1 files changed, 72 insertions, 0 deletions
diff --git a/android/media/MediaPlayerBase.java b/android/media/MediaPlayerBase.java
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+++ b/android/media/MediaPlayerBase.java
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+/*
+ * Copyright 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 android.media;
+
+import android.media.MediaSession2.PlaylistParam;
+import android.media.session.PlaybackState;
+import android.os.Handler;
+
+import java.util.List;
+import java.util.concurrent.Executor;
+
+/**
+ * Base interfaces for all media players that want media session.
+ *
+ * @hide
+ */
+public abstract class MediaPlayerBase {
+    /**
+     * Listens change in {@link PlaybackState2}.
+     */
+    public interface PlaybackListener {
+        /**
+         * Called when {@link PlaybackState2} for this player is changed.
+         */
+        void onPlaybackChanged(PlaybackState2 state);
+    }
+
+    public abstract void play();
+    public abstract void prepare();
+    public abstract void pause();
+    public abstract void stop();
+    public abstract void skipToPrevious();
+    public abstract void skipToNext();
+    public abstract void seekTo(long pos);
+    public abstract void fastFoward();
+    public abstract void rewind();
+
+    public abstract PlaybackState2 getPlaybackState();
+    public abstract AudioAttributes getAudioAttributes();
+
+    public abstract void setPlaylist(List<MediaItem2> item, PlaylistParam param);
+    public abstract void setCurrentPlaylistItem(int index);
+
+    /**
+     * Add a {@link PlaybackListener} to be invoked when the playback state is changed.
+     *
+     * @param executor the Handler that will receive the listener
+     * @param listener the listener that will be run
+     */
+    public abstract void addPlaybackListener(Executor executor, PlaybackListener listener);
+
+    /**
+     * Remove previously added {@link PlaybackListener}.
+     *
+     * @param listener the listener to be removed
+     */
+    public abstract void removePlaybackListener(PlaybackListener listener);
+}