DASH periods can have a duration that is less than the end of the
last chunk in the period. In these cases, the sample data needs to
be clipped to the declared period duration. This already happens
IF the period duration is known at the point where we start loading
the media chunk. However, if the duration becomes known later or is
reduced (e.g. in a live stream), the existing media chunks are not
clipped. This causes unclean transitions across periods where the
player tries to transition to the next period, but renderers struggle
to output all the remaining surplus samples that should have been
clipped.
This can be fixed by asking ChunkSampleStream to discard surplus
samples that were loaded beyond a clipped duration when evaluating
the sample queue between chunk loads.
Issue: androidx/media#1698
PiperOrigin-RevId: 713288221
b321c8d3bd