86 lines
3.2 KiB
Java
86 lines
3.2 KiB
Java
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/*
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* Copyright (C) 2023 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.hardware.face;
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import android.annotation.NonNull;
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import android.content.Context;
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import android.hardware.biometrics.BiometricAuthenticator;
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import android.hardware.biometrics.BiometricManager;
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import android.hardware.biometrics.common.CommonProps;
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import android.hardware.biometrics.common.SensorStrength;
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import android.hardware.biometrics.face.SensorProps;
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import com.android.internal.R;
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/**
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* Parse HIDL face sensor config and map it to SensorProps.aidl to match AIDL.
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* See core/res/res/values/config.xml config_biometric_sensors
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* @hide
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*/
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public final class HidlFaceSensorConfig extends SensorProps {
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private int mSensorId;
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private int mModality;
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private int mStrength;
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/**
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* Parse through the config string and map it to SensorProps.aidl.
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* @throws IllegalArgumentException when config string has unexpected format
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*/
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public void parse(@NonNull String config, @NonNull Context context)
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throws IllegalArgumentException {
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final String[] elems = config.split(":");
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if (elems.length < 3) {
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throw new IllegalArgumentException();
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}
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mSensorId = Integer.parseInt(elems[0]);
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mModality = Integer.parseInt(elems[1]);
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mStrength = Integer.parseInt(elems[2]);
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mapHidlToAidlFaceSensorConfigurations(context);
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}
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@BiometricAuthenticator.Modality
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public int getModality() {
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return mModality;
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}
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private void mapHidlToAidlFaceSensorConfigurations(@NonNull Context context) {
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commonProps = new CommonProps();
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commonProps.sensorId = mSensorId;
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commonProps.sensorStrength = authenticatorStrengthToPropertyStrength(mStrength);
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halControlsPreview = context.getResources().getBoolean(
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R.bool.config_faceAuthSupportsSelfIllumination);
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commonProps.maxEnrollmentsPerUser = context.getResources().getInteger(
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R.integer.config_faceMaxTemplatesPerUser);
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commonProps.componentInfo = null;
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supportsDetectInteraction = false;
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}
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private byte authenticatorStrengthToPropertyStrength(
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@BiometricManager.Authenticators.Types int strength) {
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switch (strength) {
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case BiometricManager.Authenticators.BIOMETRIC_CONVENIENCE:
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return SensorStrength.CONVENIENCE;
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case BiometricManager.Authenticators.BIOMETRIC_WEAK:
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return SensorStrength.WEAK;
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case BiometricManager.Authenticators.BIOMETRIC_STRONG:
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return SensorStrength.STRONG;
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default:
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throw new IllegalArgumentException("Unknown strength: " + strength);
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}
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}
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}
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