diff --git a/contexthub/1.0/default/Contexthub.h b/contexthub/1.0/default/Contexthub.h
new file mode 100644
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+++ b/contexthub/1.0/default/Contexthub.h
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+/*
+ * 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.
+ */
+
+#ifndef ANDROID_HARDWARE_CONTEXTHUB_V1_0_CONTEXTHUB_H_
+#define ANDROID_HARDWARE_CONTEXTHUB_V1_0_CONTEXTHUB_H_
+
+#include <unordered_map>
+
+#include <android/hardware/contexthub/1.0/IContexthub.h>
+#include <hardware/context_hub.h>
+
+namespace android {
+namespace hardware {
+namespace contexthub {
+namespace V1_0 {
+namespace implementation {
+
+struct Contexthub : public ::android::hardware::contexthub::V1_0::IContexthub {
+    Contexthub();
+
+    Return<void> getHubs(getHubs_cb _hidl_cb) override;
+
+    Return<Result> registerCallback(uint32_t hubId,
+                                    const sp<IContexthubCallback> &cb) override;
+
+    Return<Result> sendMessageToHub(uint32_t hubId,
+                                    const ContextHubMsg &msg) override;
+
+    Return<Result> loadNanoApp(uint32_t hubId,
+                               const ::android::hardware::hidl_vec<uint8_t>& appBinary,
+                               uint32_t transactionId) override;
+
+    Return<Result> unloadNanoApp(uint32_t hubId,
+                                 uint64_t appId,
+                                 uint32_t transactionId) override;
+
+    Return<Result> enableNanoApp(uint32_t hubId,
+                                 uint64_t appId,
+                                 uint32_t transactionId) override;
+
+    Return<Result> disableNanoApp(uint32_t hubId,
+                                  uint64_t appId,
+                                  uint32_t transactionId) override;
+
+    Return<Result> queryApps(uint32_t hubId) override;
+
+    Return<Result> reboot(uint32_t hubId);
+
+    bool isInitialized();
+
+private:
+
+    struct CachedHubInformation{
+        struct hub_app_name_t osAppName;
+        sp<IContexthubCallback> callBack;
+    };
+
+    status_t mInitCheck;
+    const struct context_hub_module_t *mContextHubModule;
+    std::unordered_map<uint32_t, CachedHubInformation> mCachedHubInfo;
+
+    sp<IContexthubCallback> mCb;
+    bool mIsTransactionPending;
+    uint32_t mTransactionId;
+
+    bool isValidHubId(uint32_t hubId);
+
+    sp<IContexthubCallback> getCallBackForHubId(uint32_t hubId);
+
+    int handleOsMessage(sp<IContexthubCallback> cb,
+                        uint32_t msgType,
+                        const uint8_t *msg,
+                        int msgLen);
+
+    static int contextHubCb(uint32_t hubId,
+                            const struct hub_message_t *rxMsg,
+                            void *cookie);
+
+    bool setOsAppAsDestination(hub_message_t *msg, int hubId);
+
+    DISALLOW_COPY_AND_ASSIGN(Contexthub);
+};
+
+extern "C" IContexthub *HIDL_FETCH_IContexthub(const char *name);
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace contexthub
+}  // namespace hardware
+}  // namespace android
+
+#endif  // ANDROID_HARDWARE_CONTEXTHUB_V1_0_CONTEXTHUB_H_