Let's say we want to add a VU meter to the FilterDemo audiounit v3, what is the good practice to retrieve the audio buffer in the view? I'm only intersted in that not on how to design the VU meter itself.
Fo sure most of the code should be in the view and not in the kernel or AudioUnit, but I don't understand how to retrieve from the view the buffer populated in the audio unit itself (AUInternalRenderBlock). Should I use KVO on outputBus? But how to get the buffer itself :s Thanks in advance