diff --git a/services/tuner/TunerFrontend.cpp b/services/tuner/TunerFrontend.cpp
new file mode 100644
index 0000000..ba4553b
--- /dev/null
+++ b/services/tuner/TunerFrontend.cpp
@@ -0,0 +1,463 @@
+/**
+ * Copyright 2020, 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 "TunerFrontend"
+
+#include "TunerFrontend.h"
+#include "TunerService.h"
+
+using ::aidl::android::media::tv::tuner::TunerAtsc3PlpInfo;
+using ::aidl::android::media::tv::tuner::TunerFrontendAtsc3PlpSettings;
+using ::android::hardware::tv::tuner::V1_0::FrontendAnalogSifStandard;
+using ::android::hardware::tv::tuner::V1_0::FrontendAnalogType;
+using ::android::hardware::tv::tuner::V1_0::FrontendAtscModulation;
+using ::android::hardware::tv::tuner::V1_0::FrontendAtsc3Bandwidth;
+using ::android::hardware::tv::tuner::V1_0::FrontendAtsc3CodeRate;
+using ::android::hardware::tv::tuner::V1_0::FrontendAtsc3DemodOutputFormat;
+using ::android::hardware::tv::tuner::V1_0::FrontendAtsc3Fec;
+using ::android::hardware::tv::tuner::V1_0::FrontendAtsc3Modulation;
+using ::android::hardware::tv::tuner::V1_0::FrontendAtsc3TimeInterleaveMode;
+using ::android::hardware::tv::tuner::V1_0::FrontendDvbcAnnex;
+using ::android::hardware::tv::tuner::V1_0::FrontendDvbcModulation;
+using ::android::hardware::tv::tuner::V1_0::FrontendDvbcOuterFec;
+using ::android::hardware::tv::tuner::V1_0::FrontendDvbcSpectralInversion;
+using ::android::hardware::tv::tuner::V1_0::FrontendDvbsModulation;
+using ::android::hardware::tv::tuner::V1_0::FrontendDvbsPilot;
+using ::android::hardware::tv::tuner::V1_0::FrontendDvbsRolloff;
+using ::android::hardware::tv::tuner::V1_0::FrontendDvbsSettings;
+using ::android::hardware::tv::tuner::V1_0::FrontendDvbsStandard;
+using ::android::hardware::tv::tuner::V1_0::FrontendDvbsVcmMode;
+using ::android::hardware::tv::tuner::V1_0::FrontendDvbtBandwidth;
+using ::android::hardware::tv::tuner::V1_0::FrontendDvbtCoderate;
+using ::android::hardware::tv::tuner::V1_0::FrontendDvbtConstellation;
+using ::android::hardware::tv::tuner::V1_0::FrontendDvbtGuardInterval;
+using ::android::hardware::tv::tuner::V1_0::FrontendDvbtHierarchy;
+using ::android::hardware::tv::tuner::V1_0::FrontendDvbtPlpMode;
+using ::android::hardware::tv::tuner::V1_0::FrontendDvbtSettings;
+using ::android::hardware::tv::tuner::V1_0::FrontendDvbtStandard;
+using ::android::hardware::tv::tuner::V1_0::FrontendDvbtTransmissionMode;
+using ::android::hardware::tv::tuner::V1_0::FrontendInnerFec;
+using ::android::hardware::tv::tuner::V1_0::FrontendIsdbs3Coderate;
+using ::android::hardware::tv::tuner::V1_0::FrontendIsdbs3Modulation;
+using ::android::hardware::tv::tuner::V1_0::FrontendIsdbs3Rolloff;
+using ::android::hardware::tv::tuner::V1_0::FrontendIsdbs3Settings;
+using ::android::hardware::tv::tuner::V1_0::FrontendIsdbsCoderate;
+using ::android::hardware::tv::tuner::V1_0::FrontendIsdbsModulation;
+using ::android::hardware::tv::tuner::V1_0::FrontendIsdbsRolloff;
+using ::android::hardware::tv::tuner::V1_0::FrontendIsdbsSettings;
+using ::android::hardware::tv::tuner::V1_0::FrontendIsdbsStreamIdType;
+using ::android::hardware::tv::tuner::V1_0::FrontendIsdbtBandwidth;
+using ::android::hardware::tv::tuner::V1_0::FrontendIsdbtCoderate;
+using ::android::hardware::tv::tuner::V1_0::FrontendIsdbtGuardInterval;
+using ::android::hardware::tv::tuner::V1_0::FrontendIsdbtMode;
+using ::android::hardware::tv::tuner::V1_0::FrontendIsdbtModulation;
+using ::android::hardware::tv::tuner::V1_0::FrontendIsdbtSettings;
+using ::android::hardware::tv::tuner::V1_0::FrontendScanAtsc3PlpInfo;
+using ::android::hardware::tv::tuner::V1_0::FrontendScanType;
+using ::android::hardware::tv::tuner::V1_0::FrontendSettings;;
