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/*
* 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;
}
}
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