mirror of https://git.ffmpeg.org/ffmpeg.git
bd83191271
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> |
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| .. | ||
| aarch64 | ||
| arm | ||
| ppc | ||
| tests | ||
| x86 | ||
| Makefile | ||
| alphablend.c | ||
| bayer_template.c | ||
| gamma.c | ||
| hscale.c | ||
| hscale_fast_bilinear.c | ||
| input.c | ||
| libswscale.v | ||
| log2_tab.c | ||
| options.c | ||
| output.c | ||
| rgb2rgb.c | ||
| rgb2rgb.h | ||
| rgb2rgb_template.c | ||
| slice.c | ||
| swscale.c | ||
| swscale.h | ||
| swscale_internal.h | ||
| swscale_unscaled.c | ||
| swscaleres.rc | ||
| utils.c | ||
| version.h | ||
| vscale.c | ||
| yuv2rgb.c | ||