+using ::android::hardware::tv::tuner::V1_0::Result;
+
+namespace android {
+
+TunerFrontend::TunerFrontend(sp<ITuner> tuner, int frontendHandle) {
+    mTuner = tuner;
+    mId = TunerService::getResourceIdFromHandle(frontendHandle);
+
+    if (mTuner != NULL) {
+        Result status;
+        mTuner->openFrontendById(mId, [&](Result result, const sp<IFrontend>& frontend) {
+            mFrontend = frontend;
+            status = result;
+        });
+        if (status != Result::SUCCESS) {
+            mFrontend = NULL;
+        }
+    }
+}
+
+TunerFrontend::~TunerFrontend() {}
+
+Status TunerFrontend::setCallback(
+        const std::shared_ptr<ITunerFrontendCallback>& tunerFrontendCallback) {
+    if (mFrontend == NULL) {
+        ALOGE("IFrontend is not initialized");
+        return Status::fromServiceSpecificError(static_cast<int32_t>(Result::UNAVAILABLE));
+    }
+
+    if (tunerFrontendCallback == NULL) {
+        return Status::fromServiceSpecificError(static_cast<int32_t>(Result::INVALID_ARGUMENT));
+    }
+
+    sp<IFrontendCallback> frontendCallback = new FrontendCallback(tunerFrontendCallback);
+    Result status = mFrontend->setCallback(frontendCallback);
+    if (status == Result::SUCCESS) {
+        return Status::ok();
+    }
+
+    return Status::fromServiceSpecificError(static_cast<int32_t>(status));
+}
+
+Status TunerFrontend::tune(const TunerFrontendSettings& /*settings*/) {
+    return Status::ok();
+}
+
+Status TunerFrontend::stopTune() {
+    return Status::ok();
+}
+
+Status TunerFrontend::scan(const TunerFrontendSettings& settings, int frontendScanType) {
+    if (mFrontend == NULL) {
+        ALOGD("IFrontend is not initialized");
+        return Status::fromServiceSpecificError(static_cast<int32_t>(Result::UNAVAILABLE));
+    }
+
+    FrontendSettings frontendSettings;
+    switch (settings.getTag()) {
+        case TunerFrontendSettings::analog:
+            frontendSettings.analog({
+                .frequency = static_cast<uint32_t>(
+                        settings.get<TunerFrontendSettings::analog>().frequency),
+                .type = static_cast<FrontendAnalogType>(
+                        settings.get<TunerFrontendSettings::analog>().signalType),
+                .sifStandard = static_cast<FrontendAnalogSifStandard>(
+                        settings.get<TunerFrontendSettings::analog>().sifStandard),
+            });
+            break;
+        case TunerFrontendSettings::atsc:
+            frontendSettings.atsc({
+                .frequency = static_cast<uint32_t>(
+                        settings.get<TunerFrontendSettings::atsc>().frequency),
+                .modulation = static_cast<FrontendAtscModulation>(
+                        settings.get<TunerFrontendSettings::atsc>().modulation),
+            });
+            break;
+        case TunerFrontendSettings::atsc3:
+            frontendSettings.atsc3({
+                .frequency = static_cast<uint32_t>(
+                        settings.get<TunerFrontendSettings::atsc3>().frequency),
+                .bandwidth = static_cast<FrontendAtsc3Bandwidth>(
+                        settings.get<TunerFrontendSettings::atsc3>().bandwidth),
+                .demodOutputFormat = static_cast<FrontendAtsc3DemodOutputFormat>(
+                        settings.get<TunerFrontendSettings::atsc3>().demodOutputFormat),
+                .plpSettings = getAtsc3PlpSettings(settings.get<TunerFrontendSettings::atsc3>()),
+            });
+            break;
+        case TunerFrontendSettings::cable:
+            frontendSettings.dvbc({
+                .frequency = static_cast<uint32_t>(
+                        settings.get<TunerFrontendSettings::cable>().frequency),
