[FFmpeg-devel] [PATCH] NEON FFT/IMDCT
Tue Sep 8 05:03:52 CEST 2009
M?ns Rullg?rd <mans at mansr.com> writes:
> Naotoshi Nojiri <naonoj at gmail.com> writes:
>> I tested the patch on Cortex-A8 @500MHz (BeagleBoard).
>> FFT (fft-test -s):
>> 440.8 -> 34.2 us/transform (12.9x speed up)
>> IMDCT (fft-test -i -m -s):
>> 142.4 -> 11.8 us/transform (12.1x speed up)
>> I had written NEON intrinsics code a bit, but this is my first
>> ARM/NEON code in assembly.
>> So, any comments and suggestions would be appreciated.
> Inline asm is unacceptable.
I have a faster, pure-asm version of the mdct stuff almost ready. No
need to resubmit.
mans at mansr.com
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