GifFrameModelLoader.java revision 5ba19a0e69ad3a651b8f13ba45de48a56b56ce36 
1package com.bumptech.glide.load.resource.gif;
2
3import com.bumptech.glide.Priority;
4import com.bumptech.glide.gifdecoder.GifDecoder;
5import com.bumptech.glide.load.data.DataFetcher;
6import com.bumptech.glide.load.model.ModelLoader;
7
8class GifFrameModelLoader implements ModelLoader<GifDecoder, GifDecoder> {
9
10    @Override
11    public DataFetcher<GifDecoder> getResourceFetcher(GifDecoder model, int width, int height) {
12        return new GifFrameDataFetcher(model);
13    }
14
15    private static class GifFrameDataFetcher implements DataFetcher<GifDecoder> {
16        private final GifDecoder decoder;
17
18        public GifFrameDataFetcher(GifDecoder decoder) {
19            this.decoder = decoder;
20        }
21
22        @Override
23        public GifDecoder loadData(Priority priority) {
24            return decoder;
25        }
26
27        @Override
28        public void cleanup() {
29            // Do nothing. GifDecoder reads from an arbitrary InputStream, the caller will close that stream.
30        }
31
32        @Override
33        public String getId() {
34            return decoder.getId() + decoder.getCurrentFrameIndex();
35        }
36
37        @Override
38        public void cancel() {
39            // Do nothing.
40        }
41    }
42}
43