cec: copy hidl hal

* Copy from hardware/interfaces/tv/cec/1.0/default
  at b04e2f3df5ebbbeea46f555d0965357f05aa1457.

cec/Android.bp

@@ -0,0 +1,76 @@
+package {
+    default_team: "trendy_team_tv_os",
+    // See: http://go/android-license-faq
+    // A large-scale-change added 'default_applicable_licenses' to import
+    // all of the 'license_kinds' from "hardware_interfaces_license"
+    // to get the below license kinds:
+    //   SPDX-license-identifier-Apache-2.0
+    default_applicable_licenses: ["hardware_interfaces_license"],
+}
+
+cc_library_shared {
+    name: "android.hardware.tv.cec@1.0-impl",
+    defaults: ["hidl_defaults"],
+    vendor: true,
+    relative_install_path: "hw",
+    srcs: [
+        "HdmiCec.cpp",
+        "HdmiCecDefault.cpp",
+        "HdmiCecPort.cpp",
+    ],
+
+    shared_libs: [
+        "libhidlbase",
+        "liblog",
+        "libbase",
+        "libcutils",
+        "libutils",
+        "libhardware",
+        "android.hardware.tv.cec@1.0",
+    ],
+
+}
+
+cc_binary {
+    name: "android.hardware.tv.cec@1.0-service",
+    defaults: ["hidl_defaults"],
+    relative_install_path: "hw",
+    vendor: true,
+    init_rc: ["android.hardware.tv.cec@1.0-service.rc"],
+    srcs: ["service.cpp"],
+
+    shared_libs: [
+        "liblog",
+        "libcutils",
+        "libdl",
+        "libbase",
+        "libutils",
+        "libhardware_legacy",
+        "libhardware",
+        "libhidlbase",
+        "android.hardware.tv.cec@1.0",
+    ],
+
+}
+
+cc_binary {
+    name: "android.hardware.tv.cec@1.0-service.mock",
+    vintf_fragments: ["android.hardware.tv.cec@1.0-service.mock.xml"],
+    relative_install_path: "hw",
+    vendor: true,
+    init_rc: ["android.hardware.tv.cec@1.0-service.mock.rc"],
+    srcs: [
+        "serviceMock.cpp",
+        "HdmiCecMock.cpp",
+    ],
+
+    shared_libs: [
+        "liblog",
+        "libcutils",
+        "libbase",
+        "libutils",
+        "libhardware",
+        "libhidlbase",
+        "android.hardware.tv.cec@1.0",
+    ],
+}

