a16c0b3068
We add an entire class like we do for parsing other codec initialization formats; it's currently not doing any parsing though (... initialization data is really simple for AV1 though: just the entire contents of the box). For testing, we add the sample file, having been re-encoded with ffmpeg (and we also happen to have another av1 file, too). PiperOrigin-RevId: 444890282
Test data module
Provides sample data for media unit and instrumentation tests.