1 /* 2 * Copyright (C) 2013 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.photos.drawables; 18 19 import android.media.ExifInterface; 20 import android.text.TextUtils; 21 22 import java.io.FileInputStream; 23 import java.io.FileNotFoundException; 24 import java.io.IOException; 25 import java.io.InputStream; 26 27 public class DataUriThumbnailDrawable extends AutoThumbnailDrawable<String> { 28 29 @Override 30 protected byte[] getPreferredImageBytes(String data) { 31 byte[] thumbnail = null; 32 try { 33 ExifInterface exif = new ExifInterface(data); 34 if (exif.hasThumbnail()) { 35 thumbnail = exif.getThumbnail(); 36 } 37 } catch (IOException e) { } 38 return thumbnail; 39 } 40 41 @Override 42 protected InputStream getFallbackImageStream(String data) { 43 try { 44 return new FileInputStream(data); 45 } catch (FileNotFoundException e) { 46 return null; 47 } 48 } 49 50 @Override 51 protected boolean dataChangedLocked(String data) { 52 return !TextUtils.equals(mData, data); 53 } 54 } 55
