| /* |
| * 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.trackselection; |
| |
| import androidx.annotation.Nullable; |
| import java.util.Arrays; |
| import org.checkerframework.checker.nullness.compatqual.NullableType; |
| |
| /** An array of {@link TrackSelection}s. */ |
| public final class TrackSelectionArray { |
| |
| /** The length of this array. */ |
| public final int length; |
| |
| private final @NullableType TrackSelection[] trackSelections; |
| |
| // Lazily initialized hashcode. |
| private int hashCode; |
| |
| /** @param trackSelections The selections. Must not be null, but may contain null elements. */ |
| public TrackSelectionArray(@NullableType TrackSelection... trackSelections) { |
| this.trackSelections = trackSelections; |
| this.length = trackSelections.length; |
| } |
| |
| /** |
| * Returns the selection at a given index. |
| * |
| * @param index The index of the selection. |
| * @return The selection. |
| */ |
| @Nullable |
| public TrackSelection get(int index) { |
| return trackSelections[index]; |
| } |
| |
| /** Returns the selections in a newly allocated array. */ |
| public @NullableType TrackSelection[] getAll() { |
| return trackSelections.clone(); |
| } |
| |
| @Override |
| public int hashCode() { |
| if (hashCode == 0) { |
| int result = 17; |
| result = 31 * result + Arrays.hashCode(trackSelections); |
| hashCode = result; |
| } |
| return hashCode; |
| } |
| |
| @Override |
| public boolean equals(@Nullable Object obj) { |
| if (this == obj) { |
| return true; |
| } |
| if (obj == null || getClass() != obj.getClass()) { |
| return false; |
| } |
| TrackSelectionArray other = (TrackSelectionArray) obj; |
| return Arrays.equals(trackSelections, other.trackSelections); |
| } |
| } |