diff --git a/media/libmediametrics/IMediaMetricsService.cpp b/media/libmediametrics/IMediaMetricsService.cpp
new file mode 100644
index 0000000..b5675e6
--- /dev/null
+++ b/media/libmediametrics/IMediaMetricsService.cpp
@@ -0,0 +1,141 @@
+/*
+ * Copyright (C) 2016 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 "MediaMetrics"
+
+#include <stdint.h>
+#include <inttypes.h>
+#include <sys/types.h>
+
+#include <binder/Parcel.h>
+#include <binder/IMemory.h>
+#include <binder/IPCThreadState.h>
+
+#include <utils/Errors.h>  // for status_t
+#include <utils/List.h>
+#include <utils/Log.h>
+#include <utils/String8.h>
+
+#include <media/MediaMetricsItem.h>
+#include <media/IMediaMetricsService.h>
+
+namespace android {
+
+// TODO: Currently ONE_WAY transactions, make both ONE_WAY and synchronous options.
+
+enum {
+    SUBMIT_ITEM = IBinder::FIRST_CALL_TRANSACTION,
+    SUBMIT_BUFFER,
+};
+
+class BpMediaMetricsService: public BpInterface<IMediaMetricsService>
+{
+public:
+    explicit BpMediaMetricsService(const sp<IBinder>& impl)
+        : BpInterface<IMediaMetricsService>(impl)
+    {
+    }
+
+    status_t submit(mediametrics::Item *item) override
+    {
+        if (item == nullptr) {
+            return BAD_VALUE;
+        }
+        ALOGV("%s: (ONEWAY) item=%s", __func__, item->toString().c_str());
+
+        Parcel data;
+        data.writeInterfaceToken(IMediaMetricsService::getInterfaceDescriptor());
+
+        status_t status = item->writeToParcel(&data);
+        if (status != NO_ERROR) { // assume failure logged in item
+            return status;
+        }
+
+        status = remote()->transact(
+                SUBMIT_ITEM, data, nullptr /* reply */, IBinder::FLAG_ONEWAY);
+        ALOGW_IF(status != NO_ERROR, "%s: bad response from service for submit, status=%d",
+                __func__, status);
+        return status;
+    }
+
+    status_t submitBuffer(const char *buffer, size_t length) override
+    {
+        if (buffer == nullptr || length > INT32_MAX) {
+            return BAD_VALUE;
+        }
+        ALOGV("%s: (ONEWAY) length:%zu", __func__, length);
+
+        Parcel data;
+        data.writeInterfaceToken(IMediaMetricsService::getInterfaceDescriptor());
+
+        status_t status = data.writeInt32(length)
+                ?: data.write((uint8_t*)buffer, length);
+        if (status != NO_ERROR) {
+            return status;
+        }
+
+        status = remote()->transact(
+                SUBMIT_BUFFER, data, nullptr /* reply */, IBinder::FLAG_ONEWAY);
+        ALOGW_IF(status != NO_ERROR, "%s: bad response from service for submit, status=%d",
+                __func__, status);
+        return status;
+    }
+};
+
+IMPLEMENT_META_INTERFACE(MediaMetricsService, "android.media.IMediaMetricsService");
+
+// ----------------------------------------------------------------------
+
+status_t BnMediaMetricsService::onTransact(
+    uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
+{
+    switch (code) {
+    case SUBMIT_ITEM: {
+        CHECK_INTERFACE(IMediaMetricsService, data, reply);
+
+        mediametrics::Item * const item = mediametrics::Item::create();
+        status_t status = item->readFromParcel(data);
+        if (status != NO_ERROR) { // assume failure logged in item
+            return status;
+        }
+        status = submitInternal(item, true /* release */);
+        // assume failure logged by submitInternal
+        return NO_ERROR;
+    }
+    case SUBMIT_BUFFER: {
+        CHECK_INTERFACE(IMediaMetricsService, data, reply);
+        int32_t length;
+        status_t status = data.readInt32(&length);
+        if (status != NO_ERROR || length <= 0) {
+            return BAD_VALUE;
+        }
+        const void *ptr = data.readInplace(length);
+        if (ptr == nullptr) {
+            return BAD_VALUE;
+        }
+        status = submitBuffer(static_cast<const char *>(ptr), length);
+        // assume failure logged by submitBuffer
+        return NO_ERROR;
+    }
+
+    default:
+        return BBinder::onTransact(code, data, reply, flags);
+    }
+}
+
+// ----------------------------------------------------------------------------
+
+} // namespace android