+                .modulation = static_cast<FrontendDvbcModulation>(
+                        settings.get<TunerFrontendSettings::cable>().modulation),
+                .fec = static_cast<FrontendInnerFec>(
+                        settings.get<TunerFrontendSettings::cable>().innerFec),
+                .symbolRate = static_cast<uint32_t>(
+                        settings.get<TunerFrontendSettings::cable>().symbolRate),
+                .outerFec = static_cast<FrontendDvbcOuterFec>(
+                        settings.get<TunerFrontendSettings::cable>().outerFec),
+                .annex = static_cast<FrontendDvbcAnnex>(
+                        settings.get<TunerFrontendSettings::cable>().annex),
+                .spectralInversion = static_cast<FrontendDvbcSpectralInversion>(
+                        settings.get<TunerFrontendSettings::cable>().spectralInversion),
+            });
+            break;
+        case TunerFrontendSettings::dvbs:
+            frontendSettings.dvbs({
+                .frequency = static_cast<uint32_t>(
+                        settings.get<TunerFrontendSettings::dvbs>().frequency),
+                .modulation = static_cast<FrontendDvbsModulation>(
+                        settings.get<TunerFrontendSettings::dvbs>().modulation),
+                .coderate = getDvbsCodeRate(
+                        settings.get<TunerFrontendSettings::dvbs>().codeRate),
+                .symbolRate = static_cast<uint32_t>(
+                        settings.get<TunerFrontendSettings::dvbs>().symbolRate),
+                .rolloff = static_cast<FrontendDvbsRolloff>(
+                        settings.get<TunerFrontendSettings::dvbs>().rolloff),
+                .pilot = static_cast<FrontendDvbsPilot>(
+                        settings.get<TunerFrontendSettings::dvbs>().pilot),
+                .inputStreamId = static_cast<uint32_t>(
+                        settings.get<TunerFrontendSettings::dvbs>().inputStreamId),
+                .standard = static_cast<FrontendDvbsStandard>(
+                        settings.get<TunerFrontendSettings::dvbs>().standard),
+                .vcmMode = static_cast<FrontendDvbsVcmMode>(
+                        settings.get<TunerFrontendSettings::dvbs>().vcm),
+            });
+            break;
+        case TunerFrontendSettings::dvbt:
+            frontendSettings.dvbt({
+                .frequency = static_cast<uint32_t>(
+                        settings.get<TunerFrontendSettings::dvbt>().frequency),
+                .transmissionMode = static_cast<FrontendDvbtTransmissionMode>(
+                        settings.get<TunerFrontendSettings::dvbt>().transmissionMode),
+                .bandwidth = static_cast<FrontendDvbtBandwidth>(
+                        settings.get<TunerFrontendSettings::dvbt>().bandwidth),
+                .constellation = static_cast<FrontendDvbtConstellation>(
+                        settings.get<TunerFrontendSettings::dvbt>().constellation),
+                .hierarchy = static_cast<FrontendDvbtHierarchy>(
+                        settings.get<TunerFrontendSettings::dvbt>().hierarchy),
+                .hpCoderate = static_cast<FrontendDvbtCoderate>(
+                        settings.get<TunerFrontendSettings::dvbt>().hpCodeRate),
+                .lpCoderate = static_cast<FrontendDvbtCoderate>(
+                        settings.get<TunerFrontendSettings::dvbt>().lpCodeRate),
+                .guardInterval = static_cast<FrontendDvbtGuardInterval>(
+                        settings.get<TunerFrontendSettings::dvbt>().guardInterval),
+                .isHighPriority = settings.get<TunerFrontendSettings::dvbt>().isHighPriority,
+                .standard = static_cast<FrontendDvbtStandard>(
