Handling custom encoding values in default AudioTrackAudioOuput and DefaultAudioSink

For some devices I need to use private custom encoding values unfortunately some things are private or final.

So 2 small questions:

1. In defaultAudioSink maybeRampUpVolume only check that the mime is RAW but not the actual encoding like it's done in AudioTrackAudioOutput constructor (I my case it not actual PCM so it should not applied)

2. In AudioTrackAudioOutput constructor, in that case the isPCM only check the encoding and so is not used while I would still need to be able to pass a proper pcmFrameSize.

I can workaround with a custom sink, but maybe there's something I'm missing to fix those 2 cases ?