| /* |
| * Copyright (C) 2015 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. |
| */ |
| |
| package com.android.tv.parental; |
| |
| import android.media.tv.TvContentRating; |
| import com.android.tv.parental.ContentRatingSystem.Rating; |
| import com.android.tv.parental.ContentRatingSystem.SubRating; |
| import com.android.tv.util.TvSettings; |
| import com.android.tv.util.TvSettings.ContentRatingLevel; |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| public class ContentRatingLevelPolicy { |
| private static final int AGE_THRESHOLD_FOR_LEVEL_HIGH = 6; |
| private static final int AGE_THRESHOLD_FOR_LEVEL_MEDIUM = 12; |
| private static final int AGE_THRESHOLD_FOR_LEVEL_LOW = -1; // Highest age for each rating system |
| |
| private ContentRatingLevelPolicy() {} |
| |
| public static Set<TvContentRating> getRatingsForLevel( |
| ParentalControlSettings settings, |
| ContentRatingsManager manager, |
| @ContentRatingLevel int level) { |
| if (level == TvSettings.CONTENT_RATING_LEVEL_NONE) { |
| return new HashSet<>(); |
| } else if (level == TvSettings.CONTENT_RATING_LEVEL_HIGH) { |
| return getRatingsForAge(settings, manager, AGE_THRESHOLD_FOR_LEVEL_HIGH); |
| } else if (level == TvSettings.CONTENT_RATING_LEVEL_MEDIUM) { |
| return getRatingsForAge(settings, manager, AGE_THRESHOLD_FOR_LEVEL_MEDIUM); |
| } else if (level == TvSettings.CONTENT_RATING_LEVEL_LOW) { |
| return getRatingsForAge(settings, manager, AGE_THRESHOLD_FOR_LEVEL_LOW); |
| } |
| throw new IllegalArgumentException("Unexpected rating level"); |
| } |
| |
| private static Set<TvContentRating> getRatingsForAge( |
| ParentalControlSettings settings, ContentRatingsManager manager, int age) { |
| Set<TvContentRating> ratings = new HashSet<>(); |
| |
| for (ContentRatingSystem contentRatingSystem : manager.getContentRatingSystems()) { |
| if (!settings.isContentRatingSystemEnabled(contentRatingSystem)) { |
| continue; |
| } |
| int ageLimit = age; |
| if (ageLimit == AGE_THRESHOLD_FOR_LEVEL_LOW) { |
| ageLimit = getMaxAge(contentRatingSystem); |
| } |
| for (Rating rating : contentRatingSystem.getRatings()) { |
| if (rating.getAgeHint() < ageLimit) { |
| continue; |
| } |
| TvContentRating tvContentRating = |
| TvContentRating.createRating( |
| contentRatingSystem.getDomain(), |
| contentRatingSystem.getName(), |
| rating.getName()); |
| ratings.add(tvContentRating); |
| for (SubRating subRating : rating.getSubRatings()) { |
| tvContentRating = |
| TvContentRating.createRating( |
| contentRatingSystem.getDomain(), contentRatingSystem.getName(), |
| rating.getName(), subRating.getName()); |
| ratings.add(tvContentRating); |
| } |
| } |
| } |
| |
| return ratings; |
| } |
| |
| private static int getMaxAge(ContentRatingSystem contentRatingSystem) { |
| int maxAge = 0; |
| for (Rating rating : contentRatingSystem.getRatings()) { |
| if (maxAge < rating.getAgeHint()) { |
| maxAge = rating.getAgeHint(); |
| } |
| } |
| return maxAge; |
| } |
| } |