cec/HdmiCec.cpp

@@ -0,0 +1,435 @@
+/*
+ * 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.
+ */
+
+#define LOG_TAG "android.hardware.tv.cec@1.0-impl"
+#include <android-base/logging.h>
+
+#include <hardware/hardware.h>
+#include <hardware/hdmi_cec.h>
+#include "HdmiCec.h"
+#include "HdmiCecDefault.h"
+
+namespace android {
+namespace hardware {
+namespace tv {
+namespace cec {
+namespace V1_0 {
+namespace implementation {
+
+static_assert(CEC_DEVICE_INACTIVE == static_cast<int>(CecDeviceType::INACTIVE),
+        "CecDeviceType::INACTIVE must match legacy value.");
+static_assert(CEC_DEVICE_TV == static_cast<int>(CecDeviceType::TV),
+        "CecDeviceType::TV must match legacy value.");
+static_assert(CEC_DEVICE_RECORDER == static_cast<int>(CecDeviceType::RECORDER),
+        "CecDeviceType::RECORDER must match legacy value.");
+static_assert(CEC_DEVICE_TUNER == static_cast<int>(CecDeviceType::TUNER),
+        "CecDeviceType::TUNER must match legacy value.");
+static_assert(CEC_DEVICE_PLAYBACK == static_cast<int>(CecDeviceType::PLAYBACK),
+        "CecDeviceType::PLAYBACK must match legacy value.");
+static_assert(CEC_DEVICE_AUDIO_SYSTEM == static_cast<int>(CecDeviceType::AUDIO_SYSTEM),
+        "CecDeviceType::AUDIO_SYSTEM must match legacy value.");
+static_assert(CEC_DEVICE_MAX == static_cast<int>(CecDeviceType::MAX),
+        "CecDeviceType::MAX must match legacy value.");
+
+static_assert(CEC_ADDR_TV == static_cast<int>(CecLogicalAddress::TV),
+        "CecLogicalAddress::TV must match legacy value.");
+static_assert(CEC_ADDR_RECORDER_1 == static_cast<int>(CecLogicalAddress::RECORDER_1),
+        "CecLogicalAddress::RECORDER_1 must match legacy value.");
+static_assert(CEC_ADDR_RECORDER_2 == static_cast<int>(CecLogicalAddress::RECORDER_2),
+        "CecLogicalAddress::RECORDER_2 must match legacy value.");
+static_assert(CEC_ADDR_TUNER_1 == static_cast<int>(CecLogicalAddress::TUNER_1),
+        "CecLogicalAddress::TUNER_1 must match legacy value.");
+static_assert(CEC_ADDR_PLAYBACK_1 == static_cast<int>(CecLogicalAddress::PLAYBACK_1),
+        "CecLogicalAddress::PLAYBACK_1 must match legacy value.");
+static_assert(CEC_ADDR_AUDIO_SYSTEM == static_cast<int>(CecLogicalAddress::AUDIO_SYSTEM),
+        "CecLogicalAddress::AUDIO_SYSTEM must match legacy value.");
+static_assert(CEC_ADDR_TUNER_2 == static_cast<int>(CecLogicalAddress::TUNER_2),
+        "CecLogicalAddress::TUNER_2 must match legacy value.");
+static_assert(CEC_ADDR_TUNER_3 == static_cast<int>(CecLogicalAddress::TUNER_3),
+        "CecLogicalAddress::TUNER_3 must match legacy value.");
+static_assert(CEC_ADDR_PLAYBACK_2 == static_cast<int>(CecLogicalAddress::PLAYBACK_2),
+        "CecLogicalAddress::PLAYBACK_2 must match legacy value.");
+static_assert(CEC_ADDR_RECORDER_3 == static_cast<int>(CecLogicalAddress::RECORDER_3),
+        "CecLogicalAddress::RECORDER_3 must match legacy value.");
+static_assert(CEC_ADDR_TUNER_4 == static_cast<int>(CecLogicalAddress::TUNER_4),
+        "CecLogicalAddress::TUNER_4 must match legacy value.");
+static_assert(CEC_ADDR_PLAYBACK_3 == static_cast<int>(CecLogicalAddress::PLAYBACK_3),
+        "CecLogicalAddress::PLAYBACK_3 must match legacy value.");
+static_assert(CEC_ADDR_FREE_USE == static_cast<int>(CecLogicalAddress::FREE_USE),
+        "CecLogicalAddress::FREE_USE must match legacy value.");
+static_assert(CEC_ADDR_UNREGISTERED == static_cast<int>(CecLogicalAddress::UNREGISTERED),
+        "CecLogicalAddress::UNREGISTERED must match legacy value.");
+static_assert(CEC_ADDR_BROADCAST == static_cast<int>(CecLogicalAddress::BROADCAST),
+        "CecLogicalAddress::BROADCAST must match legacy value.");
+
+static_assert(CEC_MESSAGE_FEATURE_ABORT == static_cast<int>(CecMessageType::FEATURE_ABORT),
+        "CecMessageType::FEATURE_ABORT must match legacy value.");
+static_assert(CEC_MESSAGE_IMAGE_VIEW_ON == static_cast<int>(CecMessageType::IMAGE_VIEW_ON),
+        "CecMessageType::IMAGE_VIEW_ON must match legacy value.");
+static_assert(CEC_MESSAGE_TUNER_STEP_INCREMENT == static_cast<int>(
+        CecMessageType::TUNER_STEP_INCREMENT),
+        "CecMessageType::TUNER_STEP_INCREMENT must match legacy value.");
+static_assert(CEC_MESSAGE_TUNER_STEP_DECREMENT == static_cast<int>(
+        CecMessageType::TUNER_STEP_DECREMENT),
+        "CecMessageType::TUNER_STEP_DECREMENT must match legacy value.");
+static_assert(CEC_MESSAGE_TUNER_DEVICE_STATUS == static_cast<int>(
+        CecMessageType::TUNER_DEVICE_STATUS),
+        "CecMessageType::TUNER_DEVICE_STATUS must match legacy value.");
+static_assert(CEC_MESSAGE_GIVE_TUNER_DEVICE_STATUS == static_cast<int>(
+        CecMessageType::GIVE_TUNER_DEVICE_STATUS),
+        "CecMessageType::GIVE_TUNER_DEVICE_STATUS must match legacy value.");
+static_assert(CEC_MESSAGE_RECORD_ON == static_cast<int>(CecMessageType::RECORD_ON),
+        "CecMessageType::RECORD_ON must match legacy value.");
+static_assert(CEC_MESSAGE_RECORD_STATUS == static_cast<int>(CecMessageType::RECORD_STATUS),
+        "CecMessageType::RECORD_STATUS must match legacy value.");
+static_assert(CEC_MESSAGE_RECORD_OFF == static_cast<int>(CecMessageType::RECORD_OFF),
+        "CecMessageType::RECORD_OFF must match legacy value.");
+static_assert(CEC_MESSAGE_TEXT_VIEW_ON == static_cast<int>(CecMessageType::TEXT_VIEW_ON),
+        "CecMessageType::TEXT_VIEW_ON must match legacy value.");
+static_assert(CEC_MESSAGE_RECORD_TV_SCREEN == static_cast<int>(CecMessageType::RECORD_TV_SCREEN),
+        "CecMessageType::RECORD_TV_SCREEN must match legacy value.");
+static_assert(CEC_MESSAGE_GIVE_DECK_STATUS == static_cast<int>(CecMessageType::GIVE_DECK_STATUS),
+        "CecMessageType::GIVE_DECK_STATUS must match legacy value.");
+static_assert(CEC_MESSAGE_STANDBY == static_cast<int>(CecMessageType::STANDBY),
+        "CecMessageType::STANDBY must match legacy value.");
+static_assert(CEC_MESSAGE_PLAY == static_cast<int>(CecMessageType::PLAY),
+        "CecMessageType::PLAY must match legacy value.");
+static_assert(CEC_MESSAGE_DECK_CONTROL == static_cast<int>(CecMessageType::DECK_CONTROL),
+        "CecMessageType::DECK_CONTROL must match legacy value.");
+static_assert(CEC_MESSAGE_TIMER_CLEARED_STATUS == static_cast<int>(
+        CecMessageType::TIMER_CLEARED_STATUS),
+        "CecMessageType::TIMER_CLEARED_STATUS must match legacy value.");
+static_assert(CEC_MESSAGE_USER_CONTROL_PRESSED == static_cast<int>(
+        CecMessageType::USER_CONTROL_PRESSED),
+        "CecMessageType::USER_CONTROL_PRESSED must match legacy value.");
+static_assert(CEC_MESSAGE_USER_CONTROL_RELEASED == static_cast<int>(
+        CecMessageType::USER_CONTROL_RELEASED),
+        "CecMessageType::USER_CONTROL_RELEASED must match legacy value.");
+static_assert(CEC_MESSAGE_GIVE_OSD_NAME == static_cast<int>(CecMessageType::GIVE_OSD_NAME),
+        "CecMessageType::GIVE_OSD_NAME must match legacy value.");
+static_assert(CEC_MESSAGE_SET_OSD_NAME == static_cast<int>(CecMessageType::SET_OSD_NAME),
+        "CecMessageType::SET_OSD_NAME must match legacy value.");
+static_assert(CEC_MESSAGE_SYSTEM_AUDIO_MODE_REQUEST == static_cast<int>(
+        CecMessageType::SYSTEM_AUDIO_MODE_REQUEST),
+        "CecMessageType::SYSTEM_AUDIO_MODE_REQUEST must match legacy value.");
+static_assert(CEC_MESSAGE_GIVE_AUDIO_STATUS == static_cast<int>(CecMessageType::GIVE_AUDIO_STATUS),
+        "CecMessageType::GIVE_AUDIO_STATUS must match legacy value.");
+static_assert(CEC_MESSAGE_SET_SYSTEM_AUDIO_MODE == static_cast<int>(
+        CecMessageType::SET_SYSTEM_AUDIO_MODE),
+        "CecMessageType::SET_SYSTEM_AUDIO_MODE must match legacy value.");
+static_assert(CEC_MESSAGE_REPORT_AUDIO_STATUS == static_cast<int>(
+        CecMessageType::REPORT_AUDIO_STATUS),
+        "CecMessageType::REPORT_AUDIO_STATUS must match legacy value.");
+static_assert(CEC_MESSAGE_GIVE_SYSTEM_AUDIO_MODE_STATUS == static_cast<int>(
+        CecMessageType::GIVE_SYSTEM_AUDIO_MODE_STATUS),
+        "CecMessageType::GIVE_SYSTEM_AUDIO_MODE_STATUS must match legacy value.");
+static_assert(CEC_MESSAGE_SYSTEM_AUDIO_MODE_STATUS == static_cast<int>(
+        CecMessageType::SYSTEM_AUDIO_MODE_STATUS),
+        "CecMessageType::SYSTEM_AUDIO_MODE_STATUS must match legacy value.");
+static_assert(CEC_MESSAGE_ROUTING_CHANGE == static_cast<int>(CecMessageType::ROUTING_CHANGE),
+        "CecMessageType::ROUTING_CHANGE must match legacy value.");
+static_assert(CEC_MESSAGE_ROUTING_INFORMATION == static_cast<int>(
+        CecMessageType::ROUTING_INFORMATION),
+        "CecMessageType::ROUTING_INFORMATION must match legacy value.");
+static_assert(CEC_MESSAGE_ACTIVE_SOURCE == static_cast<int>(CecMessageType::ACTIVE_SOURCE),
+        "CecMessageType::ACTIVE_SOURCE must match legacy value.");
+static_assert(CEC_MESSAGE_GIVE_PHYSICAL_ADDRESS == static_cast<int>(
+        CecMessageType::GIVE_PHYSICAL_ADDRESS),
+        "CecMessageType::GIVE_PHYSICAL_ADDRESS must match legacy value.");
+static_assert(CEC_MESSAGE_REPORT_PHYSICAL_ADDRESS == static_cast<int>(
+        CecMessageType::REPORT_PHYSICAL_ADDRESS),
+        "CecMessageType::REPORT_PHYSICAL_ADDRESS must match legacy value.");
+static_assert(CEC_MESSAGE_REQUEST_ACTIVE_SOURCE == static_cast<int>(
+        CecMessageType::REQUEST_ACTIVE_SOURCE),
+        "CecMessageType::REQUEST_ACTIVE_SOURCE must match legacy value.");
+static_assert(CEC_MESSAGE_SET_STREAM_PATH == static_cast<int>(CecMessageType::SET_STREAM_PATH),
+        "CecMessageType::SET_STREAM_PATH must match legacy value.");
+static_assert(CEC_MESSAGE_DEVICE_VENDOR_ID == static_cast<int>(CecMessageType::DEVICE_VENDOR_ID),
+        "CecMessageType::DEVICE_VENDOR_ID must match legacy value.");
+static_assert(CEC_MESSAGE_VENDOR_COMMAND == static_cast<int>(CecMessageType::VENDOR_COMMAND),
+        "CecMessageType::VENDOR_COMMAND must match legacy value.");
+static_assert(CEC_MESSAGE_VENDOR_REMOTE_BUTTON_DOWN == static_cast<int>(
+        CecMessageType::VENDOR_REMOTE_BUTTON_DOWN),
+        "CecMessageType::VENDOR_REMOTE_BUTTON_DOWN must match legacy value.");
+static_assert(CEC_MESSAGE_VENDOR_REMOTE_BUTTON_UP == static_cast<int>(
+        CecMessageType::VENDOR_REMOTE_BUTTON_UP),
+        "CecMessageType::VENDOR_REMOTE_BUTTON_UP must match legacy value.");
+static_assert(CEC_MESSAGE_GIVE_DEVICE_VENDOR_ID == static_cast<int>(
+        CecMessageType::GIVE_DEVICE_VENDOR_ID),
+        "CecMessageType::GIVE_DEVICE_VENDOR_ID must match legacy value.");
+static_assert(CEC_MESSAGE_MENU_REQUEST == static_cast<int>(CecMessageType::MENU_REQUEST),
+        "CecMessageType::MENU_REQUEST must match legacy value.");
+static_assert(CEC_MESSAGE_MENU_STATUS == static_cast<int>(CecMessageType::MENU_STATUS),
+        "CecMessageType::MENU_STATUS must match legacy value.");
+static_assert(CEC_MESSAGE_GIVE_DEVICE_POWER_STATUS == static_cast<int>(
+        CecMessageType::GIVE_DEVICE_POWER_STATUS),
+        "CecMessageType::GIVE_DEVICE_POWER_STATUS must match legacy value.");
+static_assert(CEC_MESSAGE_REPORT_POWER_STATUS == static_cast<int>(
+        CecMessageType::REPORT_POWER_STATUS),
+        "CecMessageType::REPORT_POWER_STATUS must match legacy value.");
