1 files changed, 209 insertions, 0 deletions
diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/BasePlayer.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/BasePlayer.java
new file mode 100644
index 0000000000..c06361e69b
--- /dev/null
+++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/BasePlayer.java
@@ -0,0 +1,209 @@
+/*
+ * 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;
+
+import androidx.annotation.Nullable;
+import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util;
+
+/** Abstract base {@link Player} which implements common implementation independent methods. */
+public abstract class BasePlayer implements Player {
+
+  protected final Timeline.Window window;
+
+  public BasePlayer() {
+    window = new Timeline.Window();
+  }
+
+  @Override
+  public final boolean isPlaying() {
+    return getPlaybackState() == Player.STATE_READY
+        && getPlayWhenReady()
+        && getPlaybackSuppressionReason() == PLAYBACK_SUPPRESSION_REASON_NONE;
+  }
+
+  @Override
+  public final void seekToDefaultPosition() {
+    seekToDefaultPosition(getCurrentWindowIndex());
+  }
+
+  @Override
+  public final void seekToDefaultPosition(int windowIndex) {
+    seekTo(windowIndex, /* positionMs= */ C.TIME_UNSET);
+  }
+
+  @Override
+  public final void seekTo(long positionMs) {
+    seekTo(getCurrentWindowIndex(), positionMs);
+  }
+
+  @Override
+  public final boolean hasPrevious() {
+    return getPreviousWindowIndex() != C.INDEX_UNSET;
+  }
+
+  @Override
+  public final void previous() {
+    int previousWindowIndex = getPreviousWindowIndex();
+    if (previousWindowIndex != C.INDEX_UNSET) {
+      seekToDefaultPosition(previousWindowIndex);
+    }
+  }
+
+  @Override
+  public final boolean hasNext() {
+    return getNextWindowIndex() != C.INDEX_UNSET;
+  }
+
+  @Override
+  public final void next() {
+    int nextWindowIndex = getNextWindowIndex();
+    if (nextWindowIndex != C.INDEX_UNSET) {
+      seekToDefaultPosition(nextWindowIndex);
+    }
+  }
+
+  @Override
+  public final void stop() {
+    stop(/* reset= */ false);
+  }
+
+  @Override
+  public final int getNextWindowIndex() {
+    Timeline timeline = getCurrentTimeline();
+    return timeline.isEmpty()
+        ? C.INDEX_UNSET
+        : timeline.getNextWindowIndex(
+            getCurrentWindowIndex(), getRepeatModeForNavigation(), getShuffleModeEnabled());
+  }
+
+  @Override
+  public final int getPreviousWindowIndex() {
+    Timeline timeline = getCurrentTimeline();
+    return timeline.isEmpty()
+        ? C.INDEX_UNSET
+        : timeline.getPreviousWindowIndex(
+            getCurrentWindowIndex(), getRepeatModeForNavigation(), getShuffleModeEnabled());
+  }
+
+  @Override
+  @Nullable
+  public final Object getCurrentTag() {
+    Timeline timeline = getCurrentTimeline();
+    return timeline.isEmpty() ? null : timeline.getWindow(getCurrentWindowIndex(), window).tag;
+  }
+
+  @Override
+  @Nullable
+  public final Object getCurrentManifest() {
+    Timeline timeline = getCurrentTimeline();
+    return timeline.isEmpty() ? null : timeline.getWindow(getCurrentWindowIndex(), window).manifest;
+  }
+
+  @Override
+  public final int getBufferedPercentage() {
+    long position = getBufferedPosition();
+    long duration = getDuration();
+    return position == C.TIME_UNSET || duration == C.TIME_UNSET
+        ? 0
+        : duration == 0 ? 100 : Util.constrainValue((int) ((position * 100) / duration), 0, 100);
+  }
+
+  @Override
+  public final boolean isCurrentWindowDynamic() {
+    Timeline timeline = getCurrentTimeline();
+    return !timeline.isEmpty() && timeline.getWindow(getCurrentWindowIndex(), window).isDynamic;
+  }
+
+  @Override
+  public final boolean isCurrentWindowLive() {
+    Timeline timeline = getCurrentTimeline();
+    return !timeline.isEmpty() && timeline.getWindow(getCurrentWindowIndex(), window).isLive;
+  }
+
+  @Override
+  public final boolean isCurrentWindowSeekable() {
+    Timeline timeline = getCurrentTimeline();
+    return !timeline.isEmpty() && timeline.getWindow(getCurrentWindowIndex(), window).isSeekable;
+  }
+
+  @Override
+  public final long getContentDuration() {
+    Timeline timeline = getCurrentTimeline();
+    return timeline.isEmpty()
+        ? C.TIME_UNSET
+        : timeline.getWindow(getCurrentWindowIndex(), window).getDurationMs();
+  }
+
+  @RepeatMode
+  private int getRepeatModeForNavigation() {
+    @RepeatMode int repeatMode = getRepeatMode();
+    return repeatMode == REPEAT_MODE_ONE ? REPEAT_MODE_OFF : repeatMode;
+  }
+
+  /** Holds a listener reference. */
+  protected static final class ListenerHolder {
+
+    /**
+     * The listener on which {link #invoke} will execute {@link ListenerInvocation listener
+     * invocations}.
+     */
+    public final Player.EventListener listener;
+
+    private boolean released;
+
+    public ListenerHolder(Player.EventListener listener) {
+      this.listener = listener;
+    }
+
+    /** Prevents any further {@link ListenerInvocation} to be executed on {@link #listener}. */
+    public void release() {
+      released = true;
+    }
+
+    /**
+     * Executes the given {@link ListenerInvocation} on {@link #listener}. Does nothing if {@link
+     * #release} has been called on this instance.
+     */
+    public void invoke(ListenerInvocation listenerInvocation) {
+      if (!released) {
+        listenerInvocation.invokeListener(listener);
+      }
+    }
+
+    @Override
+    public boolean equals(@Nullable Object other) {
+      if (this == other) {
+        return true;
+      }
+      if (other == null || getClass() != other.getClass()) {
+        return false;
+      }
+      return listener.equals(((ListenerHolder) other).listener);
+    }
+
+    @Override
+    public int hashCode() {
+      return listener.hashCode();
+    }
+  }
+
+  /** Parameterized invocation of a {@link Player.EventListener} method. */
+  protected interface ListenerInvocation {
+
+    /** Executes the invocation on the given {@link Player.EventListener}. */
+    void invokeListener(Player.EventListener listener);
+  }
+}