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FFmpeg/libswscale

History

Niklas Haas 095f8038fa swscale/output: fix bilinear yuv2rgb chroma interpolation ... These functions were divided into two special cases; one assuming that uvalpha == 0, and the other assuming that uvalpha == 2048. This worked fine for simple 2x chroma upscaling but broke for e.g. yuv410p, non-centered chroma, or other special cases that involved non-aligned chroma filters. Fix it by instead dividing this check into two cases, a uvalpha==0 fast path and a uvalpha>0 general path. Instead of (A+B)/2 the general path now multiplies in the true uvalpha weight. I tried preserving the old fast path for the case of uvalpha == 2048, but this was significantly slower in practise versus having just one general path. However, we still need a uvalpha == 0 path for the unscaled case. Fixes: ticket #5083 Signed-off-by: Niklas Haas <git@haasn.dev> Sponsored-by: Sovereign Tech Fund		2 months ago
..
aarch64	swscale/aarch64: add neon {lum,chr}ConvertRange16	2 months ago
arm	…
loongarch	…
ppc	…
riscv	…
tests	tests/swscale: allow nonzero positive return codes from sws_scale_frame()	2 months ago
x86	swscale/x86: add sse4 and avx2 {lum,chr}ConvertRange16	2 months ago
Makefile	…
alphablend.c	…
bayer_template.c	…
gamma.c	…
graph.c	…
graph.h	…
half2float.c	…
hscale.c	swscale/range_convert: fix mpeg ranges in yuv range conversion for non-8-bit pixel formats	2 months ago
hscale_fast_bilinear.c	…
input.c	…
libswscale.v	…
log2_tab.c	…
options.c	…
output.c	swscale/output: fix bilinear yuv2rgb chroma interpolation	2 months ago
rgb2rgb.c	…
rgb2rgb.h	…
rgb2rgb_template.c	…
slice.c	swscale/slice: fix init of 32 bpc planes	2 months ago
swscale.c	swscale/range_convert: fix mpeg ranges in yuv range conversion for non-8-bit pixel formats	2 months ago
swscale.h	swscale: fix documentation of sws_scale_frame()	2 months ago
swscale_internal.h	swscale/range_convert: fix mpeg ranges in yuv range conversion for non-8-bit pixel formats	2 months ago
swscale_unscaled.c	…
swscaleres.rc	…
utils.c	swscale/utils: fix sws_getCachedContext check	2 months ago
utils.h	…
version.c	…
version.h	…
version_major.h	…
vscale.c	…
yuv2rgb.c	…