1 /* 2 * Copyright (C) 2015 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.fingerprint; 18 19 import android.content.ContentResolver; 20 import android.content.Context; 21 import android.content.res.Resources; 22 import android.graphics.SurfaceTexture; 23 import android.media.MediaPlayer; 24 import android.media.MediaPlayer.OnInfoListener; 25 import android.media.MediaPlayer.OnPreparedListener; 26 import android.net.Uri; 27 import android.util.AttributeSet; 28 import android.view.Surface; 29 import android.view.TextureView; 30 import android.view.View; 31 32 import com.android.settings.R; 33 34 /** 35 * A view containing a VideoView for showing the user how to enroll a fingerprint 36 */ 37 public class FingerprintLocationAnimationVideoView extends TextureView 38 implements FingerprintFindSensorAnimation { 39 protected float mAspect = 1.0f; // initial guess until we know 40 protected MediaPlayer mMediaPlayer; 41 FingerprintLocationAnimationVideoView(Context context, AttributeSet attrs)42 public FingerprintLocationAnimationVideoView(Context context, AttributeSet attrs) { 43 super(context, attrs); 44 } 45 46 @Override onMeasure(int widthMeasureSpec, int heightMeasureSpec)47 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 48 // Width is driven by measurespec, height is derrived from aspect ratio 49 int originalWidth = MeasureSpec.getSize(widthMeasureSpec); 50 int height = Math.round(mAspect * originalWidth); 51 super.onMeasure(widthMeasureSpec, MeasureSpec.makeMeasureSpec(height, MeasureSpec.EXACTLY)); 52 } 53 getFingerprintLocationAnimation()54 protected Uri getFingerprintLocationAnimation() { 55 return resourceEntryToUri(getContext(), R.raw.fingerprint_location_animation); 56 } 57 58 @Override onFinishInflate()59 protected void onFinishInflate() { 60 super.onFinishInflate(); 61 setSurfaceTextureListener(new SurfaceTextureListener() { 62 private SurfaceTexture mTextureToDestroy = null; 63 64 @Override 65 public void onSurfaceTextureAvailable(SurfaceTexture surfaceTexture, int width, 66 int height) { 67 setVisibility(View.INVISIBLE); 68 Uri videoUri = getFingerprintLocationAnimation(); 69 if (mMediaPlayer != null) { 70 mMediaPlayer.release(); 71 } 72 if (mTextureToDestroy != null) { 73 mTextureToDestroy.release(); 74 mTextureToDestroy = null; 75 } 76 mMediaPlayer = MediaPlayer.create(mContext, videoUri); 77 mMediaPlayer.setSurface(new Surface(surfaceTexture)); 78 mMediaPlayer.setOnPreparedListener(new OnPreparedListener() { 79 @Override 80 public void onPrepared(MediaPlayer mediaPlayer) { 81 mediaPlayer.setLooping(true); 82 } 83 }); 84 mMediaPlayer.setOnInfoListener(new OnInfoListener() { 85 @Override 86 public boolean onInfo(MediaPlayer mediaPlayer, int what, int extra) { 87 if (what == MediaPlayer.MEDIA_INFO_VIDEO_RENDERING_START) { 88 // Keep the view hidden until video starts 89 setVisibility(View.VISIBLE); 90 } 91 return false; 92 } 93 }); 94 mAspect = (float) mMediaPlayer.getVideoHeight() / mMediaPlayer.getVideoWidth(); 95 requestLayout(); 96 startAnimation(); 97 } 98 99 @Override 100 public void onSurfaceTextureSizeChanged(SurfaceTexture surfaceTexture, 101 int width, int height) { 102 } 103 104 @Override 105 public boolean onSurfaceTextureDestroyed(SurfaceTexture surfaceTexture) { 106 mTextureToDestroy = surfaceTexture; 107 return false; 108 } 109 110 @Override 111 public void onSurfaceTextureUpdated(SurfaceTexture surfaceTexture) { 112 } 113 }); 114 } 115 resourceEntryToUri(Context context, int id)116 protected static Uri resourceEntryToUri (Context context, int id) { 117 Resources res = context.getResources(); 118 return Uri.parse(ContentResolver.SCHEME_ANDROID_RESOURCE + "://" + 119 res.getResourcePackageName(id) + '/' + 120 res.getResourceTypeName(id) + '/' + 121 res.getResourceEntryName(id)); 122 } 123 124 @Override startAnimation()125 public void startAnimation() { 126 if (mMediaPlayer != null && !mMediaPlayer.isPlaying()) { 127 mMediaPlayer.start(); 128 } 129 } 130 131 @Override stopAnimation()132 public void stopAnimation() { 133 if (mMediaPlayer != null) { 134 mMediaPlayer.stop(); 135 mMediaPlayer.release(); 136 mMediaPlayer = null; 137 } 138 } 139 140 @Override pauseAnimation()141 public void pauseAnimation() { 142 if (mMediaPlayer != null && mMediaPlayer.isPlaying()) { 143 mMediaPlayer.pause(); 144 } 145 } 146 147 } 148