Forums - The Amigans website

Re: Porting to AmigaOS4 thread

Subject: Re: Porting to AmigaOS4 thread
by Raziel on 2019/5/22 21:55:25

@Capehill

I did a port of liba52 which can decode AC3 or Dolby Digital audio/video.
While i know that this eats *a lot* of cpu power (even though liba52 is built to be fast) i'm a little disappointed on it's performance in ScummVM (there is one game for now that uses it to display alternate videos/sound).

The video/sound plays, but with dropouts and slowdowns, so i asked for help on the ScummVM forums.
They pointed me towards doing a profiling of the game in question and see where the slowdown comes from, liba52 (bad luck, nothing can be done about it, apart from gfx hardware rendering, i assume) or within the ScummVM code (which "could" be solved, or at least enhanced, probably).

Since i have never done any profiling i wanted to try it, but alas, i'm stuck.