1 files changed, 141 insertions, 0 deletions
diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/TrackGroupArray.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/TrackGroupArray.java
new file mode 100644
index 0000000000..103a45080e
--- /dev/null
+++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/TrackGroupArray.java
@@ -0,0 +1,141 @@
+/*
+ * 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.source;
+
+import android.os.Parcel;
+import android.os.Parcelable;
+import androidx.annotation.Nullable;
+import org.mozilla.thirdparty.com.google.android.exoplayer2.C;
+import java.util.Arrays;
+
+/** An array of {@link TrackGroup}s exposed by a {@link MediaPeriod}. */
+public final class TrackGroupArray implements Parcelable {
+
+  /**
+   * The empty array.
+   */
+  public static final TrackGroupArray EMPTY = new TrackGroupArray();
+
+  /**
+   * The number of groups in the array. Greater than or equal to zero.
+   */
+  public final int length;
+
+  private final TrackGroup[] trackGroups;
+
+  // Lazily initialized hashcode.
+  private int hashCode;
+
+  /**
+   * @param trackGroups The groups. Must not be null or contain null elements, but may be empty.
+   */
+  public TrackGroupArray(TrackGroup... trackGroups) {
+    this.trackGroups = trackGroups;
+    this.length = trackGroups.length;
+  }
+
+  /* package */ TrackGroupArray(Parcel in) {
+    length = in.readInt();
+    trackGroups = new TrackGroup[length];
+    for (int i = 0; i < length; i++) {
+      trackGroups[i] = in.readParcelable(TrackGroup.class.getClassLoader());
+    }
+  }
+
+  /**
+   * Returns the group at a given index.
+   *
+   * @param index The index of the group.
+   * @return The group.
+   */
+  public TrackGroup get(int index) {
+    return trackGroups[index];
+  }
+
+  /**
+   * Returns the index of a group within the array.
+   *
+   * @param group The group.
+   * @return The index of the group, or {@link C#INDEX_UNSET} if no such group exists.
+   */
+  @SuppressWarnings("ReferenceEquality")
+  public int indexOf(TrackGroup group) {
+    for (int i = 0; i < length; i++) {
+      // Suppressed reference equality warning because this is looking for the index of a specific
+      // TrackGroup object, not the index of a potential equal TrackGroup.
+      if (trackGroups[i] == group) {
+        return i;
+      }
+    }
+    return C.INDEX_UNSET;
+  }
+
+  /**
+   * Returns whether this track group array is empty.
+   */
+  public boolean isEmpty() {
+    return length == 0;
+  }
+
+  @Override
+  public int hashCode() {
+    if (hashCode == 0) {
+      hashCode = Arrays.hashCode(trackGroups);
+    }
+    return hashCode;
+  }
+
+  @Override
+  public boolean equals(@Nullable Object obj) {
+    if (this == obj) {
+      return true;
+    }
+    if (obj == null || getClass() != obj.getClass()) {
+      return false;
+    }
+    TrackGroupArray other = (TrackGroupArray) obj;
+    return length == other.length && Arrays.equals(trackGroups, other.trackGroups);
+  }
+
+  // Parcelable implementation.
+
+  @Override
+  public int describeContents() {
+    return 0;
+  }
+
+  @Override
+  public void writeToParcel(Parcel dest, int flags) {
+    dest.writeInt(length);
+    for (int i = 0; i < length; i++) {
+      dest.writeParcelable(trackGroups[i], 0);
+    }
+  }
+
+  public static final Parcelable.Creator<TrackGroupArray> CREATOR =
+      new Parcelable.Creator<TrackGroupArray>() {
+
+        @Override
+        public TrackGroupArray createFromParcel(Parcel in) {
+          return new TrackGroupArray(in);
+        }
+
+        @Override
+        public TrackGroupArray[] newArray(int size) {
+          return new TrackGroupArray[size];
+        }
+      };
+}