[MPlayer-dev-eng] [PATCH] [TEST FUNC] Multi-channel reorder function

[Ulion]

Hello,

This is a reply to a post one year before:
http://lists.mplayerhq.hu/pipermail/mplayer-dev-eng/2006-November/047404.html

We have this channel layout problem (different channel order between
ad,ae,ao) for multi-channel audio for quite a long time. I'd like to
push this forward and try to resolve the problem in some way.

Reimar Döffinger wrote:
> On Tue, Nov 14, 2006 at 04:27:59PM -0800, Corey Hickey wrote:
> > I don't know if it can be simplified. I see a couple things that could
> > be different, but not necessarily better. In any case, the complexity of
> > (a) is centralized, versus being distributed into many separate files
> > (and only slightly lessened in most cases). Adding support to an
> > ad/ae/ao is much easier with my approach.
>
> well, the complexity maybe centralized with the af approach, but it is
> also far away from the real problem, probably making it even harder to
> make a real fix.
> I don't know. I think I mostly dislike inserting a filter, and that the
> fix seems so far away from the problem. I wonder how complicated it
> would be to instead create a reorder function that the ao/ad/aes can
> use. Or at least in some other was encapsulate that new code in a
> separate function instead of being "hidden" deep in the bowels of filter
> chain creation.
>
> Greetings,
> Reimar Döffinger
>

I wrote such a reorder function that the ao/ad/aes can use it to
reorder channels with an optimized speed (the copy func is about
1.5-1.6 times of memcpy on my PPC). By now the function can used to
replace memcpy for 5/6 channel audios. Also another reorder function
work on one buffer is also here.

This patch is just to show the idea, could be buggy and ugly, maybe
disliked by somebodies, it's ok, I just want to fix the aac wrong
channel order bug, wellcome any idea to resolve the problem. Shall we
end this bug in the near future by either way?


-- 
Ulion
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