[FFmpeg-devel] [PATCH v2] aarch64/opusdsp: implement NEON accelerated postfilter and deemphasis
Carl Eugen Hoyos
ceffmpeg at gmail.com
Sat Apr 6 17:41:00 EEST 2019
2019-04-06 16:08 GMT+02:00, Lynne <dev at lynne.ee>:
> Apr 6, 2019, 2:42 PM by ceffmpeg at gmail.com:
>> 2019-04-02 13:47 GMT+02:00, Lynne <> dev at lynne.ee <mailto:dev at lynne.ee>>
>>> 153372 UNITS in postfilter_c, 65536 runs, 0 skips
>>> 73164 UNITS in postfilter_neon, 65536 runs, 0 skips -> 2.1x
>>> 80591 UNITS in deemphasis_c, 131072 runs, 0 skips
>>> 43969 UNITS in deemphasis_neon, 131072 runs, 0 skips -> 1.83x
>>> Total decoder speedup: ~15% on a Raspberry Pi 3 (from
>>> 28.1x to 33.5x realtime)
>> How can I reproduce this?
Where can I find the file you used?
>> On something called "X-Gene" Linux, I see a 2,5% overall
>> speedup (126x to 129x)
>> The issue is that there is some probability that your patch will
>> break mac and Windows compilation, so I would at least
>> like to understand why I can not reproduce your speedup.
> I tested this on real hardware.
Is X-Gene not real hardware?
> How can this break mac support at all when it doesn't
> support aarch64?
Have you heard of iPhones?
> And I can't find a windows aarch64 compiler either.
There is one (I don't know more).
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