| /* |
| * Copyright (C) 2016 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.google.android.exoplayer2.source.dash.manifest; |
| |
| import androidx.annotation.Nullable; |
| import com.google.android.exoplayer2.C; |
| import java.util.Collections; |
| import java.util.List; |
| |
| /** |
| * Encapsulates media content components over a contiguous period of time. |
| */ |
| public class Period { |
| |
| /** |
| * The period identifier, if one exists. |
| */ |
| @Nullable public final String id; |
| |
| /** |
| * The start time of the period in milliseconds. |
| */ |
| public final long startMs; |
| |
| /** |
| * The adaptation sets belonging to the period. |
| */ |
| public final List<AdaptationSet> adaptationSets; |
| |
| /** |
| * The event stream belonging to the period. |
| */ |
| public final List<EventStream> eventStreams; |
| |
| /** The asset identifier for this period, if one exists */ |
| @Nullable public final Descriptor assetIdentifier; |
| |
| /** |
| * @param id The period identifier. May be null. |
| * @param startMs The start time of the period in milliseconds. |
| * @param adaptationSets The adaptation sets belonging to the period. |
| */ |
| public Period(@Nullable String id, long startMs, List<AdaptationSet> adaptationSets) { |
| this(id, startMs, adaptationSets, Collections.emptyList(), /* assetIdentifier= */ null); |
| } |
| |
| /** |
| * @param id The period identifier. May be null. |
| * @param startMs The start time of the period in milliseconds. |
| * @param adaptationSets The adaptation sets belonging to the period. |
| * @param eventStreams The {@link EventStream}s belonging to the period. |
| */ |
| public Period(@Nullable String id, long startMs, List<AdaptationSet> adaptationSets, |
| List<EventStream> eventStreams) { |
| this(id, startMs, adaptationSets, eventStreams, /* assetIdentifier= */ null); |
| } |
| |
| /** |
| * @param id The period identifier. May be null. |
| * @param startMs The start time of the period in milliseconds. |
| * @param adaptationSets The adaptation sets belonging to the period. |
| * @param eventStreams The {@link EventStream}s belonging to the period. |
| * @param assetIdentifier The asset identifier for this period |
| */ |
| public Period( |
| @Nullable String id, |
| long startMs, |
| List<AdaptationSet> adaptationSets, |
| List<EventStream> eventStreams, |
| @Nullable Descriptor assetIdentifier) { |
| this.id = id; |
| this.startMs = startMs; |
| this.adaptationSets = Collections.unmodifiableList(adaptationSets); |
| this.eventStreams = Collections.unmodifiableList(eventStreams); |
| this.assetIdentifier = assetIdentifier; |
| } |
| |
| /** |
| * Returns the index of the first adaptation set of a given type, or {@link C#INDEX_UNSET} if no |
| * adaptation set of the specified type exists. |
| * |
| * @param type An adaptation set type. |
| * @return The index of the first adaptation set of the specified type, or {@link C#INDEX_UNSET}. |
| */ |
| public int getAdaptationSetIndex(int type) { |
| int adaptationCount = adaptationSets.size(); |
| for (int i = 0; i < adaptationCount; i++) { |
| if (adaptationSets.get(i).type == type) { |
| return i; |
| } |
| } |
| return C.INDEX_UNSET; |
| } |
| |
| } |