mirror of https://git.ffmpeg.org/ffmpeg.git
ce92ee4b4f
./ffmpeg -f lavfi -i yuvtestsrc=duration=1:size=1200x1440 -sws_flags fast_bilinear \
-s 1200x720 -f null -vframes 100 -pix_fmt $i -nostats \
-cpuflags 0 -v error -
32-bit mul, power8 only.
~2x speedup:
rgb24
24431 UNITS in yuv2packed2, 16384 runs, 0 skips
13783 UNITS in yuv2packed2, 16383 runs, 1 skips
bgr24
24396 UNITS in yuv2packed2, 16384 runs, 0 skips
14059 UNITS in yuv2packed2, 16384 runs, 0 skips
rgba
26815 UNITS in yuv2packed2, 16383 runs, 1 skips
12797 UNITS in yuv2packed2, 16383 runs, 1 skips
bgra
27060 UNITS in yuv2packed2, 16384 runs, 0 skips
13138 UNITS in yuv2packed2, 16384 runs, 0 skips
argb
26998 UNITS in yuv2packed2, 16384 runs, 0 skips
12728 UNITS in yuv2packed2, 16381 runs, 3 skips
bgra
26651 UNITS in yuv2packed2, 16384 runs, 0 skips
13124 UNITS in yuv2packed2, 16384 runs, 0 skips
This is a low speedup, but the x86 mmx version also gets only ~2x. The mmx version
is also heavily inaccurate, while the vsx version has high accuracy.
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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 | ||