tonihei bc9fb8615e Use correct period-window offset for initial prepare position.
MaskingMediaSource needs to resolve the prepare position set for a MaskingPeriod
while the source was still unprepared to the first actual prepare position.

It currently assumes that the period-window offset and the default position is
zero. This assumption is correct when a PlaceholderTimeline is used, but it
may not be true if the real timeline is already known (e.g. when re-preparing
a live stream after a playback error).

Fix this by using the known timeline at the time of the preparation.
Also:
 - Update a test that should have caught this to use lazy re-preparation.
 - Change the demo app code to use the recommended way to restart playback
   after a BehindLiveWindowException.

Issue: #8675
PiperOrigin-RevId: 361604191
2021-03-12 10:40:15 +00:00
..

ExoPlayer main demo

This is the main ExoPlayer demo application. It uses ExoPlayer to play a number of test streams. It can be used as a starting point or reference project when developing other applications that make use of the ExoPlayer library.

Please see the demos README for instructions on how to build and run this demo.