+                        settings.get<TunerFrontendSettings::dvbt>().standard),
+                .isMiso = settings.get<TunerFrontendSettings::dvbt>().isMiso,
+                .plpMode = static_cast<FrontendDvbtPlpMode>(
+                        settings.get<TunerFrontendSettings::dvbt>().plpMode),
+                .plpId = static_cast<uint8_t>(
+                        settings.get<TunerFrontendSettings::dvbt>().plpId),
+                .plpGroupId = static_cast<uint8_t>(
+                        settings.get<TunerFrontendSettings::dvbt>().plpGroupId),
+            });
+            break;
+        case TunerFrontendSettings::isdbs:
+            frontendSettings.isdbs({
+                .frequency = static_cast<uint32_t>(
+                        settings.get<TunerFrontendSettings::isdbs>().frequency),
+                .streamId = static_cast<uint16_t>(
+                        settings.get<TunerFrontendSettings::isdbs>().streamId),
+                .streamIdType = static_cast<FrontendIsdbsStreamIdType>(
+                        settings.get<TunerFrontendSettings::isdbs>().streamIdType),
+                .modulation = static_cast<FrontendIsdbsModulation>(
+                        settings.get<TunerFrontendSettings::isdbs>().modulation),
+                .coderate = static_cast<FrontendIsdbsCoderate>(
+                        settings.get<TunerFrontendSettings::isdbs>().codeRate),
+                .symbolRate = static_cast<uint32_t>(
+                        settings.get<TunerFrontendSettings::isdbs>().symbolRate),
+                .rolloff = static_cast<FrontendIsdbsRolloff>(
+                        settings.get<TunerFrontendSettings::isdbs>().rolloff),
+            });
+            break;
+        case TunerFrontendSettings::isdbs3:
+            frontendSettings.isdbs3({
+                .frequency = static_cast<uint32_t>(
+                        settings.get<TunerFrontendSettings::isdbs3>().frequency),
+                .streamId = static_cast<uint16_t>(
+                        settings.get<TunerFrontendSettings::isdbs3>().streamId),
+                .streamIdType = static_cast<FrontendIsdbsStreamIdType>(
+                        settings.get<TunerFrontendSettings::isdbs3>().streamIdType),
+                .modulation = static_cast<FrontendIsdbs3Modulation>(
+                        settings.get<TunerFrontendSettings::isdbs3>().modulation),
+                .coderate = static_cast<FrontendIsdbs3Coderate>(
+                        settings.get<TunerFrontendSettings::isdbs3>().codeRate),
+                .symbolRate = static_cast<uint32_t>(
+                        settings.get<TunerFrontendSettings::isdbs3>().symbolRate),
+                .rolloff = static_cast<FrontendIsdbs3Rolloff>(
+                        settings.get<TunerFrontendSettings::isdbs3>().rolloff),
+            });
+            break;
+        case TunerFrontendSettings::isdbt:
+            frontendSettings.isdbt({
+                .frequency = static_cast<uint32_t>(
+                        settings.get<TunerFrontendSettings::isdbt>().frequency),
+                .modulation = static_cast<FrontendIsdbtModulation>(
+                        settings.get<TunerFrontendSettings::isdbt>().modulation),
+                .bandwidth = static_cast<FrontendIsdbtBandwidth>(
+                        settings.get<TunerFrontendSettings::isdbt>().bandwidth),
+                .mode = static_cast<FrontendIsdbtMode>(
+                        settings.get<TunerFrontendSettings::isdbt>().mode),
+                .coderate = static_cast<FrontendIsdbtCoderate>(
+                        settings.get<TunerFrontendSettings::isdbt>().codeRate),
+                .guardInterval = static_cast<FrontendIsdbtGuardInterval>(