+static_assert(CEC_MESSAGE_GET_MENU_LANGUAGE == static_cast<int>(CecMessageType::GET_MENU_LANGUAGE),
+        "CecMessageType::GET_MENU_LANGUAGE must match legacy value.");
+static_assert(CEC_MESSAGE_SELECT_ANALOG_SERVICE == static_cast<int>(
+        CecMessageType::SELECT_ANALOG_SERVICE),
+        "CecMessageType::SELECT_ANALOG_SERVICE must match legacy value.");
+static_assert(CEC_MESSAGE_SELECT_DIGITAL_SERVICE == static_cast<int>(
+        CecMessageType::SELECT_DIGITAL_SERVICE),
+        "CecMessageType::SELECT_DIGITAL_SERVICE must match legacy value.");
+static_assert(CEC_MESSAGE_SET_DIGITAL_TIMER == static_cast<int>(CecMessageType::SET_DIGITAL_TIMER),
+        "CecMessageType::SET_DIGITAL_TIMER must match legacy value.");
+static_assert(CEC_MESSAGE_CLEAR_DIGITAL_TIMER == static_cast<int>(
+        CecMessageType::CLEAR_DIGITAL_TIMER),
+        "CecMessageType::CLEAR_DIGITAL_TIMER must match legacy value.");
+static_assert(CEC_MESSAGE_SET_AUDIO_RATE == static_cast<int>(CecMessageType::SET_AUDIO_RATE),
+        "CecMessageType::SET_AUDIO_RATE must match legacy value.");
+static_assert(CEC_MESSAGE_INACTIVE_SOURCE == static_cast<int>(CecMessageType::INACTIVE_SOURCE),
+        "CecMessageType::INACTIVE_SOURCE must match legacy value.");
+static_assert(CEC_MESSAGE_CEC_VERSION == static_cast<int>(CecMessageType::CEC_VERSION),
+        "CecMessageType::CEC_VERSION must match legacy value.");
+static_assert(CEC_MESSAGE_GET_CEC_VERSION == static_cast<int>(CecMessageType::GET_CEC_VERSION),
+        "CecMessageType::GET_CEC_VERSION must match legacy value.");
+static_assert(CEC_MESSAGE_VENDOR_COMMAND_WITH_ID == static_cast<int>(
+        CecMessageType::VENDOR_COMMAND_WITH_ID),
+        "CecMessageType::VENDOR_COMMAND_WITH_ID must match legacy value.");
+static_assert(CEC_MESSAGE_CLEAR_EXTERNAL_TIMER == static_cast<int>(
+        CecMessageType::CLEAR_EXTERNAL_TIMER),
+        "CecMessageType::CLEAR_EXTERNAL_TIMER must match legacy value.");
+static_assert(CEC_MESSAGE_SET_EXTERNAL_TIMER == static_cast<int>(
+        CecMessageType::SET_EXTERNAL_TIMER),
+        "CecMessageType::SET_EXTERNAL_TIMER must match legacy value.");
+static_assert(CEC_MESSAGE_INITIATE_ARC == static_cast<int>(CecMessageType::INITIATE_ARC),
+        "CecMessageType::INITIATE_ARC must match legacy value.");
+static_assert(CEC_MESSAGE_REPORT_ARC_INITIATED == static_cast<int>(
+        CecMessageType::REPORT_ARC_INITIATED),
+        "CecMessageType::REPORT_ARC_INITIATED must match legacy value.");
+static_assert(CEC_MESSAGE_REPORT_ARC_TERMINATED == static_cast<int>(
+        CecMessageType::REPORT_ARC_TERMINATED),
+        "CecMessageType::REPORT_ARC_TERMINATED must match legacy value.");
+static_assert(CEC_MESSAGE_REQUEST_ARC_INITIATION == static_cast<int>(
+        CecMessageType::REQUEST_ARC_INITIATION),
+        "CecMessageType::REQUEST_ARC_INITIATION must match legacy value.");
+static_assert(CEC_MESSAGE_REQUEST_ARC_TERMINATION == static_cast<int>(
+        CecMessageType::REQUEST_ARC_TERMINATION),
+        "CecMessageType::REQUEST_ARC_TERMINATION must match legacy value.");
+static_assert(CEC_MESSAGE_TERMINATE_ARC == static_cast<int>(CecMessageType::TERMINATE_ARC),
+        "CecMessageType::TERMINATE_ARC must match legacy value.");
+static_assert(CEC_MESSAGE_ABORT == static_cast<int>(CecMessageType::ABORT),
+        "CecMessageType::ABORT must match legacy value.");
+
+static_assert(ABORT_UNRECOGNIZED_MODE == static_cast<int>(AbortReason::UNRECOGNIZED_MODE),
+        "AbortReason::UNRECOGNIZED_MODE must match legacy value.");
+static_assert(ABORT_NOT_IN_CORRECT_MODE == static_cast<int>(AbortReason::NOT_IN_CORRECT_MODE),
+        "AbortReason::NOT_IN_CORRECT_MODE must match legacy value.");
+static_assert(ABORT_CANNOT_PROVIDE_SOURCE == static_cast<int>(AbortReason::CANNOT_PROVIDE_SOURCE),
+        "AbortReason::CANNOT_PROVIDE_SOURCE must match legacy value.");
+static_assert(ABORT_INVALID_OPERAND == static_cast<int>(AbortReason::INVALID_OPERAND),
+        "AbortReason::INVALID_OPERAND must match legacy value.");
+static_assert(ABORT_REFUSED == static_cast<int>(AbortReason::REFUSED),
+        "AbortReason::REFUSED must match legacy value.");
+static_assert(ABORT_UNABLE_TO_DETERMINE == static_cast<int>(AbortReason::UNABLE_TO_DETERMINE),
+        "AbortReason::UNABLE_TO_DETERMINE must match legacy value.");
+
+static_assert(HDMI_RESULT_SUCCESS == static_cast<int>(SendMessageResult::SUCCESS),
+        "SendMessageResult::SUCCESS must match legacy value.");
+static_assert(HDMI_RESULT_NACK == static_cast<int>(SendMessageResult::NACK),
+        "SendMessageResult::NACK must match legacy value.");
+static_assert(HDMI_RESULT_BUSY == static_cast<int>(SendMessageResult::BUSY),
+        "SendMessageResult::BUSY must match legacy value.");
+static_assert(HDMI_RESULT_FAIL == static_cast<int>(SendMessageResult::FAIL),
+        "SendMessageResult::FAIL must match legacy value.");
+
+static_assert(HDMI_INPUT == static_cast<int>(HdmiPortType::INPUT),
+        "HdmiPortType::INPUT must match legacy value.");
+static_assert(HDMI_OUTPUT == static_cast<int>(HdmiPortType::OUTPUT),
+        "HdmiPortType::OUTPUT must match legacy value.");
+
+static_assert(HDMI_OPTION_WAKEUP == static_cast<int>(OptionKey::WAKEUP),
+        "OptionKey::WAKEUP must match legacy value.");
+static_assert(HDMI_OPTION_ENABLE_CEC == static_cast<int>(OptionKey::ENABLE_CEC),
+        "OptionKey::ENABLE_CEC must match legacy value.");
+static_assert(HDMI_OPTION_SYSTEM_CEC_CONTROL == static_cast<int>(OptionKey::SYSTEM_CEC_CONTROL),
+        "OptionKey::SYSTEM_CEC_CONTROL must match legacy value.");
+
+sp<IHdmiCecCallback> HdmiCec::mCallback = nullptr;
+
+HdmiCec::HdmiCec(hdmi_cec_device_t* device) : mDevice(device) {}
+
+// Methods from ::android::hardware::tv::cec::V1_0::IHdmiCec follow.
+Return<Result> HdmiCec::addLogicalAddress(CecLogicalAddress addr) {
+    int ret = mDevice->add_logical_address(mDevice, static_cast<cec_logical_address_t>(addr));
+    switch (ret) {
+        case 0:
+            return Result::SUCCESS;
+        case -EINVAL:
+            return Result::FAILURE_INVALID_ARGS;
+        case -ENOTSUP:
+            return Result::FAILURE_NOT_SUPPORTED;
+        case -EBUSY:
+            return Result::FAILURE_BUSY;
+        default:
+            return Result::FAILURE_UNKNOWN;
+    }
+}
+
+Return<void> HdmiCec::clearLogicalAddress() {
+    mDevice->clear_logical_address(mDevice);
+    return Void();
+}
+
+Return<void> HdmiCec::getPhysicalAddress(getPhysicalAddress_cb _hidl_cb) {
+    uint16_t addr;
+    int ret = mDevice->get_physical_address(mDevice, &addr);
+    switch (ret) {
+        case 0:
+            _hidl_cb(Result::SUCCESS, addr);
+            break;
+        case -EBADF:
+            _hidl_cb(Result::FAILURE_INVALID_STATE, addr);
+            break;
+        default:
+            _hidl_cb(Result::FAILURE_UNKNOWN, addr);
+            break;
+    }
+    return Void();
+}
+
+Return<SendMessageResult> HdmiCec::sendMessage(const CecMessage& message) {
+    if (message.body.size() > CEC_MESSAGE_BODY_MAX_LENGTH) {
+        return SendMessageResult::FAIL;
+    }
+    cec_message_t legacyMessage {
+        .initiator = static_cast<cec_logical_address_t>(message.initiator),
+        .destination = static_cast<cec_logical_address_t>(message.destination),
+        .length = message.body.size(),
+    };
+    for (size_t i = 0; i < message.body.size(); ++i) {
+        legacyMessage.body[i] = static_cast<unsigned char>(message.body[i]);
+    }
+    return static_cast<SendMessageResult>(mDevice->send_message(mDevice, &legacyMessage));
+}
+
+Return<void> HdmiCec::setCallback(const sp<IHdmiCecCallback>& callback) {
+    if (mCallback != nullptr) {
+        mCallback->unlinkToDeath(this);
+        mCallback = nullptr;
+    }
+
+    if (callback != nullptr) {
+        mCallback = callback;
+        mCallback->linkToDeath(this, 0 /*cookie*/);
+        mDevice->register_event_callback(mDevice, eventCallback, nullptr);
+    }
+    return Void();
+}
+
+Return<int32_t> HdmiCec::getCecVersion() {
+    int version;
+    mDevice->get_version(mDevice, &version);
+    return static_cast<int32_t>(version);
+}
+
+Return<uint32_t> HdmiCec::getVendorId() {
+    uint32_t vendor_id;
+    mDevice->get_vendor_id(mDevice, &vendor_id);
+    return vendor_id;
+}
+
+Return<void> HdmiCec::getPortInfo(getPortInfo_cb _hidl_cb) {
+    struct hdmi_port_info* legacyPorts;
+    int numPorts;
+    hidl_vec<HdmiPortInfo> portInfos;
+    mDevice->get_port_info(mDevice, &legacyPorts, &numPorts);
+    portInfos.resize(numPorts);
+    for (int i = 0; i < numPorts; ++i) {
+        portInfos[i] = {
+            .type = static_cast<HdmiPortType>(legacyPorts[i].type),
+            .portId = static_cast<uint32_t>(legacyPorts[i].port_id),
+            .cecSupported = legacyPorts[i].cec_supported != 0,
+            .arcSupported = legacyPorts[i].arc_supported != 0,
+            .physicalAddress = legacyPorts[i].physical_address
+        };
+    }
+    _hidl_cb(portInfos);
+    return Void();
+}
+
+Return<void> HdmiCec::setOption(OptionKey key, bool value) {
+    mDevice->set_option(mDevice, static_cast<int>(key), value ? 1 : 0);
+    return Void();
+}
+
+Return<void> HdmiCec::setLanguage(const hidl_string& language) {
+    if (language.size() != 3) {
+        LOG(ERROR) << "Wrong language code: expected 3 letters, but it was " << language.size()
+                << ".";
+        return Void();
+    }
+    const char *languageStr = language.c_str();
+    int convertedLanguage = ((languageStr[0] & 0xFF) << 16)
+            | ((languageStr[1] & 0xFF) << 8)
+            | (languageStr[2] & 0xFF);
+    mDevice->set_option(mDevice, HDMI_OPTION_SET_LANG, convertedLanguage);
+    return Void();
+}
+
+Return<void> HdmiCec::enableAudioReturnChannel(int32_t portId, bool enable) {
+    mDevice->set_audio_return_channel(mDevice, portId, enable ? 1 : 0);
+    return Void();
+}
+
+Return<bool> HdmiCec::isConnected(int32_t portId) {
+    return mDevice->is_connected(mDevice, portId) > 0;
+}
+
+IHdmiCec* getHdmiCecDefault() {
+    HdmiCecDefault* hdmiCecDefault = new HdmiCecDefault();
+    Result result = hdmiCecDefault->init();
+    if (result == Result::SUCCESS) {
+        return hdmiCecDefault;
+    }
+    LOG(ERROR) << "Failed to load default HAL.";
+    return nullptr;
+}
+
+IHdmiCec* HIDL_FETCH_IHdmiCec(const char* hal) {
+    hdmi_cec_device_t* hdmi_cec_device;
+    int ret = 0;
+    const hw_module_t* hw_module = nullptr;
+
+    ret = hw_get_module (HDMI_CEC_HARDWARE_MODULE_ID, &hw_module);
+    if (ret == 0) {
+        ret = hdmi_cec_open (hw_module, &hdmi_cec_device);
+        if (ret != 0) {
+            LOG(ERROR) << "hdmi_cec_open " << hal << " failed: " << ret;
+        }
+    } else {
+        LOG(ERROR) << "hw_get_module " << hal << " failed: " << ret;
+    }
+
+    if (ret == 0) {
+        return new HdmiCec(hdmi_cec_device);
+    } else {
+        LOG(ERROR) << "Passthrough failed to load legacy HAL.";
+        return getHdmiCecDefault();
+    }
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace cec
+}  // namespace tv
+}  // namespace hardware
+}  // namespace android

