[FFmpeg-devel] [PATCH 0/5][RFC] Speed up AAC decoder

Robert Swain robert.swain
Wed Jan 13 17:03:18 CET 2010

On 13/01/10 15:15, M?ns Rullg?rd wrote:
> Mans Rullgard<mans at mansr.com>  writes:
>> This patch series speeds up the AAC decoder by 25-50% on Cortex-A8 and
>> by 20-30% on Core i7.
>> Some of the more obscure parts certainly need a few comments, which I
>> will add if there are no objections to this approach.
>> Mans Rullgard (5):
>>    AAC: use table for cbrtf(n)*n
>>    AAC: Compress codebook tables and optimise sign bit handling
>>    AAC: simplify some calculations in decode_spectrum_and_dequant()
>>    AAC: Unswitch loop over window groups in decode_spectrum_and_dequant()
>>    AAC: Reduce depth of vlc_spectral tables to 2
> Any further comments on this?

As the changes pass the compliance tests and I don't have any more 
comments on the code itself, you have the green light to commit from me.


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