I would have thought that something like that would have been all offloaded to hardware or in a weird DSP assembly (Like how Qualcomm have their newer aptx code

I would have thought that something like that would have been all offloaded to hardware or in a weird DSP assembly (Like how Qualcomm have their newer aptx codecs as Hexagon DSP code), but I see a LDAC decoder as a regular ARM object in there. Good luck to you I guess.