1 files changed, 113 insertions, 0 deletions
diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/LoadControl.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/LoadControl.java
new file mode 100644
index 0000000000..5076018d65
--- /dev/null
+++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/LoadControl.java
@@ -0,0 +1,113 @@
+/*
+ * 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;
+
+import org.mozilla.thirdparty.com.google.android.exoplayer2.source.TrackGroup;
+import org.mozilla.thirdparty.com.google.android.exoplayer2.source.TrackGroupArray;
+import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.TrackSelectionArray;
+import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.Allocator;
+
+/**
+ * Controls buffering of media.
+ */
+public interface LoadControl {
+
+  /**
+   * Called by the player when prepared with a new source.
+   */
+  void onPrepared();
+
+  /**
+   * Called by the player when a track selection occurs.
+   *
+   * @param renderers The renderers.
+   * @param trackGroups The {@link TrackGroup}s from which the selection was made.
+   * @param trackSelections The track selections that were made.
+   */
+  void onTracksSelected(Renderer[] renderers, TrackGroupArray trackGroups,
+      TrackSelectionArray trackSelections);
+
+  /**
+   * Called by the player when stopped.
+   */
+  void onStopped();
+
+  /**
+   * Called by the player when released.
+   */
+  void onReleased();
+
+  /**
+   * Returns the {@link Allocator} that should be used to obtain media buffer allocations.
+   */
+  Allocator getAllocator();
+
+  /**
+   * Returns the duration of media to retain in the buffer prior to the current playback position,
+   * for fast backward seeking.
+   * <p>
+   * Note: If {@link #retainBackBufferFromKeyframe()} is false then seeking in the back-buffer will
+   * only be fast if the back-buffer contains a keyframe prior to the seek position.
+   * <p>
+   * Note: Implementations should return a single value. Dynamic changes to the back-buffer are not
+   * currently supported.
+   *
+   * @return The duration of media to retain in the buffer prior to the current playback position,
+   *     in microseconds.
+   */
+  long getBackBufferDurationUs();
+
+  /**
+   * Returns whether media should be retained from the keyframe before the current playback position
+   * minus {@link #getBackBufferDurationUs()}, rather than any sample before or at that position.
+   * <p>
+   * Warning: Returning true will cause the back-buffer size to depend on the spacing of keyframes
+   * in the media being played. Returning true is not recommended unless you control the media and
+   * are comfortable with the back-buffer size exceeding {@link #getBackBufferDurationUs()} by as
+   * much as the maximum duration between adjacent keyframes in the media.
+   * <p>
+   * Note: Implementations should return a single value. Dynamic changes to the back-buffer are not
+   * currently supported.
+   *
+   * @return Whether media should be retained from the keyframe before the current playback position
+   * minus {@link #getBackBufferDurationUs()}, rather than any sample before or at that position.
+   */
+  boolean retainBackBufferFromKeyframe();
+
+  /**
+   * Called by the player to determine whether it should continue to load the source.
+   *
+   * @param bufferedDurationUs The duration of media that's currently buffered.
+   * @param playbackSpeed The current playback speed.
+   * @return Whether the loading should continue.
+   */
+  boolean shouldContinueLoading(long bufferedDurationUs, float playbackSpeed);
+
+  /**
+   * Called repeatedly by the player when it's loading the source, has yet to start playback, and
+   * has the minimum amount of data necessary for playback to be started. The value returned
+   * determines whether playback is actually started. The load control may opt to return {@code
+   * false} until some condition has been met (e.g. a certain amount of media is buffered).
+   *
+   * @param bufferedDurationUs The duration of media that's currently buffered.
+   * @param playbackSpeed The current playback speed.
+   * @param rebuffering Whether the player is rebuffering. A rebuffer is defined to be caused by
+   *     buffer depletion rather than a user action. Hence this parameter is false during initial
+   *     buffering and when buffering as a result of a seek operation.
+   * @return Whether playback should be allowed to start or resume.
+   */
+  boolean shouldStartPlayback(long bufferedDurationUs, float playbackSpeed, boolean rebuffering);
+}