Oliver Woodman 759431048d Treat "no chunk to load yet" in the same way as finished.
The key change here is that nextLoadPositionUs is set to -1
if we're not loading but don't have a next chunk ready to
load. This ensures that "missing chunks" in one stream don't
prevent chunks in another stream from loading. This occurs
in SmoothStreaming with TTML subtitles, where the chunks are
sparse.
2014-10-09 17:27:20 +01:00
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