FLAC in mp4 typo in AtomParsers

[kgrevehagen]

[REQUIRED] Issue description

When trying to play FLAC in mp4, it goes through the AtomParsers.java and near the bottom in parseAudioSampleEntry() there is a check if childAtomSize == Atom.TYPE_dfLa. It seems like a typo and it should be childAtomType == Atom.TYPE_dfLa instead, just as all the others. This is where it sets the initializationData, so obviously this condition will never be hit.

[REQUIRED] Reproduction steps

Try to play a FLAC in mp4(e.g. using DASH) and observe that the initializationData in FlacDecoder is never set.

[REQUIRED] Link to test content

I don't have any testable content to send at the moment, but I can probably create a test file if you need it.

[REQUIRED] A full bug report captured from the device

N/A

[REQUIRED] Version of ExoPlayer being used

2.10.4

[REQUIRED] Device(s) and version(s) of Android being used

100% reproducible on Pixel 3 with Android 9

[andrewlewis]

Thanks for reporting! We will submit a fix.