1 files changed, 132 insertions, 0 deletions
diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/StreamKey.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/StreamKey.java
new file mode 100644
index 0000000000..acbcc9afa4
--- /dev/null
+++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/StreamKey.java
@@ -0,0 +1,132 @@
+/*
+ * Copyright (C) 2018 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.offline;
+
+import android.os.Parcel;
+import android.os.Parcelable;
+import androidx.annotation.Nullable;
+
+/**
+ * A key for a subset of media which can be separately loaded (a "stream").
+ *
+ * <p>The stream key consists of a period index, a group index within the period and a track index
+ * within the group. The interpretation of these indices depends on the type of media for which the
+ * stream key is used.
+ */
+public final class StreamKey implements Comparable<StreamKey>, Parcelable {
+
+  /** The period index. */
+  public final int periodIndex;
+  /** The group index. */
+  public final int groupIndex;
+  /** The track index. */
+  public final int trackIndex;
+
+  /**
+   * @param groupIndex The group index.
+   * @param trackIndex The track index.
+   */
+  public StreamKey(int groupIndex, int trackIndex) {
+    this(0, groupIndex, trackIndex);
+  }
+
+  /**
+   * @param periodIndex The period index.
+   * @param groupIndex The group index.
+   * @param trackIndex The track index.
+   */
+  public StreamKey(int periodIndex, int groupIndex, int trackIndex) {
+    this.periodIndex = periodIndex;
+    this.groupIndex = groupIndex;
+    this.trackIndex = trackIndex;
+  }
+
+  /* package */ StreamKey(Parcel in) {
+    periodIndex = in.readInt();
+    groupIndex = in.readInt();
+    trackIndex = in.readInt();
+  }
+
+  @Override
+  public String toString() {
+    return periodIndex + "." + groupIndex + "." + trackIndex;
+  }
+
+  @Override
+  public boolean equals(@Nullable Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+
+    StreamKey that = (StreamKey) o;
+    return periodIndex == that.periodIndex
+        && groupIndex == that.groupIndex
+        && trackIndex == that.trackIndex;
+  }
+
+  @Override
+  public int hashCode() {
+    int result = periodIndex;
+    result = 31 * result + groupIndex;
+    result = 31 * result + trackIndex;
+    return result;
+  }
+
+  // Comparable implementation.
+
+  @Override
+  public int compareTo(StreamKey o) {
+    int result = periodIndex - o.periodIndex;
+    if (result == 0) {
+      result = groupIndex - o.groupIndex;
+      if (result == 0) {
+        result = trackIndex - o.trackIndex;
+      }
+    }
+    return result;
+  }
+
+  // Parcelable implementation.
+
+  @Override
+  public int describeContents() {
+    return 0;
+  }
+
+  @Override
+  public void writeToParcel(Parcel dest, int flags) {
+    dest.writeInt(periodIndex);
+    dest.writeInt(groupIndex);
+    dest.writeInt(trackIndex);
+  }
+
+  public static final Parcelable.Creator<StreamKey> CREATOR =
+      new Parcelable.Creator<StreamKey>() {
+
+        @Override
+        public StreamKey createFromParcel(Parcel in) {
+          return new StreamKey(in);
+        }
+
+        @Override
+        public StreamKey[] newArray(int size) {
+          return new StreamKey[size];
+        }
+      };
+}