ibaker 5211ff0dc1 Only append non-null exception messages in UnexpectedLoaderException
The previous code led me to misread this stack trace as a null pointer
exception, but it's really an index out of bounds exception:

```
Caused by: androidx.media3.exoplayer.upstream.Loader$UnexpectedLoaderException: Unexpected IllegalArgumentException: null
  at androidx.media3.exoplayer.upstream.Loader$LoadTask.run(Loader.java:435)
  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:644)
  at java.lang.Thread.run(Thread.java:1012)
Caused by: java.lang.IllegalArgumentException
  at androidx.media3.common.util.Assertions.checkArgument(Assertions.java:40)
  at androidx.media3.common.util.ParsableByteArray.setPosition(ParsableByteArray.java:164)
  at androidx.media3.extractor.text.cea.Cea608Parser.parse(Cea608Parser.java:440)
```

PiperOrigin-RevId: 592876546
2023-12-21 09:09:41 -08:00
..

ExoPlayer module

This module provides ExoPlayer, the Player implementation for local media playback on Android.

Getting the module

The easiest way to get the module is to add it as a gradle dependency:

implementation 'androidx.media3:media3-exoplayer:1.X.X'

where 1.X.X is the version, which must match the version of the other media modules being used.

Alternatively, you can clone this GitHub project and depend on the module locally. Instructions for doing this can be found in the top level README.