media Multi period content support for AdsMediaSource

Multi period DASH content ads support inspired by https://github.com/androidx/media/issues/1642#issuecomment-2772077256 At Timeline level, the original AdPlaybackState is divided and adjusted for each of the periods.

Removing single period assertions from AdsMediaSource. Providing MultiPeriodAdTimeline as an alternative to current SinglePeriodAdTimeline. From input AdPlaybackState, new modified AdPlaybackState is created - one for each period:

ad group time is offset relative to period start time
ad groups after period end time are marked as skipped
post-roll ad group is kept only for last period
ad group count and indices are kept constant

Jun 04 '25 07:06 kotucz

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Jun 04 '25 07:06 google-cla[bot]

Please sign the CLA, then we can take a look at this PR

Jun 04 '25 11:06 icbaker

Company CLA should be used. It is in progress

Jun 10 '25 12:06 kotucz

CLA updated and PR rebased

Aug 22 '25 10:08 kotucz

@marcbaechinger when can we expect some feedback on this PR, please?

We have also identified one edge case, with timeline not being updated properly. What would be the best way to raise the fix? Creating new issue/PR or putting all together in this one? It is more complicated scenario with more fix options

Sep 15 '25 12:09 kotucz