+                        settings.get<TunerFrontendSettings::isdbt>().guardInterval),
+                .serviceAreaId = static_cast<uint32_t>(
+                        settings.get<TunerFrontendSettings::isdbt>().serviceAreaId),
+            });
+            break;
+        default:
+            break;
+    }
+    Result status = mFrontend->scan(
+            frontendSettings, static_cast<FrontendScanType>(frontendScanType));
+    if (status == Result::SUCCESS) {
+        return Status::ok();
+    }
+
+    return Status::fromServiceSpecificError(static_cast<int32_t>(status));
+}
+
+Status TunerFrontend::stopScan() {
+    return Status::ok();
+}
+
+Status TunerFrontend::setLnb(int /*lnbHandle*/) {
+    return Status::ok();
+}
+
+Status TunerFrontend::setLna(bool /*bEnable*/) {
+    return Status::ok();
+}
+
+Status TunerFrontend::close() {
+    return Status::ok();
+}
+
+Status TunerFrontend::getStatus(const std::vector<int32_t>& /*statusTypes*/,
+		std::vector<TunerFrontendStatus>* /*_aidl_return*/) {
+    return Status::ok();
+}
+
+/////////////// FrontendCallback ///////////////////////
+
+Return<void> TunerFrontend::FrontendCallback::onEvent(FrontendEventType frontendEventType) {
+    ALOGD("FrontendCallback::onEvent, type=%d", frontendEventType);
+    mTunerFrontendCallback->onEvent((int)frontendEventType);
+    return Void();
+}
+
+Return<void> TunerFrontend::FrontendCallback::onScanMessage(
+        FrontendScanMessageType type, const FrontendScanMessage& message) {
+    ALOGD("FrontendCallback::onScanMessage, type=%d", type);
+    switch(type) {
+        case FrontendScanMessageType::LOCKED: {
+            if (message.isLocked()) {
+                mTunerFrontendCallback->onLocked();
+            }
+            break;
+        }
+        case FrontendScanMessageType::END: {
+            if (message.isEnd()) {
+                mTunerFrontendCallback->onScanStopped();
+            }
+            break;
+        }
+        case FrontendScanMessageType::PROGRESS_PERCENT: {
+            mTunerFrontendCallback->onProgress((int)message.progressPercent());
+            break;
+        }
+        case FrontendScanMessageType::FREQUENCY: {
+            auto f = message.frequencies();
+            std::vector<int32_t> frequencies(std::begin(f), std::end(f));
+            mTunerFrontendCallback->onFrequenciesReport(frequencies);
+            break;
+        }
+        case FrontendScanMessageType::SYMBOL_RATE: {
+            auto s = message.symbolRates();
+            std::vector<int32_t> symbolRates(std::begin(s), std::end(s));
+            mTunerFrontendCallback->onSymbolRates(symbolRates);
+            break;
+        }
+        case FrontendScanMessageType::HIERARCHY: {
+            mTunerFrontendCallback->onHierarchy((int)message.hierarchy());
+            break;
+        }
+        case FrontendScanMessageType::ANALOG_TYPE: {
+            mTunerFrontendCallback->onSignalType((int)message.analogType());
+            break;
+        }
+        case FrontendScanMessageType::PLP_IDS: {
+            auto p = message.plpIds();
+            std::vector<int32_t> plpIds(std::begin(p), std::end(p));
+            mTunerFrontendCallback->onPlpIds(plpIds);
+            break;
+        }
+        case FrontendScanMessageType::GROUP_IDS: {
+            auto g = message.groupIds();
+            std::vector<int32_t> groupIds(std::begin(g), std::end(g));
+            mTunerFrontendCallback->onGroupIds(groupIds);
+            break;
+        }
+        case FrontendScanMessageType::INPUT_STREAM_IDS: {
+            auto i = message.inputStreamIds();
+            std::vector<int32_t> streamIds(std::begin(i), std::end(i));
+            mTunerFrontendCallback->onInputStreamIds(streamIds);
