[FFmpeg-devel] [PATCH] x86/hevc_res_add: refactor ff_hevc_transform_add{16, 32}_8

[Reimar Döffinger]

On 21.08.2014, at 22:40, Kieran Kunhya <kierank at obe.tv> wrote:
>> It does that, but on older SSE2 cpus with not-so-good OOO execution grouping
>> instructions like this might help reduce dependencies a bit.
> 
> Are any older SSE2 CPUs actually capable of decoding reasonable HEVC?

Of course they are. Not in real time, but people would use the same method that was used for H.264 back in the day: re-encode to a simpler format (and/or skip processing steps).
So any speedup will still be welcome on these even if less critical.