Merge "Remove obsoleted code: VideoPlayer"

src/com/android/settings/accessibility/VideoPlayer.java

@@ -1,156 +0,0 @@
-/*
- * 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 com.android.settings.accessibility;
-
-import android.content.Context;
-import android.graphics.SurfaceTexture;
-import android.media.MediaPlayer;
-import android.view.Surface;
-import android.view.TextureView;
-import android.view.TextureView.SurfaceTextureListener;
-
-import androidx.annotation.GuardedBy;
-import androidx.annotation.RawRes;
-import androidx.annotation.VisibleForTesting;
-
-/**
- * Plays the video by {@link MediaPlayer} on {@link TextureView}, calls {@link #create(Context, int,
- * TextureView)} to setup the listener for TextureView and start to play the video. Once this player
- * is no longer used, call {@link #release()} so that MediaPlayer object can be released.
- */
-public class VideoPlayer implements SurfaceTextureListener {
-    private final Context mContext;
-    private final Object mMediaPlayerLock = new Object();
-    // Media player object can't be used after it has been released, so it will be set to null. But
-    // VideoPlayer is asynchronized, media player object might be paused or resumed again before
-    // released media player is set to null. Therefore, lock mediaPlayer and mediaPlayerState by
-    // mediaPlayerLock keep their states consistent.
-    @VisibleForTesting
-    @GuardedBy("mediaPlayerLock")
-    MediaPlayer mMediaPlayer;
-
-    @VisibleForTesting
-    @GuardedBy("mediaPlayerLock")
-    State mMediaPlayerState = State.NONE;
-
-    @RawRes
-    private final int mVideoRes;
-
-    @VisibleForTesting
-    Surface mAnimationSurface;
-
-
-    /**
-     * Creates a {@link MediaPlayer} for a given resource id and starts playback when the surface
-     * for
-     * a given {@link TextureView} is ready.
-     */
-    public static VideoPlayer create(Context context, @RawRes int videoRes,
-            TextureView textureView) {
-        return new VideoPlayer(context, videoRes, textureView);
-    }
-
-    private VideoPlayer(Context context, @RawRes int videoRes, TextureView textureView) {
-        this.mContext = context;
-        this.mVideoRes = videoRes;
-        textureView.setSurfaceTextureListener(this);
-    }
-
-    public void pause() {
-        synchronized (mMediaPlayerLock) {
-            if (mMediaPlayerState == State.STARTED) {
-                mMediaPlayerState = State.PAUSED;
-                mMediaPlayer.pause();
-            }
-        }
-    }
-
-    public void resume() {
-        synchronized (mMediaPlayerLock) {
-            if (mMediaPlayerState == State.PAUSED) {
-                mMediaPlayer.start();
-                mMediaPlayerState = State.STARTED;
-            }
-        }
-    }
-
-    /** Release media player when it's no longer needed. */
-    public void release() {
-        synchronized (mMediaPlayerLock) {
-            if (mMediaPlayerState != State.NONE && mMediaPlayerState != State.END) {
-                mMediaPlayerState = State.END;
-                mMediaPlayer.release();
-                mMediaPlayer = null;
-            }
-        }
-        if (mAnimationSurface != null) {
-            mAnimationSurface.release();
-            mAnimationSurface = null;
-        }
-    }
-
-    @Override
-    public void onSurfaceTextureAvailable(SurfaceTexture surface, int width, int height) {
-        mAnimationSurface = new Surface(surface);
-        synchronized (mMediaPlayerLock) {
-            mMediaPlayer = MediaPlayer.create(mContext, mVideoRes);
-            mMediaPlayerState = State.PREPARED;
-            mMediaPlayer.setSurface(mAnimationSurface);
-            mMediaPlayer.setLooping(true);
-            mMediaPlayer.start();
-            mMediaPlayerState = State.STARTED;
-        }
-    }
-
-    @Override
-    public void onSurfaceTextureSizeChanged(SurfaceTexture surface, int width, int height) {
-    }
-
-    @Override
-    public boolean onSurfaceTextureDestroyed(SurfaceTexture surface) {
-        release();
-        return false;
-    }
-
-    @Override
-    public void onSurfaceTextureUpdated(SurfaceTexture surface) {
-    }
-
-    /**
-     * The state of MediaPlayer object. Refer to
-     * https://developer.android.com/reference/android/media/MediaPlayer#StateDiagram.
-     */
-    public enum State {
-        /** MediaPlayer objects has not be created. */
-        NONE,
-        /** MediaPlayer objects is created by create() method. */
-        PREPARED,
-        /** MediaPlayer is started. It can be paused by pause() method. */
-        STARTED,
-        /** MediaPlayer object is paused. Calling start() to resume it. */
-        PAUSED,
-        /**
-         * MediaPlayer object is stopped and cannot be started until calling prepare() or
-         * prepareAsync()
-         * methods.
-         */
-        STOPPED,
-        /** MediaPlayer object is released. It cannot be used again. */
-        END
-    }
-}
-