cec/HdmiCec.h

@@ -0,0 +1,109 @@
+/*
+ * 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_TV_CEC_V1_0_HDMICEC_H
+#define ANDROID_HARDWARE_TV_CEC_V1_0_HDMICEC_H
+
+#include <algorithm>
+
+#include <android/hardware/tv/cec/1.0/IHdmiCec.h>
+#include <hidl/Status.h>
+#include <hardware/hardware.h>
+#include <hardware/hdmi_cec.h>
+
+#include <hidl/MQDescriptor.h>
+namespace android {
+namespace hardware {
+namespace tv {
+namespace cec {
+namespace V1_0 {
+namespace implementation {
+
+using ::android::hardware::tv::cec::V1_0::CecLogicalAddress;
+using ::android::hardware::tv::cec::V1_0::CecMessage;
+using ::android::hardware::tv::cec::V1_0::MaxLength;
+using ::android::hardware::tv::cec::V1_0::HdmiPortInfo;
+using ::android::hardware::tv::cec::V1_0::IHdmiCec;
+using ::android::hardware::tv::cec::V1_0::IHdmiCecCallback;
+using ::android::hardware::tv::cec::V1_0::OptionKey;
+using ::android::hardware::tv::cec::V1_0::Result;
+using ::android::hardware::tv::cec::V1_0::SendMessageResult;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_string;
+using ::android::sp;
+
+struct HdmiCec : public IHdmiCec, public hidl_death_recipient {
+    HdmiCec(hdmi_cec_device_t* device);
+    // Methods from ::android::hardware::tv::cec::V1_0::IHdmiCec follow.
+    Return<Result> addLogicalAddress(CecLogicalAddress addr)  override;
+    Return<void> clearLogicalAddress()  override;
+    Return<void> getPhysicalAddress(getPhysicalAddress_cb _hidl_cb)  override;
+    Return<SendMessageResult> sendMessage(const CecMessage& message)  override;
+    Return<void> setCallback(const sp<IHdmiCecCallback>& callback)  override;
+    Return<int32_t> getCecVersion()  override;
+    Return<uint32_t> getVendorId()  override;
+    Return<void> getPortInfo(getPortInfo_cb _hidl_cb)  override;
+    Return<void> setOption(OptionKey key, bool value)  override;
+    Return<void> setLanguage(const hidl_string& language)  override;
+    Return<void> enableAudioReturnChannel(int32_t portId, bool enable)  override;
+    Return<bool> isConnected(int32_t portId)  override;
+
+    static void eventCallback(const hdmi_event_t* event, void* /* arg */) {
+        if (mCallback != nullptr && event != nullptr) {
+            if (event->type == HDMI_EVENT_CEC_MESSAGE) {
+                size_t length = std::min(event->cec.length,
+                        static_cast<size_t>(MaxLength::MESSAGE_BODY));
+                CecMessage cecMessage {
+                    .initiator = static_cast<CecLogicalAddress>(event->cec.initiator),
+                    .destination = static_cast<CecLogicalAddress>(event->cec.destination),
+                };
+                cecMessage.body.resize(length);
+                for (size_t i = 0; i < length; ++i) {
+                    cecMessage.body[i] = static_cast<uint8_t>(event->cec.body[i]);
+                }
+                mCallback->onCecMessage(cecMessage);
+            } else if (event->type == HDMI_EVENT_HOT_PLUG) {
+                HotplugEvent hotplugEvent {
+                    .connected = event->hotplug.connected > 0,
+                    .portId = static_cast<uint32_t>(event->hotplug.port_id)
+                };
+                mCallback->onHotplugEvent(hotplugEvent);
+            }
+        }
+    }
+
+    virtual void serviceDied(uint64_t /*cookie*/,
+                             const wp<::android::hidl::base::V1_0::IBase>& /*who*/) {
+        setCallback(nullptr);
+    }
+
+   private:
+    static sp<IHdmiCecCallback> mCallback;
+    const hdmi_cec_device_t* mDevice;
+};
+
+extern "C" IHdmiCec* HIDL_FETCH_IHdmiCec(const char* name);
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace cec
+}  // namespace tv
+}  // namespace hardware
+}  // namespace android
+
+#endif  // ANDROID_HARDWARE_TV_CEC_V1_0_HDMICEC_H

