1 files changed, 57 insertions, 0 deletions
diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/TimestampAdjusterProvider.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/TimestampAdjusterProvider.java
new file mode 100644
index 0000000000..e2a652d05c
--- /dev/null
+++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/TimestampAdjusterProvider.java
@@ -0,0 +1,57 @@
+/*
+ * 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.hls;
+
+import android.util.SparseArray;
+import org.mozilla.thirdparty.com.google.android.exoplayer2.util.TimestampAdjuster;
+
+/**
+ * Provides {@link TimestampAdjuster} instances for use during HLS playbacks.
+ */
+public final class TimestampAdjusterProvider {
+
+  // TODO: Prevent this array from growing indefinitely large by removing adjusters that are no
+  // longer required.
+  private final SparseArray<TimestampAdjuster> timestampAdjusters;
+
+  public TimestampAdjusterProvider() {
+    timestampAdjusters = new SparseArray<>();
+  }
+
+  /**
+   * Returns a {@link TimestampAdjuster} suitable for adjusting the pts timestamps contained in
+   * a chunk with a given discontinuity sequence.
+   *
+   * @param discontinuitySequence The chunk's discontinuity sequence.
+   * @return A {@link TimestampAdjuster}.
+   */
+  public TimestampAdjuster getAdjuster(int discontinuitySequence) {
+    TimestampAdjuster adjuster = timestampAdjusters.get(discontinuitySequence);
+    if (adjuster == null) {
+      adjuster = new TimestampAdjuster(TimestampAdjuster.DO_NOT_OFFSET);
+      timestampAdjusters.put(discontinuitySequence, adjuster);
+    }
+    return adjuster;
+  }
+
+  /**
+   * Resets the provider.
+   */
+  public void reset() {
+    timestampAdjusters.clear();
+  }
+
+}