diff options
Diffstat (limited to 'mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/LongArray.java')
-rw-r--r-- | mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/LongArray.java | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/LongArray.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/LongArray.java new file mode 100644 index 0000000000..ef6f938ca8 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/LongArray.java @@ -0,0 +1,84 @@ +/* + * 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 org.mozilla.thirdparty.com.google.android.exoplayer2.util; + +import java.util.Arrays; + +/** + * An append-only, auto-growing {@code long[]}. + */ +public final class LongArray { + + private static final int DEFAULT_INITIAL_CAPACITY = 32; + + private int size; + private long[] values; + + public LongArray() { + this(DEFAULT_INITIAL_CAPACITY); + } + + /** + * @param initialCapacity The initial capacity of the array. + */ + public LongArray(int initialCapacity) { + values = new long[initialCapacity]; + } + + /** + * Appends a value. + * + * @param value The value to append. + */ + public void add(long value) { + if (size == values.length) { + values = Arrays.copyOf(values, size * 2); + } + values[size++] = value; + } + + /** + * Returns the value at a specified index. + * + * @param index The index. + * @return The corresponding value. + * @throws IndexOutOfBoundsException If the index is less than zero, or greater than or equal to + * {@link #size()}. + */ + public long get(int index) { + if (index < 0 || index >= size) { + throw new IndexOutOfBoundsException("Invalid index " + index + ", size is " + size); + } + return values[index]; + } + + /** + * Returns the current size of the array. + */ + public int size() { + return size; + } + + /** + * Copies the current values into a newly allocated primitive array. + * + * @return The primitive array containing the copied values. + */ + public long[] toArray() { + return Arrays.copyOf(values, size); + } + +} |