diff --git a/cas/aidl/default/CasImpl.cpp b/cas/aidl/default/CasImpl.cpp
new file mode 100755
index 0000000..2d31b35
--- /dev/null
+++ b/cas/aidl/default/CasImpl.cpp
@@ -0,0 +1,242 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ icensed 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 "android.hardware.cas-CasImpl"
+
+#include <media/cas/CasAPI.h>
+#include <utils/Log.h>
+
+#include "CasImpl.h"
+#include "TypeConvert.h"
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace cas {
+
+CasImpl::CasImpl(const shared_ptr<ICasListener>& listener) : 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);
+}
+
+// static
+void CasImpl::CallBackExt(void* appData, int32_t event, int32_t arg, uint8_t* data, size_t size,
+                          const CasSessionId* sessionId) {
+    if (appData == NULL) {
+        ALOGE("Invalid appData!");
+        return;
+    }
+    CasImpl* casImpl = static_cast<CasImpl*>(appData);
+    casImpl->onEvent(sessionId, event, arg, data, size);
+}
+
+// static
+void CasImpl::StatusUpdate(void* appData, int32_t event, int32_t arg) {
+    if (appData == NULL) {
+        ALOGE("Invalid appData!");
+        return;
+    }
+    CasImpl* casImpl = static_cast<CasImpl*>(appData);
+    casImpl->onStatusUpdate(event, arg);
+}
+
+void CasImpl::init(CasPlugin* plugin) {
+    shared_ptr<CasPlugin> holder(plugin);
+    atomic_store(&mPluginHolder, holder);
+}
+
+void CasImpl::onEvent(int32_t event, int32_t arg, uint8_t* data, size_t size) {
+    if (mListener == NULL) {
+        return;
+    }
+
+    vector<uint8_t> eventData;
+    if (data != NULL) {
+        eventData.assign(data, data + size);
+    }
+
+    mListener->onEvent(event, arg, eventData);
+}
+
+void CasImpl::onEvent(const CasSessionId* sessionId, int32_t event, int32_t arg, uint8_t* data,
+                      size_t size) {
+    if (mListener == NULL) {
+        return;
+    }
+
+    vector<uint8_t> eventData;
+    if (data != NULL) {
+        eventData.assign(data, data + size);
+    }
+
+    if (sessionId != NULL) {
+        mListener->onSessionEvent(*sessionId, event, arg, eventData);
+    } else {
+        mListener->onEvent(event, arg, eventData);
+    }
+}
+
+void CasImpl::onStatusUpdate(int32_t event, int32_t arg) {
+    if (mListener == NULL) {
+        return;
+    }
+    mListener->onStatusUpdate(static_cast<StatusEvent>(event), arg);
+}
+
+ScopedAStatus CasImpl::setPluginStatusUpdateCallback() {
+    ALOGV("%s", __FUNCTION__);
+    shared_ptr<CasPlugin> holder = atomic_load(&mPluginHolder);
+    if (holder.get() == nullptr) {
+        return toStatus(INVALID_OPERATION);
+    }
+    return toStatus(holder->setStatusCallback(&CasImpl::StatusUpdate));
+}
+
+ScopedAStatus CasImpl::setPrivateData(const vector<uint8_t>& pvtData) {
+    ALOGV("%s", __FUNCTION__);
+    shared_ptr<CasPlugin> holder = atomic_load(&mPluginHolder);
+    if (holder.get() == nullptr) {
+        return toStatus(INVALID_OPERATION);
+    }
+    return toStatus(holder->setPrivateData(pvtData));
+}
+
+ScopedAStatus CasImpl::openSession(SessionIntent intent, ScramblingMode mode,
+                                   vector<uint8_t>* sessionId) {
+    ALOGV("%s", __FUNCTION__);
+
+    shared_ptr<CasPlugin> holder = atomic_load(&mPluginHolder);
+    status_t err = INVALID_OPERATION;
+    if (holder.get() != nullptr) {
+        err = holder->openSession(static_cast<uint32_t>(intent), static_cast<uint32_t>(mode),
+                                  sessionId);
+        holder.reset();
+    }
+
+    return toStatus(err);
+}
+
