You make a good point about the linear flow that's typical in media players. I haven't looked at the VLC source, so I'm not sure about how it's structured. With

You make a good point about the linear flow that's typical in media players. I haven't looked at the VLC source, so I'm not sure about how it's structured. With 7M LOC, I'm guessing that there might be some entanglements. The async model causes the async pattern to propagate all the way up the call chain. The I/O and other async dependencies would have to be decoupled from the gcc library to minimize impact on the existing code base.