fingerprint/hal.cpp

/*
 * 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.
 */

#include "hal.h"
#include "session.h"
#include "storage.h"

namespace aidl::android::hardware::biometrics::fingerprint {
namespace {
constexpr char HW_COMPONENT_ID[] = "FingerprintSensor";
constexpr char XW_VERSION[] = "ranchu/fingerprint/aidl";
constexpr char FW_VERSION[] = "1";
constexpr char SERIAL_NUMBER[] = "00000001";
constexpr char SW_COMPONENT_ID[] = "matchingAlgorithm";
} // namespace

ndk::ScopedAStatus Hal::getSensorProps(std::vector<SensorProps>* out) {
    std::vector<common::ComponentInfo> componentInfo = {
        {
            HW_COMPONENT_ID,
            XW_VERSION,
            FW_VERSION,
            SERIAL_NUMBER,
            "" /* softwareVersion */
        },
        {
            SW_COMPONENT_ID,
            "" /* hardwareVersion */,
            "" /* firmwareVersion */,
            "" /* serialNumber */,
            XW_VERSION
        }
    };

    SensorLocation sensorLocation;
    sensorLocation.sensorLocationX = 0;
    sensorLocation.sensorLocationY = 0;
    sensorLocation.sensorRadius = 0;
    sensorLocation.display = "";

    TouchDetectionParameters touchDetectionParameters;
    touchDetectionParameters.targetSize = 1.0;
    touchDetectionParameters.minOverlap = 0.2;

    SensorProps props;
    props.commonProps.sensorId = 0;
    props.commonProps.sensorStrength = common::SensorStrength::STRONG;
    props.commonProps.maxEnrollmentsPerUser = Storage::getMaxEnrollmentsPerUser();
    props.commonProps.componentInfo = std::move(componentInfo);
    props.sensorType = FingerprintSensorType::REAR;
    props.sensorLocations.push_back(std::move(sensorLocation));
    props.supportsNavigationGestures = false;
    props.supportsDetectInteraction = true;
    props.halHandlesDisplayTouches = false;
    props.halControlsIllumination = false;
    props.touchDetectionParameters = touchDetectionParameters;

    out->push_back(std::move(props));
    return ndk::ScopedAStatus::ok();
}

ndk::ScopedAStatus Hal::createSession(const int32_t sensorId,
                                      const int32_t userId,
                                      const std::shared_ptr<ISessionCallback>& cb,
                                      std::shared_ptr<ISession>* out) {
    *out = SharedRefBase::make<Session>(sensorId, userId, cb);
    return ndk::ScopedAStatus::ok();
}

} // namespace aidl::android::hardware::biometrics::fingerprint