[FFmpeg-devel] [PATCH 2/7] get_bits: support 32bits cache

Christophe Gisquet christophe.gisquet at gmail.com
Wed Apr 15 11:25:38 EEST 2020


Hi,

Le mer. 15 avr. 2020 à 00:41, Carl Eugen Hoyos <ceffmpeg at gmail.com> a écrit :
> Will test on ppc32 over the weekend.

Please do. Testing on different endianness and different arch is
probably what this patchset lacks the most.

If you can, on this arch, please test just before and just after
"0006-get_bits-change-refill-to-RAD-pattern.patch"
The impact on x86 was non-trivial, but it may behave quite differently
(better?) on PPC.

Also, regarding the benchmarking, provided there is an encoder (either
in ffmpeg or VfW), I use a soft video, and another which is the soft
video with added grain/noise (see eg ffmpeg filter) added on top of
it.
As the bitstream reader gets faster, the difference in decoding speed
over the 2 may increase.

Thanks,
-- 
Christophe


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