HLS: bandwidth estimator changes
- separate bandwidth estimator from HTTPBase, so that we have
better control on which samples to use, it also allows bandiwdth
history across multiple HTTPBase objects (which we'll use later).
- use min buffer duration among the streams to decide whether to
download next segment.
- maintain constant buffer level, time next download to happen
when buffer just goes below kMinBufferedDurationUs.
bug: 19567254
Change-Id: I5c481ad1f7ff3f084d57ec68856e12ae6b40ce41
3 files changed