cec/HdmiCecDefault.cpp

@@ -0,0 +1,523 @@
+/*
+ * Copyright (C) 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 "android.hardware.tv.cec@1.0-impl"
+#include <android-base/logging.h>
+#include <android-base/properties.h>
+
+#include <cutils/properties.h>
+#include <dirent.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <linux/ioctl.h>
+#include <poll.h>
+
+#include "HdmiCecDefault.h"
+
+#define PROPERTY_DEVICE_TYPE "ro.hdmi.device_type"
+#define MIN_PORT_ID 0
+#define MAX_PORT_ID 15
+#define INVALID_PHYSICAL_ADDRESS 0xFFFF
+
+namespace android {
+namespace hardware {
+namespace tv {
+namespace cec {
+namespace V1_0 {
+namespace implementation {
+
+using android::base::GetUintProperty;
+using std::stoi;
+using std::string;
+
+HdmiCecDefault::HdmiCecDefault() {
+    mCecEnabled = false;
+    mWakeupEnabled = false;
+    mCecControlEnabled = false;
+    mCallback = nullptr;
+}
+
+HdmiCecDefault::~HdmiCecDefault() {
+    release();
+}
+
+// Methods from ::android::hardware::tv::cec::V1_0::IHdmiCec follow.
+Return<Result> HdmiCecDefault::addLogicalAddress(CecLogicalAddress addr) {
+    if (addr < CecLogicalAddress::TV || addr >= CecLogicalAddress::BROADCAST) {
+        LOG(ERROR) << "Add logical address failed, Invalid address";
+        return Result::FAILURE_INVALID_ARGS;
+    }
+
+    cec_log_addrs cecLogAddrs;
+    int ret = ioctl(mHdmiCecPorts[MIN_PORT_ID]->mCecFd, CEC_ADAP_G_LOG_ADDRS, &cecLogAddrs);
+    if (ret) {
+        LOG(ERROR) << "Add logical address failed, Error = " << strerror(errno);
+        return Result::FAILURE_BUSY;
+    }
+
+    cecLogAddrs.cec_version = getCecVersion();
+    cecLogAddrs.vendor_id = getVendorId();
+
+    unsigned int logAddrType = CEC_LOG_ADDR_TYPE_UNREGISTERED;
+    unsigned int allDevTypes = 0;
+    unsigned int primDevType = 0xff;
+    switch (addr) {
+        case CecLogicalAddress::TV:
+            primDevType = CEC_OP_PRIM_DEVTYPE_TV;
+            logAddrType = CEC_LOG_ADDR_TYPE_TV;
+            allDevTypes = CEC_OP_ALL_DEVTYPE_TV;
+            break;
+        case CecLogicalAddress::RECORDER_1:
+        case CecLogicalAddress::RECORDER_2:
+        case CecLogicalAddress::RECORDER_3:
+            primDevType = CEC_OP_PRIM_DEVTYPE_RECORD;
+            logAddrType = CEC_LOG_ADDR_TYPE_RECORD;
+            allDevTypes = CEC_OP_ALL_DEVTYPE_RECORD;
+            break;
+        case CecLogicalAddress::TUNER_1:
+        case CecLogicalAddress::TUNER_2:
+        case CecLogicalAddress::TUNER_3:
+        case CecLogicalAddress::TUNER_4:
+            primDevType = CEC_OP_PRIM_DEVTYPE_TUNER;
+            logAddrType = CEC_LOG_ADDR_TYPE_TUNER;
+            allDevTypes = CEC_OP_ALL_DEVTYPE_TUNER;
+            break;
+        case CecLogicalAddress::PLAYBACK_1:
+        case CecLogicalAddress::PLAYBACK_2:
+        case CecLogicalAddress::PLAYBACK_3:
+            primDevType = CEC_OP_PRIM_DEVTYPE_PLAYBACK;
+            logAddrType = CEC_LOG_ADDR_TYPE_PLAYBACK;
+            allDevTypes = CEC_OP_ALL_DEVTYPE_PLAYBACK;
+            cecLogAddrs.flags |= CEC_LOG_ADDRS_FL_ALLOW_RC_PASSTHRU;
+            break;
+        case CecLogicalAddress::AUDIO_SYSTEM:
+            primDevType = CEC_OP_PRIM_DEVTYPE_AUDIOSYSTEM;
+            logAddrType = CEC_LOG_ADDR_TYPE_AUDIOSYSTEM;
+            allDevTypes = CEC_OP_ALL_DEVTYPE_AUDIOSYSTEM;
+            break;
+        case CecLogicalAddress::FREE_USE:
+            primDevType = CEC_OP_PRIM_DEVTYPE_PROCESSOR;
+            logAddrType = CEC_LOG_ADDR_TYPE_SPECIFIC;
+            allDevTypes = CEC_OP_ALL_DEVTYPE_SWITCH;
+            break;
+        case CecLogicalAddress::UNREGISTERED:
+            cecLogAddrs.flags |= CEC_LOG_ADDRS_FL_ALLOW_UNREG_FALLBACK;
+            break;
+    }
+
+    int logAddrIndex = cecLogAddrs.num_log_addrs;
+
+    cecLogAddrs.num_log_addrs += 1;
+    cecLogAddrs.log_addr[logAddrIndex] = static_cast<cec_logical_address_t>(addr);
+    cecLogAddrs.log_addr_type[logAddrIndex] = logAddrType;
+    cecLogAddrs.primary_device_type[logAddrIndex] = primDevType;
+    cecLogAddrs.all_device_types[logAddrIndex] = allDevTypes;
+    cecLogAddrs.features[logAddrIndex][0] = 0;
+    cecLogAddrs.features[logAddrIndex][1] = 0;
+
+    // Return failure only if add logical address fails for all the ports
+    Return<Result> result = Result::FAILURE_BUSY;
+    for (int i = 0; i < mHdmiCecPorts.size(); i++) {
+        ret = ioctl(mHdmiCecPorts[i]->mCecFd, CEC_ADAP_S_LOG_ADDRS, &cecLogAddrs);
+        if (ret) {
+            LOG(ERROR) << "Add logical address failed for port " << mHdmiCecPorts[i]->mPortId
+                       << ", Error = " << strerror(errno);
+        } else {
+            result = Result::SUCCESS;
+        }
+    }
+    return result;
+}
+
+Return<void> HdmiCecDefault::clearLogicalAddress() {
+    cec_log_addrs cecLogAddrs;
+    memset(&cecLogAddrs, 0, sizeof(cecLogAddrs));
+    for (int i = 0; i < mHdmiCecPorts.size(); i++) {
+        int ret = ioctl(mHdmiCecPorts[i]->mCecFd, CEC_ADAP_S_LOG_ADDRS, &cecLogAddrs);
+        if (ret) {
+            LOG(ERROR) << "Clear logical Address failed for port " << mHdmiCecPorts[i]->mPortId
+                       << ", Error = " << strerror(errno);
+        }
+    }
+    return Void();
+}
+
+Return<void> HdmiCecDefault::getPhysicalAddress(getPhysicalAddress_cb callback) {
+    uint16_t addr;
+    int ret = ioctl(mHdmiCecPorts[MIN_PORT_ID]->mCecFd, CEC_ADAP_G_PHYS_ADDR, &addr);
+    if (ret) {
+        LOG(ERROR) << "Get physical address failed, Error = " << strerror(errno);
+        callback(Result::FAILURE_INVALID_STATE, addr);
+        return Void();
+    }
+    callback(Result::SUCCESS, addr);
+    return Void();
+}
+
+Return<SendMessageResult> HdmiCecDefault::sendMessage(const CecMessage& message) {
+    if (!mCecEnabled) {
+        return SendMessageResult::FAIL;
+    }
+
+    cec_msg cecMsg;
+    memset(&cecMsg, 0, sizeof(cec_msg));
+
+    int initiator = static_cast<cec_logical_address_t>(message.initiator);
+    int destination = static_cast<cec_logical_address_t>(message.destination);
+
+    cecMsg.msg[0] = (initiator << 4) | destination;
+    for (size_t i = 0; i < message.body.size(); ++i) {
+        cecMsg.msg[i + 1] = message.body[i];
+    }
+    cecMsg.len = message.body.size() + 1;
+
+    // Return failure only if send message fails for all the ports
+    Return<SendMessageResult> result = SendMessageResult::FAIL;
+    for (int i = 0; i < mHdmiCecPorts.size(); i++) {
+        int ret = ioctl(mHdmiCecPorts[i]->mCecFd, CEC_TRANSMIT, &cecMsg);
+
+        if (ret) {
+            LOG(ERROR) << "Send message failed, Error = " << strerror(errno);
+            continue;
+        }
+
+        if (cecMsg.tx_status != CEC_TX_STATUS_OK) {
+            LOG(ERROR) << "Send message tx_status = " << cecMsg.tx_status;
+        }
+
+        if (result != SendMessageResult::SUCCESS) {
+            result = getSendMessageResult(cecMsg.tx_status);
+        }
+    }
+    return result;
+}
+
+Return<void> HdmiCecDefault::setCallback(const sp<IHdmiCecCallback>& callback) {
+    if (mCallback != nullptr) {
+        mCallback->unlinkToDeath(this);
+        mCallback = nullptr;
+    }
+
+    if (callback != nullptr) {
+        mCallback = callback;
+        mCallback->linkToDeath(this, 0 /*cookie*/);
+    }
+    return Void();
+}
+
+Return<int32_t> HdmiCecDefault::getCecVersion() {
+    return property_get_int32("ro.hdmi.cec_version", CEC_OP_CEC_VERSION_1_4);
+}
+
+Return<uint32_t> HdmiCecDefault::getVendorId() {
+    return property_get_int32("ro.hdmi.vendor_id", 0x000c03 /* HDMI LLC vendor ID */);
+}
+
+Return<void> HdmiCecDefault::getPortInfo(getPortInfo_cb callback) {
+    hidl_vec<HdmiPortInfo> portInfos(mHdmiCecPorts.size());
+    for (int i = 0; i < mHdmiCecPorts.size(); i++) {
+        uint16_t addr = INVALID_PHYSICAL_ADDRESS;
+        int ret = ioctl(mHdmiCecPorts[i]->mCecFd, CEC_ADAP_G_PHYS_ADDR, &addr);
+        if (ret) {
+            LOG(ERROR) << "Get port info failed for port : " << mHdmiCecPorts[i]->mPortId
+                       << ", Error = " << strerror(errno);
+        }
+        HdmiPortType type = HdmiPortType::INPUT;
+        uint32_t deviceType = GetUintProperty<uint32_t>(PROPERTY_DEVICE_TYPE, CEC_DEVICE_PLAYBACK);
+        if (deviceType != CEC_DEVICE_TV && i == MIN_PORT_ID) {
+            type = HdmiPortType::OUTPUT;
+        }
+        portInfos[i] = {.type = type,
+                        .portId = mHdmiCecPorts[i]->mPortId,
+                        .cecSupported = true,
+                        .arcSupported = false,
+                        .physicalAddress = addr};
+    }
+    callback(portInfos);
+    return Void();
+}
+
+Return<void> HdmiCecDefault::setOption(OptionKey key, bool value) {
+    switch (key) {
+        case OptionKey::ENABLE_CEC:
+            LOG(DEBUG) << "setOption: Enable CEC: " << value;
+            mCecEnabled = value;
+            break;
+        case OptionKey::WAKEUP:
+            LOG(DEBUG) << "setOption: WAKEUP: " << value;
+            mWakeupEnabled = value;
+            break;
+        case OptionKey::SYSTEM_CEC_CONTROL:
+            LOG(DEBUG) << "setOption: SYSTEM_CEC_CONTROL: " << value;
+            mCecControlEnabled = value;
+            break;
+    }
+    return Void();
+}
+
+Return<void> HdmiCecDefault::setLanguage(const hidl_string& /*language*/) {
+    return Void();
+}
+
+Return<void> HdmiCecDefault::enableAudioReturnChannel(int32_t /*portId*/, bool /*enable*/) {
+    return Void();
+}
+
+Return<bool> HdmiCecDefault::isConnected(int32_t portId) {
+    uint16_t addr;
+    if (portId < 0 || portId >= mHdmiCecPorts.size()) {
+        LOG(ERROR) << "Port id is out of bounds, portId = " << portId;
+        return false;
+    }
+    int ret = ioctl(mHdmiCecPorts[portId]->mCecFd, CEC_ADAP_G_PHYS_ADDR, &addr);
+    if (ret) {
+        LOG(ERROR) << "Is connected failed, Error = " << strerror(errno);
+        return false;
+    }
+    if (addr == CEC_PHYS_ADDR_INVALID) {
+        return false;
+    }
+    return true;
+}
+
+int getPortId(string cecFilename) {
+    int portId = stoi(cecFilename.substr(3));
+    if (portId >= MIN_PORT_ID && portId <= MAX_PORT_ID) {
+        return portId;
+    } else {
+        return -1;
+    }
+}
+
+// Initialise the cec file descriptors
+Return<Result> HdmiCecDefault::init() {
+    const char* parentPath = "/dev/";
+    DIR* dir = opendir(parentPath);
+    const char* cecFilename = "cec";
+
+    while (struct dirent* dirEntry = readdir(dir)) {
+        string filename = dirEntry->d_name;
+        if (filename.compare(0, 3, cecFilename, 0, 3) == 0) {
+            int portId = getPortId(filename);
+            if (portId == -1) {
+                continue;
+            }
+            shared_ptr<HdmiCecPort> hdmiCecPort(new HdmiCecPort(portId));
+            string filepath = parentPath + filename;
+            Result result = hdmiCecPort->init(filepath.c_str());
+            if (result != Result::SUCCESS) {
+                continue;
+            }
+            thread eventThread(&HdmiCecDefault::event_thread, this, hdmiCecPort.get());
+            mEventThreads.push_back(std::move(eventThread));
+            mHdmiCecPorts.push_back(std::move(hdmiCecPort));
+        }
+    }
+
+    if (mHdmiCecPorts.empty()) {
+        return Result::FAILURE_NOT_SUPPORTED;
+    }
+
+    mCecEnabled = true;
+    mWakeupEnabled = true;
+    mCecControlEnabled = true;
+    return Result::SUCCESS;
+}
+
+Return<void> HdmiCecDefault::release() {
+    mCecEnabled = false;
+    mWakeupEnabled = false;
+    mCecControlEnabled = false;
+    for (thread& eventThread : mEventThreads) {
+        if (eventThread.joinable()) {
+            eventThread.join();
+        }
+    }
+    setCallback(nullptr);
+    mHdmiCecPorts.clear();
+    mEventThreads.clear();
+    return Void();
+}
+
+void HdmiCecDefault::event_thread(HdmiCecPort* hdmiCecPort) {
+    struct pollfd ufds[3] = {
+            {hdmiCecPort->mCecFd, POLLIN, 0},
+            {hdmiCecPort->mCecFd, POLLERR, 0},
+            {hdmiCecPort->mExitFd, POLLIN, 0},
+    };
+
+    while (1) {
+        ufds[0].revents = 0;
+        ufds[1].revents = 0;
+        ufds[2].revents = 0;
+
+        int ret = poll(ufds, /* size(ufds) = */ 3, /* timeout = */ -1);
+
+        if (ret <= 0) {
+            continue;
+        }
+
+        if (ufds[2].revents == POLLIN) { /* Exit */
+            break;
+        }
+
+        if (ufds[1].revents == POLLERR) { /* CEC Event */
+            cec_event ev;
+            ret = ioctl(hdmiCecPort->mCecFd, CEC_DQEVENT, &ev);
+
+            if (ret) {
+                LOG(ERROR) << "CEC_DQEVENT failed, Error = " << strerror(errno);
+                continue;
+            }
+
+            if (!mCecEnabled) {
+                continue;
+            }
+
+            if (ev.event == CEC_EVENT_STATE_CHANGE) {
+                if (mCallback != nullptr) {
+                    HotplugEvent hotplugEvent{
+                            .connected = (ev.state_change.phys_addr != CEC_PHYS_ADDR_INVALID),
+                            .portId = hdmiCecPort->mPortId};
+                    mCallback->onHotplugEvent(hotplugEvent);
+                } else {
+                    LOG(ERROR) << "No event callback for hotplug";
+                }
+            }
+        }
+
+        if (ufds[0].revents == POLLIN) { /* CEC Driver */
+            cec_msg msg = {};
+            ret = ioctl(hdmiCecPort->mCecFd, CEC_RECEIVE, &msg);
+
+            if (ret) {
+                LOG(ERROR) << "CEC_RECEIVE failed, Error = " << strerror(errno);
+                continue;
+            }
+
+            if (msg.rx_status != CEC_RX_STATUS_OK) {
+                LOG(ERROR) << "msg rx_status = " << msg.rx_status;
+                continue;
+            }
+
+            if (!mCecEnabled) {
+                continue;
+            }
+
+            if (!mWakeupEnabled && isWakeupMessage(msg)) {
+                LOG(DEBUG) << "Filter wakeup message";
+                continue;
+            }
+
+            if (!mCecControlEnabled && !isTransferableInSleep(msg)) {
+                LOG(DEBUG) << "Filter message in standby mode";
+                continue;
+            }
+
+            if (mCallback != nullptr) {
+                size_t length = std::min(msg.len - 1, (uint32_t)MaxLength::MESSAGE_BODY);
+                CecMessage cecMessage{
+                        .initiator = static_cast<CecLogicalAddress>(msg.msg[0] >> 4),
+                        .destination = static_cast<CecLogicalAddress>(msg.msg[0] & 0xf),
+                };
+                cecMessage.body.resize(length);
+                for (size_t i = 0; i < length; ++i) {
+                    cecMessage.body[i] = static_cast<uint8_t>(msg.msg[i + 1]);
+                }
+                mCallback->onCecMessage(cecMessage);
+            } else {
+                LOG(ERROR) << "no event callback for message";
+            }
+        }
+    }
+}
+
+int HdmiCecDefault::getOpcode(cec_msg message) {
+    return static_cast<uint8_t>(message.msg[1]);
+}
+
+bool HdmiCecDefault::isWakeupMessage(cec_msg message) {
+    int opcode = getOpcode(message);
+    switch (opcode) {
+        case CEC_MESSAGE_TEXT_VIEW_ON:
+        case CEC_MESSAGE_IMAGE_VIEW_ON:
+            return true;
+        default:
+            return false;
+    }
+}
+
+bool HdmiCecDefault::isTransferableInSleep(cec_msg message) {
+    int opcode = getOpcode(message);
+    switch (opcode) {
+        case CEC_MESSAGE_ABORT:
+        case CEC_MESSAGE_DEVICE_VENDOR_ID:
+        case CEC_MESSAGE_GET_CEC_VERSION:
+        case CEC_MESSAGE_GET_MENU_LANGUAGE:
+        case CEC_MESSAGE_GIVE_DEVICE_POWER_STATUS:
+        case CEC_MESSAGE_GIVE_DEVICE_VENDOR_ID:
+        case CEC_MESSAGE_GIVE_OSD_NAME:
+        case CEC_MESSAGE_GIVE_PHYSICAL_ADDRESS:
+        case CEC_MESSAGE_REPORT_PHYSICAL_ADDRESS:
+        case CEC_MESSAGE_REPORT_POWER_STATUS:
+        case CEC_MESSAGE_SET_OSD_NAME:
+        case CEC_MESSAGE_DECK_CONTROL:
+        case CEC_MESSAGE_PLAY:
+        case CEC_MESSAGE_IMAGE_VIEW_ON:
+        case CEC_MESSAGE_TEXT_VIEW_ON:
+        case CEC_MESSAGE_SYSTEM_AUDIO_MODE_REQUEST:
+            return true;
+        case CEC_MESSAGE_USER_CONTROL_PRESSED:
+            return isPowerUICommand(message);
+        default:
+            return false;
+    }
+}
+
+int HdmiCecDefault::getFirstParam(cec_msg message) {
+    return static_cast<uint8_t>(message.msg[2]);
+}
+
+bool HdmiCecDefault::isPowerUICommand(cec_msg message) {
+    int uiCommand = getFirstParam(message);
+    switch (uiCommand) {
+        case CEC_OP_UI_CMD_POWER:
+        case CEC_OP_UI_CMD_DEVICE_ROOT_MENU:
+        case CEC_OP_UI_CMD_POWER_ON_FUNCTION:
+            return true;
+        default:
+            return false;
+    }
+}
+
+Return<SendMessageResult> HdmiCecDefault::getSendMessageResult(int tx_status) {
+    switch (tx_status) {
+        case CEC_TX_STATUS_OK:
+            return SendMessageResult::SUCCESS;
+        case CEC_TX_STATUS_ARB_LOST:
+            return SendMessageResult::BUSY;
+        case CEC_TX_STATUS_NACK:
+            return SendMessageResult::NACK;
+        default:
+            return SendMessageResult::FAIL;
+    }
+}
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace cec
+}  // namespace tv
+}  // namespace hardware
+}  // namespace android

