diff --git a/cas/1.0/default/CasImpl.cpp b/cas/1.0/default/CasImpl.cpp
new file mode 100644
index 0000000..9d1f4a3
--- /dev/null
+++ b/cas/1.0/default/CasImpl.cpp
@@ -0,0 +1,205 @@
+/*
+ * 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_NDEBUG 0
+#define LOG_TAG "android.hardware.cas@1.0-CasImpl"
+
+#include <android/hardware/cas/1.0/ICasListener.h>
+#include <media/cas/CasAPI.h>
+#include <utils/Log.h>
+
+#include "CasImpl.h"
+#include "SharedLibrary.h"
+#include "TypeConvert.h"
+
+namespace android {
+namespace hardware {
+namespace cas {
+namespace V1_0 {
+namespace implementation {
+
+struct CasImpl::PluginHolder : public RefBase {
+public:
+    explicit PluginHolder(CasPlugin *plugin) : mPlugin(plugin) {}
+    ~PluginHolder() { if (mPlugin != NULL) delete mPlugin; }
+    CasPlugin* get() { return mPlugin; }
+
+private:
+    CasPlugin *mPlugin;
+    DISALLOW_EVIL_CONSTRUCTORS(PluginHolder);
+};
+
+CasImpl::CasImpl(const sp<ICasListener> &listener)
+    : mPluginHolder(NULL), mListener(listener) {
+    ALOGV("CTOR");
+}
+
+CasImpl::~CasImpl() {
+    ALOGV("DTOR");
+    release();
+}
+
+//static
+void CasImpl::OnEvent(
+        void *appData,
+        int32_t event,
+        int32_t arg,
+        uint8_t *data,
+        size_t size) {
+    if (appData == NULL) {
+        ALOGE("Invalid appData!");
+        return;
+    }
+    CasImpl *casImpl = static_cast<CasImpl *>(appData);
+    casImpl->onEvent(event, arg, data, size);
+}
+
+void CasImpl::init(const sp<SharedLibrary>& library, CasPlugin *plugin) {
+    mLibrary = library;
+    mPluginHolder = new PluginHolder(plugin);
+}
+
+void CasImpl::onEvent(
+        int32_t event, int32_t arg, uint8_t *data, size_t size) {
+    if (mListener == NULL) {
+        return;
+    }
+
+    HidlCasData eventData;
+    if (data != NULL) {
+        eventData.setToExternal(data, size);
+    }
+
+    mListener->onEvent(event, arg, eventData);
+}
+
+Return<Status> CasImpl::setPrivateData(const HidlCasData& pvtData) {
+    ALOGV("%s", __FUNCTION__);
+    sp<PluginHolder> holder = mPluginHolder;
+    if (holder == NULL) {
+        return toStatus(INVALID_OPERATION);
+    }
+    return toStatus(holder->get()->setPrivateData(pvtData));
+}
+
+Return<void> CasImpl::openSession(openSession_cb _hidl_cb) {
+    ALOGV("%s", __FUNCTION__);
+    CasSessionId sessionId;
+
+    sp<PluginHolder> holder = mPluginHolder;
+    status_t err = INVALID_OPERATION;
+    if (holder != NULL) {
+        err = holder->get()->openSession(&sessionId);
+    }
+
+    _hidl_cb(toStatus(err), sessionId);
+
+    return Void();
+}
+
+Return<Status> CasImpl::setSessionPrivateData(
+        const HidlCasSessionId &sessionId, const HidlCasData& pvtData) {
+    ALOGV("%s: sessionId=%s", __FUNCTION__,
+            sessionIdToString(sessionId).string());
+    sp<PluginHolder> holder = mPluginHolder;
+    if (holder == NULL) {
+        return toStatus(INVALID_OPERATION);
+    }
+    return toStatus(
+            holder->get()->setSessionPrivateData(
+                    sessionId, pvtData));
+}
+
+Return<Status> CasImpl::closeSession(const HidlCasSessionId &sessionId) {
+    ALOGV("%s: sessionId=%s", __FUNCTION__,
+            sessionIdToString(sessionId).string());
+    sp<PluginHolder> holder = mPluginHolder;
+    if (holder == NULL) {
+        return toStatus(INVALID_OPERATION);
+    }
+    return toStatus(holder->get()->closeSession(sessionId));
+}
+
+Return<Status> CasImpl::processEcm(
+        const HidlCasSessionId &sessionId, const HidlCasData& ecm) {
+    ALOGV("%s: sessionId=%s", __FUNCTION__,
+            sessionIdToString(sessionId).string());
+    sp<PluginHolder> holder = mPluginHolder;
+    if (holder == NULL) {
+        return toStatus(INVALID_OPERATION);
+    }
+
+    return toStatus(holder->get()->processEcm(sessionId, ecm));
+}
+
+Return<Status> CasImpl::processEmm(const HidlCasData& emm) {
+    ALOGV("%s", __FUNCTION__);
+    sp<PluginHolder> holder = mPluginHolder;
+    if (holder == NULL) {
+        return toStatus(INVALID_OPERATION);
+    }
+
+    return toStatus(holder->get()->processEmm(emm));
+}
+
+Return<Status> CasImpl::sendEvent(
+        int32_t event, int32_t arg,
+        const HidlCasData& eventData) {
+    ALOGV("%s", __FUNCTION__);
+    sp<PluginHolder> holder = mPluginHolder;
+    if (holder == NULL) {
+        return toStatus(INVALID_OPERATION);
+    }
+
+    status_t err = holder->get()->sendEvent(event, arg, eventData);
+    return toStatus(err);
+}
+
+Return<Status> CasImpl::provision(const hidl_string& provisionString) {
+    ALOGV("%s: provisionString=%s", __FUNCTION__, provisionString.c_str());
+    sp<PluginHolder> holder = mPluginHolder;
+    if (holder == NULL) {
+        return toStatus(INVALID_OPERATION);
+    }
+
+    return toStatus(holder->get()->provision(String8(provisionString.c_str())));
+}
+
+Return<Status> CasImpl::refreshEntitlements(
+        int32_t refreshType,
+        const HidlCasData& refreshData) {
+    ALOGV("%s", __FUNCTION__);
+    sp<PluginHolder> holder = mPluginHolder;
+    if (holder == NULL) {
+        return toStatus(INVALID_OPERATION);
+    }
+
+    status_t err = holder->get()->refreshEntitlements(refreshType, refreshData);
+    return toStatus(err);
+}
+
+Return<Status> CasImpl::release() {
+    ALOGV("%s: plugin=%p", __FUNCTION__,
+            mPluginHolder != NULL ? mPluginHolder->get() : NULL);
+    mPluginHolder.clear();
+    return Status::OK;
+}
+
+} // namespace implementation
+} // namespace V1_0
+} // namespace cas
+} // namespace hardware
+} // namespace android