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/*
* Copyright (C) 2022 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 "EmulatedVehicleHardware"
#include "EmulatedVehicleHardware.h"
#include "VehicleEmulator.h"
#include <VehicleHalTypes.h>
#include <VehicleUtils.h>
#include <android-base/properties.h>
#include <android/binder_manager.h>
#include <utils/Log.h>
namespace android {
namespace hardware {
namespace automotive {
namespace vehicle {
namespace fake {
using ::aidl::android::hardware::automotive::vehicle::StatusCode;
using ::aidl::android::hardware::automotive::vehicle::SetValueRequest;
using ::aidl::android::hardware::automotive::vehicle::SetValueResult;
using ::aidl::android::hardware::automotive::vehicle::VehiclePropConfig;
using ::aidl::android::hardware::automotive::vehicle::VehiclePropValue;
using ::aidl::android::hardware::automotive::vehicle::VehicleProperty;
using ::android::base::Result;
using ::android::hardware::automotive::vehicle::V2_0::impl::MessageSender;
EmulatedVehicleHardware::EmulatedVehicleHardware() {
Init();
}
EmulatedVehicleHardware::EmulatedVehicleHardware(
std::string_view default_config_dir, std::string_view override_config_dir,
bool force_override)
: FakeVehicleHardware(std::string(default_config_dir),
std::string(override_config_dir), force_override) {
Init();
}
EmulatedVehicleHardware::EmulatedVehicleHardware(
bool inQemu,
std::unique_ptr<MessageSender> socketComm,
std::unique_ptr<MessageSender> pipeComm) {
mInQemu = inQemu;
mEmulator = std::make_unique<VehicleEmulator>(std::move(socketComm), std::move(pipeComm), this);
}
VehicleEmulator* EmulatedVehicleHardware::getEmulator() {
return mEmulator.get();
}
EmulatedVehicleHardware::~EmulatedVehicleHardware() {
mEmulator.reset();
stopVehicleBuses();
}
void EmulatedVehicleHardware::Init() {
mInQemu = isInQemu();
ALOGD("mInQemu=%s", mInQemu ? "true" : "false");
mVehicleBusCallback = ::ndk::SharedRefBase::make<VehicleBusCallback>(this);
mEmulator = std::make_unique<VehicleEmulator>(this);
startVehicleBuses();
}
StatusCode EmulatedVehicleHardware::setValues(
std::shared_ptr<const SetValuesCallback> callback,
const std::vector<SetValueRequest>& requests) {
std::vector<SetValueResult> results;
for (const auto& request: requests) {
const VehiclePropValue& value = request.value;
int propId = value.prop;
ALOGD("Set value for property ID: %d", propId);
if (mInQemu && propId == toInt(VehicleProperty::DISPLAY_BRIGHTNESS)) {
ALOGD("Return OKAY for DISPLAY_BRIGHTNESS in QEMU");
// Emulator does not support remote brightness control, b/139959479
// do not send it down so that it does not bring unnecessary property change event
// return other error code, such NOT_AVAILABLE, causes Emulator to be freezing
// TODO: return StatusCode::NOT_AVAILABLE once the above issue is fixed
results.push_back({
.requestId = request.requestId,
.status = StatusCode::OK,
});
continue;
}
SetValueResult setValueResult;
setValueResult.requestId = request.requestId;
if (auto result = setValue(value); !result.ok()) {
ALOGE("failed to set value, error: %s, code: %d", getErrorMsg(result).c_str(),
getIntErrorCode(result));
setValueResult.status = getErrorCode(result);
} else {
setValueResult.status = StatusCode::OK;
// Inform the emulator about a new value change.
mEmulator->doSetValueFromClient(value);
}
results.push_back(std::move(setValueResult));
}
// In real Vehicle HAL, the values would be sent to vehicle bus. But here, we just assume
// it is done and notify the client.
(*callback)(std::move(results));
return StatusCode::OK;
}
void EmulatedVehicleHardware::startVehicleBuses() {
std::vector<std::string> names;
AServiceManager_forEachDeclaredInstance(IVehicleBus::descriptor, static_cast<void*>(&names),
[](const char* instance, void* context) {
auto fullName = std::string(IVehicleBus::descriptor) + "/" + instance;
static_cast<std::vector<std::string>*>(context)->push_back(fullName);
});
for (const auto& fullName : names) {
::ndk::SpAIBinder binder(AServiceManager_waitForService(fullName.c_str()));
if (binder.get() == nullptr) {
ALOGE("%s binder returned null", fullName.c_str());
continue;
}
std::shared_ptr<IVehicleBus> vehicleBus = IVehicleBus::fromBinder(binder);
if (vehicleBus == nullptr) {
ALOGE("Couldn't open %s", fullName.c_str());
continue;
}
vehicleBus->setOnNewPropValuesCallback(mVehicleBusCallback);
mVehicleBuses.push_back(vehicleBus);
}
}
::ndk::ScopedAStatus EmulatedVehicleHardware::VehicleBusCallback::onNewPropValues(
const std::vector<AidlVehiclePropValue>& aidlPropValues) {
for (const auto& aidlPropValue : aidlPropValues) {
if (auto result = mVehicleHardware->setValue(aidlPropValue); !result.ok()) {
ALOGE("Failed to set value, error: %s", getErrorMsg(result).c_str());
continue;
}
}
return ::ndk::ScopedAStatus::ok();
}
void EmulatedVehicleHardware::stopVehicleBuses() {
for (const auto& vehicleBus : mVehicleBuses) {
vehicleBus->unsetOnNewPropValuesCallback(mVehicleBusCallback);
}
}
std::vector<VehiclePropValuePool::RecyclableType> EmulatedVehicleHardware::getAllProperties()
const {
return mServerSidePropStore->readAllValues();
}
EmulatedVehicleHardware::ConfigResultType EmulatedVehicleHardware::getPropConfig(int32_t propId)
const {
return mServerSidePropStore->getPropConfig(propId);
}
bool EmulatedVehicleHardware::isInQemu() {
return android::base::GetBoolProperty("ro.boot.qemu", false);
}
} // namespace fake
} // namespace vehicle
} // namespace automotive
} // namespace hardware
} // namespace android
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