Startup failure/freeze when additional discontinuity tags in alternate audio/text tracks

Media3 Version

ExoPlayer 2.17.1

Devices that reproduce the issue

All devices

Devices that do not reproduce the issue

No response

Reproducible in the demo app?

No

Reproduction steps

Configure the player to disallow chunkless startup: setAllowChunklessPreparation(false)

Details
Media must contain a track that that has isMasterTimestampSource set to false during the preparation step and contains 1 or more additional #EXT-X-DISCONTINUITY tags before the first sample chunk.

This scenario causes the timestampAdjuster provided for that discontinuity sequence to be provided for only to a single track. That HlsMediaChunk is unable to initialize the timestampAdjuster causing the call : timestampAdjuster.sharedInitializeOrWait(isMasterTimestampSource, startTimeUs); to block loading until the timestampAdjuster initialization can be completed.

Since no other tracks contain the same discontinuity sequence and will not be provided with the same timestampAdjuster as the waiting HlsMediaChunk's - loading will never complete.

Expected result

Playback starts

Actual result

Playback is stuck in loading state

Media

https://storage.googleapis.com/mlbapp-streaming-resources/big_buck_bunny_disc/x36xhzz.m3u8

Bug Report

• You will email the zip file produced by adb bugreport to dev.exoplayer@gmail.com after filing this issue.