1 /* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package androidx.media.filterfw; 18 19 import java.util.LinkedHashMap; 20 import java.util.Map; 21 22 /** 23 * This is a simple LRU cache that is used internally for managing repetitive objects. 24 */ 25 class SimpleCache<K, V> extends LinkedHashMap<K, V> { 26 27 private int mMaxEntries; 28 SimpleCache(final int maxEntries)29 public SimpleCache(final int maxEntries) { 30 super(maxEntries + 1, 1f, true); 31 mMaxEntries = maxEntries; 32 } 33 34 @Override removeEldestEntry(final Map.Entry<K, V> eldest)35 protected boolean removeEldestEntry(final Map.Entry<K, V> eldest) { 36 return super.size() > mMaxEntries; 37 } 38 } 39