAnalyticsItem *>::iterator it = mSummaries->begin();
+    if (it != mSummaries->end()) {
+        char buf[16];   // enough for "#####: "
+        for (; it != mSummaries->end(); it++) {
+            if (only != NULL && strcmp(only, (*it)->getKey().c_str()) != 0) {
+                continue;
+            }
+            AString entry = (*it)->toString();
+            snprintf(buf, sizeof(buf), "%5d: ", slot);
+            value.append(buf);
+            value.append(entry.c_str());
+            value.append("\n");
+            slot++;
+        }
+    }
+    return value;
+}
+
+void MetricsSummarizer::setIgnorables(const char **ignorables) {
+    mIgnorables = ignorables;
+}
+
+const char **MetricsSummarizer::getIgnorables() {
+    return mIgnorables;
+}
+
+void MetricsSummarizer::handleRecord(MediaAnalyticsItem *item) {
+
+    ALOGV("MetricsSummarizer::handleRecord() for %s",
+                item == NULL ? "<nothing>" : item->toString().c_str());
+
+    if (item == NULL) {
+        return;
+    }
+
+    List<MediaAnalyticsItem *>::iterator it = mSummaries->begin();
+    for (; it != mSummaries->end(); it++) {
+        bool good = sameAttributes((*it), item, getIgnorables());
+        ALOGV("Match against %s says %d",
+              (*it)->toString().c_str(), good);
+        if (good)
+            break;
+    }
+    if (it == mSummaries->end()) {
+            ALOGV("save new record");
+            item = item->dup();
+            if (item == NULL) {
+                ALOGE("unable to save MediaMetrics record");
+            }
+            sortProps(item);
+            item->setInt32("aggregated",1);
+            mSummaries->push_back(item);
+    } else {
+            ALOGV("increment existing record");
+            (*it)->addInt32("aggregated",1);
+            mergeRecord(*(*it), *item);
+    }
+}
+
+void MetricsSummarizer::mergeRecord(MediaAnalyticsItem &/*have*/, MediaAnalyticsItem &/*item*/) {
+    // default is no further massaging.
+    ALOGV("MetricsSummarizer::mergeRecord() [default]");
+    return;
+}
+
+
+//
+// Comparators
+//
+
+// testing that all of 'single' is in 'summ'
+// and that the values match.
+// 'summ' may have extra fields.
+// 'ignorable' is a set of things that we don't worry about matching up
+// (usually time- or count-based values we'll sum elsewhere)
+bool MetricsSummarizer::sameAttributes(MediaAnalyticsItem *summ, MediaAnalyticsItem *single, const char **ignorable) {
+
+    if (single == NULL || summ == NULL) {
+        return false;
+    }
+    ALOGV("MetricsSummarizer::sameAttributes(): summ %s", summ->toString().c_str());
+    ALOGV("MetricsSummarizer::sameAttributes(): single %s", single->toString().c_str());
+
+    // this can be made better.
+    for(size_t i=0;i<single->mPropCount;i++) {
+        MediaAnalyticsItem::Prop *prop1 = &(single->mProps[i]);
+        const char *attrName = prop1->mName;
+        ALOGV("compare on attr '%s'", attrName);
+
+        // is it something we should ignore
+        if (ignorable != NULL) {
+            const char **ig = ignorable;
+            while (*ig) {
+                if (strcmp(*ig, attrName) == 0) {
+                    break;
+                }
+                ig++;
+            }
+            if (*ig) {
+                ALOGV("we don't mind that it has attr '%s'", attrName);
+                continue;
+            }
+        }
+
+        MediaAnalyticsItem::Prop *prop2 = summ->findProp(attrName);
+        if (prop2 == NULL) {
+            ALOGV("summ doesn't have this attr");
+            return false;
+        }
+        if (prop1->mType != prop2->mType) {
+            ALOGV("mismatched attr types");
+            return false;
+        }
+        switch (prop1->mType) {
+            case MediaAnalyticsItem::kTypeInt32:
+                if (prop1->u.int32Value != prop2->u.int32Value)
+                    return false;
+                break;
+            case MediaAnalyticsItem::kTypeInt64:
+                if (prop1->u.int64Value != prop2->u.int64Value)
+                    return false;
+                break;
+            case MediaAnalyticsItem::kTypeDouble:
+                // XXX: watch out for floating point comparisons!
