[vlc-devel] [RFC v2 0/3] let VLC decode more than 9 audio channels

[Rémi Denis-Courmont]

Le 2015-10-12 19:02, Emeric Grange a écrit :
> - I set the new limit to 18 channels (to match with
> WAVEFORMATEXTENSIBLE structure)
> but why not push it directly to 32?

Beyond 9, you need to fix quite a few code existing paths that need to 
know all channels. Beyond 15 or 16, you also potentially need to fix 
code using 16-bits integers to represent the mask. Beyond 28 or 29, you 
need to replace the 3 existing flags with something else.

Strictly, speaking you could go directly to 64-bits (or 61-bits 
retaining the flags). The more bits the more work though.

-- 
Rémi Denis-Courmont
http://www.remlab.net/