1 files changed, 171 insertions, 0 deletions
diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/Metadata.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/Metadata.java
new file mode 100644
index 0000000000..16f01c4627
--- /dev/null
+++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/Metadata.java
@@ -0,0 +1,171 @@
+/*
+ * 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.metadata;
+
+import android.os.Parcel;
+import android.os.Parcelable;
+import androidx.annotation.Nullable;
+import org.mozilla.thirdparty.com.google.android.exoplayer2.Format;
+import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util;
+import java.util.Arrays;
+import java.util.List;
+
+/**
+ * A collection of metadata entries.
+ */
+public final class Metadata implements Parcelable {
+
+  /** A metadata entry. */
+  public interface Entry extends Parcelable {
+
+    /**
+     * Returns the {@link Format} that can be used to decode the wrapped metadata in {@link
+     * #getWrappedMetadataBytes()}, or null if this Entry doesn't contain wrapped metadata.
+     */
+    @Nullable
+    default Format getWrappedMetadataFormat() {
+      return null;
+    }
+
+    /**
+     * Returns the bytes of the wrapped metadata in this Entry, or null if it doesn't contain
+     * wrapped metadata.
+     */
+    @Nullable
+    default byte[] getWrappedMetadataBytes() {
+      return null;
+    }
+  }
+
+  private final Entry[] entries;
+
+  /**
+   * @param entries The metadata entries.
+   */
+  public Metadata(Entry... entries) {
+    this.entries = entries;
+  }
+
+  /**
+   * @param entries The metadata entries.
+   */
+  public Metadata(List<? extends Entry> entries) {
+    this.entries = new Entry[entries.size()];
+    entries.toArray(this.entries);
+  }
+
+  /* package */ Metadata(Parcel in) {
+    entries = new Metadata.Entry[in.readInt()];
+    for (int i = 0; i < entries.length; i++) {
+      entries[i] = in.readParcelable(Entry.class.getClassLoader());
+    }
+  }
+
+  /**
+   * Returns the number of metadata entries.
+   */
+  public int length() {
+    return entries.length;
+  }
+
+  /**
+   * Returns the entry at the specified index.
+   *
+   * @param index The index of the entry.
+   * @return The entry at the specified index.
+   */
+  public Metadata.Entry get(int index) {
+    return entries[index];
+  }
+
+  /**
+   * Returns a copy of this metadata with the entries of the specified metadata appended. Returns
+   * this instance if {@code other} is null.
+   *
+   * @param other The metadata that holds the entries to append. If null, this methods returns this
+   *     instance.
+   * @return The metadata instance with the appended entries.
+   */
+  public Metadata copyWithAppendedEntriesFrom(@Nullable Metadata other) {
+    if (other == null) {
+      return this;
+    }
+    return copyWithAppendedEntries(other.entries);
+  }
+
+  /**
+   * Returns a copy of this metadata with the specified entries appended.
+   *
+   * @param entriesToAppend The entries to append.
+   * @return The metadata instance with the appended entries.
+   */
+  public Metadata copyWithAppendedEntries(Entry... entriesToAppend) {
+    if (entriesToAppend.length == 0) {
+      return this;
+    }
+    return new Metadata(Util.nullSafeArrayConcatenation(entries, entriesToAppend));
+  }
+
+  @Override
+  public boolean equals(@Nullable Object obj) {
+    if (this == obj) {
+      return true;
+    }
+    if (obj == null || getClass() != obj.getClass()) {
+      return false;
+    }
+    Metadata other = (Metadata) obj;
+    return Arrays.equals(entries, other.entries);
+  }
+
+  @Override
+  public int hashCode() {
+    return Arrays.hashCode(entries);
+  }
+
+  @Override
+  public String toString() {
+    return "entries=" + Arrays.toString(entries);
+  }
+
+  // Parcelable implementation.
+
+  @Override
+  public int describeContents() {
+    return 0;
+  }
+
+  @Override
+  public void writeToParcel(Parcel dest, int flags) {
+    dest.writeInt(entries.length);
+    for (Entry entry : entries) {
+      dest.writeParcelable(entry, 0);
+    }
+  }
+
+  public static final Parcelable.Creator<Metadata> CREATOR =
+      new Parcelable.Creator<Metadata>() {
+        @Override
+        public Metadata createFromParcel(Parcel in) {
+          return new Metadata(in);
+        }
+
+        @Override
+        public Metadata[] newArray(int size) {
+          return new Metadata[size];
+        }
+      };
+}