+                if (prop1->u.doubleValue != prop2->u.doubleValue)
+                    return false;
+                break;
+            case MediaAnalyticsItem::kTypeCString:
+                if (strcmp(prop1->u.CStringValue, prop2->u.CStringValue) != 0)
+                    return false;
+                break;
+            case MediaAnalyticsItem::kTypeRate:
+                if (prop1->u.rate.count != prop2->u.rate.count)
+                    return false;
+                if (prop1->u.rate.duration != prop2->u.rate.duration)
+                    return false;
+                break;
+            default:
+                return false;
+        }
+    }
+
+    return true;
+}
+
+bool MetricsSummarizer::sameAttributesId(MediaAnalyticsItem *summ, MediaAnalyticsItem *single, const char **ignorable) {
+
+    // verify same user
+    if (summ->mPid != single->mPid)
+        return false;
+
+    // and finally do the more expensive validation of the attributes
+    return sameAttributes(summ, single, ignorable);
+}
+
+int MetricsSummarizer::PropSorter(const void *a, const void *b) {
+    MediaAnalyticsItem::Prop *ai = (MediaAnalyticsItem::Prop *)a;
+    MediaAnalyticsItem::Prop *bi = (MediaAnalyticsItem::Prop *)b;
+    return strcmp(ai->mName, bi->mName);
+}
+
+// we sort in the summaries so that it looks pretty in the dumpsys
+void MetricsSummarizer::sortProps(MediaAnalyticsItem *item) {
+    if (item->mPropCount != 0) {
+        if (DEBUG_SORT) {
+            ALOGD("sortProps(pre): %s", item->toString().c_str());
+        }
+        qsort(item->mProps, item->mPropCount,
+              sizeof(MediaAnalyticsItem::Prop), MetricsSummarizer::PropSorter);
+        if (DEBUG_SORT) {
+            ALOGD("sortProps(pst): %s", item->toString().c_str());
+        }
+    }
+}
+
+} // namespace android
diff --git a/services/mediaanalytics/MetricsSummarizer.h b/services/mediaanalytics/MetricsSummarizer.h
new file mode 100644
index 0000000..0b64eac
--- /dev/null
+++ b/services/mediaanalytics/MetricsSummarizer.h
@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 2017 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_METRICSSUMMARIZER_H
+#define ANDROID_METRICSSUMMARIZER_H
+
+#include <utils/threads.h>
+#include <utils/Errors.h>
+#include <utils/KeyedVector.h>
+#include <utils/String8.h>
+#include <utils/List.h>
+
+#include <media/IMediaAnalyticsService.h>
+
+
+namespace android {
+
+class MetricsSummarizer
+{
+
+ public:
+
+    MetricsSummarizer(const char *key);
+    virtual ~MetricsSummarizer();
+
+    // show the key
+    const char * getKey();
+
+    // should the record be given to this summarizer
+    bool isMine(MediaAnalyticsItem &item);
+
+    // hand the record to this summarizer
+    void handleRecord(MediaAnalyticsItem *item);
+
+    virtual void mergeRecord(MediaAnalyticsItem &have, MediaAnalyticsItem &incoming);
+
+    // dump the summarized records (for dumpsys)
+    AString dumpSummary(int &slot);
+    AString dumpSummary(int &slot, const char *only);
+
+    void setIgnorables(const char **);
+    const char **getIgnorables();
+
+ protected:
+
+    // various comparators
+    // "do these records have same attributes and values in those attrs"
+    // ditto, but watch for "error" fields
+    bool sameAttributes(MediaAnalyticsItem *summ, MediaAnalyticsItem *single, const char **ignoreables);
+    // attributes + from the same app/userid
+    bool sameAttributesId(MediaAnalyticsItem *summ, MediaAnalyticsItem *single, const char **ignoreables);
+
+    static int PropSorter(const void *a, const void *b);
+    void sortProps(MediaAnalyticsItem *item);
+
+ private:
+    const char *mKey;
+    const char **mIgnorables;
+    List<MediaAnalyticsItem *> *mSummaries;
+
+
+};
+
+// ----------------------------------------------------------------------------
+
+}; // namespace android
+
+#endif // ANDROID_METRICSSUMMARIZER_H
diff --git a/services/mediaanalytics/MetricsSummarizerCodec.cpp b/services/mediaanalytics/MetricsSummarizerCodec.cpp
new file mode 100644
index 0000000..8c74782
--- /dev/null
+++ b/services/mediaanalytics/MetricsSummarizerCodec.cpp
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2017 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.
