HlsDownloader

@UnstableApi
class HlsDownloader : SegmentDownloader

SimpleCache cache = new SimpleCache(downloadFolder, new NoOpCacheEvictor(), databaseProvider);
CacheDataSource.Factory cacheDataSourceFactory =
    new CacheDataSource.Factory()
        .setCache(cache)
        .setUpstreamDataSourceFactory(new DefaultHttpDataSource.Factory());
// Create a downloader for the first variant in a multivariant playlist.
HlsDownloader hlsDownloader =
    new HlsDownloader.Factory(cacheDataSourceFactory)
           .create(new MediaItem.Builder()
            .setUri(playlistUri)
             .setStreamKeys(
                ImmutableList.of(
                   new StreamKey(HlsMultivariantPlaylist.GROUP_INDEX_VARIANT, 0)))
              .build());
// Perform the download.
hlsDownloader.download(progressListener);
// Use the downloaded data for playback.
HlsMediaSource mediaSource =
    new HlsMediaSource.Factory(cacheDataSourceFactory).createMediaSource(mediaItem);