+ScopedAStatus CasImpl::setSessionPrivateData(const vector<uint8_t>& sessionId,
+                                             const vector<uint8_t>& pvtData) {
+    ALOGV("%s: sessionId=%s", __FUNCTION__, sessionIdToString(sessionId).string());
+    shared_ptr<CasPlugin> holder = atomic_load(&mPluginHolder);
+    if (holder.get() == nullptr) {
+        return toStatus(INVALID_OPERATION);
+    }
+    return toStatus(holder->setSessionPrivateData(sessionId, pvtData));
+}
+
+ScopedAStatus CasImpl::closeSession(const vector<uint8_t>& sessionId) {
+    ALOGV("%s: sessionId=%s", __FUNCTION__, sessionIdToString(sessionId).string());
+    shared_ptr<CasPlugin> holder = atomic_load(&mPluginHolder);
+    if (holder.get() == nullptr) {
+        return toStatus(INVALID_OPERATION);
+    }
+    return toStatus(holder->closeSession(sessionId));
+}
+
+ScopedAStatus CasImpl::processEcm(const vector<uint8_t>& sessionId, const vector<uint8_t>& ecm) {
+    ALOGV("%s: sessionId=%s", __FUNCTION__, sessionIdToString(sessionId).string());
+    shared_ptr<CasPlugin> holder = atomic_load(&mPluginHolder);
+    if (holder.get() == nullptr) {
+        return toStatus(INVALID_OPERATION);
+    }
+
+    return toStatus(holder->processEcm(sessionId, ecm));
+}
+
+ScopedAStatus CasImpl::processEmm(const vector<uint8_t>& emm) {
+    ALOGV("%s", __FUNCTION__);
+    shared_ptr<CasPlugin> holder = atomic_load(&mPluginHolder);
+    if (holder.get() == nullptr) {
+        return toStatus(INVALID_OPERATION);
+    }
+
+    return toStatus(holder->processEmm(emm));
+}
+
+ScopedAStatus CasImpl::sendEvent(int32_t event, int32_t arg, const vector<uint8_t>& eventData) {
+    ALOGV("%s", __FUNCTION__);
+    shared_ptr<CasPlugin> holder = atomic_load(&mPluginHolder);
+    if (holder.get() == nullptr) {
+        return toStatus(INVALID_OPERATION);
+    }
+
+    status_t err = holder->sendEvent(event, arg, eventData);
+    return toStatus(err);
+}
+
+ScopedAStatus CasImpl::sendSessionEvent(const vector<uint8_t>& sessionId, int32_t event,
+                                        int32_t arg, const vector<uint8_t>& eventData) {
+    ALOGV("%s", __FUNCTION__);
+    shared_ptr<CasPlugin> holder = atomic_load(&mPluginHolder);
+    if (holder.get() == nullptr) {
+        return toStatus(INVALID_OPERATION);
+    }
+
+    status_t err = holder->sendSessionEvent(sessionId, event, arg, eventData);
+    return toStatus(err);
+}
+
+ScopedAStatus CasImpl::provision(const string& provisionString) {
+    ALOGV("%s: provisionString=%s", __FUNCTION__, provisionString.c_str());
+    shared_ptr<CasPlugin> holder = atomic_load(&mPluginHolder);
+    if (holder.get() == nullptr) {
+        return toStatus(INVALID_OPERATION);
+    }
+
+    return toStatus(holder->provision(String8(provisionString.c_str())));
+}
+
+ScopedAStatus CasImpl::refreshEntitlements(int32_t refreshType,
+                                           const vector<uint8_t>& refreshData) {
+    ALOGV("%s", __FUNCTION__);
+    shared_ptr<CasPlugin> holder = atomic_load(&mPluginHolder);
+    if (holder.get() == nullptr) {
+        return toStatus(INVALID_OPERATION);
+    }
+
+    status_t err = holder->refreshEntitlements(refreshType, refreshData);
+    return toStatus(err);
+}
+
+ScopedAStatus CasImpl::release() {
+    ALOGV("%s: plugin=%p", __FUNCTION__, mPluginHolder.get());
+
+    shared_ptr<CasPlugin> holder(nullptr);
+    atomic_store(&mPluginHolder, holder);
+
+    return ScopedAStatus::ok();
+}
+
+}  // namespace cas
+}  // namespace hardware
+}  // namespace android
+}  // namespace aidl