+ */
+
+#define LOG_TAG "MetricsSummarizerCodec"
+#include <utils/Log.h>
+
+
+#include <utils/threads.h>
+#include <utils/Errors.h>
+#include <utils/KeyedVector.h>
+#include <utils/String8.h>
+#include <utils/List.h>
+
+#include <media/IMediaAnalyticsService.h>
+
+#include "MetricsSummarizer.h"
+#include "MetricsSummarizerCodec.h"
+
+
+
+
+namespace android {
+
+MetricsSummarizerCodec::MetricsSummarizerCodec(const char *key)
+    : MetricsSummarizer(key)
+{
+    ALOGV("MetricsSummarizerCodec::MetricsSummarizerCodec");
+}
+
+
+} // namespace android
diff --git a/services/mediaanalytics/MetricsSummarizerCodec.h b/services/mediaanalytics/MetricsSummarizerCodec.h
new file mode 100644
index 0000000..c01196f
--- /dev/null
+++ b/services/mediaanalytics/MetricsSummarizerCodec.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2017 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_METRICSSUMMARIZERCODEC_H
+#define ANDROID_METRICSSUMMARIZERCODEC_H
+
+#include <utils/threads.h>
+#include <utils/Errors.h>
+#include <utils/KeyedVector.h>
+#include <utils/String8.h>
+#include <utils/List.h>
+
+#include <media/IMediaAnalyticsService.h>
+#include "MetricsSummarizer.h"
+
+
+namespace android {
+
+class MetricsSummarizerCodec : public MetricsSummarizer
+{
+
+ public:
+
+    MetricsSummarizerCodec(const char *key);
+    virtual ~MetricsSummarizerCodec() {};
+
+};
+
+// ----------------------------------------------------------------------------
+
+}; // namespace android
+
+#endif // ANDROID_METRICSSUMMARIZERCODEC_H
diff --git a/services/mediaanalytics/MetricsSummarizerExtractor.cpp b/services/mediaanalytics/MetricsSummarizerExtractor.cpp
new file mode 100644
index 0000000..190f87d
--- /dev/null
+++ b/services/mediaanalytics/MetricsSummarizerExtractor.cpp
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2017 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.
