ExoPlayer缓存 [英] ExoPlayer cache

问题描述

我正在准备使用ExoPlayer通过http播放视频.我想在视频加载后保存视频并从缓存中播放.如何实现缓存和从缓存中回放?可以给我任何样品.

I'm traying to use ExoPlayer for playback video over http. And I want to save video after video was loaded and play it from cache. How Do implement cache and playback from cache? Can give me any samples.

推荐答案

您使用使用cache和dataSource创建的cacheDataSource.然后，ExtractorSampleSource使用该cacheDataSource.下面是audioRenderer的代码，类似地，也可以对videoRender执行此操作.传递给exoplayerInstance.prepare(renderers).

You use cacheDataSource created using cache and dataSource. This cacheDataSource is then used by ExtractorSampleSource.Below is the code for audioRenderer, similarly can be done for videoRender; passing to 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);

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