1 /*
2  * Copyright (C) 2017 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 package com.android.wallpaper.asset;
17 
18 import com.android.wallpaper.asset.ResourceAssetLoader.ResourceAssetFetcher;
19 
20 import com.bumptech.glide.load.Options;
21 import com.bumptech.glide.load.model.ModelLoader;
22 import com.bumptech.glide.load.model.ModelLoaderFactory;
23 import com.bumptech.glide.load.model.MultiModelLoaderFactory;
24 
25 import java.io.InputStream;
26 
27 import androidx.annotation.Nullable;
28 
29 /**
30  * Glide ModelLoader which loads InputStreams from NexusStaticAssets.
31  */
32 public class NexusStaticAssetLoader implements ModelLoader<NexusStaticAsset, InputStream> {
33 
34     @Override
handles(NexusStaticAsset nexusStaticAsset)35     public boolean handles(NexusStaticAsset nexusStaticAsset) {
36         return true;
37     }
38 
39     @Nullable
40     @Override
buildLoadData(NexusStaticAsset nexusStaticAsset, int unusedWidth, int unusedHeight, Options options)41     public LoadData<InputStream> buildLoadData(NexusStaticAsset nexusStaticAsset, int unusedWidth,
42                                                int unusedHeight, Options options) {
43         return new LoadData<>(nexusStaticAsset.getKey(), new ResourceAssetFetcher(nexusStaticAsset));
44     }
45 
46     /**
47      * Factory that constructs {@link NexusStaticAssetLoader} instances.
48      */
49     public static class NexusStaticAssetLoaderFactory
50             implements ModelLoaderFactory<NexusStaticAsset, InputStream> {
NexusStaticAssetLoaderFactory()51         public NexusStaticAssetLoaderFactory() {
52         }
53 
54         @Override
build(MultiModelLoaderFactory multiFactory)55         public ModelLoader<NexusStaticAsset, InputStream> build(MultiModelLoaderFactory multiFactory) {
56             return new NexusStaticAssetLoader();
57         }
58 
59         @Override
teardown()60         public void teardown() {
61             // no-op
62         }
63     }
64 }
65