+ */
+
+#define LOG_TAG "MetricsSummarizerExtractor"
+#include <utils/Log.h>
+
+#include <utils/threads.h>
+#include <utils/Errors.h>
+#include <utils/KeyedVector.h>
+#include <utils/String8.h>
+#include <utils/List.h>
+
+#include <media/IMediaAnalyticsService.h>
+
+#include "MetricsSummarizer.h"
+#include "MetricsSummarizerExtractor.h"
+
+
+
+
+namespace android {
+
+MetricsSummarizerExtractor::MetricsSummarizerExtractor(const char *key)
+    : MetricsSummarizer(key)
+{
+    ALOGV("MetricsSummarizerExtractor::MetricsSummarizerExtractor");
+}
+
+} // namespace android
diff --git a/services/mediaanalytics/MetricsSummarizerExtractor.h b/services/mediaanalytics/MetricsSummarizerExtractor.h
new file mode 100644
index 0000000..eee052b
--- /dev/null
+++ b/services/mediaanalytics/MetricsSummarizerExtractor.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2017 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_METRICSSUMMARIZEREXTRACTOR_H
+#define ANDROID_METRICSSUMMARIZEREXTRACTOR_H
+
+#include <utils/threads.h>
+#include <utils/Errors.h>
+#include <utils/KeyedVector.h>
+#include <utils/String8.h>
+#include <utils/List.h>
+
+#include <media/IMediaAnalyticsService.h>
+#include "MetricsSummarizer.h"
+
+
+namespace android {
+
+class MetricsSummarizerExtractor : public MetricsSummarizer
+{
+
+ public:
+
+    MetricsSummarizerExtractor(const char *key);
+    virtual ~MetricsSummarizerExtractor() {};
+
+};
+
+// ----------------------------------------------------------------------------
+
+}; // namespace android
+
+#endif // ANDROID_METRICSSUMMARIZEREXTRACTOR_H
diff --git a/services/mediaanalytics/MetricsSummarizerPlayer.cpp b/services/mediaanalytics/MetricsSummarizerPlayer.cpp
new file mode 100644
index 0000000..5162059
--- /dev/null
+++ b/services/mediaanalytics/MetricsSummarizerPlayer.cpp
@@ -0,0 +1,87 @@
+/*
+ * Copyright (C) 2017 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.
+ */
+
+#define LOG_TAG "MetricsSummarizerPlayer"
+#include <utils/Log.h>
+
+#include <stdint.h>
+#include <inttypes.h>
+
+#include <utils/threads.h>
+#include <utils/Errors.h>
+#include <utils/KeyedVector.h>
+#include <utils/String8.h>
+#include <utils/List.h>
+
+#include <media/IMediaAnalyticsService.h>
+
+#include "MetricsSummarizer.h"
+#include "MetricsSummarizerPlayer.h"
+
+
+
+
+namespace android {
+
+static const char *player_ignorable[] = {
+    "android.media.mediaplayer.durationMs",
+    "android.media.mediaplayer.playingMs",
+    "android.media.mediaplayer.frames",
+    "android.media.mediaplayer.dropped",
+    0
+};
+
+MetricsSummarizerPlayer::MetricsSummarizerPlayer(const char *key)
+    : MetricsSummarizer(key)
+{
+    ALOGV("MetricsSummarizerPlayer::MetricsSummarizerPlayer");
+    setIgnorables(player_ignorable);
+}
+
+void MetricsSummarizerPlayer::mergeRecord(MediaAnalyticsItem &summation, MediaAnalyticsItem &item) {
+
+    ALOGV("MetricsSummarizerPlayer::mergeRecord()");
+
+    //
+    // we sum time & frames.
+    // be careful about our special "-1" values that indicate 'unknown'
+    // treat those as 0 [basically, not summing them into the totals].
