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      1 /*
      2  * Copyright (C) 2016 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.settings.widget;
     18 
     19 import android.content.ContentResolver;
     20 import android.content.Context;
     21 import android.content.res.TypedArray;
     22 import android.graphics.SurfaceTexture;
     23 import android.media.MediaPlayer;
     24 import android.net.Uri;
     25 import android.support.v7.preference.Preference;
     26 import android.support.v7.preference.PreferenceViewHolder;
     27 import android.util.AttributeSet;
     28 import android.util.Log;
     29 import android.view.Surface;
     30 import android.view.TextureView;
     31 import android.view.View;
     32 import android.widget.ImageView;
     33 
     34 import com.android.settings.R;
     35 
     36 /**
     37  * A full width preference that hosts a MP4 video.
     38  */
     39 public class VideoPreference extends Preference {
     40 
     41     private static final String TAG = "VideoPreference";
     42     private final Context mContext;
     43 
     44     private Uri mVideoPath;
     45     private MediaPlayer mMediaPlayer;
     46     private boolean mAnimationAvailable;
     47     private boolean mVideoReady;
     48     private boolean mVideoPaused;
     49     private int mPreviewResource;
     50 
     51     public VideoPreference(Context context, AttributeSet attrs) {
     52         super(context, attrs);
     53         mContext = context;
     54         TypedArray attributes = context.getTheme().obtainStyledAttributes(
     55                 attrs,
     56                 com.android.settings.R.styleable.VideoPreference,
     57                 0, 0);
     58         try {
     59             int animation = attributes.getResourceId(R.styleable.VideoPreference_animation, 0);
     60             mVideoPath = new Uri.Builder().scheme(ContentResolver.SCHEME_ANDROID_RESOURCE)
     61                     .authority(context.getPackageName())
     62                     .appendPath(String.valueOf(animation))
     63                     .build();
     64             mMediaPlayer = MediaPlayer.create(mContext, mVideoPath);
     65             if (mMediaPlayer != null && mMediaPlayer.getDuration() > 0) {
     66                 setVisible(true);
     67                 setLayoutResource(R.layout.video_preference);
     68 
     69                 mPreviewResource = attributes.getResourceId(
     70                         R.styleable.VideoPreference_preview, 0);
     71 
     72                 mMediaPlayer.setOnSeekCompleteListener(mp -> mVideoReady = true);
     73 
     74                 mMediaPlayer.setOnPreparedListener(mediaPlayer -> mediaPlayer.setLooping(true));
     75                 mAnimationAvailable = true;
     76             } else {
     77                 setVisible(false);
     78             }
     79         } catch (Exception e) {
     80             Log.w(TAG, "Animation resource not found. Will not show animation.");
     81         } finally {
     82             attributes.recycle();
     83         }
     84     }
     85 
     86     @Override
     87     public void onBindViewHolder(PreferenceViewHolder holder) {
     88         super.onBindViewHolder(holder);
     89 
     90         if (!mAnimationAvailable) {
     91             return;
     92         }
     93 
     94         final TextureView video = (TextureView) holder.findViewById(R.id.video_texture_view);
     95         final ImageView imageView = (ImageView) holder.findViewById(R.id.video_preview_image);
     96         final ImageView playButton = (ImageView) holder.findViewById(R.id.video_play_button);
     97         imageView.setImageResource(mPreviewResource);
     98 
     99         video.setOnClickListener(v -> {
    100             if (mMediaPlayer != null) {
    101                 if (mMediaPlayer.isPlaying()) {
    102                     mMediaPlayer.pause();
    103                     playButton.setVisibility(View.VISIBLE);
    104                     mVideoPaused = true;
    105                 } else {
    106                     mMediaPlayer.start();
    107                     playButton.setVisibility(View.GONE);
    108                     mVideoPaused = false;
    109                 }
    110             }
    111         });
    112 
    113         video.setSurfaceTextureListener(new TextureView.SurfaceTextureListener() {
    114             @Override
    115             public void onSurfaceTextureAvailable(SurfaceTexture surfaceTexture, int width,
    116                     int height) {
    117                 if (mMediaPlayer != null) {
    118                     mMediaPlayer.setSurface(new Surface(surfaceTexture));
    119                     mVideoReady = false;
    120                     mMediaPlayer.seekTo(0);
    121                 }
    122             }
    123 
    124             @Override
    125             public void onSurfaceTextureSizeChanged(SurfaceTexture surfaceTexture, int width,
    126                     int height) {
    127             }
    128 
    129             @Override
    130             public boolean onSurfaceTextureDestroyed(SurfaceTexture surfaceTexture) {
    131                 imageView.setVisibility(View.VISIBLE);
    132                 return false;
    133             }
    134 
    135             @Override
    136             public void onSurfaceTextureUpdated(SurfaceTexture surfaceTexture) {
    137                 if (mVideoReady) {
    138                     if (imageView.getVisibility() == View.VISIBLE) {
    139                         imageView.setVisibility(View.GONE);
    140                     }
    141                     if (!mVideoPaused && mMediaPlayer != null && !mMediaPlayer.isPlaying()) {
    142                         mMediaPlayer.start();
    143                         playButton.setVisibility(View.GONE);
    144                     }
    145                 }
    146                 if (mMediaPlayer != null && !mMediaPlayer.isPlaying() &&
    147                         playButton.getVisibility() != View.VISIBLE) {
    148                     playButton.setVisibility(View.VISIBLE);
    149                 }
    150             }
    151         });
    152     }
    153 
    154     @Override
    155     public void onDetached() {
    156         if (mMediaPlayer != null) {
    157             mMediaPlayer.stop();
    158             mMediaPlayer.reset();
    159             mMediaPlayer.release();
    160         }
    161         super.onDetached();
    162     }
    163 
    164     public void onViewVisible(boolean videoPaused) {
    165         mVideoPaused = videoPaused;
    166         if (mVideoReady && mMediaPlayer != null && !mMediaPlayer.isPlaying()) {
    167             mMediaPlayer.seekTo(0);
    168         }
    169     }
    170 
    171     public void onViewInvisible() {
    172         if (mMediaPlayer != null && mMediaPlayer.isPlaying()) {
    173             mMediaPlayer.pause();
    174         }
    175     }
    176 
    177     public boolean isVideoPaused() {
    178         return mVideoPaused;
    179     }
    180 
    181 }
    182