[FFmpeg-devel] [PATCH] HE-AAC v1 decoder try 4

Alex Converse alex.converse
Thu Feb 25 01:36:53 CET 2010

On Tue, Feb 16, 2010 at 6:19 PM, Alex Converse <alex.converse at gmail.com> wrote:
> On Tue, Feb 16, 2010 at 6:01 PM, Alex Converse <alex.converse at gmail.com>
> wrote:
>> Notes:
>> *All the computation time is spent in ff_sbr_apply() and it's
>> children. If it isn't called from ff_sbr_apply() making it 100% faster
>> isn't going to buy us anything.
>> *Right now the synthesis filterbank is written on top on an MDCT. With
>> appropriate SIMD functions it may make sense to move it to an FFT.
>> Right now the MDCT version is much faster.
>> *SIMD placeholder patch not included
> Wrong patch.
> try 4.1 :)

Since the last patch I beat on the decoder with the zzuf hammer and
fixed a few minor things as well as addressing the feeback I've seen
in this thread.

So I'm trying to figure out where we stand on this:
*Does the ffplay issue block this?
*Is the filterbank blocking this?
*Is anybody interested in playing with the filterbank. If so I can
give you pages. It's very self contained.
*Were there any other major concerns I missed?

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