+    int64_t duration = 0;
+    if (item.getInt64("android.media.mediaplayer.durationMs", &duration)) {
+        ALOGV("found durationMs of %" PRId64, duration);
+        summation.addInt64("android.media.mediaplayer.durationMs",duration);
+    }
+    int64_t playing = 0;
+    if (item.getInt64("android.media.mediaplayer.playingMs", &playing))
+        ALOGV("found playingMs of %" PRId64, playing);
+        if (playing >= 0) {
+            summation.addInt64("android.media.mediaplayer.playingMs",playing);
+        }
+    int64_t frames = 0;
+    if (item.getInt64("android.media.mediaplayer.frames", &frames))
+        ALOGV("found framess of %" PRId64, frames);
+        if (frames >= 0) {
+            summation.addInt64("android.media.mediaplayer.frames",frames);
+        }
+    int64_t dropped = 0;
+    if (item.getInt64("android.media.mediaplayer.dropped", &dropped))
+        ALOGV("found dropped of %" PRId64, dropped);
+        if (dropped >= 0) {
+            summation.addInt64("android.media.mediaplayer.dropped",dropped);
+        }
+}
+
+} // namespace android
diff --git a/services/mediaanalytics/MetricsSummarizerPlayer.h b/services/mediaanalytics/MetricsSummarizerPlayer.h
new file mode 100644
index 0000000..ad1bf74
--- /dev/null
+++ b/services/mediaanalytics/MetricsSummarizerPlayer.h
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2017 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_METRICSSUMMARIZERPLAYER_H
+#define ANDROID_METRICSSUMMARIZERPLAYER_H
+
+#include <utils/threads.h>
+#include <utils/Errors.h>
+#include <utils/KeyedVector.h>
+#include <utils/String8.h>
+#include <utils/List.h>
+
+#include <media/IMediaAnalyticsService.h>
+#include "MetricsSummarizer.h"
+
+
+namespace android {
+
+class MetricsSummarizerPlayer : public MetricsSummarizer
+{
+
+ public:
+
+    MetricsSummarizerPlayer(const char *key);
+    virtual ~MetricsSummarizerPlayer() {};
+
+    virtual void mergeRecord(MediaAnalyticsItem &have, MediaAnalyticsItem &incoming);
+
+};
+
+// ----------------------------------------------------------------------------
+
+}; // namespace android
+
+#endif // ANDROID_METRICSSUMMARIZERPLAYER_H
diff --git a/services/mediaanalytics/MetricsSummarizerRecorder.cpp b/services/mediaanalytics/MetricsSummarizerRecorder.cpp
new file mode 100644
index 0000000..c2919c3
--- /dev/null
+++ b/services/mediaanalytics/MetricsSummarizerRecorder.cpp
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2017 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.
+ */
+
+#define LOG_TAG "MetricsSummarizerRecorder"
+#include <utils/Log.h>
+
+#include <stdint.h>
+#include <inttypes.h>
+
+#include <utils/threads.h>
+#include <utils/Errors.h>
+#include <utils/KeyedVector.h>
+#include <utils/String8.h>
+#include <utils/List.h>
+
+#include <media/IMediaAnalyticsService.h>
+
+#include "MetricsSummarizer.h"
+#include "MetricsSummarizerRecorder.h"
+
+
+
+
+namespace android {
+
+MetricsSummarizerRecorder::MetricsSummarizerRecorder(const char *key)
+    : MetricsSummarizer(key)
+{
+    ALOGV("MetricsSummarizerRecorder::MetricsSummarizerRecorder");
+}
+
+} // namespace android
diff --git a/services/mediaanalytics/MetricsSummarizerRecorder.h b/services/mediaanalytics/MetricsSummarizerRecorder.h
new file mode 100644
index 0000000..963baab
--- /dev/null
+++ b/services/mediaanalytics/MetricsSummarizerRecorder.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2017 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_METRICSSUMMARIZERRECORDER_H
+#define ANDROID_METRICSSUMMARIZERRECORDER_H
+
+#include <utils/threads.h>
+#include <utils/Errors.h>
+#include <utils/KeyedVector.h>
+#include <utils/String8.h>
+#include <utils/List.h>
+
+#include <media/IMediaAnalyticsService.h>
+#include "MetricsSummarizer.h"
+
+
+namespace android {
+
+class MetricsSummarizerRecorder : public MetricsSummarizer
+{
+
+ public:
+
+    MetricsSummarizerRecorder(const char *key);
+    virtual ~MetricsSummarizerRecorder() {};
+
+};
+
+// ----------------------------------------------------------------------------
+
+}; // namespace android
+
+#endif // ANDROID_METRICSSUMMARIZERRECORDER_H