1 /* 2 * Copyright (C) 2018 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 package com.google.android.exoplayer2.offline; 17 18 import java.util.List; 19 20 /** 21 * A manifest that can generate copies of itself including only the streams specified by the given 22 * keys. 23 * 24 * @param <T> The manifest type. 25 */ 26 public interface FilterableManifest<T> { 27 28 /** 29 * Returns a copy of the manifest including only the streams specified by the given keys. If the 30 * manifest is unchanged then the instance may return itself. 31 * 32 * @param streamKeys A non-empty list of stream keys. 33 * @return The filtered manifest. 34 */ copy(List<StreamKey> streamKeys)35 T copy(List<StreamKey> streamKeys); 36 } 37