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${ noResults }
5 Commits (f93bd302821e08df5ee037e67c4b85bec5d4d475)
Author | SHA1 | Message | Date |
---|---|---|---|
Martin Storsjö | 9025d5c5ce |
swscale: aarch64: Don't clobber callee-saved registers v8-v15
Signed-off-by: Martin Storsjö <martin@martin.st> |
5 years ago |
Martin Storsjö | 872790b1f9 |
swscale: aarch64: Avoid using the x18 register
The x18 is a reserved platform register on Darwin and Windows. x8/w8 seems to be unused in this function though (and same about x10 and x14), so there's really no reason to use x18 here - just change the uses of x18/w18 into x8/w8 instead without any further rewrites. Signed-off-by: Martin Storsjö <martin@martin.st> |
5 years ago |
Sebastian Pop | bd83191271 |
swscale/aarch64: use multiply accumulate and increase vector factor to 4
This patch implements ff_hscale_8_to_15_neon with NEON fused multiply accumulate and bumps the vectorization factor from 2 to 4. The speedup is of 25% on Graviton1 A1 instances based on A-72 cpus: $ ffmpeg -nostats -f lavfi -i testsrc2=4k:d=2 -vf bench=start,scale=1024x1024,bench=stop -f null - before: t:0.040303 avg:0.040287 max:0.040371 min:0.039214 after: t:0.032168 avg:0.032215 max:0.033081 min:0.032146 The speedup is of 39% on Graviton2 m6g instances based on Neoverse-N1 cpus: $ ffmpeg -nostats -f lavfi -i testsrc2=4k:d=2 -vf bench=start,scale=1024x1024,bench=stop -f null - before: t:0.019446 avg:0.019423 max:0.019493 min:0.019181 after: t:0.014015 avg:0.014096 max:0.015018 min:0.013971 Tested with `make check` on aarch64-linux. Signed-off-by: Sebastian Pop <spop@amazon.com> Reviewed-by: Jean-Baptiste Kempf <jb@videolan.org> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc> |
5 years ago |
Clément Bœsch | 040598218f |
sws/aarch64: restore ff_hscale_8_to_15_neon()
Fix final scaling and required filter alignment. Pass FATE. |
9 years ago |
Clément Bœsch | 263eb76bdf |
sws/aarch64: add ff_hscale_8_to_15_neon
./ffmpeg -nostats -f lavfi -i testsrc2=4k:d=2 -vf bench=start,scale=1024x1024,bench=stop -f null - before: t:0.489726 avg:0.489883 max:0.491852 min:0.489482 after: t:0.256515 avg:0.256458 max:0.256999 min:0.253755 |
9 years ago |