diff --git a/services/tuner/TunerDescrambler.cpp b/services/tuner/TunerDescrambler.cpp
new file mode 100644
index 0000000..6b2889d
--- /dev/null
+++ b/services/tuner/TunerDescrambler.cpp
@@ -0,0 +1,120 @@
+/**
+ * Copyright 2021, 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 "TunerDescrambler"
+
+#include "TunerFilter.h"
+#include "TunerDemux.h"
+#include "TunerDescrambler.h"
+
+using ::android::hardware::tv::tuner::V1_0::Result;
+
+using namespace std;
+
+namespace android {
+
+TunerDescrambler::TunerDescrambler(sp<IDescrambler> descrambler) {
+    mDescrambler = descrambler;
+}
+
+TunerDescrambler::~TunerDescrambler() {
+    mDescrambler = nullptr;
+}
+
+Status TunerDescrambler::setDemuxSource(const std::shared_ptr<ITunerDemux>& demux) {
+    if (mDescrambler == nullptr) {
+        ALOGE("IDescrambler is not initialized");
+        return Status::fromServiceSpecificError(static_cast<int32_t>(Result::UNAVAILABLE));
+    }
+
+    Result res = mDescrambler->setDemuxSource(static_cast<TunerDemux*>(demux.get())->getId());
+    if (res != Result::SUCCESS) {
+        return ::ndk::ScopedAStatus::fromServiceSpecificError(static_cast<int32_t>(res));
+    }
+    return Status::ok();
+}
+
+Status TunerDescrambler::setKeyToken(const vector<uint8_t>& keyToken) {
+    if (mDescrambler == nullptr) {
+        ALOGE("IDescrambler is not initialized");
+        return Status::fromServiceSpecificError(static_cast<int32_t>(Result::UNAVAILABLE));
+    }
+
+    Result res = mDescrambler->setKeyToken(keyToken);
+    if (res != Result::SUCCESS) {
+        return ::ndk::ScopedAStatus::fromServiceSpecificError(static_cast<int32_t>(res));
+    }
+    return Status::ok();
+}
+
+Status TunerDescrambler::addPid(const TunerDemuxPid& pid,
+        const shared_ptr<ITunerFilter>& optionalSourceFilter) {
+    if (mDescrambler == nullptr) {
+        ALOGE("IDescrambler is not initialized");
+        return Status::fromServiceSpecificError(static_cast<int32_t>(Result::UNAVAILABLE));
+    }
+
+    Result res = mDescrambler->addPid(getHidlDemuxPid(pid),
+            static_cast<TunerFilter*>(optionalSourceFilter.get())->getHalFilter());
+    if (res != Result::SUCCESS) {
+        return ::ndk::ScopedAStatus::fromServiceSpecificError(static_cast<int32_t>(res));
+    }
+    return Status::ok();
+}
+
+Status TunerDescrambler::removePid(const TunerDemuxPid& pid,
+        const shared_ptr<ITunerFilter>& optionalSourceFilter) {
+    if (mDescrambler == nullptr) {
+        ALOGE("IDescrambler is not initialized");
+        return Status::fromServiceSpecificError(static_cast<int32_t>(Result::UNAVAILABLE));
+    }
+
+    Result res = mDescrambler->removePid(getHidlDemuxPid(pid),
+            static_cast<TunerFilter*>(optionalSourceFilter.get())->getHalFilter());
+    if (res != Result::SUCCESS) {
+        return ::ndk::ScopedAStatus::fromServiceSpecificError(static_cast<int32_t>(res));
+    }
+    return Status::ok();
+}
+
+Status TunerDescrambler::close() {
+    if (mDescrambler == nullptr) {
+        ALOGE("IDescrambler is not initialized.");
+        return Status::fromServiceSpecificError(static_cast<int32_t>(Result::UNAVAILABLE));
+    }
+
+    Result res = mDescrambler->close();
+    if (res != Result::SUCCESS) {
+        return Status::fromServiceSpecificError(static_cast<int32_t>(res));
+    }
+    return Status::ok();
+}
+
+DemuxPid TunerDescrambler::getHidlDemuxPid(const TunerDemuxPid& pid) {
+    DemuxPid hidlPid;
+    switch (pid.getTag()) {
+        case TunerDemuxPid::tPid: {
+            hidlPid.tPid((uint16_t)pid.tPid);
+            break;
+        }
+        case TunerDemuxPid::mmtpPid: {
+            hidlPid.mmtpPid((uint16_t)pid.mmtpPid);
+            break;
+        }
+    }
+    return hidlPid;
+}
+}  // namespace android