+            break;
+        }
+        case FrontendScanMessageType::STANDARD: {
+            FrontendScanMessage::Standard std = message.std();
+            int standard;
+            if (std.getDiscriminator() == FrontendScanMessage::Standard::hidl_discriminator::sStd) {
+                standard = (int) std.sStd();
+                mTunerFrontendCallback->onDvbsStandard(standard);
+            } else if (std.getDiscriminator() ==
+                    FrontendScanMessage::Standard::hidl_discriminator::tStd) {
+                standard = (int) std.tStd();
+                mTunerFrontendCallback->onDvbsStandard(standard);
+            } else if (std.getDiscriminator() ==
+                    FrontendScanMessage::Standard::hidl_discriminator::sifStd) {
+                standard = (int) std.sifStd();
+                mTunerFrontendCallback->onAnalogSifStandard(standard);
+            }
+            break;
+        }
+        case FrontendScanMessageType::ATSC3_PLP_INFO: {
+            std::vector<FrontendScanAtsc3PlpInfo> plpInfos = message.atsc3PlpInfos();
+            std::vector<TunerAtsc3PlpInfo> tunerPlpInfos;
+            for (int i = 0; i < plpInfos.size(); i++) {
+                auto info = plpInfos[i];
+                int plpId = (int) info.plpId;
+                bool lls = (bool) info.bLlsFlag;
+                TunerAtsc3PlpInfo plpInfo{
+                    .plpId = plpId,
+                    .llsFlag = lls,
+                };
+                tunerPlpInfos.push_back(plpInfo);
+            }
+            mTunerFrontendCallback->onAtsc3PlpInfos(tunerPlpInfos);
+            break;
+        }
+        default:
+            break;
+    }
+    return Void();
+}
+
+////////////////////////////////////////////////////////////////////////////////
+
+hidl_vec<FrontendAtsc3PlpSettings> TunerFrontend::getAtsc3PlpSettings(
+        const TunerFrontendAtsc3Settings& settings) {
+    int len = settings.plpSettings.size();
+    hidl_vec<FrontendAtsc3PlpSettings> plps = hidl_vec<FrontendAtsc3PlpSettings>(len);
+    // parse PLP settings
+    for (int i = 0; i < len; i++) {
+        uint8_t plpId = static_cast<uint8_t>(settings.plpSettings[i].plpId);
+        FrontendAtsc3Modulation modulation =
+                static_cast<FrontendAtsc3Modulation>(settings.plpSettings[i].modulation);
+        FrontendAtsc3TimeInterleaveMode interleaveMode =
+                static_cast<FrontendAtsc3TimeInterleaveMode>(
+                        settings.plpSettings[i].interleaveMode);
+        FrontendAtsc3CodeRate codeRate =
+                static_cast<FrontendAtsc3CodeRate>(settings.plpSettings[i].codeRate);
+        FrontendAtsc3Fec fec =
+                static_cast<FrontendAtsc3Fec>(settings.plpSettings[i].fec);
+        FrontendAtsc3PlpSettings frontendAtsc3PlpSettings {
+                .plpId = plpId,
+                .modulation = modulation,
+                .interleaveMode = interleaveMode,
+                .codeRate = codeRate,
+                .fec = fec,
+        };
+        plps[i] = frontendAtsc3PlpSettings;
+    }
+    return plps;
+}
+
+FrontendDvbsCodeRate TunerFrontend::getDvbsCodeRate(const TunerFrontendDvbsCodeRate& codeRate) {
+    FrontendInnerFec innerFec = static_cast<FrontendInnerFec>(codeRate.fec);
+    bool isLinear = codeRate.isLinear;
+    bool isShortFrames = codeRate.isShortFrames;
+    uint32_t bitsPer1000Symbol = static_cast<uint32_t>(codeRate.bitsPer1000Symbol);
+    FrontendDvbsCodeRate coderate {
+            .fec = innerFec,
+            .isLinear = isLinear,
+            .isShortFrames = isShortFrames,
+            .bitsPer1000Symbol = bitsPer1000Symbol,
+    };
+    return coderate;
+}
+}  // namespace android