HLS: allow pause/resume in the middle of a segment
- when down switching, decide whether to finish current segment
based on bandwidth settings, abort current segment if needed.
- when switching, pause new fetcher after the first 47K chunk,
and go back to resume old fethcer to stop point immediately.
- when old fetcher reaches stop point, swap packet sources and
resume new fetcher.
- mark switching as done as soon as old fecther reaches stop
point. This allows us to resume bandwidth monitoring earlier,
and do subsequent switches sooner.
bug: 19567254
Change-Id: Iba4b5fb9b06541bb1e49592536648f5d4cbc69ab
7 files changed