cec/HdmiCecDefault.h

@@ -0,0 +1,91 @@
+/*
+ * Copyright (C) 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.
+ */
+#include <hardware/hdmi_cec.h>
+#include <linux/cec.h>
+#include <thread>
+#include <vector>
+#include "HdmiCecPort.h"
+
+namespace android {
+namespace hardware {
+namespace tv {
+namespace cec {
+namespace V1_0 {
+namespace implementation {
+
+using std::shared_ptr;
+using std::thread;
+using std::vector;
+
+class HdmiCecDefault : public IHdmiCec, public hidl_death_recipient {
+  public:
+    HdmiCecDefault();
+    ~HdmiCecDefault();
+    // Methods from ::android::hardware::tv::cec::V1_0::IHdmiCec follow.
+    Return<Result> addLogicalAddress(CecLogicalAddress addr) override;
+    Return<void> clearLogicalAddress() override;
+    Return<void> getPhysicalAddress(getPhysicalAddress_cb _hidl_cb) override;
+    Return<SendMessageResult> sendMessage(const CecMessage& message) override;
+    Return<void> setCallback(const sp<IHdmiCecCallback>& callback) override;
+    Return<int32_t> getCecVersion() override;
+    Return<uint32_t> getVendorId() override;
+    Return<void> getPortInfo(getPortInfo_cb _hidl_cb) override;
+    Return<void> setOption(OptionKey key, bool value) override;
+    Return<void> setLanguage(const hidl_string& language) override;
+    Return<void> enableAudioReturnChannel(int32_t portId, bool enable) override;
+    Return<bool> isConnected(int32_t portId) override;
+
+    virtual void serviceDied(uint64_t, const wp<::android::hidl::base::V1_0::IBase>&) {
+        setCallback(nullptr);
+    }
+
+    Return<Result> init();
+    Return<void> release();
+
+  private:
+    void event_thread(HdmiCecPort* hdmiCecPort);
+    static int getOpcode(cec_msg message);
+    static int getFirstParam(cec_msg message);
+    static bool isWakeupMessage(cec_msg message);
+    static bool isTransferableInSleep(cec_msg message);
+    static bool isPowerUICommand(cec_msg message);
+    static Return<SendMessageResult> getSendMessageResult(int tx_status);
+
+    vector<thread> mEventThreads;
+    vector<shared_ptr<HdmiCecPort>> mHdmiCecPorts;
+
+    // When set to false, all the CEC commands are discarded. True by default after initialization.
+    bool mCecEnabled;
+    /*
+     * When set to false, HAL does not wake up the system upon receiving <Image View On> or
+     * <Text View On>. True by default after initialization.
+     */
+    bool mWakeupEnabled;
+    /*
+     * Updated when system goes into or comes out of standby mode.
+     * When set to true, Android system is handling CEC commands.
+     * When set to false, microprocessor is handling CEC commands.
+     * True by default after initialization.
+     */
+    bool mCecControlEnabled;
+    sp<IHdmiCecCallback> mCallback;
+};
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace cec
+}  // namespace tv
+}  // namespace hardware
+}  // namespace android

