1 files changed, 49 insertions, 0 deletions
diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/DownloadIndex.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/DownloadIndex.java
new file mode 100644
index 0000000000..5fbb3e7c0b
--- /dev/null
+++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/DownloadIndex.java
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2019 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 androidx.annotation.Nullable;
+import androidx.annotation.WorkerThread;
+import java.io.IOException;
+
+/** An index of {@link Download Downloads}. */
+@WorkerThread
+public interface DownloadIndex {
+
+  /**
+   * Returns the {@link Download} with the given {@code id}, or null.
+   *
+   * <p>This method may be slow and shouldn't normally be called on the main thread.
+   *
+   * @param id ID of a {@link Download}.
+   * @return The {@link Download} with the given {@code id}, or null if a download state with this
+   *     id doesn't exist.
+   * @throws IOException If an error occurs reading the state.
+   */
+  @Nullable
+  Download getDownload(String id) throws IOException;
+
+  /**
+   * Returns a {@link DownloadCursor} to {@link Download}s with the given {@code states}.
+   *
+   * <p>This method may be slow and shouldn't normally be called on the main thread.
+   *
+   * @param states Returns only the {@link Download}s with this states. If empty, returns all.
+   * @return A cursor to {@link Download}s with the given {@code states}.
+   * @throws IOException If an error occurs reading the state.
+   */
+  DownloadCursor getDownloads(@Download.State int... states) throws IOException;
+}