使用Exoplayer 2.2的VOD缓存

Question

在使用exoplayer缓存视频/音频内容方面做了一些变通之后，我觉得Jacek在这里给出的答案是实现无限范围请求缓存的正确方法，而不是使用https://github.com/google/ExoPlayer/issues/420 & https://github.com/google/ExoPlayer/issues/57支持的内置Exocache。但是他没有说任何关于配置OkHttp和缓存请求的内容。

谁能给我提供一些关于如何配置okhttp和缓存请求的链接。

Answer 1

通过如下所示的buildDataSourceFactory配置更改，我们可以缓存视频内容

  private DataSource.Factory buildDataSourceFactory(final boolean useBandwidthMeter) {
//    return new DefaultDataSourceFactory(this, useBandwidthMeter ? BANDWIDTH_METER : null,
//        buildHttpDataSourceFactory(useBandwidthMeter));
    return new DataSource.Factory() {
      @Override
      public DataSource createDataSource() {
        LeastRecentlyUsedCacheEvictor evictor = new LeastRecentlyUsedCacheEvictor(100 * 1024 * 1024);
        SimpleCache simpleCache = new SimpleCache(new File(getCacheDir(), "media_cache"), evictor);
        return new CacheDataSource(simpleCache, buildMyDataSourceFactory(useBandwidthMeter).createDataSource(),
                CacheDataSource.FLAG_BLOCK_ON_CACHE | CacheDataSource.FLAG_CACHE_UNBOUNDED_REQUESTS,
                10 * 1024 * 1024);
      }
    };
  }

  private DefaultDataSource.Factory buildMyDataSourceFactory(boolean useBandwidthMeter) {
    return new DefaultDataSourceFactory(PlayerActivity.this, userAgent, useBandwidthMeter ? BANDWIDTH_METER : null);
  }