cec/HdmiCecMock.cpp

@@ -0,0 +1,318 @@
+/*
+ * Copyright (C) 2019 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 "android.hardware.tv.cec@1.0-mock"
+#include <android-base/logging.h>
+#include <utils/Log.h>
+
+#include <hardware/hardware.h>
+#include <hardware/hdmi_cec.h>
+#include "HdmiCecMock.h"
+
+namespace android {
+namespace hardware {
+namespace tv {
+namespace cec {
+namespace V1_0 {
+namespace implementation {
+
+/*
+ * (*set_option)() passes flags controlling the way HDMI-CEC service works down
+ * to HAL implementation. Those flags will be used in case the feature needs
+ * update in HAL itself, firmware or microcontroller.
+ */
+void HdmiCecMock::cec_set_option(int flag, int value) {
+    // maintain options and set them accordingly
+    switch (flag) {
+        case HDMI_OPTION_WAKEUP:
+            mOptionWakeUp = value;
+            break;
+        case HDMI_OPTION_ENABLE_CEC:
+            mOptionEnableCec = value;
+            break;
+        case HDMI_OPTION_SYSTEM_CEC_CONTROL:
+            mOptionSystemCecControl = value;
+            break;
+        case HDMI_OPTION_SET_LANG:
+            mOptionLanguage = value;
+    }
+}
+
+// Methods from ::android::hardware::tv::cec::V1_0::IHdmiCec follow.
+Return<Result> HdmiCecMock::addLogicalAddress(CecLogicalAddress addr) {
+    // have a list to maintain logical addresses
+    int size = mLogicalAddresses.size();
+    mLogicalAddresses.resize(size + 1);
+    mLogicalAddresses[size + 1] = addr;
+    return Result::SUCCESS;
+}
+
+Return<void> HdmiCecMock::clearLogicalAddress() {
+    // remove logical address from the list
+    mLogicalAddresses = {};
+    return Void();
+}
+
+Return<void> HdmiCecMock::getPhysicalAddress(getPhysicalAddress_cb _hidl_cb) {
+    // maintain a physical address and return it
+    // default 0xFFFF, update on hotplug event
+    _hidl_cb(Result::SUCCESS, mPhysicalAddress);
+    return Void();
+}
+
+Return<SendMessageResult> HdmiCecMock::sendMessage(const CecMessage& message) {
+    if (message.body.size() == 0) {
+        return SendMessageResult::NACK;
+    }
+    sendMessageToFifo(message);
+    return SendMessageResult::SUCCESS;
+}
+
+Return<void> HdmiCecMock::setCallback(const sp<IHdmiCecCallback>& callback) {
+    if (mCallback != nullptr) {
+        mCallback = nullptr;
+    }
+
+    if (callback != nullptr) {
+        mCallback = callback;
+        mCallback->linkToDeath(this, 0 /*cookie*/);
+
+        mInputFile = open(CEC_MSG_IN_FIFO, O_RDWR);
+        mOutputFile = open(CEC_MSG_OUT_FIFO, O_RDWR);
+        pthread_create(&mThreadId, NULL, __threadLoop, this);
+        pthread_setname_np(mThreadId, "hdmi_cec_loop");
+    }
+    return Void();
+}
+
+Return<int32_t> HdmiCecMock::getCecVersion() {
+    // maintain a cec version and return it
+    return mCecVersion;
+}
+
+Return<uint32_t> HdmiCecMock::getVendorId() {
+    return mCecVendorId;
+}
+
+Return<void> HdmiCecMock::getPortInfo(getPortInfo_cb _hidl_cb) {
+    // TODO ready port info from device specific config
+    _hidl_cb(mPortInfo);
+    return Void();
+}
+
+Return<void> HdmiCecMock::setOption(OptionKey key, bool value) {
+    cec_set_option(static_cast<int>(key), value ? 1 : 0);
+    return Void();
+}
+
+Return<void> HdmiCecMock::setLanguage(const hidl_string& language) {
+    if (language.size() != 3) {
+        LOG(ERROR) << "Wrong language code: expected 3 letters, but it was " << language.size()
+                   << ".";
+        return Void();
+    }
+    // TODO validate if language is a valid language code
+    const char* languageStr = language.c_str();
+    int convertedLanguage = ((languageStr[0] & 0xFF) << 16) | ((languageStr[1] & 0xFF) << 8) |
+                            (languageStr[2] & 0xFF);
+    cec_set_option(HDMI_OPTION_SET_LANG, convertedLanguage);
+    return Void();
+}
+
+Return<void> HdmiCecMock::enableAudioReturnChannel(int32_t portId __unused, bool enable __unused) {
+    // Maintain ARC status
+    return Void();
+}
+
+Return<bool> HdmiCecMock::isConnected(int32_t portId) {
+    // maintain port connection status and update on hotplug event
+    if (portId < mTotalPorts && portId >= 0) {
+        return mPortConnectionStatus[portId];
+    }
+    return false;
+}
+
+void* HdmiCecMock::__threadLoop(void* user) {
+    HdmiCecMock* const self = static_cast<HdmiCecMock*>(user);
+    self->threadLoop();
+    return 0;
+}
+
+int HdmiCecMock::readMessageFromFifo(unsigned char* buf, int msgCount) {
+    if (msgCount <= 0 || !buf) {
+        return 0;
+    }
+
+    int ret = -1;
+    /* maybe blocked at driver */
+    ret = read(mInputFile, buf, msgCount);
+    if (ret < 0) {
+        ALOGE("[halimp] read :%s failed, ret:%d\n", CEC_MSG_IN_FIFO, ret);
+        return -1;
+    }
+
+    return ret;
+}
+
+int HdmiCecMock::sendMessageToFifo(const CecMessage& message) {
+    unsigned char msgBuf[CEC_MESSAGE_BODY_MAX_LENGTH];
+    int ret = -1;
+
+    memset(msgBuf, 0, sizeof(msgBuf));
+    msgBuf[0] = ((static_cast<uint8_t>(message.initiator) & 0xf) << 4) |
+                (static_cast<uint8_t>(message.destination) & 0xf);
+
+    size_t length = std::min(static_cast<size_t>(message.body.size()),
+                             static_cast<size_t>(MaxLength::MESSAGE_BODY));
+    for (size_t i = 0; i < length; ++i) {
+        msgBuf[i + 1] = static_cast<unsigned char>(message.body[i]);
+    }
+
+    // open the output pipe for writing outgoing cec message
+    mOutputFile = open(CEC_MSG_OUT_FIFO, O_WRONLY);
+    if (mOutputFile < 0) {
+        ALOGD("[halimp] file open failed for writing");
+        return -1;
+    }
+
+    // write message into the output pipe
+    ret = write(mOutputFile, msgBuf, length + 1);
+    close(mOutputFile);
+    if (ret < 0) {
+        ALOGE("[halimp] write :%s failed, ret:%d\n", CEC_MSG_OUT_FIFO, ret);
+        return -1;
+    }
+    return ret;
+}
+
+void HdmiCecMock::printCecMsgBuf(const char* msg_buf, int len) {
+    char buf[64] = {};
+    int i, size = 0;
+    memset(buf, 0, sizeof(buf));
+    for (i = 0; i < len; i++) {
+        size += sprintf(buf + size, " %02x", msg_buf[i]);
+    }
+    ALOGD("[halimp] %s, msg:%s", __FUNCTION__, buf);
+}
+
+void HdmiCecMock::handleHotplugMessage(unsigned char* msgBuf) {
+    HotplugEvent hotplugEvent{.connected = ((msgBuf[3]) & 0xf) > 0,
+                              .portId = static_cast<uint32_t>(msgBuf[0] & 0xf)};
+
+    if (hotplugEvent.portId >= mPortInfo.size()) {
+        ALOGD("[halimp] ignore hot plug message, id %x does not exist", hotplugEvent.portId);
+        return;
+    }
+
+    ALOGD("[halimp] hot plug port id %x, is connected %x", (msgBuf[0] & 0xf), (msgBuf[3] & 0xf));
+    if (mPortInfo[hotplugEvent.portId].type == HdmiPortType::OUTPUT) {
+        mPhysicalAddress =
+                ((hotplugEvent.connected == 0) ? 0xffff : ((msgBuf[1] << 8) | (msgBuf[2])));
+        mPortInfo[hotplugEvent.portId].physicalAddress = mPhysicalAddress;
+        ALOGD("[halimp] hot plug physical address %x", mPhysicalAddress);
+    }
+
+    // todo update connection status
+
+    if (mCallback != nullptr) {
+        mCallback->onHotplugEvent(hotplugEvent);
+    }
+}
+
+void HdmiCecMock::handleCecMessage(unsigned char* msgBuf, int megSize) {
+    CecMessage message;
+    size_t length = std::min(static_cast<size_t>(megSize - 1),
+                             static_cast<size_t>(MaxLength::MESSAGE_BODY));
+    message.body.resize(length);
+
+    for (size_t i = 0; i < length; ++i) {
+        message.body[i] = static_cast<uint8_t>(msgBuf[i + 1]);
+        ALOGD("[halimp] msg body %x", message.body[i]);
+    }
+
+    message.initiator = static_cast<CecLogicalAddress>((msgBuf[0] >> 4) & 0xf);
+    ALOGD("[halimp] msg init %x", message.initiator);
+    message.destination = static_cast<CecLogicalAddress>((msgBuf[0] >> 0) & 0xf);
+    ALOGD("[halimp] msg dest %x", message.destination);
+
+    // messageValidateAndHandle(&event);
+
+    if (mCallback != nullptr) {
+        mCallback->onCecMessage(message);
+    }
+}
+
+void HdmiCecMock::threadLoop() {
+    ALOGD("[halimp] threadLoop start.");
+    unsigned char msgBuf[CEC_MESSAGE_BODY_MAX_LENGTH];
+    int r = -1;
+
+    // open the input pipe
+    while (mInputFile < 0) {
+        usleep(1000 * 1000);
+        mInputFile = open(CEC_MSG_IN_FIFO, O_RDONLY);
+    }
+    ALOGD("[halimp] file open ok, fd = %d.", mInputFile);
+
+    while (mCecThreadRun) {
+        if (!mOptionSystemCecControl) {
+            usleep(1000 * 1000);
+            continue;
+        }
+
+        memset(msgBuf, 0, sizeof(msgBuf));
+        // try to get a message from dev.
+        // echo -n -e '\x04\x83' >> /dev/cec
+        r = readMessageFromFifo(msgBuf, CEC_MESSAGE_BODY_MAX_LENGTH);
+        if (r <= 1) {
+            // ignore received ping messages
+            continue;
+        }
+
+        printCecMsgBuf((const char*)msgBuf, r);
+
+        if (((msgBuf[0] >> 4) & 0xf) == 0xf) {
+            // the message is a hotplug event
+            handleHotplugMessage(msgBuf);
+            continue;
+        }
+
+        handleCecMessage(msgBuf, r);
+    }
+
+    ALOGD("[halimp] thread end.");
+    // mCecDevice.mExited = true;
+}
+
+HdmiCecMock::HdmiCecMock() {
+    ALOGE("[halimp] Opening a virtual HAL for testing and virtual machine.");
+    mCallback = nullptr;
+    mPortInfo.resize(mTotalPorts);
+    mPortConnectionStatus.resize(mTotalPorts);
+    mPortInfo[0] = {.type = HdmiPortType::OUTPUT,
+                    .portId = static_cast<uint32_t>(0),
+                    .cecSupported = true,
+                    .arcSupported = false,
+                    .physicalAddress = mPhysicalAddress};
+    mPortConnectionStatus[0] = false;
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace cec
+}  // namespace tv
+}  // namespace hardware
+}  // namespace android

