Commits on Jun 13, 2024

1. Fixes early transiton to Player.STATE_ENDED with MPD transition dyn… …

   …amic to static
   
   This checkin fixes Issue androidx#1441 where the player transitons to `Player.STATE_ENDED` once
   the buffer runs out on a DASH start-over playlist that has transitioned from dynamic to static.
   
   The fix detects the DASH Period has changed offset to the window, which occurs when the
   origin vendor follows the DASH-IF recommendations in
   *Section 4.6.4. Transition Phase between Live and On-Demand* ,  summerized as:
   
   -	adds the attribute `MPD@mediaPresentationDuration`
   -	removes the attribute `MPD@minimumUpdatePeriod`
   -	`Period@start` is removed (if it was present)
   -	`Period@duration` is added (in case more than 1 period is present)
   -	`Adaptationset .SegmentTemplate@presentationTimeOffset` is set to earliest presentation time of a segment in the Adaptationset
   
   The MPD change does not affect the render position or the segment timeline at all, however
   the cleanest way to implement this was to report a `PositionUpdateForPlaylistChange`
   which triggers a seek and flushes the current buffered content.

   

   stevemayhew committed Jun 13, 2024
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