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FFmpeg/libswscale

History

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
..
aarch64	swscale/aarch64: use multiply accumulate and increase vector factor to 4	5 years ago
arm	arm: swscale: Only compile the rgb2yuv asm if .dn aliases are supported	7 years ago
ppc	swscale: Fix AltiVec/VSX build with recent GCC	5 years ago
tests	swscale/tests/swscale: Lengthen pixfmt name buffer to 21 bytes	6 years ago
x86	swscale/x86/swscale: Fix undefined left shifts of negative numbers	5 years ago
Makefile	Merge commit '92db5083077a8b0f8e1050507671b456fd155125'	8 years ago
alphablend.c	…
bayer_template.c	…
gamma.c	…
hscale.c	…
hscale_fast_bilinear.c	…
input.c	swscale: Add support for NV24 and NV42	6 years ago
libswscale.v	…
log2_tab.c	…
options.c	swscale/options: Use AV_OPT_TYPE_PIXEL_FMT	8 years ago
output.c	swscale/output: Avoid 64bit in Alpha in yuv2ya16_X_c_template()	5 years ago
rgb2rgb.c	swscale/rgb : move shuffle func shuffle_bytes_1230, shuffle_bytes_3012, shuffle_bytes_3210 in order to add SIMD	7 years ago
rgb2rgb.h	swscale/rgb2rgb : cosmetic, move shuffle_bytes func declaration	7 years ago
rgb2rgb_template.c	lsws/rgb2rgb_template: Do not compile unneeded shuffle functions on big-endian.	7 years ago
slice.c	lsws/slice: Move a misplaced const.	8 years ago
swscale.c	swscale/swscale: cosmetics	5 years ago
swscale.h	…
swscale_internal.h	swscale/ppc: Move VSX-using code to its own file	6 years ago
swscale_unscaled.c	swscale/swscale_unscaled: add AV_PIX_FMT_GBRAP10 for LE and BE conversion wrapper	5 years ago
swscaleres.rc	…
utils.c	swscale/utils: Fix invalid left shifts of negative numbers	5 years ago
version.h	Bump minor versions again on master to keep 4.2 versions separate from master	5 years ago
vscale.c	…
yuv2rgb.c	swscale/yuv2rgb: Return a more specific error code from ff_yuv2rgb_c_init_tables()	6 years ago