android - ExoPlayer缓存

Question

我打算使用 ExoPlayer 通过 http 播放视频。我想在加载视频后保存视频并从缓存中播放。如何实现缓存和从缓存中播放？可以给我任何 sample 。

Answer 1

您使用使用缓存和数据源创建的缓存数据源。然后这个 cacheDataSource 被 ExtractorSampleSource 使用。下面是 audioRenderer 的代码，videoRender 也可以这样做；传递给 exoplayerInstance.prepare(renderers)。

Cache cache = new SimpleCache(mCtx.getCacheDir(), new LeastRecentlyUsedCacheEvictor(1024 * 1024 * 10));
DataSource dataSource = new DefaultUriDataSource(mCtx, "My Player");
CacheDataSource cacheDataSource = new CacheDataSource(cache, dataSource, false, false);
Allocator allocator = new DefaultAllocator(BUFFER_SEGMENT_SIZE);
ExtractorSampleSource extractorSampleSource = new ExtractorSampleSource(trackURI, cacheDataSource, allocator, BUFFER_SEGMENT_COUNT*BUFFER_SEGMENT_SIZE, new Mp3Extractor());
MediaCodecAudioTrackRenderer audioTrackRenderer = new MediaCodecAudioTrackRenderer(extractorSampleSource);