cec/HdmiCecMock.h

@@ -0,0 +1,122 @@
+/*
+ * Copyright (C) 2019 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_TV_CEC_V1_0_HDMICEC_H
+#define ANDROID_HARDWARE_TV_CEC_V1_0_HDMICEC_H
+
+#include <android/hardware/tv/cec/1.0/IHdmiCec.h>
+#include <hardware/hardware.h>
+#include <hardware/hdmi_cec.h>
+#include <hidl/MQDescriptor.h>
+#include <hidl/Status.h>
+#include <algorithm>
+#include <vector>
+
+using namespace std;
+
+namespace android {
+namespace hardware {
+namespace tv {
+namespace cec {
+namespace V1_0 {
+namespace implementation {
+
+using ::android::sp;
+using ::android::hardware::hidl_string;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::tv::cec::V1_0::CecLogicalAddress;
+using ::android::hardware::tv::cec::V1_0::CecMessage;
+using ::android::hardware::tv::cec::V1_0::HdmiPortInfo;
+using ::android::hardware::tv::cec::V1_0::IHdmiCec;
+using ::android::hardware::tv::cec::V1_0::IHdmiCecCallback;
+using ::android::hardware::tv::cec::V1_0::MaxLength;
+using ::android::hardware::tv::cec::V1_0::OptionKey;
+using ::android::hardware::tv::cec::V1_0::Result;
+using ::android::hardware::tv::cec::V1_0::SendMessageResult;
+
+#define CEC_MSG_IN_FIFO "/dev/cec_in_pipe"
+#define CEC_MSG_OUT_FIFO "/dev/cec_out_pipe"
+
+struct HdmiCecMock : public IHdmiCec, public hidl_death_recipient {
+    HdmiCecMock();
+    // Methods from ::android::hardware::tv::cec::V1_0::IHdmiCec follow.
+    Return<Result> addLogicalAddress(CecLogicalAddress addr) override;
+    Return<void> clearLogicalAddress() override;
+    Return<void> getPhysicalAddress(getPhysicalAddress_cb _hidl_cb) override;
+    Return<SendMessageResult> sendMessage(const CecMessage& message) override;
+    Return<void> setCallback(const sp<IHdmiCecCallback>& callback) override;
+    Return<int32_t> getCecVersion() override;
+    Return<uint32_t> getVendorId() override;
+    Return<void> getPortInfo(getPortInfo_cb _hidl_cb) override;
+    Return<void> setOption(OptionKey key, bool value) override;
+    Return<void> setLanguage(const hidl_string& language) override;
+    Return<void> enableAudioReturnChannel(int32_t portId, bool enable) override;
+    Return<bool> isConnected(int32_t portId) override;
+
+    virtual void serviceDied(uint64_t /*cookie*/,
+                             const wp<::android::hidl::base::V1_0::IBase>& /*who*/) {
+        setCallback(nullptr);
+    }
+
+    void cec_set_option(int flag, int value);
+    void printCecMsgBuf(const char* msg_buf, int len);
+
+  private:
+    static void* __threadLoop(void* data);
+    void threadLoop();
+    int readMessageFromFifo(unsigned char* buf, int msgCount);
+    int sendMessageToFifo(const CecMessage& message);
+    void handleHotplugMessage(unsigned char* msgBuf);
+    void handleCecMessage(unsigned char* msgBuf, int length);
+
+  private:
+    sp<IHdmiCecCallback> mCallback;
+
+    // Variables for the virtual cec hal impl
+    uint16_t mPhysicalAddress = 0xFFFF;
+    vector<CecLogicalAddress> mLogicalAddresses;
+    int32_t mCecVersion = 0;
+    uint32_t mCecVendorId = 0;
+
+    // Port configuration
+    int mTotalPorts = 1;
+    hidl_vec<HdmiPortInfo> mPortInfo;
+    hidl_vec<bool> mPortConnectionStatus;
+
+    // CEC Option value
+    int mOptionWakeUp = 0;
+    int mOptionEnableCec = 0;
+    int mOptionSystemCecControl = 0;
+    int mOptionLanguage = 0;
+
+    // Testing variables
+    // Input file descriptor
+    int mInputFile;
+    // Output file descriptor
+    int mOutputFile;
+    bool mCecThreadRun = true;
+    pthread_t mThreadId = 0;
+};
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace cec
+}  // namespace tv
+}  // namespace hardware
+}  // namespace android
+
+#endif  // ANDROID_HARDWARE_TV_CEC_V1_0_HDMICEC_H

cec/HdmiCecPort.cpp

@@ -0,0 +1,101 @@
+/*
+ * Copyright (C) 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 "android.hardware.tv.cec@1.0-impl"
+
+#include <android-base/logging.h>
+#include <errno.h>
+#include <linux/cec.h>
+#include <linux/ioctl.h>
+#include <sys/eventfd.h>
+#include <algorithm>
+
+#include "HdmiCecPort.h"
+
+namespace android {
+namespace hardware {
+namespace tv {
+namespace cec {
+namespace V1_0 {
+namespace implementation {
+
+HdmiCecPort::HdmiCecPort(unsigned int portId) {
+    mPortId = portId;
+    mCecFd = -1;
+    mExitFd = -1;
+}
+
+HdmiCecPort::~HdmiCecPort() {
+    release();
+}
+
+// Initialise the cec file descriptor
+Return<Result> HdmiCecPort::init(const char* path) {
+    mCecFd = open(path, O_RDWR);
+    if (mCecFd < 0) {
+        LOG(ERROR) << "Failed to open " << path << ", Error = " << strerror(errno);
+        return Result::FAILURE_NOT_SUPPORTED;
+    }
+    mExitFd = eventfd(0, EFD_NONBLOCK);
+    if (mExitFd < 0) {
+        LOG(ERROR) << "Failed to open eventfd, Error = " << strerror(errno);
+        release();
+        return Result::FAILURE_NOT_SUPPORTED;
+    }
+
+    // Ensure the CEC device supports required capabilities
+    struct cec_caps caps = {};
+    int ret = ioctl(mCecFd, CEC_ADAP_G_CAPS, &caps);
+    if (ret) {
+        LOG(ERROR) << "Unable to query cec adapter capabilities, Error = " << strerror(errno);
+        release();
+        return Result::FAILURE_NOT_SUPPORTED;
+    }
+
+    if (!(caps.capabilities & (CEC_CAP_LOG_ADDRS | CEC_CAP_TRANSMIT | CEC_CAP_PASSTHROUGH))) {
+        LOG(ERROR) << "Wrong cec adapter capabilities " << caps.capabilities;
+        release();
+        return Result::FAILURE_NOT_SUPPORTED;
+    }
+
+    uint32_t mode = CEC_MODE_INITIATOR | CEC_MODE_EXCL_FOLLOWER_PASSTHRU;
+    ret = ioctl(mCecFd, CEC_S_MODE, &mode);
+    if (ret) {
+        LOG(ERROR) << "Unable to set initiator mode, Error = " << strerror(errno);
+        release();
+        return Result::FAILURE_NOT_SUPPORTED;
+    }
+    return Result::SUCCESS;
+}
+
+Return<void> HdmiCecPort::release() {
+    if (mExitFd > 0) {
+        uint64_t tmp = 1;
+        write(mExitFd, &tmp, sizeof(tmp));
+    }
+    if (mExitFd > 0) {
+        close(mExitFd);
+    }
+    if (mCecFd > 0) {
+        close(mCecFd);
+    }
+    return Void();
+}
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace cec
+}  // namespace tv
+}  // namespace hardware
+}  // namespace android

cec/HdmiCecPort.h

@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 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.
+ */
+#include <android/hardware/tv/cec/1.0/IHdmiCec.h>
+
+namespace android {
+namespace hardware {
+namespace tv {
+namespace cec {
+namespace V1_0 {
+namespace implementation {
+
+class HdmiCecPort {
+  public:
+    HdmiCecPort(unsigned int portId);
+    ~HdmiCecPort();
+    Return<Result> init(const char* path);
+    Return<void> release();
+
+    unsigned int mPortId;
+    int mCecFd;
+    int mExitFd;
+};
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace cec
+}  // namespace tv
+}  // namespace hardware
+}  // namespace android

cec/android.hardware.tv.cec@1.0-service.mock.rc

@@ -0,0 +1,5 @@
+service vendor.cec-hal-1-0-mock /vendor/bin/hw/android.hardware.tv.cec@1.0-service.mock
+    interface android.hardware.tv.cec@1.0::IHdmiCec default
+    class hal
+    user system
+    group system

cec/android.hardware.tv.cec@1.0-service.mock.xml

@@ -0,0 +1,11 @@
+<manifest version="1.0" type="device">
+    <hal format="hidl">
+        <name>android.hardware.tv.cec</name>
+        <transport>hwbinder</transport>
+        <version>1.0</version>
+        <interface>
+            <name>IHdmiCec</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+</manifest>

cec/android.hardware.tv.cec@1.0-service.rc

@@ -0,0 +1,5 @@
+service vendor.cec-hal-1-0 /vendor/bin/hw/android.hardware.tv.cec@1.0-service
+    interface android.hardware.tv.cec@1.0::IHdmiCec default
+    class hal
+    user system
+    group system

cec/service.cpp

@@ -0,0 +1,27 @@
+/*
+ * 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.
+ */
+
+#define LOG_TAG "android.hardware.tv.cec@1.0-service"
+
+#include <android/hardware/tv/cec/1.0/IHdmiCec.h>
+#include <hidl/LegacySupport.h>
+
+using android::hardware::tv::cec::V1_0::IHdmiCec;
+using android::hardware::defaultPassthroughServiceImplementation;
+
+int main() {
+    return defaultPassthroughServiceImplementation<IHdmiCec>();
+}

cec/serviceMock.cpp

@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2019 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 "android.hardware.tv.cec@1.0-service-shim"
+
+#include <android/hardware/tv/cec/1.0/IHdmiCec.h>
+#include <hidl/LegacySupport.h>
+#include "HdmiCecMock.h"
+
+using android::hardware::configureRpcThreadpool;
+using android::hardware::joinRpcThreadpool;
+using android::hardware::tv::cec::V1_0::IHdmiCec;
+using android::hardware::tv::cec::V1_0::implementation::HdmiCecMock;
+
+int main() {
+    configureRpcThreadpool(8, true /* callerWillJoin */);
+
+    // Setup hwbinder service
+    android::sp<IHdmiCec> service = new HdmiCecMock();
+    android::status_t status;
+    status = service->registerAsService();
+    LOG_ALWAYS_FATAL_IF(status != android::OK, "Error while registering mock cec service: %d",
+                        status);
+
+    joinRpcThreadpool();
+    return 0;
+}